JPH0415681B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a cosmetic applicator suitable for applying makeup cosmetics, such as a puff or a tip with a handle, and the manufacture thereof. It is about the method.

[Conventional technology]

Conventionally, various foams such as foamed polyurethane and foamed rubber have been frequently used as materials for the application portion of cosmetic applicators.

Conventionally, when manufacturing cosmetic applicators from foam, a large foam block or sheet is cut or punched into an appropriate size according to the size of the cosmetic applicator, and then the surface of this smaller foam is It is finished into the desired shape of the cosmetic applicator by cutting and polishing.

In general, when various foams such as foamed polyurethane or foamed rubber are molded into a block or sheet, the part that was in contact with the mold or frame surface is called a face membrane, which is not foamed and has no pores. A hard smooth membrane is formed. On the other hand, a cosmetic applicator is used to apply cosmetics to the skin by applying cosmetics to the skin while lightly pressing the tool. However, since the smooth face film cannot contain cosmetics and is hard, this face film is a nuisance. Therefore, if this surface film is present, it must be removed by cutting or polishing to expose the internal porous layer.

As described above, polishing of the foam surface is essential in foam processing for finishing the shape of the applicator or removing the surface film.

As described above, during processing from large foam blocks or sheets to finished small cosmetic applicators, the foam skeleton forming the foam is cut and polished. Therefore, the cut end of the foam skeleton on the surface of the applicator (that is, the application part) has a sharp point. The thus formed sharp portions on the surface of the applicator cause skin irritation such as tingling and stiffness when applying cosmetics.

In order to reduce irritation to the skin surface as mentioned above and obtain a cosmetic applicator with a good feeling of use, the applicant has already made the surface of the skeleton of the foam flexible in Japanese Utility Model Publication No. 57-29687. We proposed coating it with synthetic resin.

As mentioned above, by coating the surface of the skeleton of the foam with a flexible synthetic resin, skin irritation such as tingling and stiffness felt when applying cosmetics can be significantly reduced.

Furthermore, various studies have been made to heat-treat the surface of the foam to round off the cut edges of the skeleton that constitutes the foam.

[Problem that the invention seeks to solve]

However, even if the surface of the foam skeleton is coated with a flexible synthetic resin, people with sensitive skin may still experience irritation, and even people with normal skin may experience sensitive skin areas such as around the eyes. There is a need for cosmetic applicators that are even less irritating and easier to use.

In addition, when covering the surface of the skeleton of a foam pair with a flexible synthetic resin, in order to round off the sharply pointed parts of the foam skeleton on the surface of the applicator with the coating layer, it is better to have a thicker coating layer. However, if the coating layer is too thick, the pores of the foam may be sealed or the applicator may feel stiff, resulting in a poor usability. Conversely, if the thickness of the coating layer is too thin, sharp points will not be rounded, and therefore irritation of the applicator to the skin will not be reduced. Furthermore, when forming a synthetic resin coating layer on a foam in this way, it is necessary to delicately adjust the viscosity, amount of adhesion, etc. of the synthetic resin.

Furthermore, when attempting to round the cut end by heat treatment, the heat treatment is performed near the melting point of the foamed material, which poses the problem of deterioration of the foamed material, and has not been put to practical use.

Furthermore, polishing the foam is extremely inefficient in production. In other words, small particles of abrasive powder particles that have been polished enter the inside of the foam, and therefore, in the subsequent process, suction processing or cleaning treatment is required to remove the abrasive powder particles. It takes time and effort.

In addition, in cosmetic applicators, the foaming ratio is 5.
Foams with a magnification of ~70 times are generally used, but the smaller the foam's expansion ratio, the finer the texture of the foam and the better it feels on the skin. However, if the foaming ratio is reduced, there is a problem that the entire applicator becomes too hard and the cost increases.

In this way, with conventional foam applicators,
There were various problems with both quality and manufacturing process.

