JP2000319123A - Sheet pack - Google Patents

Abstract

(57) [Summary] [Problem] For application to the face, etc., which can sufficiently prevent peeling without stickiness at the time of sticking and can sufficiently remove aged keratin without irritating feeling such as pain at the time of peeling. Providing suitable sheet packs. SOLUTION: This sheet-like pack comprises a base cloth and a pack agent layer spread on the base cloth, and has a 180-degree peel force of 5 gf / 25 mm to 500 gf / 25 mm and a shear adhesive force. sheet pack agent and satisfies the condition that it is ^{0.1N / cm 2 ~5N / cm 2} .

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet-like pack which is provided with a base cloth and a pack layer and is applied to a face or the like. More specifically, the present invention relates to a sheet-like pack which is sufficiently prevented from peeling without sticking when applied. The present invention also relates to a sheet-like pack capable of sufficiently removing aged keratin without causing a stimulating feeling such as pain at the time of peeling.

[0002]

2. Description of the Related Art In recent years, for the purpose of replenishing moisturizing components to the skin of the face and the like and removing aged keratin, sheet-like packs which are directly adhered to the face and the like have been developed (for example, see Japanese Patent Application Laid-Open No. H08-208).
-188527). Since such a sheet-like pack is to be attached to a relatively delicate part such as a face, prevention of irritation such as a burning sensation at the time of peeling has been conventionally emphasized, and the adhesive strength is as small as possible. Under the ordinary perception of those skilled in the art that it is better, the adhesive strength of the conventional sheet pack was very weak.

[0003] However, such conventional sheet packs are inconvenient in that they must be kept in a fixed position during use because they are easily peeled off during application, during which time nothing can be done. Also, the performance of removing aged keratin was not sufficient.

[0004] Unlike a patch or a plaster containing a drug, such a sheet pack is applied to a face or the like which has irregularities and is greatly expanded and contracted as compared with normal skin, so that the skin-shaped pack can be used for the irregularities and expansion and contraction of the skin. It is common to have a relatively complicated shape in which cuts or holes are provided at the ends or the center so that it is easy to fit, and in the case of such a complicated shape, the above problem is particularly remarkable. .

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and it has been found that peeling can be sufficiently prevented without sticking at the time of sticking and irritating feeling such as pain at the time of peeling. It is an object of the present invention to provide a sheet-like pack suitable for application to a face or the like, which can sufficiently remove aged keratin without causing the problem.

[0006]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to achieve the above object, and as a result, it has been found by those skilled in the art that it is better that the adhesive force of a sheet-like packing material should be as small as possible. It is difficult to realize the conflicting characteristics of reducing the irritating feeling at the time of peeling and the tightness at the time of sticking, and the difficulty of peeling at the time of sticking and the improvement of the performance of removing aged keratin. When the shear adhesive strength of the sheet-like pack agent itself constituted and integrated with the cataplasm layer satisfies a certain condition and the 180-degree peel force satisfies a certain condition, the peeling is sufficient without a sense of tightness at the time of application. It has been found that a sheet-like pack agent suitable for application to the face and the like, which can prevent aging and can sufficiently remove aged keratin without causing a stimulating feeling such as pain at the time of peeling, can be obtained.

That is, the sheet-form pack of the present invention comprises:
It has a base cloth and a pack agent layer (which may or may not contain a drug) spread on the base cloth, and includes the following conditions a) and b): a) 180-degree peeling The force is 5gf / 25mm-500gf /
B) the sheet-form pack is 25 mm wide × 80 mm long
25 mm × length 25 of the pack agent layer
mm part was stuck on a test plate specified in JIS Z 0237-1991 8.2.2, and the stuck part was press-bonded with a force of 5 kgf for 15 minutes. The test piece was pulled at a tensile speed of 300 ± 30 mm / min and stuck so that the force applied to the test piece was parallel to the center line of the test piece, with the center line of the grip of the tensile tester being on a straight line. When the portion is peeled off or the test piece is cut, the shear adhesive strength is 0.1 N / cm ^{2 to} 5 N /
cm ² ;

[0008] The sheet-shaped pack of the present invention further comprises a release paper adhered to the pack layer, and a cut portion comprising a cut portion and a connection portion alternately repeated is formed on the release paper. May be used. In this case, the ratio (a: b) of the total length (a) of the connection portion to the total length (b) of the cut portion is in the range of 1: 5 to 1:30, and the cut portion has a linear shape. , S-shape, corrugated shape and saw blade shape.

Note that the 180-degree peeling force referred to herein is a value measured according to the conditions described in the 12th Revised Japanese Pharmacopoeia. That is, the 180-degree peeling force according to the present invention refers to a width 25 mm and a length 250
JIS Z 0237-199mm
1 8.2.2 Test plate specified (thickness: 1.5 mm, width: 50 mm, length: 12
5mm SUS steel plate), align the test plate and one end of the test piece in the length direction, place the test piece at the center in the width direction of the test plate, and let the remaining 125mm part of the test piece play. deep. Next, a roller (crimping device) specified in JIS Z 0237-1991 8.2.3 is reciprocated once at a speed of 300 mm per minute from above the test piece to perform pressure bonding. Between 20 and 40 minutes after crimping, the play portion of the test piece was turned back at 180 degrees and peeled off by 25 mm.
7-1991 6.2 Hold the test piece on the upper grip and the test plate on the lower grip of the tensile tester specified in 6.2.
Peel off at a speed of ± 30 mm. And the length of the peeled part is 20mm (peeling rate 20%), 40mm (peeling rate 40%), 60mm (peeling rate 60%), 80mm (peeling rate 80%)
And the average value thereof is referred to as a 180-degree peeling force (gf / 25 mm).

