WO2020071228A1 - スキンケア製品用不織布、フェイスマスクおよびクレンジングシート - Google Patents
スキンケア製品用不織布、フェイスマスクおよびクレンジングシートInfo
- Publication number
- WO2020071228A1 WO2020071228A1 PCT/JP2019/037824 JP2019037824W WO2020071228A1 WO 2020071228 A1 WO2020071228 A1 WO 2020071228A1 JP 2019037824 W JP2019037824 W JP 2019037824W WO 2020071228 A1 WO2020071228 A1 WO 2020071228A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- skin care
- nonwoven fabric
- fiber
- care products
- thermoplastic resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0212—Face masks
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D44/00—Other cosmetic or toiletry articles, e.g. for hairdressers' rooms
- A45D44/002—Masks for cosmetic treatment of the face
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/73—Polysaccharides
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/73—Polysaccharides
- A61K8/731—Cellulose; Quaternized cellulose derivatives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
- A61K8/88—Polyamides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
- A61Q19/10—Washing or bathing preparations
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/425—Cellulose series
- D04H1/4258—Regenerated cellulose series
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/4334—Polyamides
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43825—Composite fibres
- D04H1/4383—Composite fibres sea-island
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43835—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43838—Ultrafine fibres, e.g. microfibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/549—Polyamides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/20—Cellulose-derived artificial fibres
- D10B2201/22—Cellulose-derived artificial fibres made from cellulose solutions
- D10B2201/24—Viscose
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
Definitions
- the present invention relates to a nonwoven fabric, a face mask and a cleansing sheet for skin care products.
- Sheet-shaped skin care cosmetics typified by face masks and cleansing sheets are used for various purposes such as penetration of chemicals into the skin and removal of cosmetics. Since the face mask can hold the drug solution on the surface of the skin for a certain period of time, the drug solution can sufficiently penetrate the skin as compared with conventional skin care applied directly to the skin.
- the cleansing sheet provides a high cleansing effect from both the removal of the cosmetic by the cleansing agent and the removal effect by contact of the sheet with the skin.
- Various products have been proposed as sheet-like skin care products due to the excellent performance as described above.
- a non-woven fabric comprising a thermoplastic resin fiber having a single fiber diameter of 1 to 500 nm and a fiber having a wet tensile strength of 2.0 cN / dtex or more has been used as a cleansing agent or the like. It is known that the product obtained by immersion is excellent in wet strength, and furthermore has improved adhesion to the skin and wiping properties of the cosmetics adhered to the skin (Patent Document 1).
- the nonwoven fabric disclosed in Patent Document 1 (hereinafter sometimes referred to as known nonwoven fabric 1) has a tensile strength when wet of 2.0 cN / dtex or more and contains 30 to 70% by mass of a fiber having a high tensile strength.
- a skin care product obtained by impregnating the known nonwoven fabric 1 with a cleansing agent or a cosmetic has excellent strength when wet, but has good adhesion to the skin (particularly when a certain time has passed after use of the skin care product). And the wiping properties of cosmetics adhering to the skin are insufficient.
- the present invention provides a skin care product having excellent handleability when used as a skin care product, and further having excellent adhesion to the skin when used as a skin care product and excellent wiping properties of cosmetics attached to the skin. It is an object to provide a nonwoven fabric for products.
- a nonwoven fabric for skin care products comprising a thermoplastic resin fiber having a single fiber diameter of 50 nm or more and 800 nm or less, and a cellulose fiber, wherein the cellulose fiber is in accordance with JIS L 1015: 2010 8.7.2.
- the measured tensile strength is 1.9 cN / dtex or less
- the total content of the thermoplastic resin fiber and the cellulose fiber is 85% by mass or more based on the total mass of the nonwoven fabric for skin care products
- the content ratio by mass of the thermoplastic resin fiber and the cellulose fiber is 0.23 to 1.50
- the density of the nonwoven fabric for skin care products is 0.08 to 0.16 g / cm.
- non-woven fabric for skin care products (2) The nonwoven fabric for skin care products according to (1), wherein the thermoplastic resin fiber is a polyamide fiber; (3) The nonwoven fabric for skin care products according to (1) or (2), wherein the cellulose fiber is rayon; (4) The nonwoven fabric for skin care products according to (1) to (3), wherein the cellulose fiber has a fiber length of 35 mm or more; (5) The nonwoven fabric for a skin care product according to any one of (1) to (4), wherein the nonwoven fabric has a density of 0.08 to 0.14 g / cm 3 . (6) A face mask having the nonwoven fabric for skin care products according to any one of (1) to (5), (7) A cleansing sheet comprising the nonwoven fabric for skin care products according to any one of (1) to (5).
- the present invention contains a specific thermoplastic resin fiber and a specific cellulose fiber, and further contains the total content of the thermoplastic resin fiber and the cellulose fiber and the content of the thermoplastic resin fiber and the cellulose fiber
- a non-woven fabric for skin care products whose mass ratio (thermoplastic resin fiber / cellulose fiber) is in a specific range, it has excellent handleability as a skin care product, and furthermore has good adhesion to the skin when made into a skin care product
- the nonwoven fabric for a skin care product of the present invention has a thermoplastic resin fiber having a single fiber diameter of 50 nm or more and 800 nm or less and a tensile strength of 1.9 cN / dtex or less measured according to JIS L 1015: 2010 8.7.2. And cellulose fibers.
- the total content of the thermoplastic resin fiber and the cellulose fiber is 85% by mass or more, and the content ratio of the thermoplastic resin fiber and the cellulose fiber (the thermoplastic resin Fiber / cellulose fiber) is 0.23 to 1.50 and the density is 0.08 to 0.16 g / cm 3 .
- a tensile strength measured according to JIS L 1015: 2010 8.7.2 may be simply referred to as a tensile strength.
- the total content of the thermoplastic resin fiber and the cellulose fiber may be simply referred to as the total content.
- the content mass ratio of the thermoplastic resin fiber to the cellulose fiber may be simply referred to as the content mass ratio.
- the nonwoven fabric for a skin care product of the present invention has an effect of being excellent in static friction coefficient, followability, liquid retention, and softness during compression by adopting the above configuration.
- the details of the mechanism by which the nonwoven fabric for skin care products of the present invention exerts the above effects are presumed as follows. That is, the nonwoven fabric for a skin care product of the present invention is a thermoplastic resin fiber having a single fiber diameter of 50 nm or more and 800 nm or less, which is extremely fine and excellent in flexibility, and a cellulose fiber excellent in water absorption and having a high tensile strength.
- the nonwoven fabric for a skin care product of the present invention can improve the handleability of a skin care product using the same, but also has excellent wet flexibility (that is, softness when compressed), conformability and retention. It also has liquid properties.
- a skin care product using the nonwoven fabric for a skin care product of the present invention may be used by a user's skin (hereinafter simply referred to as skin) at the time of use. It exhibits excellent followability to the unevenness existing on the surface of (1), and can suppress generation of a large gap between the skin care product and the skin. Furthermore, since the nonwoven fabric for skin care products of the present invention contains a specific amount of the thermoplastic resin fiber which is an ultrafine fiber, the thermoplastic resin present on the surface of the nonwoven fabric for skin care products when the skin care product is used.
- the fibers penetrate into fine wrinkles existing on the skin, the contact area between the nonwoven fabric for skin care products and the skin increases, and the coefficient of static friction becomes excellent. Therefore, the present skin care product is less likely to slip with the skin. Therefore, it is presumed that the excellent adherence and excellent wiping properties of the present skin care product are exhibited by the excellent followability of the present skin care product to the skin and the suppression of slippage between the skin.
- the density of the nonwoven fabric for skin care products of the present invention is in the range of 0.08 to 0.16 g / cm 3 .
- the total content of the thermoplastic resin fiber and the cellulose fiber is 85% by mass or more based on the total mass of the nonwoven fabric for skin care products, and further, the content ratio of the thermoplastic resin fiber and the cellulose fiber (the thermoplastic resin Fiber / cellulose fiber) of 0.23 to 1.50 for the skin care product of the present invention (that is, the nonwoven fabric for the skin care product of the present invention containing a relatively high content of an ultrafine and highly flexible thermoplastic resin fiber. (Nonwoven fabric), the handleability is also excellent. Therefore, a skin care product using the non-woven fabric for skin care product of the present invention has a high level of handleability, adhesion, and wiping properties, and also has excellent wettability and flexibility. Become.
- the skin care product using the non-woven fabric for skin care product of the present invention not only has excellent adhesion to the skin immediately after use of the skin care product, but also has excellent adhesion to the skin after a certain period of time from the start of use of the skin care product. Is also excellent. It is determined whether or not the adhesiveness to the skin at a certain time after the start of the use of the skin care product is excellent, by the adhesiveness to the skin at the lapse of 20 minutes after the use of the skin care product (hereinafter simply referred to as “ (May be referred to as adhesion).
- the nonwoven fabric for skin care products of the present invention contains a thermoplastic resin fiber having a single fiber diameter of 50 nm or more and 800 nm or less.
- the thermoplastic resin fiber used for the nonwoven fabric for skin care products of the present invention is a fiber having a single fiber diameter of 50 nm or more and 800 nm or less.
- the upper limit of the single fiber diameter of the thermoplastic resin fiber is more preferably 600 nm or less, and further preferably 300 nm or less.
- thermoplastic resin contained in the thermoplastic resin fiber used in the present invention polyester, polyamide, polyolefin and the like can be used.
- the thermoplastic resin fiber is preferably a polyamide fiber from the viewpoint of enhancing the adhesion and wiping properties when wet.
- a thermoplastic resin fiber having a single fiber diameter of 50 nm or more and 800 nm or less as a polyamide fiber having water absorbency, the capillary effect of absorbing a chemical solution existing between the nonwoven fabric for skin care products and the skin is enhanced, and the skin care product is used.
- the nonwoven fabric absorbs the excess chemical solution between the skin and the skin, the contact area between the nonwoven fabric for skin care products and the skin increases, and as a result, the adhesion and the wiping properties when wet can be further improved.
- other components may be polymerized in these thermoplastic resins, and additives such as stabilizers may be contained.
- the polyamide for example, nylon 6, nylon 11, nylon 12, nylon 66, and various aramid resins can be used. Among these, nylon 6 having good water absorption is preferably used.
- each thermoplastic resin fiber may be present individually dispersed, or at least a part of the thermoplastic resin fibers may be partially bonded to each other. Or at least a portion of the thermoplastic resin fibers may be agglomerated to form a bundle.
- the thermoplastic resin fiber is not particularly limited in terms of length, cross section, cross-sectional shape, etc., and may have a so-called fibrous form.
- the nonwoven fabric for skin care products of the present invention contains cellulose fibers having a tensile strength of 1.9 cN / dtex or less and an appropriate flexibility.
- this cellulose fiber will be described.
- the tensile strength of the cellulose fiber is preferably 1.7 cN / dtex or less, more preferably 1.5 cN / dtex or less.
- the lower limit of the tensile strength of the cellulose fiber is not particularly limited, but is preferably 0.9 cN / dtex or more because the handleability of the skin care product can be further improved.
- the fiber length of the cellulose fiber is preferably 35 mm or more.
- the upper limit of the fiber length of the cellulose fiber is not particularly limited, but is preferably 80 mm or less in order to further improve the processability of the fiber in the production process described below.
- cellulose fibers used in the present invention plant-based natural fibers such as pulp and cotton, regenerated fibers such as rayon and cupra, and semi-synthetic fibers such as acetate and triacetate can be used.
- rayon is preferred because it can improve the adhesion and wiping properties of the skin care product.
- the nonwoven fabric for skin care products of the present invention has a total content of thermoplastic resin fibers and cellulose fibers of 85% by mass or more based on the total mass.
- the thermoplastic resin fiber having excellent flexibility and the cellulose fiber having excellent flexibility are effective, and the flexibility of the nonwoven fabric for skin care products is improved. It is speculated that the skin care product will have excellent adhesion and wiping properties.