[Purpose of the invention]

The present invention has been made in view of these backgrounds, and the purpose of the present invention is to solve the conventional problems as described above, and to make it easy to produce and use the finished product. The purpose of the present invention is to provide a cosmetic applicator that is non-irritating and soft to the touch, has a good feel, and is excellent in quality, and to provide a method for producing the same.

[Means for solving problems]

According to the present invention, the applicator body is made of a foam, and the foam layer is coated on the surface of the body and has a foaming ratio smaller than that of the body, and the foam layer has fine particles formed by tearing on the outer surface of the applicator body. The above-mentioned problems have been solved by a cosmetic applicator characterized in that it has a fluff-like nap, and the outer surface with the fluff-like nap serves as a cosmetic application surface.

Further, in the method for manufacturing the applicator, the foaming raw material liquid is brought into a state where it can be foamed mechanically, by mixing a foaming agent or by chemical reaction, and the foaming raw material liquid has a foaming ratio larger than the foaming ratio of the foaming raw material liquid. A sheet-like foam made of foam and a release sheet are bonded together using the foaming raw material liquid, the foaming raw material liquid is brought into a foamed state and at least substantially solidified to form a foamed layer, and then the foamed layer is torn while the A cosmetic applicator characterized in that the release sheet is peeled off, the sheet-like foam becomes the applicator main body, and the foam layer formed on the surface of the sheet-like foam becomes the cosmetic application surface. The manufacturing method solves the above problems.

[Effect]

According to the present invention, the outer surface of the foam layer formed on the surface of the applicator main body is the cosmetic application surface, and this outer surface has fine fluff-like naps caused by tearing, so it has an extremely soft touch. This makes it a cosmetic applicator that does not irritate the skin.

Furthermore, even if the foam skeleton on the surface of the applicator body has sharp cut edges caused by processing, these cut edges are covered with the foam layer, so they do not irritate the skin during application.

According to the method of the present invention, a foaming raw material liquid is made into a foamable state by mechanical foaming, mixing of a foaming agent, or chemical reaction, and a foam having a foaming ratio larger than the foaming ratio of the foaming raw material liquid is produced. The sheet-like main body and the release sheet are bonded together using the foaming raw material liquid, and the foaming raw material liquid is foamed and at least substantially solidified to form a foam layer, so that the foam layer is fixed to the sheet-like main body on one side. However, the other side is adhered to the release sheet. Therefore, when the release sheet is subsequently peeled off, the foam layer is pulled in opposite directions from both the sheet-like main body and the release sheet in its thickness direction, and is torn into two. When the foam layer is torn, the foam skeleton of the foam layer is completely stretched, that is, a stretching phenomenon occurs, and the foam layer becomes ultra-fine and fluffy, and is cut in a raised state.
Since this fluff-like raised surface is used as the cosmetic application surface of the cosmetic applicator, the fluff-like raised surface comes into contact with the skin when applying the cosmetic, and a cosmetic applicator with a non-irritating and soft touch quality can be obtained.

In addition, since the stretching phenomenon of the foam occurs only in the foam layer on the surface of the cosmetic applicator, it does not affect the strength or stiffness of the foam itself of the applicator itself, and the strength of the applicator itself is reduced. There is no problem with performance such as impact resilience or impact resilience.

In addition, if a foam with a small expansion ratio is simply applied to completely cover the surface of the applicator body,
A non-foaming surface film is formed on the coated surface. However, according to the present invention, the non-foamed surface film of the foamed layer is peeled off at the same time as the release sheet is peeled off, so there is no need to remove the surface film with a knife or polishing as in the past. , there is no need to process the polishing debris generated when removing the surface film, simplifying the production process.

〔Example〕

The present invention will be explained in detail below based on the illustrated embodiments.

FIG. 1 is a sectional view showing an embodiment of the cosmetic applicator of the present invention.