[0010] The shear adhesive strength referred to herein is JIS.
Referenced in Z 0237-19913. Refers to the value measured under the following conditions according to the "shear adhesion test" described as That is, the shear adhesive strength according to the present invention is a width of 25 mm and a length of 80 m after 7 days or more from production.
JIS Z 0237-1991
8.2.2 Test plate specified (thickness 1.5 mm, width 50 mm, length 150
mm SUS steel plate) with an area of 25m
m (width W) x 25 mm (length L), and the bonded part was pressed with a force of 5 kgf for 15 minutes. Immediately after the bonding, a tensile tester specified in JIS Z 0237-1991 6.2 was used. The center line of the test piece and the center line of the grip of the tensile tester are aligned with each other, and the force applied to the test piece is applied in parallel with the center line of the test piece.
mm, the force per unit area when the bonded portion was peeled off or the test piece was cut [N
/ {Width W (cm) × length L (cm)} = N / 6.25
(Cm ² )].

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in more detail.

FIG. 1 is a schematic cross-sectional view showing a preferred embodiment of a sheet-shaped pack of the present invention.
Is formed by laminating a pack agent layer 3 on the surface of a flexible base cloth 2, and a release paper 4 to be peeled off when used is further adhered. And the sheet-form pack agent 1 of the present invention
The aforementioned 180 degree peeling force is 5 gf / 25 mm to 500 gf
/ 25 mm and the aforementioned shear adhesive strength is 0.1 N / cm
^{2 to 5} N / cm ² . 180 degree peeling force is 5gf
/ 25mm~500gf / by 25mm and is and shear adhesive strength is ^{0.1N / cm 2 ~5N / cm 2} , peeling difficulty during sticking and reduce the irritation and sticking during tightness at the peeling and Normally mutually contradictory properties of improving the performance of removing aged keratin are compatible.

That is, if the above two conditions are satisfied at the same time, sufficient adhesion to the force applied in the parallel direction to the sheet-shaped pack agent can be obtained even when applied to the skin of a face or the like that is highly uneven and highly elastic. Since the force is exerted, the sheet-form pack agent is sufficiently held in an upright posture without peeling even against skin movements such as the eyes and the mouth. In addition, by simultaneously satisfying the above two conditions,
The aged keratin can be effectively and sufficiently affixed without stickiness while applying the sheet-shaped pack to the skin such as the face, and without irritations such as burning and pain when peeling off. Removed. As described above, the sheet-shaped pack of the present invention can be used as a normal life, such as reading a magazine in a normal posture, watching TV, or walking while standing, while affixing to the skin such as the face. The keratin that has aged can be sufficiently removed without falling off even if it is put away, and without accompanied by a feeling of tension at the time of use or pain at the time of peeling.

The 180-degree peeling force of the sheet-form pack of the present invention itself is 5 to 500 gf / 25 mm, preferably 10 to 300 gf / 25 mm, and more preferably 15 to 100 gf / 25 mm as described above. If the 180-degree peeling force of the sheet-like pack agent is less than 5 gf / 25 mm, the keratin aged at the time of peeling will not be sufficiently removed, and it will easily peel off at the time of use. On the other hand, if the 180-degree peeling force of the sheet-form pack exceeds 500 gf / 25 mm, the sheet-form pack is peeled off with a irritating sensation such as burning and pain, which impairs a good feeling of use.

As described above, the sheet adhesive of the present invention has a shear adhesive strength of 0.1 N / cm ^{2 to} 5 N / c.
m ² , preferably 0.2 N / cm ^{2 to} 4 N / cm ²
And more preferably 0.3 N / cm ^{2 to} 3 N / c.
m ² . The shear adhesive strength of the sheet pack is 0.1
If it is less than N / cm ² , the adhesiveness to the movement of the affixed part (skin such as the face) will be poor, and it will be easy to peel off even a little movement. And she has to take a back posture at all times. On the other hand, when the shear adhesive strength of the sheet-like pack agent exceeds 5 N / cm ² , a slight feeling of a slight movement of the skin such as a face is generated during sticking, and a good feeling of use is impaired.

The base cloth used for the sheet-like pack of the present invention has a 180 ° peeling force of 5 gf / 25 mm to 500 gf / 25 mm and a shear adhesive strength of 0.1 N / cm ² to 0.1 g when the sheet-like pack is formed. A film or sheet made of a synthetic resin such as polyethylene, polypropylene, ethylene-vinyl acetate copolymer, vinyl chloride, polyurethane, polyester, polyamide, rayon, polyurethane, etc., as long as it is 5 N / cm ² ; Stretchable cloth, stretchable nonwoven fabric (polyester fiber nonwoven fabric, absorbent cotton, etc.) or stretchable knitted fabric made of the synthetic resin fiber or natural fiber, nonwoven paper, cellophane, or a laminate of these is preferably used.

Particularly, as such a base cloth, a stretchable nonwoven fabric or a stretchable fabric made of a synthetic resin such as polyester fiber is preferable, and a nonwoven fabric of polyester fiber is more preferable. In this case, the basis weight is preferably 30 to 120 g.
/ M ^2, more preferably 35~100g / m ^2, particularly preferably 40~90g / m ^2, is used as the. Further, the thickness of the yarn constituting the base cloth is preferably 0.1 to 2 denier. If such a nonwoven fabric of polyester fiber is used, the 180-degree peeling force and the shearing adhesive force of the sheet-like pack agent tend to be easily set within the above-mentioned set ranges of the present invention. The thickness of the base fabric according to the present invention is 0.3 to 0.3 when the base fabric is a woven fabric, a knitted fabric, or a nonwoven fabric.
3mm is preferable, and 1mm when using polyester non-woven fabric
± 0.5 mm is preferred.