- the total content is preferably 95% by mass or more, and more preferably 100% by mass.
- the content ratio of thermoplastic resin fiber to cellulose fiber is 0.23 to 1.50.
- the content ratio is within the above range, the adhesion and wiping properties of the skin care product are improved.
- the flexibility in the present invention refers to the softness when the nonwoven fabric for a skin care product of the present invention is compressed in the thickness direction of the nonwoven fabric for a skin care product (that is, the softness when compressed).
- a WC value measured by a KES compression tester As a technique for evaluating flexibility, there is a WC value measured by a KES compression tester.
- the WC value is a work amount (gf ⁇ cm / cm 2 ) up to the maximum pressure when the fabric is compressed, and the higher the value, the better the softness during compression.
- the WC value of the present invention by the KES compression test is a WC value measured when wet, and the WC value of the nonwoven fabric for skin care products of the present invention is preferably 0.40 gf ⁇ cm / cm 2 or more. It is more preferably at least 0.50 gf ⁇ cm / cm 2 , even more preferably at least 0.60 gf ⁇ cm / cm 2 .
- the nonwoven fabric for skin care products of the present invention may be a thermoplastic resin fiber having a single fiber diameter of more than 800 nm, a cellulose fiber having a tensile strength when wet of more than 1.9 cN / dtex, or a thermoplastic fiber, as long as the effect is not impaired.
- Fibers other than resin fibers and cellulose fibers may be included. Examples of fibers other than thermoplastic resin fibers and cellulose fibers include natural animal fibers such as silk and wool.
- a thermoplastic resin fiber exceeding 800 nm includes a polyethylene terephthalate fiber having a single fiber fineness of 1.6 dtex or more (single fiber diameter of 12.3 ⁇ m), the cross-sectional shape of the fiber is irregular.
- the cross-sectional shape of the fiber is an irregular cross-section or a flat cross-section, the second moment of the fiber is smaller than that of a fiber having a circular cross-section, and as a result, the softness of the nonwoven fabric for skin care products when wet (ie, It is presumed that softness during compression) and followability are improved.
- the basis weight of the nonwoven fabric for skin care products of the present invention is preferably 25 to 150 g / m 2 , and the lower limit is more preferably 30 g / m 2 or more, and further preferably 40 g / m 2 or more. .
- the upper limit is more preferably 100 g / m 2 or less, and even more preferably 70 g / m 2 or less.
- the density of the nonwoven fabric for skin care products of the present invention is 0.08 to 0.16 g / cm 3 .
- the lower limit is preferably at least 0.09 g / cm 3, more preferably at least 0.10 g / cm 3 .
- the upper limit is preferably 0.15 g / cm 3 or less, and more preferably 0.14 g / cm 3 or less.
- the nonwoven fabric for skin care products of the present invention contains a thermoplastic resin fiber having a single fiber diameter of 50 nm or more and 800 nm or less.
- the thermoplastic resin fiber penetrates into the fine irregularities on the skin surface, increasing the contact area between the skin and the non-woven fabric for skin care products, increasing the coefficient of friction between the non-woven fabric for skin care products and the skin, It is assumed that the nonwoven fabric suppresses slipping on the surface of the skin, and consequently contributes to the improvement of the adhesion and wiping properties of the skin care product.
- the nonwoven fabric for skin care products of the present invention preferably contains the thermoplastic resin fiber in an amount of 20% by mass or more, more preferably 30% by mass or more based on the total mass of the nonwoven fabric for skin care products.
- the coefficient of friction between the non-woven fabric for skin care products and the skin can be evaluated by the static friction coefficient when the non-woven fabric for skin care products is impregnated with a lotion according to the JIS P8147: 1994 3.2 gradient method. it can.
- the coefficient of static friction between the skin care product nonwoven fabric and the skin is preferably 0.50 or more, and more preferably 0.60 or more, because the adhesion and the wiping property of the skin care product are more excellent. More preferably, it is more preferably 0.70 or more.
- the nonwoven fabric for a skin care product according to the present invention contains cellulose fibers having a tensile strength of 1.9 cN / dtex or less, so that the nonwoven fabric for a skin care product follows fine irregularities of the skin when wet, so that the nonwoven fabric for a skin care product can follow the nonwoven fabric.
- this contributes to improvement in the adhesion and wiping properties of the skin care product. That is, when the 20% elongation stress of the nonwoven fabric for a skin care product when wet is 5.0 N / 25 mm or less, the following ability is sufficient to improve the adhesion and the like of the skin care product. preferable.
- the elongation stress of the nonwoven fabric for skin care products according to the present invention when wet was determined based on JIS L 1913: 1998 6.3.2 by using a constant-speed elongation type tensile tester. % Can be measured by reading the stress at the time of elongation. Also, for example, by appropriately adjusting the content of the cellulose fiber contained in the nonwoven fabric for a skin care product of the present invention and the fineness of the single fiber of the cellulose fiber, the 20% elongation stress of the nonwoven fabric for a skin care product in a wet state is desired. It can be.
- the nonwoven fabric for a skin care product of the present invention preferably contains cellulose fibers having excellent liquid retention properties in an amount of 35% by mass or more based on the total mass of the nonwoven fabric for a skin care product.
- a non-woven fabric for a skin care product impregnated with a lotion is placed on the simulated skin, and the initial value of the lotion retained by the non-woven fabric for the skin care product and the skin care product after 20 minutes are measured. It can be evaluated by the chemical solution holding ratio using the value of the mass of lotion held by the nonwoven fabric. From the reason that the adhesion and wiping properties when wet are maintained for a long time, the chemical solution retention rate of the nonwoven fabric for skin care products after 20 minutes is preferably 75% or more, more preferably 80% or more, and further more preferably. 85% or more.
- the nonwoven fabric for skin care products of the present invention is preferably a dry nonwoven fabric.
- the thickness of the nonwoven fabric can be increased as compared with a wet nonwoven fabric, and as a result, the softness of the nonwoven fabric during compression can be improved.
- the nonwoven fabric for skin care products of the present invention is preferably a spunlace nonwoven fabric among dry nonwoven fabrics. Spunlaced nonwoven fabric is obtained by a method of entanglement of constituent fibers by a high-pressure water flow, but this method has less breakage of constituent fibers at the time of entanglement and is supple compared to a method of entanglement of constituent fibers by needle punch. A non-woven fabric for skin care products having a good texture can be obtained.
- thermoplastic resin fiber of the present invention for example, a method disclosed in International Publication WO2012 / 173116 and the like can be adopted.
- the nonwoven fabric for a skin care product of the present invention can be used, for example, by immersing it in a lotion, a serum, or a chemical such as a cleansing agent, for example, a face mask, a skin care sheet, a mask for the eyes, a cleansing sheet, a cleansing sheet for point makeup, etc. Products.
- a cleansing agent for example, a face mask, a skin care sheet, a mask for the eyes, a cleansing sheet, a cleansing sheet for point makeup, etc. Products.
- Tensile strength of cellulose fiber The tensile strength of the cellulose fiber was measured based on JIS L 1015: 2010 8.7.2. Specifically, 50 cellulose fibers were collected from the nonwoven fabric for skin care products. Next, after each fiber was immersed in water for 2 minutes, one of 50 cellulose fibers was attached to a constant-speed elongation type tensile tester, and the tensile strength was measured in water. This measurement was performed for 50 cellulose fibers.
- the grip distance was set to 20 mm, a load was applied at a tensile speed of 20 mm / min until the sample was cut, the strength at that time was measured, the average value of the measurement results of 50 times of tensile strength measurement was calculated, and the average value of the cellulose fibers was measured.
- the tensile strength was used.
- the gripping interval was set to 10 mm, a load was applied at a tensile speed of 10 mm / min until the sample was cut, and the strength at that time was measured.
- Fiber length of cellulose fiber was measured based on JIS L 1015: 2010 8.4.1 direct method (method C). Specifically, a nonwoven fabric for skin care products having a size of 80 mm x 80 mm was prepared as a sample. On one side of the sample, a circle having a diameter of 6 cm was drawn which shared the center point of the sample. Next, cellulose fibers were randomly taken out from the inside of this circle one by one to collect a total of 25 cellulose fibers. An operation similar to this operation was performed on the other surface of the sample. Then, the fiber length of a total of 50 cellulose fibers obtained from this sample was measured as follows. One randomly extracted cellulose fiber was straightened without stretching. Next, the fiber length of the cellulose fiber in a straightened state was measured to the mm unit on a measuring instrument. This measurement was performed for 50 cellulose fibers, and the average value of the 50 fibers was calculated. Length.
- Thickness The thickness was measured based on JIS L1913: 1998 6.1.2 A method. Five test pieces of 50 mm ⁇ 50 mm were collected from a sample of the nonwoven fabric for skin care products using a steel ruler and a razor blade. The thickness of the test piece was measured by applying a pressure of 0.36 kPa for 10 seconds under a standard condition using a thickness measuring device (constant pressure thickness measuring device manufactured by TECLOCK, model PG11J). The measurement was performed for each test piece (5 pieces), and the average value was calculated.
- test piece nonwoven fabric for skin care products having a width of 30 mm and a length of 130 mm was prepared. Five test pieces whose vertical direction is the length direction, a total of ten test pieces, were prepared. Regarding the evaluation of the traveling direction, the test piece was immersed in a lotion (MUJI “moisturizer / moisturizing type for sensitive skin”) for 10 minutes, taken out, and immediately attached to a weight of a sliding inclination measuring device.
- lotion MUJI “moisturizer / moisturizing type for sensitive skin”
- a silicon simulated skin manufactured by Beulux was attached to the slip inclination measuring device, and the weight on which the test piece was attached was brought into contact with the measurement surface of the test piece and the traveling direction (length direction) of the test piece.
- the tilt angle when the weight falls is read under a tilt angle of less than 3 ° / sec, and the tangent of the tilt angle is read.
- Tan ⁇ was defined as a coefficient of static friction.
- the specimen was placed on the simulated skin such that the direction (length direction) perpendicular to the traveling direction of the test piece and the sliding direction of the sliding inclination angle measuring device matched, It was evaluated similarly.
- the average of the static friction coefficients of the obtained ten test pieces was defined as the static friction coefficient of the nonwoven fabric for skin care products of the present invention.
- the lotion used for the above measurement should be used within one month after opening, and the simulated skin used for the above measurement should be used 5 times or more and 50 times or less. I decided to.
- a load was applied under the conditions of a grip interval: 100 mm and a pulling speed: 200 mm / min until the test piece was cut, and the stress (N / 25 mm) when the test piece was elongated by 20 mm was read from the stress-strain curve.
- the elongation stress was 20%.
- the evaluation in the direction perpendicular to the traveling direction was carried out by attaching to a constant-speed elongation type tensile tester so that the tensile direction was perpendicular to the traveling direction of the test piece (length direction).
- the lower value of the obtained average values of the 20% elongation stress in each direction was defined as the 20% elongation stress of the nonwoven fabric for skin care products.
- the initial total mass (g) of the test piece, the silicon simulated skin, and the lotion was measured, and then the test piece was put into a thermo-hygrostat at a temperature of 20 ° C. and a humidity of 60% RH. Twenty minutes later, the above sample was taken out, the total mass (g) of the test piece, the silicone simulated skin and the lotion after 20 minutes was measured, and the mass retention (%) of the lotion was calculated by the following formula. The measurement was performed five times, and the average value was calculated.
- Example 1 [Thermoplastic fiber] (Sea-island composite fiber) Polyethylene terephthalate (PET melt viscosity: 160 Pa ⁇ s) as an island component and PET (copolymerized PET melt viscosity: 95 Pa ⁇ s) copolymerized with 8.0 mol% of 5-sodium sulfoisophthalic acid as a sea component at 290 ° C. After being melted separately, weighed, a known complex base (composite base having the arrangement disclosed in FIG. 6 (b) of WO2012 / 173116) was incorporated, and 1000 per island for the island component per discharge hole.