The cosmetic applicator of this example is a puff with a canopy, and the applicator material 1 manufactured by the method of the present invention, which will be described later, is placed in a circular drawing machine and drawn with a core 7 inserted therein for application. A canopy 5 is attached thereon with an adhesive 6 to form an applicator.

The applicator material 1 includes an applicator main body 2 made of foam, and a foam layer 3 that is applied to the surface of the main body 2, has a smaller foaming ratio than the main body 2, and has fine fluff-like naps 31 on the surface. The foamed layer 3 is drawn so that the surface having the fluff-like naps 31 becomes the outer surface of the application area.

FIG. 2 is a sectional view showing another embodiment of the cosmetic applicator of the present invention.

The cosmetic applicator of this embodiment is an applicator with a handle, and the applicator material 1 is coated with the core body 9 in such a way that the foam layer 3 having the fluff-like naps 31 becomes the outer surface of the applicator part.
The base of the core 9 and the hem of the applicator material 1 are fitted into the hole of the handle 8 to form an applicator.

FIGS. 3 and 4 are perspective views showing still further embodiments.

The puffs of these examples are made by punching out the applicator material 1 and polishing the sides of the punched material. The puff shown in FIG. 3 has a foam layer 3 having fluff-like naps 31 on only one side of the applicator body 2. The puff shown in FIG. 4 has a foamed layer 3 having fluff-like naps 31 on both sides of the applicator body 2. Note that since the outer surface of the foam layer 3 having the fluff-like naps 31 serves as the cosmetic application surface, and the side surfaces of the puff do not serve as the cosmetic application surface, no problem occurs even if the side surfaces of the puff are polished.

5A to 5E are cross-sectional views of the applicator material at each step for explaining the steps of manufacturing the applicator material 1 used in the cosmetic applicator of the present invention.

First, as shown in FIG. 5A, a sheet-like foam 12 that will become the applicator main body 2 is prepared. This sheet-like foam 12 may be one that has been commonly used as a cosmetic applicator, and has a foaming ratio of 7 to 7.
A value of about 60 times is convenient.

For example, foams of synthetic resins such as polyvinyl chloride, polyester, polyethylene, polyurethane, and polypropylene, NBR (acrylonitrile butadiene rubber), SBR (styrene butadiene rubber), NR (natural rubber), silicone rubber, fluoro rubber, etc. A sheet-like product of rubber foam can be used, and the foam may be appropriately selected depending on the type of cosmetic to be applied, the purpose of the applicator, the shape, etc.

Next, the foaming raw material liquid is brought into a state where it can be foamed by mechanical foaming, mixing of a foaming agent, or chemical reaction. In this case, the foaming ratio of the foaming raw material liquid is smaller than the foaming ratio of the sheet-like foam 12, preferably about 3 to 15 times.

The foaming raw material liquid in the present invention is one that can form a foam and has a viscosity suitable for coating. For example, the viscosity is
The one adjusted to around 1000CPS to 4000CPS is optimal for coating.

The main raw materials for the foaming raw material liquid include synthetic resins such as polyvinyl chloride, polyester, polyethylene, polyurethane, and polypropylene, NBR (acrylonitrile butadiene rubber), SBR (styrene butadiene rubber), NR (natural rubber), silicone rubber, and rubber. Raw rubber or the like can be used.

More specifically, the following can be used as these foaming raw material liquids, for example.

*For synthetic resin: Superflex (polyurethane)
Daiichi Kogyo Seiyaku Co., Ltd. Bonteitsuku (Polyurethane)
Dainippon Ink & Chemicals Co., Ltd. Dayknal (acrylic)
Dainippon Ink & Chemicals Co., Ltd. Primal (acrylic)
Rohm and Haas Co., Ltd. These are emulsified liquids, and these liquids contain crosslinking agents such as melamine formalin resin,
A polyamide crosslinking agent, an epoxy crosslinking agent, a blocked isocyanate crosslinking agent, etc. can be used in combination.