Although the color of the base fabric according to the present invention is not particularly limited, it greatly affects the image of the sheet-shaped pack agent and leads to a feeling of use and a feeling of activation of the skin.
Preferred are white, flesh color, yellow, red, orange, green, blue, pink, light blue and the like.

The pack (paste) layer used in the sheet pack of the present invention has a 180 ° peeling force of 5 gf / 25 mm to 500 gf / 2 when the sheet pack is formed.
5 mm and shear adhesive strength of 0.1 N / cm ^{2 to} 5 N / c
as long as it becomes m ^2, is not particularly limited, preferably the water-soluble polymer, a polyhydric alcohol, humectant, crosslinking agent, and water are blended, also skin-beautifying components as required,
Preservatives, antioxidants, tackifiers, solubilizers, dyes, fragrances, surfactants, ultraviolet absorbers, inorganic fillers, pH adjusters, and the like may be added.

The water-soluble polymer used in the pack layer according to the present invention includes gelatin, polyacrylic acid, polyacrylate, polyvinyl alcohol, polyvinylpyrrolidone, polyethylene oxide, sodium carboxymethylcellulose, hydroxypropylcellulose, and hydroxyethylcellulose. , Hydroxymethylcellulose, sodium alginate, xanthan gum, tragacanth gum, karaya gum, maleic anhydride copolymer and the like, each of which can be used alone or in combination. The polyacrylate is preferably a metal salt of polyacrylic acid such as sodium, lithium and potassium,
Those having an average degree of polymerization of 20,000 to 70,000 are preferably used. As the average degree of polymerization becomes smaller than 20,000, the thickening effect tends to be poor and sufficient gel strength tends not to be obtained.
As the size becomes larger, the thickening effect tends to be too strong and the workability tends to decrease.

The content of such a water-soluble polymer is preferably 3 to 25% by weight, more preferably 5 to 23% by weight, and still more preferably 5 to 20% by weight in the pack agent layer. As the blending amount becomes lower than 5% by weight, an increase in the adhesiveness of the pack agent layer, a decrease in cohesiveness, and a decrease in shape retention are observed, and as a result, the feeling of use tends to be reduced, and 3% by weight. Below, it tends to be significant. On the other hand, as the blending amount becomes higher than 20% by weight, a decrease in tackiness, an increase in cohesiveness, and a decrease in shape retention of the pack agent layer are observed, and as a result, the feeling of use tends to decrease, and If the content exceeds% by weight, it tends to be remarkable.

As the polyhydric alcohol used in the pack agent layer according to the present invention, glycols are preferable, and as a dispersing / dissolving agent or a plasticizer such as a water-soluble polymer, a moisturizing component, a cross-linking agent, a beautiful skin component, and a preservative. As well as being used, water release and volatilization can be promoted. The glycols here have a polyether structure, and have a relatively small number of hydroxyl groups as compared with generally used low molecular weight polyhydric alcohols, and thus tend to have poor hydrophilicity. Therefore, by utilizing this property, the critical relative humidity of the base component excluding water can be reduced, and more water can be released to the outside during use. As a result, it moisturizes the skin, and volatilizes water to the outside to take away heat of vaporization, thereby suppressing hot flashes and inflammation of the face and at the same time giving a pleasant refreshing feeling. In addition, the temperature dependence of viscosity is relatively small compared to commonly used low molecular weight polyhydric alcohols, and when incorporated into a pack agent layer, it exhibits stable shape retention that is not affected by environmental changes. Can be. As described above, glycols having a polyether structure have an average molecular weight of 200 to 200.
Polyethylene glycol of 600 and average molecular weight of 500
Polypropylene glycol of 3,000 to 3,000 is preferable, and one or more of these can be used in combination.

The compounding amount of such a polyhydric alcohol is preferably 1 to 35% by weight, more preferably 5 to 25% by weight, and still more preferably 5 to 20% by weight in the pack agent layer. As the amount is less than 5% by weight, the evaporation of water in the pack agent layer increases, and the pack agent layer becomes hard during application and the feeling of use tends to decrease. Tend to be. On the other hand, as the blending amount becomes higher than 20% by weight, the workability and the feeling of use during and after use tend to decrease, and 35% by weight.
When it exceeds, it tends to be remarkable.

As the moisturizing component used in the pack layer according to the present invention, glycerin, propylene glycol, terbilia extract, herbal extract, acylated kefiran aqueous solution (manufactured by Sanshou Pharmaceutical Co., Ltd.), malt extract and the like are preferably used. One or two or more of these can be used in combination. The acylated kefiran aqueous solution is obtained by culturing kefiran extracted and purified from kefir or grain or kefiran produced by culturing a kefiran-producing bacterium by at least partial acylation with an acid anhydride or a carboxylic acid or a halide thereof. Kefiran, acetyl kefiran, maleile kefiran and the like can be used. The acylated kefiran aqueous solution has various pharmacological effects and imparts a function as a moisturizing component derived from nature. Further, as the malt extract, malt extract or malt root extract obtained by squeezing barley malt or extracting with ethanol is suitably used, particularly malt root extract is a factor for promoting the collagen-producing ability of fibroblasts. It is preferable from the viewpoint of anti-aging effect on the skin.

The amount of such a moisturizing component is preferably 0.01 to 20% by weight, more preferably 0.05 to 10% by weight, and still more preferably 0.1 to 5% by weight in the pack agent layer. is there. As the amount is less than 0.1% by weight, the water retention and shape retention of the pack agent layer are reduced, and the feeling of use during and after use tends to be reduced. Below, it tends to be significant. On the other hand, as the blending amount becomes higher than 5% by weight, the adhesiveness, cohesiveness, and shape retention of the pack agent layer decrease, the gel becomes non-uniform, the workability decreases, and the feeling during use and after use decreases. The tendency to invite is recognized, and when it exceeds 20% by weight, it tends to be remarkable.