- PET melt viscosity: 160 Pa ⁇ s Polyethylene terephthalate
- PET copolymerized PET melt viscosity: 95 Pa ⁇ s
- a known complex base composite base having the arrangement disclosed in FIG. 6 (b) of WO2012 / 173116
- Nonwoven fabric for skin care products 52% by mass of the above-mentioned thermoplastic resin fiber (island component diameter: 230 nm) and 48% by mass of rayon fiber (single fiber fineness: 1.4 dtex, wet strength: 1.1 cN / dtex, fiber length: 38 mm) are carded.
- the web was made with a cross wrap weber. The web was entangled with a high-pressure water stream at a pressure of 10 MPa and a speed of 1.0 m / min, and dried at a drying temperature of 100 ° C. using a pin tenter to obtain a nonwoven fabric.
- the non-woven fabric is treated with a 1% aqueous sodium hydroxide solution at a temperature of 95 ° C., a bath ratio of 1:40, and a treatment time of 30 minutes to remove sea components, thereby obtaining a thermoplastic resin fiber (single fiber diameter: Nonwoven fabric 1 for skin care products of 65 g / m 2 containing 30 mass% of 230 nm) and 70 mass% of rayon fiber (single fiber fineness: 1.4 dtex, wet strength: 1.1 cN / dtex, fiber length: 38 mm) Obtained.
- the content of the thermoplastic resin fiber and the content of the rayon fiber contained in the nonwoven fabric 1 for a skin care product are based on the total mass of the nonwoven fabric for a skin care product after the sea removal. Further, the nonwoven fabric 1 for skin care products was punched into a mask to obtain a face mask. Separately from the face mask, the nonwoven fabric 1 for skin care products was cut into a width of 70 mm and a length of 55 mm to obtain a cleansing sheet. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet. Tables 1 and 2 summarize the structure and evaluation results of the nonwoven fabric 1 for skin care products.
- Example 2 [Thermoplastic fiber] (Polymer alloy fiber) Nylon 6 (N6) (40% by mass) having a melt viscosity of 212 Pa ⁇ s (262 ° C., shear rate of 121.6 sec ⁇ 1 ) and a melting point of 220 ° C., a weight average molecular weight of 120,000, and a melt viscosity of 30 Pa ⁇ s (240 ° C., shear)
- the poly-L-lactic acid (60% by mass) having an optical purity of 99.5% or more at a melting point of 170 ° C. and a melting point of 170 ° C. was separately measured and separately supplied to a twin-screw extruder and kneader described in detail below.
- the mixture was kneaded to obtain a polymer alloy chip.
- the kneading part is located on the discharge side from 1/3 of the effective screw length.
- the obtained polymer alloy chip is supplied to a uniaxial extrusion type melting apparatus for a staple spinning machine, and melt spinning is performed at a melting temperature of 235 ° C., a spinning temperature of 235 ° C. (a die surface temperature of 220 ° C.), and a spinning speed of 1200 m / min.
- a polymer alloy fiber was obtained.
- Nonwoven fabric for skin care products 52% by mass of the above thermoplastic resin fiber (island component diameter: 230 nm), 38% by mass of rayon fiber (single fiber fineness: 1.4 dtex, wet strength: 1.1 cN / dtex, fiber length: 38 mm), polyethylene terephthalate (PET) 10% by mass of fiber (single fiber fineness: 1.6 dtex) was mixed with a card and opened, and then made into a web with a cross wrap weber. The web was entangled with a high-pressure water stream at a pressure of 10 MPa and a speed of 1.0 m / min, and dried at a drying temperature of 100 ° C.
- PET polyethylene terephthalate
- the content of the thermoplastic resin fiber and the content of the rayon fiber and the PET fiber contained in the above-mentioned nonwoven fabric for skin care products are based on the total mass of the above-mentioned nonwoven fabric for skin care products after sea removal. Furthermore, a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using this nonwoven fabric 2 for skin care products. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet. Tables 1 and 2 summarize the structure and evaluation results of the nonwoven fabric 2 for skin care products.
- Example 3 A nonwoven fabric for a skin care product having a basis weight of 65 g / m 2 in the same manner as in Example 2 except that the PET fiber of Example 2 was changed to a flat multi-lobed polyester fiber (single fiber fineness: 1.7 dtex) made of PET. 3 was obtained. Next, a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using the nonwoven fabric 3 for skin care products. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet. Tables 1 and 2 summarize the structure and evaluation results of the nonwoven fabric 3 for skin care products.
- Example 4 The island component of the sea-island composite fiber of Example 1 was changed to nylon 6 (N6 melt viscosity: 190 Pa ⁇ s), the spinning temperature was changed to 270 ° C., and the island component diameter of the sea-island composite fiber was changed to 700 nm.
- a nonwoven fabric 4 for skin care products having a basis weight of 65 g / m 2 was obtained.
- a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using the nonwoven fabric 4 for skin care products. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet. Tables 1 and 2 summarize the structure and evaluation results of the nonwoven fabric 4 for skin care products.
- Example 5 A nonwoven fabric 5 for a skin care product having a basis weight of 65 g / m 2 was obtained in the same manner as in Example 4, except that the diameter of the island component of the sea-island composite fiber of Example 4 was changed to 300 nm. Next, a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using this nonwoven fabric 5 for skin care products. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet. Tables 1 and 2 summarize the structure and evaluation results of the nonwoven fabric 5 for skin care products.
- Example 6 52% by mass of the thermoplastic resin fiber of Example 2 (island component diameter: 230 nm) and 48% by mass of rayon fiber (single fiber fineness: 1.8 dtex, wet strength: 1.9 cN / dtex, fiber length: 38 mm) After blending and opening with a card, the web was formed with a cross wrap weber. The web was entangled with a high-pressure water stream at a pressure of 10 MPa and a speed of 1.0 m / min, and dried at a drying temperature of 100 ° C. using a pin tenter to obtain a nonwoven fabric.
- thermoplastic resin fiber single fiber diameter: Nonwoven fabric 6 for skin care products with a basis weight of 65 g / m 2 containing 30% by mass of 230 nm
- 70% by mass of rayon fiber fineness of single fiber: 1.8 dtex, strength at wetness: 1.9 cN / dtex, fiber length: 38 mm
- the content of the thermoplastic resin fiber and the content of the rayon fiber contained in the nonwoven fabric 6 for skin care products are based on the total mass of the nonwoven fabric for skin care products after deseaching.
- a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using the nonwoven fabric 6 for skin care products.
- the above-mentioned evaluation was performed about the obtained face mask and cleansing sheet.
- Tables 1 and 2 summarize the structure and evaluation results of the nonwoven fabric 6 for skin care products.
- Example 7 The rayon fiber of Example 6 (single fiber fineness: 1.8 dtex, wet strength: 1.9 cN / dtex, fiber length: 38 mm) was replaced with rayon fiber (single fiber fineness: 1.6 dtex, wet strength: 1.6 cN). / Dtex, fiber length: 38 mm) in the same manner as in Example 6, except that a nonwoven fabric 7 for a skin care product having a basis weight of 65 g / m 2 was obtained. Next, a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using the nonwoven fabric 7 for skin care products. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet. Tables 1 and 2 summarize the structure and evaluation results of the nonwoven fabric 7 for skin care products.
- Example 8 The rayon fiber (single fiber fineness: 1.8 dtex, wet strength: 1.9 cN / dtex, fiber length: 38 mm) of Example 6 was replaced with rayon fiber (single fiber fineness: 1.4 dtex, wet strength: 1.1 cN). / dtex, fiber length: was changed to 38mm), in the same manner as in example 6, to give a skin care product for nonwoven 8 having a basis weight of 65 g / m 2. Next, a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using the nonwoven fabric 8 for skin care products. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet. Tables 1 and 2 summarize the structure and evaluation results of the nonwoven fabric 8 for skin care products.
- Example 9 The rayon fiber (single fiber fineness: 1.4 dtex, wet strength: 1.1 cN / dtex, fiber length: 38 mm) used in Example 8 was replaced with rayon fiber (single fiber fineness: 1.4 dtex, wet strength: 1). .1 cN / dtex, fiber length: 32 mm) in the same manner as in Example 8 to obtain a nonwoven fabric 9 for a skin care product having a basis weight of 65 g / m 2 .
- a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using the nonwoven fabric 9 for skin care products.
- the above evaluation was performed on the face mask and the cleansing sheet of this example. Tables 1 and 2 summarize the structure and evaluation results of the nonwoven fabric 9 for skin care products.
- Example 10 [Thermoplastic fiber]
- the sea component was removed by cutting a tow made of the polymer alloy fiber of Example 2 into 1 mm and treating it with a 1% aqueous sodium hydroxide solution at a temperature of 95 ° C., a bath ratio of 1:40 and a treatment time of 30 minutes. Then, short fibers of a thermoplastic resin fiber (single fiber diameter: 230 nm) were obtained.
- Nonwoven fabric for skin care products 30% by mass of the above thermoplastic resin fiber (single fiber diameter: 230 nm) and 70% by mass of rayon fiber (single fiber fineness: 1.4 dtex, wet strength: 1.1 cN / dtex, fiber length: 15 mm)
- paper was made with a basis weight of 65 g / m 2 using a square sheet machine, and entangled with a high-pressure water flow in the same manner as in Example 1 to obtain a nonwoven fabric 10 for skin care products.
- a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using this nonwoven fabric for skin care products.
- the above-mentioned evaluation was performed about the obtained face mask and cleansing sheet.
- Tables 1 and 2 summarize the structure and evaluation results of the nonwoven fabric 10 for skin care products.
- Example 11 The content of the thermoplastic resin fiber (single fiber diameter: 230 nm) of Example 8 was 20% by mass, and the content of rayon fiber (single fiber fineness: 1.4 dtex, wet strength: 1.1 cN / dtex, fiber length: 38 mm)
- a nonwoven fabric 11 for a skin care product having a basis weight of 65 g / m 2 was obtained in the same manner as in Example 8, except that the content was changed to 80% by mass.
- a face mask and a cleansing sheet were obtained in the same manner as in Example 1. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet.
- Tables 3 and 4 summarize the structure and evaluation results of the nonwoven fabric 11 for skin care products.
- Example 12 The content of the thermoplastic resin fiber (single fiber diameter: 230 nm) of Example 8 was 40% by mass, and the content of rayon fiber (single fiber fineness: 1.4 dtex, wet strength: 1.1 cN / dtex, fiber length: 38 mm)
- a nonwoven fabric 12 for a skin care product having a basis weight of 65 g / m 2 was obtained in the same manner as in Example 8 except that the content was changed to 60% by mass.
- a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using this nonwoven fabric 12 for skin care products. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet.
- Tables 3 and 4 summarize the structure and evaluation of the nonwoven fabric 12 for skin care products.
- Example 13 The content of the thermoplastic resin fiber (single fiber diameter: 230 nm) of Example 8 was 50% by mass, and the content of rayon fiber (single fiber fineness: 1.4 dtex, wet strength: 1.1 cN / dtex, fiber length: 38 mm)
- a nonwoven fabric 13 for a skin care product having a basis weight of 65 g / m 2 was obtained in the same manner as in Example 8, except that the content was changed to 50% by mass.
- a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using the nonwoven fabric 13 for skin care products. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet.
- Tables 3 and 4 summarize the structure and characteristics of the nonwoven fabric 13 for skin care products.
- Example 14 The content of the thermoplastic resin fiber (single fiber diameter: 230 nm) of Example 2 was 50% by mass, and the content of rayon fiber (single fiber fineness: 1.4 dtex, wet strength: 1.1 cN / dtex, fiber length: 38 mm) the content of 35 mass%, PET fibers (single fiber fineness: 1.6dtex) except that the content was changed to 15 mass% of, in the same manner as in example 2, skin care products for nonwoven having a basis weight of 65 g / m 2 14 was obtained. Next, a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using the nonwoven fabric 14 for skin care products. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet. Tables 3 and 4 summarize the structure and evaluation results of the nonwoven fabric 14 for skin care products.