As the crosslinking agent used in the pack agent layer according to the present invention, a sparingly water-soluble aluminum compound or a polyfunctional epoxy compound can be used alone or as a compounding agent containing these compounds. Examples of the water-insoluble aluminum compound include aluminum hydroxide, hydrated aluminum silicate, synthetic aluminum silicate, kaolin, aluminum acetate, aluminum lactate, aluminum stearate, and the like, and one or more of these may be used in combination. be able to. By using such a poorly water-soluble aluminum compound, in addition to the effect of reducing skin irritation by antacid action and the effect of skin astringent action by a small amount of aluminum ions, the gel is given an initial strength as a filler at the beginning, It is possible to exhibit a function of compensating for a decrease in gel strength due to aging degradation and aging cutting of a covalent cross-linking section between polymers. Furthermore, it is also possible to control the elution rate of aluminum by adjusting the pH.

Examples of the polyfunctional epoxy compound include polyethylene glycol diglycidyl ether, ethylene glycol diglycidyl ether, glycerin diglycidyl ether, glycerin triglycidyl ether, propylene glycol diglycidyl ether, polyglycerol polyglycidyl ether and sorbitol polyglycidyl ether. , Sorbitan polyglycidyl ether,
Examples include trimethylolpropane polyglycidyl ether, pentaerythritol polyglycidyl ether, resorcinol diglycidyl ether, neopentyl glycol diglycidyl ether, and one or more of these polyfunctional epoxy compounds can be used in combination. By using such a polyfunctional epoxy compound, it is possible to obtain excellent water absorbing ability and shape retention, and to efficiently generate a covalent bond with a water-soluble polymer having a carboxy group, an amino group, a hydroxyl group, and the like, It is possible to increase the gel strength.

Further, when a sparingly water-soluble aluminum compound and a polyfunctional epoxy compound are blended and used, the blending ratio (weight ratio) of the sparingly water-soluble aluminum compound (a) and the polyfunctional epoxy compound (b) in the blending agent is used. Is a / b = 500 /
1 to 1/10 is preferred. By using such a compounding agent, there is a tendency that the water retention when not in use, the shape retention, and the stability over time of excellent formulation physical properties are improved.

The amount of such a crosslinking agent is preferably 0.01 to 20% by weight, more preferably 0.5 to 15% by weight, still more preferably 1 to 10% by weight in the pack agent layer. When the amount is less than 1% by weight, the stability of the physical properties of the pack agent layer tends to decrease, and the feeling of use tends to decrease. When the amount is less than 0.01% by weight, the tendency tends to be remarkable. On the other hand, when the blending amount is higher than 10% by weight, there is a tendency that the workability is reduced due to an excessive increase in viscosity during the production, and the pack agent layer tends to be non-uniform due to gelation, and exceeds 20% by weight. And it tends to be noticeable.

As the water used in the pack agent layer according to the present invention, purified water, sterilized water, natural water and the like can be used. Such water acts as a dispersing / dissolving agent such as a water-soluble polymer, a moisturizing component, a cross-linking agent, a beautiful skin component, a preservative, and the like, and significantly improves the feeling of use during and after use. Therefore, the amount of water is preferably 40 to 95% by weight, more preferably 60 to 90% by weight, and still more preferably 70 to 85% by weight in the pack agent layer. By including a relatively large amount of water in the pack agent layer in this way, the relative humidity of itself can be increased, and the difference from the critical humidity can be increased, so that more water is used during use. It is possible to efficiently discharge to the outside,
As a result, the skin is moisturized, and the evaporation of water to the outside removes the heat of vaporization, thereby suppressing the burning and inflammation of the skin and at the same time providing a pleasant refreshing feeling. As the blending amount of water becomes lower than 70% by weight, the adhesiveness of the pack agent layer, the water retention before use, the workability, the usability during use and after use tend to be reduced. When it is less than 40% by weight, it tends to be remarkable. On the other hand, as the blending amount is higher than 85% by weight, the tackiness and cohesiveness are liable to be inhibited, and the shape retention before use tends to decrease, and when it exceeds 95% by weight, the tendency tends to be remarkable.

[0031] The beautiful skin components usable in the pack layer according to the present invention include lecithin, amino acids, kojic acid, proteins, sugars, hormones, placenta extract, various crude drugs (aloe, loofah, licorice, etc.). Extractable component; one or two of water-soluble placenta extract and allantoin
More than one compound; Vitamin A, Vitamin C, Vitamin E
And other vitamins; diphenhydramine hydrochloride, diphenhydramine salicylate, diphenhydramine tannate, triprolidine hydrochloride, mequitazine, chlorpheniramine maleate, d-chlorpheniramine maleate, clemastine fumarate, promethazine hydrochloride, tranilast, sodium cromoglycate, ketotifen , allyl sul Fe synthetase B, Bufexamac, bendazac, butyl flufenamic acid, ibuprofen, indomethacin, aspirin, flurbiprofen, ketoprofen, piroxicam and 2-pyridine methyl mefenamic acid, 5,6-methano-LTA _4, esculetin , Eubatirin, 4-demethyleuvaciline, caffeic acid, benoxaprofen, fruit extract, fruit juice, etc. In or formulation to be used. The water-soluble placenta extract is an extract extracted after blood is removed from the placenta of a healthy cow or pig, and has a whitening effect, cell activation effect, blood circulation promotion, metabolism enhancement, melanin suppression effect, cell proliferation effect, etc. is there. In addition, allantoin has an action of removing necrotic tissue and scale, and at the same time, promotes the generation of new skin tissue, and has actions such as cell proliferation, anti-allergy, anti-inflammatory and anti-stimulation. The amount of such a beautiful skin component is preferably 0.01 to 20% by weight, more preferably 0.0 to 20% by weight in the pack agent layer.
It is 5 to 10% by weight, more preferably 0.1 to 5% by weight. When the amount is less than 0.1% by weight, the beautiful skin effect tends to decrease, and the feeling of use at the time of use and after use tends to decrease. When the amount is less than 0.01% by weight, the effect tends to be remarkable. . On the other hand, as the blending amount becomes higher than 5% by weight, the adhesiveness and cohesiveness of the pack agent layer, the decrease in water retention and shape retention before use, the unevenness of the gel, the decrease in workability, during and after use Tends to cause a decrease in the feeling of use, and if it exceeds 20% by weight, this tends to be significant.

The preservatives usable in the pack layer according to the present invention include paraoxybenzoate, benzoic acid, benzoate, salicylate, sorbic acid, sorbate, dehydroacetate, and 4-isopropyl-3. -Methylphenol, 2-isopropylpropyl-5-methylphenol, phenol, hinokitiol, cresol, 2,
4,4'-trichloro-2'-hydroxydiphenyl ether, 3,4,4'-trichlorocarbanide, chlorobutanol, benzalkonium chloride, benzethonium chloride and the like. One or more of these may be blended. Can be used. The content of such a preservative is preferably 0.005 to 10% by weight, more preferably 0.01 to 5% by weight, and still more preferably 0.01 to 1% by weight in the pack agent layer. 0.01% by weight
As it becomes lower, it tends to cause decay of the pack agent layer due to generation of mold and fungi during storage, and 0.00
If it is less than 5% by weight, it tends to be remarkable. On the other hand,
When the amount is more than 1% by weight, preservative odor tends to be easily generated, and when it exceeds 10% by weight, it tends to be remarkable.

The highly water-containing pack agent layer according to the present invention comprises:
In addition to the above water-soluble polymers, polyhydric alcohols, moisturizing components, cross-linking agents, water, beautiful skin components, preservatives, antioxidants, tackifiers, solubilizers, dyes, fragrances, surfactants, and ultraviolet absorbers A compounding agent such as an inorganic filler and a pH adjuster may be appropriately compounded according to the intended use.

As such an antioxidant, ascorbic acid, propyl gallate, butylhydroxyathonyl, dibutylhydroxytoluene, nordihydroguaiaretinic acid, tocopherol, tocopherol acetate and the like can be blended.

Examples of the tackifier include casein, pullulan, agar, dextran, sodium alginate, soluble starch, carboxystarch, dextrin, carboxymethylcellulose, sodium carboxymethylcellulose, methylcellulose, ethylcellulose, hydroxyethylcellulose, polyvinyl alcohol, polyethylene oxide, Polyacrylamide, polyacrylic acid, polyvinylpyrrolidone, carboxyvinyl polymer, polyvinyl ether, polymaleic acid copolymer,
Methoxyethylene maleic anhydride copolymer, isobutylene maleic anhydride copolymer, polyethyleneimine and the like can be blended.

Further, benzyl alcohol, peppermint oil, isopropyl myristate, crotamiton and the like can be blended as solubilizers.

The pigments include Red No. 2 (Amaranth), Red No. 3 (Erythrosin), Red No. 102 (New Coccin), Red No. 104 (1) (Phloxin B), and Red No. 105 (1). ) (Rose Bengal), Red No. 106 (Acid Red), Yellow No. 4 (Tartrazine), Yellow No. 5 (Sunset Yellow FCF), Green No. 3
(Fast green FCF), blue No. 1 (brilliant blue FCF), blue No. 2 (indicocarmine) and the like. In addition, although there is no particular limitation on the coloring matter and the fragrance, each of them is important in that it greatly affects the image of the preparation and leads to improvement in the feeling of use and the feeling of activation of the skin.

Further, as a surfactant, sodium dioctylsulfosuccinate, alkyl sulfate salt,
-Ethylhexyl alkyl sulfate sodium salt,
Anionic surfactants such as sodium normal dodecylbenzenesulfonate; cationic surfactants such as hexadecyltrimethylammonium chloride, polyoxyethylene dodecylmonomethylammonium chloride, octadecyldimethylbenzylammonium chloride; polyoxyethylene stearyl ether, polyoxyethylene Tridecyl ether, polyoxyethylene nonyl phenyl ether, polyoxyethylene octyl phenyl ether, polyoxyethylene monostearate, sorbitan monostearate, sorbitan monopalmate, sorbitan sesquioleate, polyoxyethylene sorbitan monolaurate, polyoxy Ethylene sorbitan monooleate, glycerol monostearate,
A nonionic surfactant such as polyglycerin fatty acid ester and polyoxyethylene octadecylamine may be blended.

Examples of the ultraviolet absorber include para-aminobenzoic acid, para-aminobenzoic acid esters, amyl para-dimethyl benzoate, salicylic acid esters, methyl anthranilate, umbelliferone, esculin, benzyl cinnamate, dinoxate, guaiazulene, and urocanine. Acid, 2- (2-hydroxy-5-methylphenyl) benzotriazole, 4-methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone, dioxybenzone, octabenzone, dihydroxydimethoxybenzophenone, slisobenzone, benzoresorcinol, octyldimethyl paraaminobenzoate And ethylhexyl paramethoxycinnamate.

Further, as the inorganic filler, titanium oxide,
Talc, zinc oxide, hydrous silica, magnesium carbonate, calcium hydrogen phosphate, magnesium silicate, silicic anhydride, bentonite and the like may be blended.