- Example 15 Except for changing the pressure of hydroentangling in 8 MPa, in the same manner as in Example 8 to obtain a skin care product for nonwoven 15 having a basis weight of 65 g / m 2.
- a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using the nonwoven fabric 15 for skin care products.
- the above-mentioned evaluation was performed about the obtained face mask and cleansing sheet.
- Tables 3 and 4 summarize the structure and evaluation results of the nonwoven fabric 15 for skin care products.
- Example 16 A nonwoven fabric 16 for a skin care product having a basis weight of 65 g / m 2 was obtained in the same manner as in Example 8, except that the pressure of the hydroentanglement was changed to 15 MPa. Next, a face mask and a cleansing sheet were obtained using the nonwoven fabric 16 for skin care products in the same manner as in Example 1. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet. Tables 3 and 4 summarize the structure and characteristics of the nonwoven fabric 16 for skin care products.
- Example 17 A nonwoven fabric 17 for a skin care product having a basis weight of 65 g / m 2 was obtained in the same manner as in Example 4, except that the island component diameter of the sea-island composite fiber of Example 4 was changed to 600 nm. Next, a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using this nonwoven fabric 17 for skin care products. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet. Tables 3 and 4 summarize the structure and evaluation results of the nonwoven fabric 17 for skin care products.
- Example 18 A nonwoven fabric 18 for a skin care product having a basis weight of 65 g / m 2 was obtained in the same manner as in Example 8, except that the pressure of the hydroentanglement was changed to 13 MPa. Next, a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using the nonwoven fabric 18 for skin care products. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet. Tables 3 and 4 summarize the structure and evaluation results of the nonwoven fabric 18 for skin care products.
- thermoplastic resin fiber of Example 2 (island component diameter: 230 nm), 52 mass%, and polyethylene terephthalate (PET) fiber (single fiber fineness: 1.6 dtex), 48 mass%, were mixed and spread with a card, and then crossed. Wrap with a lap weber. The web was entangled with a high-pressure water stream at a pressure of 10 MPa and a speed of 1.0 m / min, and dried at a drying temperature of 100 ° C. using a pin tenter to obtain a nonwoven fabric.
- PET polyethylene terephthalate
- thermoplastic resin fiber single fiber diameter: 230 nm
- PET polyethylene terephthalate
- single fiber fineness: 1.6dtex polyethylene terephthalate
- the content of the thermoplastic resin fiber and the content of the PET fiber contained in the nonwoven fabric 19 for skin care product are based on the total mass of the nonwoven fabric 19 for skin care product after sea removal.
- a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using the nonwoven fabric 19 for skin care products.
- the above-mentioned evaluation was performed about the obtained face mask and cleansing sheet.
- Tables 5 and 6 summarize the structure and evaluation results of the nonwoven fabric 19 for skin care products.
- Example 2 The rayon fiber of Example 8 (single fiber fineness: 1.4 dtex, wet strength: 1.1 cN / dtex, fiber length: 38 mm) was replaced with lyocell fiber (single fiber fineness: 1.4 dtex, wet strength: 3.2 cN). / Dtex, fiber length: 38 mm), except that a nonwoven fabric 20 for a skin care product having a basis weight of 65 g / m 2 was obtained in the same manner as in Example 8. Next, a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using the nonwoven fabric 20 for skin care products. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet. Tables 5 and 6 summarize the structure and evaluation results of the nonwoven fabric 20 for skin care products.
- Example 3 The rayon fiber of Example 8 (single fiber fineness: 1.4 dtex, wet strength: 1.1 cN / dtex, fiber length: 38 mm) was converted to lyocell fiber (single fiber fineness: 1.25 dtex, wet strength: 2.4 cN). / dtex, fiber length: was changed to 38mm), in the same manner as in example 8 to obtain a skin care product for nonwoven 21 having a basis weight of 65 g / m 2. Next, a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using this nonwoven fabric 21 for skin care products. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet. Tables 5 and 6 summarize the structure and evaluation results of the nonwoven fabric 21 for skin care products.
- thermoplastic resin fiber of Example 2 (island component diameter: 230 nm) was 30% by mass, and the content of rayon fiber (single fiber fineness: 1.4 dtex, wet strength: 1.1 cN / dtex, fiber length: 38 mm)
- a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using this nonwoven fabric 22 for skin care products. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet.
- Tables 5 and 6 summarize the structure and evaluation results of the nonwoven fabric 22 for skin care products.
- Example 5 The content of the thermoplastic resin fiber (single fiber diameter: 230 nm) of Example 8 was 65% by mass, and the content of rayon fiber (single fiber fineness: 1.4 dtex, wet strength: 1.1 cN / dtex, fiber length: 38 mm)
- a nonwoven fabric 23 for a skin care product having a basis weight of 65 g / m 2 was obtained in the same manner as in Example 8, except that the content was changed to 35% by mass.
- a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using the nonwoven fabric 23 for skin care products. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet.
- Tables 5 and 6 summarize the structure and evaluation results of the nonwoven fabric 23 for skin care products.
- Example 6 The polymer alloy fiber of Example 8 was implemented except that the mass ratio of nylon 6 was changed to 80% by mass, the mass ratio of poly-L-lactic acid was changed to 20% by mass, and the island component diameter of the thermoplastic resin fiber was changed to 1000 nm.
- a nonwoven fabric 24 for skin care products having a basis weight of 65 g / m 2 was obtained.
- a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using the nonwoven fabric 24 for skin care products. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet. Tables 5 and 6 summarize the structure and evaluation results of the nonwoven fabric 24 for skin care products.
- Example 7 The content of the thermoplastic resin fiber (single fiber diameter: 230 nm) of Example 8 was 15% by mass, and the content of rayon fiber (single fiber fineness: 1.4 dtex, wet strength: 1.1 cN / dtex, fiber length: 38 mm)
- a non-woven fabric 25 for a skin care product having a basis weight of 65 g / m 2 was obtained in the same manner as in Example 8, except that the content was changed to 85% by mass.
- a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using the nonwoven fabric 25 for skin care products. The above-mentioned evaluation was performed about the obtained face mask and cleansing sheet.
- Tables 5 and 6 summarize the structure and evaluation results of the nonwoven fabric 25 for skin care products.
- Example 8 A nonwoven fabric for skin care products having a basis weight of 65 g / m 2 was obtained in the same manner as in Example 8, except that the pressure of the hydroentanglement was changed to 7 MPa. Next, a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using this nonwoven fabric for skin care products. The above evaluation was performed on the face mask and the cleansing sheet of this example. Tables 5 and 6 summarize the structure and evaluation results of the nonwoven fabric 26 for skin care products.
- Example 9 A nonwoven fabric for skin care products having a basis weight of 65 g / m 2 was obtained in the same manner as in Example 8, except that the pressure of the hydroentanglement was changed to 18 MPa. Next, a face mask and a cleansing sheet were obtained in the same manner as in Example 1 using this nonwoven fabric for skin care products. The above evaluation was performed on the face mask and the cleansing sheet of this example. Tables 5 and 6 summarize the structure and evaluation results of the nonwoven fabric 27 for skin care products.
- the adhesion of the face mask of Comparative Example 1 and the wiping property of the cleansing sheet were inferior to those of Examples 1 to 18 and the wiping property of the cleansing sheet.
- the non-woven fabric 19 for skin care product used for the face mask and the cleansing sheet of Comparative Example 1 has a coefficient of static friction, conformability, and softness when compressed, and the skin care product used for the face mask and the cleansing sheet of Examples 1 to 18. It is presumed that the nonwoven fabrics 1 to 18 were inferior in static friction coefficient, followability and softness during compression. Further, the adhesion of the face masks of Comparative Examples 2 and 3 and the wiping properties of the cleansing sheets were inferior to those of Examples 1 to 18 and the wiping properties of the cleansing sheets.
- the non-woven fabrics 20 and 21 for skin care products used for the face mask and the cleansing sheet of Comparative Example 2 had a static friction coefficient, a compliant property and a softness when compressed, and the non-woven fabrics 1 to 18 had a static friction coefficient, a compliant property and a compressed property. It is presumed that it was inferior in softness.
- the adhesion of the face mask of Comparative Example 4 and the wiping property of the cleansing sheet were inferior to the adhesion of the face masks of Examples 2 and 3 and the wiping property of the cleansing sheet.
- the non-woven fabric 22 for skin care product used for the face mask and the cleansing sheet of Comparative Example 4 has a static friction coefficient, a compliant property, a liquid retention property and a softness when compressed, which are the same as those of the face masks and the cleansing sheets of Examples 2 and 3. It is presumed that the nonwoven fabrics 2 and 3 for skin care products used were inferior in static friction coefficient, followability, liquid retention, and softness during compression.
- the wiping properties and the handling properties of the cleansing sheets of Comparative Example 5 were inferior to the wiping properties and the handling properties of the cleansing sheets of Examples 8 and 11 to 13. This is because the content of the thermoplastic resin fiber contained in the nonwoven fabric for skin care product 23 used in the cleansing sheet of Comparative Example 5 was compared with the content of the thermoplastic resin fiber contained in the nonwoven fabrics 8 and 11 to 13 for skin care product. I guess that is because it is high.
- the adhesion of the face mask of Comparative Example 6 and the wiping property of the cleansing sheet were inferior to those of Examples 4, 5 and 8 and the wiping property of the cleansing sheet.
- the static friction coefficient of the non-woven fabric for skin care product 24 used for the face mask and the cleansing sheet of Comparative Example 6 is the non-woven fabric for skin care product 4, 5, and 8 used for the face mask and the cleansing sheet of Examples 4, 5, and 8. It is presumed that the coefficient of static friction was poor.
- the adhesion of the face mask of Comparative Example 7 and the wiping property of the cleansing sheet were inferior to those of Examples 4, 5, and 8 and the wiping property of the cleansing sheet.
- thermoplastic resin fiber contained in the nonwoven fabric for skin care product 25 used in the face mask and the cleansing sheet of Comparative Example 7 was changed to the content of the thermoplastic resin fiber contained in the nonwoven fabrics 4, 5, and 8 for skin care product. It is presumed that this is because it is lower than the amount.
- the wiping properties and the handling properties of the cleansing sheets of Comparative Example 8 were inferior to the wiping properties and the handling properties of the cleansing sheets of Examples 8, 15, 16 and 18. This is presumed to be because the density of the nonwoven fabric 26 for skin care products used for the cleansing sheet of Comparative Example 8 was lower than the density of the nonwoven fabrics 8, 15, 16 and 18 for skin care products.
- the adhesion of the face mask of Comparative Example 9 and the wiping property of the cleansing sheet were inferior to those of the face masks of Examples 8, 15, 16 and 18 and the wiping property of the cleansing sheet. This is because the density of the nonwoven fabric 27 for skin care products used in the face mask and the cleansing sheet of Comparative Example 9 is higher than the density of the nonwoven fabrics 8, 15, 16 and 18 for skin care products. It is presumed that the softness at the time of compression was inferior to the followability and the softness at the time of compression of the nonwoven fabrics 8, 15, 16 and 18 for skin care products.
- the adhesiveness after 20 minutes of the face mask of Example 3 and the wiping property of the cleansing sheet were superior to the adhesiveness after 20 minutes of the face mask of Example 2 and the wiping property of the cleansing sheet.
- the cross-sectional shape of the PET fiber contained in the nonwoven fabric for skin care product 3 of Example 3 is a circular cross section
- the cross-sectional shape of the PET fiber contained in the nonwoven fabric 3 for skin care product of Example 3 is a flat multi-leaf.
- the non-woven fabric 3 for skin care products had a static friction coefficient, conformability, liquid retaining property, and softness during compression that were superior to the static friction coefficient, conformability, liquid retaining property, and softness during compression of the non-woven fabric 2. Guess.
- the adhesion after 20 minutes and the wiping property of the cleansing sheet of the face mask of Example 5 were superior to those of the face mask of Example 4 after 20 minutes and the wiping property of the cleansing sheet.