As the pH adjusting agent, acetic acid, formic acid,
Lactic acid, tartaric acid, oxalic acid, benzoic acid, glycolic acid, malic acid, citric acid, hydrochloric acid, nitric acid, sulfuric acid, sodium hydroxide, potassium hydroxide, methylamine, ethylamine, propylamine, dimethylamine, diethylamine, dipropylamine, Trimethylamine, triethylamine,
Tripropylamine, monomethanolamine, monoethanolamine, monopropanolamine, dimethanolamine, diethanolamine, dipropanolamine,
Trimethanolamine, triethanolamine, tripropanolamine and the like may be blended.

The thickness (coating thickness) of the pack agent layer laminated on the base cloth in the sheet-like pack agent of the present invention is 0.1 mm
３3 mm is preferred. When the thickness of the pack agent layer is more than 3 mm, the sheet-like pack agent tends to be stiff and the usability tends to be poor. On the other hand, when the thickness is less than 0.1 mm, the sheet-like pack agent tends to be loose and difficult to stick. is there.

In the sheet pack of the present invention, a release paper (release film) may be further laminated on the surface of the pack layer. Such release paper is not particularly limited, and unstretched polypropylene (CPP), stretched polypropylene (OPP), polyethylene terephthalate (PE)
T), polyethylene, polyvinyl chloride, polyester,
Polyvinylidene chloride, a film or sheet made of a synthetic resin such as polystyrene, or silica-coated paper, aluminum foil, laminated paper obtained by laminating polyethylene or the like on kraft paper, etc., and those subjected to a release treatment are preferably used. You.

Since the sheet-shaped pack of the present invention is applied to a face or the like which has irregularities and is greatly expanded and contracted as compared with normal skin, it is easy to fit to the irregularities and expansion and contraction of the skin at the edges and the center. There is a case where a cut or a hole (opening) is provided in the hole. As described above, since the shape of the sheet pack of the present invention can be more complicated than that of a normal patch or plaster containing a drug, the release paper is unstretched to maintain the shape of the sheet pack. Is preferred, and polyethylene terephthalate is preferred from the viewpoint of touch and luxury. Further, the release paper may be embossed.

The thickness of the release paper according to the present invention is preferably 20 μm to 150 μm, more preferably 30 μm to 12 μm.
0 μm, more preferably 40 μm to 100 μm. If the thickness of the release paper is less than 20 μm, the release paper will be too thin to maintain the shape of the sheet-like pack, and the release paper will be wrinkled when peeled, and the release paper will be thin and slippery, so pick In addition, there is a tendency that the release paper is easily cut off during production and the workability is reduced. On the other hand, when the thickness of the release paper exceeds 150 μm, it becomes difficult to cut off the release paper, and it becomes difficult to cut the raw sheet at the time of manufacturing, and the working efficiency tends to decrease.

In the sheet pack of the present invention, a release line can be provided on the release paper so that the release paper can be attached to the face or the like and can be easily separated from the pack agent layer. As shown in FIGS. 2 (a) to 2 (d), a cutting portion 5 including a cut portion 51 and a connecting portion 52 which are alternately repeated.
Is preferably provided in place of part or all of the score line. By providing the cut portion on the release paper in this manner, the sheet-shaped pack agent tends to be more reliably maintained in a constant form until use.

The cut portion 5 formed on the release paper is composed of a cut portion 51 and a connecting portion 52 each having a predetermined length. For example, as shown in FIG. 2 (b), or on the periphery of the release paper as shown in FIG. 2 (c). Further, as shown in FIGS. 2A to 2C, one cutting section 5 may be provided in the longitudinal direction or the lateral direction of the release paper.
As shown in (d), a plurality of release papers may be provided. Further, although the shape of the cut portion 5 is not particularly limited, FIG.
(B), a corrugated shape (S shape) as shown in FIG. 2 (c), or a sawtooth shape as shown in FIG. 2 (d). Can be done smoothly,
Convenience during peeling work tends to be improved. Here, the vertical direction of the release paper referred to here is the same direction as the nose line when the sheet-shaped pack is attached to the face as shown in FIG.
The middle direction is indicated by “L”), and the horizontal direction is a direction perpendicular to the nasal muscle when the sheet-shaped pack is applied to the face as shown in FIG. 3 (shown by “H” in FIG. 3). Means

By providing the cut portion in the release paper in this manner, the release paper can be easily and hygienically peeled off, and the occurrence of wrinkles and twists tends to be sufficiently prevented when affixing. . Further, in the case of a stretchable sheet-like pack, the cut portion tends to be easily cut by stretching the pack in the left, right, up and down directions. That is, since the sheet-shaped pack agent has a relatively complicated shape, it is difficult to peel off the release paper and affix it to the skin such as the face if there is no cut portion as described above. There was also a problem in terms of hygiene, because the wrapping was likely to occur and the pack agent layer had to be directly touched. On the other hand, when the cut portion is provided in the release paper as described above, the sheet-shaped pack agent is more reliably maintained in a certain form until use, and the release paper is easily peeled off, and when the sheet is attached. Since the generation of wrinkles and twists is sufficiently prevented, it is not necessary to directly touch the pack agent layer.

In the cutting section 5 formed on the release paper,
The ratio (a: b) of the total length (a) of the connecting portion 52 to the total length (b) of the cut portion 51 is preferably in the range of 1: 5 to 1:30, and 1:12 to 1: 1. It is more preferably in the range of 25, and even more preferably in the range of 1:15 to 1:25. The total length (b) of the cut portion 51 is the connecting portion 52
When the length is less than 5 times the total length (a) of the paper, it becomes difficult to divide the paper. On the other hand, when the total length (b) of the cut portion 51 exceeds 30 times the total length (a) of the connecting portion 52,
Even when not in use, it tends to break apart, and it tends to be difficult to maintain the shape of the pack.

The tensile strength of the release paper is preferably 10 g / cm to 140 g / cm, more preferably 20 g / cm.
/ Cm to 100 g / cm, more preferably 30 g / cm
６０60 g / cm. As the tensile strength of the release paper having a cut portion is less than 30 g / cm, the release paper tends to be cut off during the production and the working efficiency tends to be reduced. On the other hand, as the tensile strength becomes greater than 60 g / cm. When used, it is difficult to easily separate the release paper, and the convenience tends to be reduced. The tensile strength referred to here was measured using a tensile tester (manufactured by Shimadzu Corporation; AGS-100B) where the cut portion of the release paper was formed. 100mm
The load at the time of breaking when pulled at a rate of / min was defined as the tensile strength.

[0051]

EXAMPLES Hereinafter, the content of the present invention will be described in more detail with reference to Examples and Comparative Examples, but the sheet-like pack of the present invention is not limited to these Examples.

Example 1 Purified water (62.49% by weight)
In the resulting dispersion, sodium polyacrylate (average degree of polymerization: 50,000, 5% by weight), gelatin (0.5% by weight), glycerin (15% by weight) were dispersed. ), Ethylene glycol diglycidyl ether (0.05% by weight) and polyethylene glycol (12% by weight) were added and stirred until uniform to obtain a pack. Next, a light-blue dyed polyester nonwoven fabric (basis weight: 80 g / m ² , yarn thickness: 0.5
(Denier, thickness: 1 mm).
The pack was spread to a thickness of 4 mm to prepare a sheet-like pack.

18 days after 7 days of the obtained sheet pack
When the 0-degree peel force and the shear adhesive force were measured,
The 0-degree peel force is 32 gf / 25 mm, and the shear adhesive force is 0.
It was 6 N / cm ² .

Example 2 Purified water (62.9% by weight)
Sodium polyacrylate (average degree of polymerization: 70000,
10% by weight), gelatin (1% by weight), glycerin (1%
5% by weight), ethylene glycol diglycidyl ether
(0.1% by weight), polyethylene glycol (1% by weight)
%) And kaolin (10% by weight) until uniform
The mixture was stirred to obtain a pack. Next, light blue dyed poly
Ester non-woven fabric (basis weight: 120 g / m ^Two, Thread thickness:
0.5 denier, thickness: 1mm)
Spread the pack to a thickness of about 1.4 mm, and
A packing agent was prepared.

After 7 days, 18
When the 0-degree peel force and the shear adhesive force were measured,
The 0-degree peel force was 470 gf / 25 mm, and the shear adhesive strength was 9.4 N / cm ² .

Example 3 A synthetic aluminum silicate (0.5% by weight) was dispersed in purified water (65.4% by weight).
Sodium polyacrylate (average degree of polymerization: 20,000, 4% by weight), gelatin (4% by weight),
Glycerin (5% by weight), ethylene glycol diglycidyl ether (1% by weight), polyethylene glycol (20% by weight), and kaolin (0.1% by weight) were added and stirred until uniform to obtain a pack. Next, a pack agent was added to a base fabric made of a light-blue dyed polyester nonwoven fabric (basis weight: 30 g / m ² , thread thickness: 0.5 denier, thickness: 1 mm) so as to have a thickness of about 1.4 mm. The sheet was spread to prepare a sheet pack.

18 days after 7 days of the obtained sheet pack
When the 0-degree peel force and the shear adhesive force were measured,
The 0-degree peel force was 6.5 gf / 25 mm, and the shear adhesive force was 0.1 N / cm ² .

Comparative Example 1 Synthetic aluminum silicate (1% by weight) was dispersed in purified water (45.8% by weight), and sodium polyacrylate (average degree of polymerization:
80000, 12% by weight), gelatin (1% by weight), glycerin (20% by weight), ethylene glycol diglycidyl ether (0.2% by weight), polyethylene glycol (10% by weight), kaolin (10% by weight) Then, the mixture was stirred until it became uniform to obtain a pack. Next, a light-blue dyed polyester nonwoven fabric (basis weight: 130 g / m ² ,
A pack agent is spread on a base cloth made of a yarn having a thickness of 0.5 denier and a thickness of 1 mm so as to have a thickness of about 1.4 mm.
A sheet pack was prepared.

18 days after 7 days of the obtained sheet pack
When the 0-degree peel force and the shear adhesive force were measured,
The 0-degree peel force was 520 gf / 25 mm, and the shear adhesive strength was 5.5 N / cm ² .

(Comparative Example 2) Purified water (55.99% by weight)
To sodium polyacrylate (average degree of polymerization: 1500
0, 1% by weight), gelatin (1% by weight), glycerin
(25% by weight), ethylene glycol diglycidyl ester
Ter (0.01% by weight), polyethylene glycol (1
5% by weight) and kaolin (1% by weight)
The mixture was stirred until a pack was obtained. Then stained pale blue
Polyester non-woven fabric (basis weight: 20g / m ^Two, Thread thickness:
0.5 denier, thickness: 1mm)
Spread the pack to a thickness of about 1.4 mm and make a sheet
A pack was prepared.

18 days after 7 days of the obtained sheet pack
When the 0-degree peel force and the shear adhesive force were measured,
The 0-degree peel force was 4.5 gf / 25 mm, and the shear adhesive strength was 0.05 N / cm ² .