- the non-woven fabric 5 for skin care product used for the face mask and the cleansing sheet of Example 5 has a static friction coefficient, a compliant property, a liquid retention property and a softness when compressed, which are the static friction coefficient of the non-woven fabric 4 for skin care product of Example 4. It is presumed that this was because it was superior to the following property, the liquid retention property and the softness during compression.
- the followability of the face mask of Example 8 and the wiping property of the cleansing sheet were superior to those of the face masks of Examples 6 and 7 and the wiping property of the cleansing sheet.
- the non-woven fabric 8 for skin care products and the non-woven fabric 7 for skin care products used in the face masks and cleansing sheets of Examples 6 and 7 have the following property, the liquid retention property and the softness during compression of the non-woven fabric 8 for skin care products. It is presumed that this was because it was superior to the following property, liquid retention property and softness during compression.
- the adhesion after 20 minutes and the wiping property of the cleansing sheet of the face mask of Example 8 were superior to the adhesion and wiping property of the cleansing sheet after 20 minutes of the face mask of Example 1.
- the non-woven fabric 8 for skin care product has a static friction coefficient, a following property, a liquid retention property and a softness when compressed, which are the same as those of the non-woven fabric 1 for skin care product used for the face mask and the cleansing sheet in Example 1. It is presumed that the reason was that it was superior to the liquid retention property and the softness at the time of compression.
- the wiping property of the cleansing sheet of Example 8 was superior to the wiping property of the cleansing sheet of Example 9. This is because the fiber length of the rayon fiber contained in the nonwoven fabric 8 for skin care product is larger than the fiber length of the rayon fiber contained in the nonwoven fabric 9 for skin care product used in the cleansing sheet of Example 9, so that the degree of entanglement is small.
- the nonwoven fabric 8 for skin care products is more advanced than the nonwoven fabric 9 for skin care products, and as a result, the wet strength of the nonwoven fabric 8 for skin care products is greater than the wet strength of the nonwoven fabric 9 for skin care products. I guess it is. The same can be said for the fact that the cleansing sheet of Example 8 had better wiping properties than the cleansing sheet of Example 10.
- the softness of the face mask of Example 8 when compressed was superior to the softness of the face mask of Example 10 when compressed. This is presumed to be because the nonwoven fabric 8 for skin care products is a dry nonwoven fabric and the nonwoven fabric 10 for skin care products is a wet nonwoven fabric.
- the adhesiveness of the face mask of Example 8 the softness at the time of compression, and the wiping property of the cleansing sheet were smaller than the adhesiveness of the face mask of Example 11, the softness at the time of compression, and the wiping property of the cleansing sheet. It was excellent. This is because the content of the thermoplastic resin fiber contained in the nonwoven fabric 8 for skin care product is higher than the content of the thermoplastic resin fiber contained in the nonwoven fabric 11 for skin care product used in the face mask and the cleansing sheet of Example 11. To guess. Further, the handleability of the cleansing sheet of Example 8 was superior to the handleability of the cleansing sheet of Example 12. This is presumed to be because the content of the thermoplastic resin fiber contained in the nonwoven fabric 8 for skin care product is lower than the content of the thermoplastic resin fiber contained in the nonwoven fabric 12 for skin care product used in the cleansing sheet of Example 12. I do.
- the wiping properties and the handling properties of the cleansing sheets of Example 8 were superior to the wiping properties and the handling properties of the cleansing sheets of Examples 13 and 14. This is because the content of the thermoplastic resin fibers contained in the nonwoven fabric 8 for skin care products is the content of the thermoplastic resin fibers contained in the nonwoven fabrics 13 and 14 for skin care products used in the cleansing sheets of Examples 13 and 14. I guess it is lower than.
- the cleansing sheet of Example 8 had better wiping properties and handleability than the cleansing sheet of Example 15 had. This is presumably because the density of the nonwoven fabric 8 for skin care products was higher than the density of the nonwoven fabric 15 for skin care products used in the cleansing sheet of Example 15. In addition, the followability of the face mask of Example 8 and the softness during compression were superior to the followability and the softness of the face mask of Example 16 during compression. This is presumably because the density of the nonwoven fabric 8 for skin care products was lower than the density of the nonwoven fabric 16 for skin care products used for the face mask of Example 16.
- the adhesion of the face mask of Example 17 after 20 minutes was superior to the adhesion of the face mask of Example 4 after 20 minutes.
- the non-woven fabric 17 for skin care product used for the face mask of Example 17 has a static friction coefficient, a compliant property, a liquid retention property and a softness when compressed, and the static friction coefficient, the compliant property, and the liquid retention property of the non-woven fabric 4 for a skin care product. It is presumed that the reason was that it was superior to the softness during compression. Further, the followability of the face mask of Example 18 and the softness at the time of compression were superior to the followability of the face mask of Example 16 and the softness at the time of compression. This is presumed to be because the density of the nonwoven fabric 18 for skin care products used for the face mask of Example 18 was lower than the density of the nonwoven fabric 16 for skin care products used for the face mask of Example 16.
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Abstract
Description
(1)単繊維直径が50nm以上800nm以下の熱可塑性樹脂ファイバーと、セルロース繊維と、を含むスキンケア製品用不織布であって、前記セルロース繊維は、JIS L 1015:2010 8.7.2に準じて測定される引張強度が1.9cN/dtex以下であり、前記スキンケア製品用不織布の全質量に対する前記熱可塑性樹脂ファイバーと前記セルロース繊維との合計含有量が85質量%以上であり、さらに、前記熱可塑性樹脂ファイバーと前記セルロース繊維との含有質量比(熱可塑性樹脂ファイバー/セルロース繊維)が、0.23~1.50であり、前記スキンケア製品用不織布の密度が0.08~0.16g/cm3である、スキンケア製品用不織布、
(2)前記熱可塑性樹脂ファイバーが、ポリアミド繊維である、(1)のスキンケア製品用不織布、
(3)前記セルロース繊維が、レーヨンである、(1)または(2)のスキンケア製品用不織布、
(4)前記セルロース繊維の繊維長が、35mm以上である、(1)~(3)のスキンケア製品用不織布、
(5)密度が0.08~0.14g/cm3である、(1)~(4)のいずれかに記載のスキンケア製品用不織布、
(6)(1)~(5)のいずれかのスキンケア製品用不織布を有する、フェイスマスク、
(7)(1)~(5)のいずれかのスキンケア製品用不織布を有する、クレンジングシートである。
本発明のスキンケア製品用不織布に用いられる熱可塑性樹脂ファイバーは、単繊維直径が50nm以上800nm以下の繊維である。熱可塑性樹脂ファイバーの単繊維直径を50nm以上とすることで、スキンケア製品用不織布を用いたスキンケア製品の使用時に熱可塑性樹脂ファイバーが脱落し皮膚へ残留することが抑制できる。一方、単繊維直径を800nm以下とすることで、皮膚とスキンケア製品用不織布の表面との接触面積が増大し、皮膚とスキンケア製品用不織布との摩擦係数が向上するため、スキンケア製品用不織布が皮膚表面で滑ることが抑制され、このスキンケア製品用不織布を用いたスキンケア製品の密着性や拭取り性が優れたものになる。上記の理由から、熱可塑性樹脂ファイバーの単繊維直径の上限は、600nm以下であることがより好ましく、300nm以下であることがさらに好ましい。
ここで、ポリアミドとしては、例えば、ナイロン6、ナイロン11、ナイロン12、ナイロン66、各種のアラミド樹脂を用いることができる。これらの中でも吸水性の良好なナイロン6が好ましく用いられる。
密度(g/cm3)=目付(g/m2)/厚さ(mm)/1000
(1)セルロース繊維の引張強度
JIS L 1015:2010 8.7.2に基づいて、セルロース繊維の引張強度を測定した。
具体的には、スキンケア製品用不織布からセルロース繊維を50本採取した。次に、各繊維を水中に2分間浸漬した後、50本のセルロース繊維の中から一本を定速伸長形引張試験機に取り付け、引張強度を水中で測定した。この測定を50本のセルロース繊維について行った。つかみ間隔は20mmとし、20mm/minの引張速度で、試料が切断するまで荷重を加え、その時の強さを測定し、50回の引張強度測定の測定結果の平均値を算出し、セルロース繊維の引張強度とした。尚、繊維が短く、つかみ間隔が20mmで試験できない場合には、つかみ間隔10mmとし、10mm/minの引張速度で、試料が切断するまで荷重を加え、その時の強さを測定した。
JIS L 1015:2010 8.4.1 直接法(C法)に基づいて、セルロース繊維の繊維長を測定した。具体的には、80mm×80mmのサイズのスキンケア製品用不織布を試料として用意した。この試料の一方の面において、この試料の中心点と中心点を共有する直径6cmの円を描いた。次に、この円の内側からセルロース繊維を無作為に1本ずつ取り出し、合計25本のセルロース繊維を採取した。この操作と同様の操作を、この試料の他方の面においても行った。そして、この試料から得られた合計50本のセルロース繊維の繊維長を以下のように測定した。
無作為に取り出した1本のセルロース繊維を、伸長させることなく、まっすぐに伸ばした。次に、置尺上にて、まっすぐに伸ばした状態のセルロース繊維の繊維長をmm単位まで測定した、この測定を50本のセルロース繊維について行い、50本の平均値を算出しセルロース繊維の繊維長とした。
JIS L 1913:1998 6.2に基づいて測定した。具体的には、スキンケア製品用不織布の試料から50mm×50mmの試験片を、鋼製定規とかみそり刃とを用いて3枚採取した。標準状態における試験片の質量を測定して、単位面積当たりの質量を次の式によって求め、平均値を算出した。
ms=m/S
ms:単位面積当たりの質量(g/m2)
m:試験片の平均質量(g)
S:試験片の面積(m2)
JIS L1913:1998 6.1.2 A法に基づいて測定した。スキンケア製品用不織布の試料から50mm×50mmの試験片を、鋼製定規とかみそり刃とを用いて5枚採取した。厚さ測定器(TECLOCK社製定圧厚さ測定器、型式PG11J)を用いて標準状態で試験片に0.36kPaの圧力を10秒間かけて厚さを測定した。測定は各試験片(5枚)について行い、平均値を算出した。
上記(3)の目付と、上記(4)の厚さから、次の式によって求めた。
密度(g/cm3)=目付(g/m2)/厚さ(mm)/1000
JIS P8147:1994 3.2傾斜方法に準じて測定した。具体的には、幅30mm、長さ130mmの試験片(スキンケア製品用不織布)を、スキンケア製品用不織布の製造装置の進行方向が長さ方向となる試験片を5枚、製造装置の進行方向と垂直な方向が長さ方向となる試験片を5枚、計10枚用意した。進行方向の評価については、試験片を化粧水(無印良品「化粧水・敏感肌用しっとりタイプ」)中に10分間浸漬し、取り出してから速やかに滑り傾斜角測定装置の重りに取り付けた。一方、シリコン疑似皮膚(ビューラックス製)を滑り傾斜角測定装置に取り付け、試験片を取り付けた重りを試験片の測定面がシリコン疑似皮膚に接触し、かつ、試験片の進行方向(長さ方向)と滑り傾斜角測定装置の滑り方向とが一致するように疑似皮膚上に上載し、傾け角度3°/秒未満の条件で、重りが落下したときの傾斜角を読み取り、前記傾斜角の正接(tanθ)を静摩擦係数とした。また、進行方向と垂直な方向の評価については、試験片の進行方向と垂直な方向(長さ方向)と滑り傾斜角測定装置の滑り方向とが一致するように疑似皮膚上に上載して、同様に評価した。得られた10枚の試験片の静摩擦係数の平均を本発明のスキンケア製品用不織布の静摩擦係数とした。尚、測定値の変動を防ぐため、上記測定に使用する化粧水は、開封後一ヶ月以内のものとし、上記測定に使用する擬似皮膚は、使用回数が5回以上50回以下のものを使用することとする。
JIS L 1913:1998 6.3.2に基づいて測定した。具体的には、幅25mm、長さ150mmの試験片(スキンケア製品用不織布)を、スキンケア製品用不織布の製造装置の進行方向が長さ方向となる試験片を5枚、製造装置の進行方向と垂直な方向が長さ方向となる試験片を5枚、計10枚用意した。進行方向の評価については、試験片を20℃の蒸留水中に10分間浸漬し、取り出してから速やかに引張方向が試験片の進行方向(長さ方向)となるように定速伸長形引張試験機に取り付け、つかみ間隔:100mm、引張速度:200mm/minの条件で、試験片が切断するまで荷重を加え、試験片が20mm伸長した際の応力(N/25mm)を、応力ひずみ曲線から読み取り、20%伸長応力とした。また、進行方向と垂直な方向の評価については、引張方向が試験片の進行方向と垂直な方向(長さ方向)となるように定速伸長形引張試験機に取り付け、同様に評価した。得られた各方向の20%伸長応力の平均値のうち低い方の値を、スキンケア製品用不織布の20%伸長応力とした。
温度20℃×湿度60%RHの雰囲気下で24hr調湿した試料から、幅25mm、長さ25mmの試験片(スキンケア製品用不織布)を5枚採取した。次いでこの試験片の質量(g)を測定した。また、シリコン疑似皮膚(ビューラックス製、サイズ:φ50mm)の質量(g)を測定した。試験片をこのシリコン疑似皮膚に上載し、この試験片に化粧水(無印良品「化粧水・敏感肌用しっとりタイプ」)を滴下し、試験片の全質量に対し該化粧水を700質量%含有する試験片を得た。この状態で、試験片とシリコン疑似皮膚と化粧水との初期の合計質量(g)を測定し、次いで、温度20℃×湿度60%RHの恒温恒湿槽に、この試験片を投入した。20分後に上記のサンプルを取り出し、試験片とシリコン疑似皮膚と化粧水との20分後の合計質量(g)を測定し、下式により化粧水の質量保持率(%)を算出した。測定は5枚行い平均値を算出した。
初期の化粧水質量(g)=初期の合計質量(g)-シリコン疑似皮膚の質量(g)-試験片の質量(g)
20分後の化粧水質量=20分後の合計質量(g)-シリコン疑似皮膚の質量(g)-試験片の質量(g)
化粧水の質量保持率(%)=20分後の化粧水質量(g)/初期の化粧水質量(g)×100
スキンケア製品用不織布から60mm×60mmの試験片を5枚採取した。試験片を20℃の蒸留水中に10分間浸漬し、取り出してから速やかにKES圧縮試験機(カトーテック(株)製、型式:KES-G5)に取り付け、圧縮速度:20μm/sec、最大圧縮荷重:4.9kPa、加圧板:2cm2(円形)の条件で試料を圧縮した際のWC値(最大圧力までの仕事量:gf・cm/cm2)を測定、その平均値を算出し、スキンケア製品用不織布の圧縮時の柔らかさとした。
[フェイスマスク]
各実施例および比較例で得られたスキンケア製品用不織布をマスク形に打ち抜きフェイスマスク用不織布を作成し、フェイスマスク用不織布を化粧水(無印良品「化粧水・敏感肌用しっとりタイプ」)に浸漬し、フェイスマスク用不織布の全質量に対し該化粧水を700質量%含有するフェイスマスクを得た。次いで、このフェイスマスクの、使用開始直後の密着性および使用開始後20分経過時の密着性、追従性、乾燥のしにくさ、圧縮時の柔らかさ、ならびにフェイスマスクの取扱性について女性パネル10名により各人の絶対評価にて10点満点で評価し、10名の平均点(小数点以下は四捨五入)から下記基準にて評価した。なお、点数が大きいほど、フェイスマスクの性能はより優れている。
A:9~10点
B:6~8点
C:3~5点
D:0~2点
各実施例および比較例で得られたスキンケア製品用不織布を幅70mm、長さ55mmに裁断し、この裁断不織布をクレンジング剤(コーセーコスメポート(株)「ホワイトクレンジングウォーター」)に浸漬し、裁断不織布の全質量に対しクレンジング剤を700質量%含有するクレンジングシートを得た。次いで、このクレンジングシートを、アイラインに付着した化粧料(資生堂(株)「ベネフィーク セオティ スマートリキッドアイライナー」(登録商標))の拭取り性、および不織布の取扱性について女性パネル10名により各人の絶対評価にて10点満点で評価し、10名の平均点(小数点以下は四捨五入)から下記基準にて評価した。なお、点数が大きいほど、クレンジングシートンの性能はより優れている。
A:9~10点
B:6~8点
C:3~5点
D:0~2点
各実施例および比較例で得られたスキンケア製品用不織布からなるフェイスマスク、およびクレンジングシートの使用感の総合評価について、上記(10)のモニター評価を実施の女性パネル10名により各人の絶対評価にて10点満点で評価し、10名の平均点(小数点以下は四捨五入)から下記基準にて評価した。なお、点数が大きいほど、フェイスマスクおよびクレンジングシートンの性能はより優れている。
A:9~10点
B:6~8点
C:3~5点
D:0~2点
[熱可塑性樹脂ファイバー]
(海島複合繊維)
島成分として、ポリエチレンテレフタレート(PET 溶融粘度:160Pa・s)と海成分として、5-ナトリウムスルホイソフタル酸8.0モル%共重合したPET(共重合PET 溶融粘度:95Pa・s)を290℃で別々に溶融後、計量し、既知の複合口金(国際公開第2012/173116号の図6(b)に開示された配列の複合口金)が組み込まれ、1つの吐出孔あたり島成分用として1000の分配孔を穿設した分配プレートを使用した紡糸パックに、海/島成分の複合比が60/40となるように流入し、吐出孔から複合ポリマー流を吐出して溶融紡糸を行い、未延伸繊維を得た。これを、延伸速度800m/minで延伸し、島成分径が230nm、150dtex-15フィラメントの海島複合繊維を得た。得られた海島複合繊維の強度は、3.6cN/dtex、伸度30%の優れた特性を示した。
(捲縮・カット工程)
上記海島複合繊維からなるフィラメントに捲縮(12山/25mm)を施した後、51mmの短繊維にカットして熱可塑性樹脂ファイバーを得た。
上記の熱可塑性樹脂ファイバー(島成分径:230nm)52質量%と、レーヨン繊維(単繊維繊度:1.4dtex、湿潤時強度:1.1cN/dtex、繊維長:38mm)48質量%を、カードで混綿、開繊した後、クロスラップウエーバーでウエッブとした。このウエッブを、圧力:10MPa、速度1.0m/minの条件で高圧水流により絡合させ、ピンテンターを用いて乾燥温度:100℃で乾燥し、不織布を得た。前記不織布に対して、1%水酸化ナトリウム水溶液で温度95℃、浴比1:40、処理時間30分にて処理することにより、海成分を脱海し、熱可塑性樹脂ファイバー(単繊維直径:230nm)30質量%と、レーヨン繊維(単繊維繊度:1.4dtex、湿潤時強度:1.1cN/dtex、繊維長:38mm)70質量%を含む、65g/m2のスキンケア製品用不織布1を得た。なお、上記のスキンケア製品用不織布1に含まれる熱可塑性樹脂ファイバーの含有量とレーヨン繊維の含有量は、上記の脱海後のスキンケア製品用不織布の全質量に対してのものである。
さらに、このスキンケア製品用不織布1をマスク形に打ち抜きフェイスマスクを得た。また、フェイスマスクとは別に、このスキンケア製品用不織布1を幅70mm、長さ55mmに裁断しクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布1の構成および評価結果を表1および2にまとめた。
[熱可塑性樹脂ファイバー]
(ポリマーアロイ繊維)
溶融粘度212Pa・s(262℃、剪断速度121.6sec-1)、融点220℃のナイロン6(N6)(40質量%)と、重量平均分子量12万、溶融粘度30Pa・s(240℃、剪断速度2432sec-1)、融点170℃で光学純度99.5%以上のポリL乳酸(60質量%)とを別々に計量し、別々に下記詳細の2軸押し出し混練機に供給し、220℃で混練してポリマーアロイチップを得た。
スクリュー形状:同方向完全噛合型 2条ネジ
スクリュー :直径37mm、有効長さ1670mm、L/D=45.1
混練部長さはスクリュー有効さの28%
混練部はスクリュー有効長さの1/3より吐出側に位置さ
せた
途中3箇所のバックフロー部有り
ベント :2箇所。
得られたポリマーアロイチップを、ステープル用紡糸機の一軸押し出し型溶融装置に供給し、溶融温度235℃、紡糸温度235℃(口金面温度220℃)、紡糸速度1200m/minとして溶融紡糸を行い、ポリマーアロイ繊維を得た。これを合糸した後、スチーム延伸を行い単糸繊度3.0dtexのポリマーアロイ繊維からなるトウを得た。得られたポリマーアロイ繊維の強度は、3.5cN/dtex、伸度45%、U%=1.0%の優れた特性を示した。
(捲縮・カット工程)
上記ポリマーアロイ繊維からなるトウに捲縮(12山/25mm)を施した後、51mmの短繊維にカットして熱可塑性樹脂ファイバーを得た。
上記の熱可塑性樹脂ファイバー(島成分径:230nm)52質量%と、レーヨン繊維(単繊維繊度:1.4dtex、湿潤時強度:1.1cN/dtex、繊維長:38mm)38質量%、ポリエチレンテレフタレート(PET)繊維(単繊維繊度:1.6dtex)10質量%を、カードで混綿、開繊した後、クロスラップウエーバーでウエッブとした。このウエッブを、圧力:10MPa、速度1.0m/minの条件で高圧水流により絡合させ、ピンテンターを用いて乾燥温度:100℃で乾燥し、不織布を得た。前記不織布に対して、1%水酸化ナトリウム水溶液で温度95℃、浴比1:40、処理時間30分にて処理することにより、海成分を脱海し、熱可塑性樹脂ファイバー(単繊維直径:230nm)30質量%と、レーヨン繊維(単繊維繊度:1.4dtex、湿潤時強度:1.1cN/dtex、繊維長:38mm)55質量%、ポリエチレンテレフタレート(PET)繊維(単繊維繊度:1.6dtex)15質量%を含む、65g/m2のスキンケア製品用不織布2を得た。なお、上記のスキンケア製品用不織布に含まれる熱可塑性樹脂ファイバーの含有量とレーヨン繊維、PET繊維の含有量は、上記の脱海後のスキンケア製品用不織布の全質量に対してのものである。
さらに、このスキンケア製品用不織布2を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布2の構成および評価結果を表1および2にまとめた。