(Usability test) A release paper (material: polyethylene terephthalate, thickness: 50 μm) was applied to each of the sheet packs obtained in Examples 1 to 3 and Comparative Examples 1 and 2 above.
m) and then cut according to the shape of the face as shown in FIG. 2 (a), providing an opening at the part where the eyes and mouth hit, and providing a cut at the part where the nose and jaw hit. Thus, a face sheet pack was obtained.

Then, the face sheet pack obtained for each example was used for 20 women each (pasted on the face).
Have them have a feeling of use (comprehensive evaluation of the feeling of tension when sticking, the feeling of irritation such as pain when peeling, and the occurrence of peeling)
Was evaluated according to the following criteria. Table 1 shows the obtained results.

[Evaluation Criteria] ：: No stickiness at the time of sticking, no irritation such as pain at the time of peeling, and no peeling during use. ○: Tightness at the time of sticking. Or, when there is a feeling of irritation such as pain at the time of peeling, ×: when there is a feeling of tension at the time of sticking and there is a feeling of irritation such as pain at the time of peeling, or when peeling occurs during use.

[0065]

[Table 1]

(Aging Test for Removal of Aging Skin) The facial sheet-like packing agent after peeling off from the face during the above-mentioned feeling test (the sheets obtained in Examples 1 to 3 and Comparative Examples 1 and 2) The surface of the pack layer of each of the three packs is scanned by a scanning electron microscope (Akashi Beam Technology, W.
Observation by S-250) revealed that the sheet-like packs obtained in Examples 1 to 3 and Comparative Example 1 had keratin adhered to the surface of the pack layer, but the sheet-like packs obtained in Comparative Example 2 No keratin was adhered to the surface of the pack layer of the pack.

(Tearability test of release paper) The release paper of the sheet-shaped pack agent obtained in Example 1 was placed at the center in the vertical direction as shown in FIG. Ratio (a: b) of the length of the cut to the total length (b) is 1: 4 (Example 4),
A cut portion on a straight line of 1:12 (Example 5) and 1:25 (Example 6) was provided, and the functionality when the release paper was pulled and torn was evaluated according to the following criteria. Table 2 shows the obtained results.

[Evaluation Criteria] ：: When tearing feeling was very good, ：: Although tearing was felt in the middle, tearing was possible along the cut part, ×: From the middle of the cut part If you couldn't tear it.

[0069]

[Table 2]

As is clear from the results shown in Table 1, 1
80 degree peeling force is 5gf / 25mm-500gf / 25m
m and a shear adhesive strength of 0.1 N / cm ^{2 to} 5 N /
According to the sheet-like pack agent of the present invention which satisfies the two conditions of a cm ² at the same time, during peeling when the irritation and sticking tightness reduction and sticking during peeling difficulty and aged for removal performance horny It has been confirmed that the generally contradictory properties of improvement are achieved.

As is clear from the results shown in Table 2, the ratio of the total length of the connecting portion (a) to the total length of the cut portion (b) was measured on the release paper stuck to the pack agent layer. (A: b)
It was confirmed that by providing a cut portion having a ratio of 1: 5 to 1:30, the releasability of the release paper was significantly improved.

[0072]

As described above, according to the sheet-shaped pack of the present invention, peeling is sufficiently prevented without sticking at the time of sticking, and aging without accompanying irritating feeling such as pain at the time of peeling. The keratin can be sufficiently removed. Therefore, according to the sheet pack of the present invention,
Even if it is suitable for applications such as a face that has irregularities and has a lot of movement, it reduces irritation at the time of peeling and tightness at the time of sticking, and it is difficult to peel at the time of sticking and improves removal performance of aged keratin. Usually, it is possible to achieve both mutually contradictory characteristics.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view showing a preferred embodiment of a sheet-shaped pack agent of the present invention.

FIGS. 2 (a) to 2 (d) are front views each showing a preferred embodiment of a facial sheet-like pack agent of the present invention.

FIG. 3 is a front view showing a state in which the facial sheet pack of the present invention is attached to the face.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... cataplasm, 2 ... support, 3 ... water-containing plaster layer, 4 ... release film, 5 ... cut part, 51 ... cut part, 52 ... connection part.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4C076 AA73 AA80 BB31 CC18 DD27A DD38X DD39 DD39A EE09A EE24A EE42A FF21 4C083 AB372 AB442 AC122 AC172 AD042 AD092 AD412 CC07 DD12 DD27 EE06 EE07

Claims (3)

[Claims] 1. A sheet-like pack comprising a base fabric and a pack layer spread on the base fabric, wherein the sheet-like pack meets the following conditions a) and b): Packing agent. a) 180 degree peeling force is 5 gf / 25 mm to 500 gf /
25 mm. b) The above-mentioned sheet-form packing agent is 25 mm wide × 80 mm long.
25 mm × length 25 of the pack agent layer
mm part was stuck on a test plate specified in JIS Z 0237-1991 8.2.2, and the stuck part was press-bonded with a force of 5 kgf for 15 minutes. The test piece was pulled at a tensile speed of 300 ± 30 mm / min and stuck so that the force applied to the test piece was parallel to the center line of the test piece, with the center line of the grip of the tensile tester being on a straight line. When the portion is peeled off or the test piece is cut, the shear adhesive strength is 0.1 N / cm ^{2 to} 5 N /
it is cm ^2. 2. The release paper further comprising a release paper adhered to the pack agent layer, wherein a cut portion comprising a cut portion and a connection portion which are alternately repeated is formed on the release paper. Item 6. The sheet-like pack according to Item 1. 3. The ratio (a: b) of the total length (a) of the connecting portion to the total length (b) of the cut portion is 1: 5 to 1:30.
3. The sheet according to claim 2, wherein the cut portion is formed in any shape selected from the group consisting of a straight shape, an S shape, a wave shape, and a saw blade shape. 4. Packs.