実施例2のPET繊維を、PETからなる扁平多葉断面ポリエステル繊維(単繊維繊度:1.7dtex)に変更した以外は、実施例2と同様にして、目付65g/m2のスキンケア製品用不織布3を得た。
次に、このスキンケア製品用不織布3を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布3の構成および評価結果を表1および2にまとめた。
実施例1の海島複合繊維の島成分をナイロン6(N6 溶融粘度:190Pa・s)として、紡糸温度を270℃に変更し、海島複合繊維の島成分径を700nmに変更した以外は、実施例1と同様にして、目付65g/m2のスキンケア製品用不織布4を得た。
次に、このスキンケア製品用不織布4を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布4の構成および評価結果を表1および2にまとめた。
実施例4の海島複合繊維の島成分径を300nmに変更した以外は、実施例4と同様にして、目付65g/m2のスキンケア製品用不織布5を得た。
次に、このスキンケア製品用不織布5を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布5の構成および評価結果を表1および2にまとめた。
実施例2の熱可塑性樹脂ファイバー(島成分径:230nm)52質量%と、レーヨン繊維(単繊維繊度:1.8dtex、湿潤時強度:1.9cN/dtex、繊維長:38mm)48質量%を、カードで混綿、開繊した後、クロスラップウエーバーでウエッブとした。このウエッブを、圧力:10MPa、速度1.0m/minの条件で高圧水流により絡合させ、ピンテンターを用いて乾燥温度:100℃で乾燥し、不織布を得た。前記不織布に対して、1%水酸化ナトリウム水溶液で温度95℃、浴比1:40、処理時間30分にて処理することにより、海成分を脱海し、熱可塑性樹脂ファイバー(単繊維直径:230nm)30質量%と、レーヨン繊維(単繊維繊度:1.8dtex、湿潤時強度:1.9cN/dtex、繊維長:38mm)70質量%を含む、目付65g/m2のスキンケア製品用不織布6を得た。なお、上記のスキンケア製品用不織布6に含まれる熱可塑性樹脂ファイバーの含有量とレーヨン繊維の含有量は、上記の脱海後のスキンケア製品用不織布の全質量に対してのものである。
次に、このスキンケア製品用不織布6を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布6の構成および評価結果を表1および2にまとめた。
実施例6のレーヨン繊維(単繊維繊度:1.8dtex、湿潤時強度:1.9cN/dtex、繊維長:38mm)を、レーヨン繊維(単繊維繊度:1.6dtex、湿潤時強度:1.6cN/dtex、繊維長:38mm)に変更した以外は、実施例6と同様にして、目付65g/m2のスキンケア製品用不織布7を得た。
次に、このスキンケア製品用不織布7を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布7の構成および評価結果を表1および2にまとめた。
実施例6のレーヨン繊維(単繊維繊度:1.8dtex、湿潤時強度:1.9cN/dtex、繊維長:38mm)を、レーヨン繊維(単繊維繊度:1.4dtex、湿潤時強度:1.1cN/dtex、繊維長:38mm)に変更した以外は、実施例6と同様にして、目付65g/m2のスキンケア製品用不織布8を得た。
次に、このスキンケア製品用不織布8を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布8の構成および評価結果を表1および2にまとめた。
実施例8で用いたレーヨン繊維(単繊維繊度:1.4dtex、湿潤時強度:1.1cN/dtex、繊維長:38mm)を、レーヨン繊維(単繊維繊度:1.4dtex、湿潤時強度:1.1cN/dtex、繊維長:32mm)に変更した以外は、実施例8と同様にして、目付65g/m2のスキンケア製品用不織布9を得た。
次に、このスキンケア製品用不織布9を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。本実施例のフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布9の構成および評価結果を表1および2にまとめた。
[熱可塑性樹脂ファイバー]
実施例2のポリマーアロイ繊維からなるトウを1mmにカットして、1%水酸化ナトリウム水溶液で温度95℃、浴比1:40、処理時間30分にて処理することにより、海成分を脱海し、熱可塑性樹脂ファイバー(単繊維直径:230nm)の短繊維を得た。
[スキンケア製品用不織布]
上記の熱可塑性樹脂ファイバー(単繊維直径:230nm)30質量%と、レーヨン繊維(単繊維繊度:1.4dtex、湿潤時強度:1.1cN/dtex、繊維長:15mm)70質量%を、混合攪拌した後、角型シートマシンにより目付65g/m2で抄紙し、実施例1と同一の方法で高圧水流により絡合させ、スキンケア製品用不織布10を得た。
次に、このスキンケア製品用不織布を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布10の構成および評価結果を表1および2にまとめた。
実施例8の熱可塑性樹脂ファイバー(単繊維直径:230nm)の含有量を20質量%、レーヨン繊維(単繊維繊度:1.4dtex、湿潤時強度:1.1cN/dtex、繊維長:38mm)の含有量を80質量%に変更した以外は実施例8と同様にして、目付65g/m2のスキンケア製品用不織布11を得た。
次に、このスキンケア製品用不織布11を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布11の構成および評価結果を表3および4にまとめた。
実施例8の熱可塑性樹脂ファイバー(単繊維直径:230nm)の含有量を40質量%、レーヨン繊維(単繊維繊度:1.4dtex、湿潤時強度:1.1cN/dtex、繊維長:38mm)の含有量を60質量%に変更した以外は実施例8と同様にして、目付65g/m2のスキンケア製品用不織布12を得た。
次に、このスキンケア製品用不織布12を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布12の構成および評価を表3および4にまとめた。
実施例8の熱可塑性樹脂ファイバー(単繊維直径:230nm)の含有量を50質量%、レーヨン繊維(単繊維繊度:1.4dtex、湿潤時強度:1.1cN/dtex、繊維長:38mm)の含有量を50質量%に変更した以外は実施例8と同様にして、目付65g/m2のスキンケア製品用不織布13を得た。
次に、このスキンケア製品用不織布13を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布13の構成および特徴を表3および4にまとめた。
実施例2の熱可塑性樹脂ファイバー(単繊維直径:230nm)の含有量を50質量%、レーヨン繊維(単繊維繊度:1.4dtex、湿潤時強度:1.1cN/dtex、繊維長:38mm)の含有量を35質量%にし、PET繊維(単繊維繊度:1.6dtex)の含有量を15質量%に変更した以外は、実施例2と同様にして、目付65g/m2のスキンケア製品用不織布14を得た。
次に、このスキンケア製品用不織布14を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布14の構成および評価結果を表3および4にまとめた。
水流交絡の圧力を8MPaに変更した以外は、実施例8と同様にして、目付65g/m2のスキンケア製品用不織布15を得た。
次に、このスキンケア製品用不織布15を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布15の構成および評価結果を表3および4にまとめた。
水流交絡の圧力を15MPaに変更した以外は、実施例8と同様にして、目付65g/m2のスキンケア製品用不織布16を得た。
次に、このスキンケア製品用不織布16を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布16の構成および特徴を表3および4にまとめた。
実施例4の海島複合繊維の島成分径を600nmに変更した以外は、実施例4と同様にして、目付65g/m2のスキンケア製品用不織布17を得た。
次に、このスキンケア製品用不織布17を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布17の構成および評価結果を表3および4にまとめた。
水流交絡の圧力を13MPaに変更した以外は、実施例8と同様にして、目付65g/m2のスキンケア製品用不織布18を得た。
次に、このスキンケア製品用不織布18を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布18の構成および評価結果を表3および4にまとめた。
実施例2の熱可塑性樹脂ファイバー(島成分径:230nm)52質量%と、ポリエチレンテレフタレート(PET)繊維(単繊維繊度:1.6dtex)48質量%を、カードで混綿、開繊した後、クロスラップウエーバーでウエッブとした。このウエッブを、圧力:10MPa、速度1.0m/minの条件で高圧水流により絡合させ、ピンテンターを用いて乾燥温度:100℃で乾燥し、不織布を得た。前記不織布に対して、1%水酸化ナトリウム水溶液で温度95℃、浴比1:40、処理時間30分にて処理することにより、海成分を脱海し、熱可塑性樹脂ファイバー(単繊維直径:230nm)30質量%と、ポリエチレンテレフタレート(PET)繊維(単繊維繊度:1.6dtex)70質量%を含む、目付65g/m2のスキンケア製品用不織布19を得た。なお、上記のスキンケア製品用不織布19に含まれる熱可塑性樹脂ファイバーの含有量とPET繊維の含有量は、上記の脱海後のスキンケア製品用不織布19の全質量に対してのものである。
次に、このスキンケア製品用不織布19を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布19の構成および評価結果を表5および6にまとめた。
実施例8のレーヨン繊維(単繊維繊度:1.4dtex、湿潤時強度:1.1cN/dtex、繊維長:38mm)を、リヨセル繊維(単繊維繊度:1.4dtex、湿潤時強度:3.2cN/dtex、繊維長:38mm)に変更した以外は、実施例8と同様にして、目付65g/m2のスキンケア製品用不織布20を得た。
次に、このスキンケア製品用不織布20を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布20の構成および評価結果を表5および6にまとめた。
実施例8のレーヨン繊維(単繊維繊度:1.4dtex、湿潤時強度:1.1cN/dtex、繊維長:38mm)を、リヨセル繊維(単繊維繊度:1.25dtex、湿潤時強度:2.4cN/dtex、繊維長:38mm)に変更した以外は、実施例8と同様にして、目付65g/m2のスキンケア製品用不織布21を得た。
次に、このスキンケア製品用不織布21を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布21の構成および評価結果を表5および6にまとめた。
実施例2の熱可塑性樹脂ファイバー(島成分径:230nm)の含有量を30質量%、レーヨン繊維(単繊維繊度:1.4dtex、湿潤時強度:1.1cN/dtex、繊維長:38mm)の含有量を50質量%、PET繊維(単繊維繊度:1.6dtex)の含有量を20質量%に変更した以外は、実施例2と同様にして、目付65g/m2のスキンケア製品用不織布22を得た。
次に、このスキンケア製品用不織布22を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布22の構成および評価結果を表5および6にまとめた。
実施例8の熱可塑性樹脂ファイバー(単繊維直径:230nm)の含有量を65質量%、レーヨン繊維(単繊維繊度:1.4dtex、湿潤時強度:1.1cN/dtex、繊維長:38mm)の含有量を35質量%に変更した以外は、実施例8と同様にして、目付65g/m2のスキンケア製品用不織布23を得た。
次に、このスキンケア製品用不織布23を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布23の構成および評価結果を表5および6にまとめた。
実施例8のポリマーアロイ繊維について、ナイロン6の質量比を80質量%、ポリL乳酸の質量比を20質量%に変更し、熱可塑性樹脂ファイバーの島成分径を1000nmに変更した以外は、実施例8と同様にして、目付65g/m2のスキンケア製品用不織布24を得た。
次に、このスキンケア製品用不織布24を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布24の構成および評価結果を表5および6にまとめた。
実施例8の熱可塑性樹脂ファイバー(単繊維直径:230nm)の含有量を15質量%、レーヨン繊維(単繊維繊度:1.4dtex、湿潤時強度:1.1cN/dtex、繊維長:38mm)の含有量を85質量%に変更した以外は、実施例8と同様にして、目付65g/m2のスキンケア製品用不織布25を得た。
次に、このスキンケア製品用不織布25を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。得られたフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布25の構成および評価結果を表5および6にまとめた。
水流交絡の圧力を7MPaに変更した以外は、実施例8と同様にして、目付65g/m2のスキンケア製品用不織布を得た。
次に、このスキンケア製品用不織布を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。本実施例のフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布26の構成および評価結果を表5および6にまとめた。
水流交絡の圧力を18MPaに変更した以外は、実施例8と同様にして、目付65g/m2のスキンケア製品用不織布を得た。
次に、このスキンケア製品用不織布を用いて実施例1と同一の方法でフェイスマスクおよびクレンジングシートを得た。本実施例のフェイスマスクおよびクレンジングシートについて上記の評価を行った。スキンケア製品用不織布27の構成および評価結果を表5および6にまとめた。
また、比較例2および3のフェイスマスクの密着性やクレンジングシートの拭取り性は、実施例1~18のフェイスマスクの密着性やクレンジングシートの拭取り性に比べ劣っていた。これは、比較例2のフェイスマスクやクレンジングシートに用いたスキンケア製品用不織布20および21の静摩擦係数、追従性および圧縮時の柔らかさが、不織布1~18の静摩擦係数、追従性および圧縮時の柔らかさに劣っていたためと推測する。
また、比較例5のクレンジングシートの拭取り性や取扱性は、実施例8、11~13のクレンジングシートの拭取り性や取扱性に比べ劣っていた。これは、比較例5のクレンジングシートに用いたスキンケア製品用不織布23が含有する熱可塑性樹脂ファイバーの含有量が、スキンケア製品用不織布8、11~13が含有する熱可塑性樹脂ファイバーの含有量と比べ高いためであると推測する。
また、比較例7のフェイスマスクの密着性やクレンジングシートの拭取り性は、実施例4、5および8のフェイスマスクの密着性やクレンジングシートの拭取り性に比べ劣っていた。これは、比較例7のフェイスマスクやクレンジングシートに用いたスキンケア製品用不織布25が含有する熱可塑性樹脂ファイバーの含有量が、スキンケア製品用不織布4、5および8が含有する熱可塑性樹脂ファイバーの含有量と比べ低いためであると推測する。
比較例9のフェイスマスクの密着性やクレンジングシートの拭取り性は、実施例8、15、16および18のフェイスマスクの密着性やクレンジングシートの拭取り性に比べ劣っていた。これは、比較例9のフェイスマスクやクレンジングシートに用いたスキンケア製品用不織布27の密度が、スキンケア製品用不織布8、15、16および18の密度に比べ高く、スキンケア製品用不織布27の追従性および圧縮時の柔らかさが、スキンケア製品用不織布8、15、16および18の追従性および圧縮時の柔らかさに劣っていたためと推測する。
また、実施例5のフェイスマスクの20分後の密着性やクレンジングシートの拭取り性は、実施例4のフェイスマスクの20分後の密着性やクレンジングシートの拭取り性に比べ優れていた。これは、実施例5のフェイスマスクやクレンジングシートに用いたスキンケア製品用不織布5の静摩擦係数、追従性、保液性および圧縮時の柔らかさが、実施例4のスキンケア製品用不織布4の静摩擦係数、追従性、保液性および圧縮時の柔らかさよりも優れていたためであると推測する。
また、実施例8のフェイスマスクの20分後の密着性やクレンジングシートの拭取り性は、実施例1のフェイスマスクの20分後の密着性やクレンジングシートの拭取り性に比べ優れていた。これは、スキンケア製品用不織布8の静摩擦係数、追従性、保液性および圧縮時の柔らかさが、実施例1のフェイスマスクやクレンジングシートに用いたスキンケア製品用不織布1の静摩擦係数、追従性、保液性および圧縮時の柔らかさよりも優れていたためであると推測する。
さらに、実施例8のフェイスマスクの圧縮時の柔らかさは、実施例10のフェイスマスクの圧縮時の柔らかさに比べ優れていた。これは、スキンケア製品用不織布8が乾式不織布であり、スキンケア製品用不織布10が湿式不織布であるためであると推測する。
また、実施例8のクレンジングシートの取扱性は、実施例12のクレンジングシートの取扱性に比べ優れていた。これは、スキンケア製品用不織布8が含有する熱可塑性樹脂ファイバーの含有量が、実施例12のクレンジングシートに用いたスキンケア製品用不織布12が含有する熱可塑性樹脂ファイバーの含有量と比べ低いためと推測する。
また、実施例8のフェイスマスクの追従性や圧縮時の柔らかさは、実施例16のフェイスマスクの追従性や圧縮時の柔らかさに比べ優れていた。これは、スキンケア製品用不織布8の密度が、実施例16のフェイスマスクに用いたスキンケア製品用不織布16の密度に比べ低かったためと推測する。
また、実施例18のフェイスマスクの追従性や圧縮時の柔らかさは、実施例16のフェイスマスクの追従性や圧縮時の柔らかさに比べ優れていた。これは、実施例18のフェイスマスクに用いたスキンケア製品用不織布18の密度が、実施例16のフェイスマスクに用いたスキンケア製品用不織布16の密度に比べ低かったためと推測する。
Claims (7)
- 単繊維直径が50nm以上800nm以下の熱可塑性樹脂ファイバーと、セルロース繊維と、を含むスキンケア製品用不織布であって、
前記セルロース繊維のJIS L 1015:2010 8.7.2に準じて測定される引張強度は1.9cN/dtex以下であり、
前記スキンケア製品用不織布の全質量に対する前記熱可塑性樹脂ファイバーと前記セルロース繊維との合計含有量が85質量%以上であり、
前記熱可塑性樹脂ファイバーと前記セルロース繊維との含有質量比(熱可塑性樹脂ファイバー/セルロース繊維)が、0.23~1.50であり、
前記スキンケア製品用不織布の密度が0.08~0.16g/cm3である、スキンケア製品用不織布。 - 前記熱可塑性樹脂ファイバーが、ポリアミド繊維である、請求項1に記載のスキンケア製品用不織布。
- 前記セルロース繊維が、レーヨンである、請求項1または2に記載のスキンケア製品用不織布。
- 前記セルロース繊維の繊維長が、35mm以上である、請求項1~3のいずれかに記載のスキンケア製品用不織布。
- 密度が0.08~0.14g/cm3である、請求項1~4のいずれかに記載のスキンケア製品用不織布。
- 請求項1~5のいずれかに記載のスキンケア製品用不織布を使用する、フェイスマスク。
- 請求項1~5のいずれかに記載のスキンケア製品用不織布を使用する、クレンジングシート。
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| EP19869314.5A EP3862475A4 (en) | 2018-10-02 | 2019-09-26 | NON-WOVEN FABRIC FOR SKIN CARE PRODUCTS, FACE MASK AND CLEANING SHEET |
| CN201980060187.5A CN112739863B (zh) | 2018-10-02 | 2019-09-26 | 皮肤护理产品用不织布、面膜和清洁片 |
| US17/280,530 US12171846B2 (en) | 2018-10-02 | 2019-09-26 | Nonwoven fabric for skin care products, face mask, and cleansing sheet |
| KR1020217008110A KR102753681B1 (ko) | 2018-10-02 | 2019-09-26 | 스킨케어 제품용 부직포, 페이스 마스크, 및 클렌징 시트 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022042197A (ja) * | 2020-09-02 | 2022-03-14 | 日本製紙パピリア株式会社 | シート状化粧品 |
| JP2023010384A (ja) * | 2021-07-09 | 2023-01-20 | 大和紡績株式会社 | 液体含浸皮膚被覆シート用不織布およびその製造方法、液体含浸皮膚被覆シート、ならびにフェイスマスク |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006045096A (ja) * | 2004-08-03 | 2006-02-16 | Kao Corp | シート状身体洗浄材 |
| JP2009097121A (ja) | 2007-10-18 | 2009-05-07 | Toray Ind Inc | シート型コスメ製品用不織布 |
| JP2012223396A (ja) * | 2011-04-20 | 2012-11-15 | Teijin Fibers Ltd | コスメテイック製品用不織布およびコスメテイック製品 |
| WO2012173116A1 (ja) | 2011-06-15 | 2012-12-20 | 東レ株式会社 | 複合繊維 |
| JP2013209337A (ja) * | 2012-03-30 | 2013-10-10 | Sanwa Seishi Kk | メイク落とし用不織布及びメイク落としシート |
| JP2013240432A (ja) * | 2012-05-18 | 2013-12-05 | Angfa Co Ltd | フェイスマスク |
| WO2018235859A1 (ja) * | 2017-06-21 | 2018-12-27 | 東レ株式会社 | スキンケア製品用不織布 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA949737A (en) | 1970-08-27 | 1974-06-25 | Madhu P. Godsay | Nonwovens having improved properties and method of making same |
| AU724588B2 (en) | 1997-04-09 | 2000-09-28 | Kao Corporation | Skin cleansing sheet |
| TW438579B (en) | 1999-04-02 | 2001-06-07 | Kao Corp | Base material for wiping sheet |
| US7569534B2 (en) | 2004-08-03 | 2009-08-04 | Kao Corporation | Sheet-like body cleaning material |
| US20070134481A1 (en) | 2005-12-07 | 2007-06-14 | L'oreal | Soluble patch |
| JP5284889B2 (ja) | 2009-06-24 | 2013-09-11 | 帝人株式会社 | 繊維製品 |
| MY172206A (en) | 2012-06-12 | 2019-11-15 | Chemiefaser Lenzing Ag | Liquid-retaining sheet and facial mask |
| WO2014045680A1 (ja) | 2012-09-20 | 2014-03-27 | 株式会社エバメール化粧品 | 清拭用化粧料シートおよびその製造方法 |
| TWM447138U (zh) | 2012-09-25 | 2013-02-21 | Tci Co Ltd | 含香蕉皮萃取物之面膜 |
| JP6285737B2 (ja) * | 2014-02-06 | 2018-02-28 | ダイワボウホールディングス株式会社 | ウェットシート用不織布、ウェットワイピングシート、および液体含浸皮膚被覆シート |
| MY181506A (en) | 2014-03-31 | 2020-12-24 | Daiwabo Holdings Co Ltd | Nonwoven fabric for skin covering sheet to be impregnated with cosmetic preparation, and process for producing same |
| CN106714641A (zh) * | 2014-09-30 | 2017-05-24 | 可乐丽可乐富丽世股份有限公司 | 擦拭片 |
-
2019
- 2019-09-26 JP JP2020550349A patent/JP7392651B2/ja active Active
- 2019-09-26 EP EP19869314.5A patent/EP3862475A4/en active Pending
- 2019-09-26 US US17/280,530 patent/US12171846B2/en active Active
- 2019-09-26 KR KR1020217008110A patent/KR102753681B1/ko active Active
- 2019-09-26 CN CN201980060187.5A patent/CN112739863B/zh active Active
- 2019-09-26 WO PCT/JP2019/037824 patent/WO2020071228A1/ja not_active Ceased
- 2019-10-01 TW TW108135479A patent/TW202026479A/zh unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006045096A (ja) * | 2004-08-03 | 2006-02-16 | Kao Corp | シート状身体洗浄材 |
| JP2009097121A (ja) | 2007-10-18 | 2009-05-07 | Toray Ind Inc | シート型コスメ製品用不織布 |
| JP2012223396A (ja) * | 2011-04-20 | 2012-11-15 | Teijin Fibers Ltd | コスメテイック製品用不織布およびコスメテイック製品 |
| WO2012173116A1 (ja) | 2011-06-15 | 2012-12-20 | 東レ株式会社 | 複合繊維 |
| JP2013209337A (ja) * | 2012-03-30 | 2013-10-10 | Sanwa Seishi Kk | メイク落とし用不織布及びメイク落としシート |
| JP2013240432A (ja) * | 2012-05-18 | 2013-12-05 | Angfa Co Ltd | フェイスマスク |
| WO2018235859A1 (ja) * | 2017-06-21 | 2018-12-27 | 東レ株式会社 | スキンケア製品用不織布 |
Non-Patent Citations (2)
| Title |
|---|
| See also references of EP3862475A4 |
| TATSUYA HONGU: "Textile encyclopedia ", 25 March 2002, ISBN: 4-621-04959-3, article "Passage; Textile encyclopedia", pages: 1009 - 1010, XP009526724 * |
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| JP2022042197A (ja) * | 2020-09-02 | 2022-03-14 | 日本製紙パピリア株式会社 | シート状化粧品 |
| JP2023010384A (ja) * | 2021-07-09 | 2023-01-20 | 大和紡績株式会社 | 液体含浸皮膚被覆シート用不織布およびその製造方法、液体含浸皮膚被覆シート、ならびにフェイスマスク |
| JP7560414B2 (ja) | 2021-07-09 | 2024-10-02 | 大和紡績株式会社 | 液体含浸皮膚被覆シート用不織布およびその製造方法、液体含浸皮膚被覆シート、ならびにフェイスマスク |
| JP2024169599A (ja) * | 2021-07-09 | 2024-12-05 | 大和紡績株式会社 | 液体含浸皮膚被覆シート用不織布およびその製造方法、液体含浸皮膚被覆シート、ならびにフェイスマスク |
| JP7826403B2 (ja) | 2021-07-09 | 2026-03-09 | 大和紡績株式会社 | 液体含浸皮膚被覆シート用不織布およびその製造方法、液体含浸皮膚被覆シート、ならびにフェイスマスク |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2020071228A1 (ja) | 2021-09-30 |
| US12171846B2 (en) | 2024-12-24 |
| CN112739863B (zh) | 2023-05-16 |
| TW202026479A (zh) | 2020-07-16 |
| JP7392651B2 (ja) | 2023-12-06 |
| KR20210066813A (ko) | 2021-06-07 |
| EP3862475A1 (en) | 2021-08-11 |
| EP3862475A4 (en) | 2022-07-06 |
| US20220040050A1 (en) | 2022-02-10 |
| KR102753681B1 (ko) | 2025-01-14 |
| CN112739863A (zh) | 2021-04-30 |
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