*For rubber foam: Nipole 4850 (styrene rubber) Nippon Zeon Co., Ltd. Nipole LX-531 (acrylonitrile rubber)
Nippon Zeon Co., Ltd. JSR (0560) (styrene rubber) Japan Synthetic Rubber Co., Ltd. These are emulsified liquids, and conventionally known vulcanizing agents and vulcanization accelerators are added to these liquids. .

In the case of polyurethane, polyol or polyester and an isocyanate compound (for example, tridiisocyanate, naphthalene diisocyanate, etc.) may be used as a foaming raw material liquid, and these may be chemically reacted to form a foam.

The foaming raw material may be appropriately selected depending on the type and purpose of the cosmetic.

Further, a thickener may be added to the foaming raw material liquid in order to improve coating suitability. Methyl cellulose, sodium polyacrylate, and sodium alginate are used as thickeners in the raw material liquid for synthetic resin foam. In the case of rubber foam, a casein ammonia solution or the like is used.

In this way, the viscosity of the foaming raw material liquid can be adjusted to 1000CPS~
Adjusting to around 4000CPS is optimal for coating.

After blending various additives as necessary, the foaming raw material liquid is mixed with an oak mixer, whisking machine, etc.
The final coating solution is prepared by mechanically foaming the solution to a size of 10 times, preferably 3 to 7 times.

Instead of mechanically foaming the foaming raw material liquid, a foaming agent may be mixed into the raw material liquid to form a coating liquid, and foaming may be performed by heating in a subsequent step.

Alternatively, like polyurethane, a polyol or polyester and an isocyanate compound may be mixed to form a coating liquid, and the mixture may be chemically reacted to form a foam.

As described above, the foaming material liquid is mechanically foamed, or a coating liquid made into a foamable state by mixing a foaming agent or a chemical reaction is applied to the sheet-like foam 12 to form the sheet-like foam 12. A coating layer 13 of a constant thickness is formed on the surface (see FIG. 5B).

When applying the coating liquid, an appropriate method such as a roll coating method such as a knife over roll coating method or a reverse roll coating method, a spray coating method, or a dipping method may be used. In either method, in order to obtain a homogeneous foam layer, it is preferable to apply the coating liquid to the surface of the sheet-like foam 12 with a uniform thickness. The thickness of the coating layer 13 is approximately 0.2 mm to 3 mm, but the type of sheet-like foam 12, foaming ratio, surface condition, etc., the type of coating layer 13, viscosity, foaming ratio, etc., and the cosmetic applicator. The appropriate thickness is determined by taking into consideration the type and type of cosmetic to be applied. Generally, about 0.3 mm to 1.5 mm is preferable.

The thickness of the coating layer 13 may be controlled in a conventional manner. For example, in the reverse roll coating method, the gap between the metering roll and the application roll, the speed ratio between the application roll and the bucking roll, etc. are adjusted. In addition, in the knife roll method, the gap between the knife and the sheet-like foam 12, the sheet-like foam 1
Adjust the running speed, viscosity of the coating liquid, etc. in step 2.

Next, as shown in FIG. 5C, a release sheet 4 is attached to the surface of the coating layer 13.

As the release sheet 4, a woven fabric, a non-woven fabric, a knitted fabric, paper, a sheet whose surface is treated with flocking, a sheet made of a foam, etc. can be used. In particular, it is desirable that the release sheet 4 has a raised surface or an uneven surface.

In this way, if there are raised or uneven surfaces on the surface of the release sheet 4, the raised or uneven parts will cause the coating layer 1 to
Then, when the coating layer 13 is solidified in a foamed state to form the coating layer 13', the raised portions and uneven portions firmly bite into the coating layer 13' and become fixed. In other words, the raised parts and uneven parts are foamed layer 1.
It has an anchoring function for 3'.

In order to bring the release sheet 4 into close contact with the coating layer 13, the raised portions or convex portions of the release sheet 4 are attached to the coating layer 1.
It is preferable to apply pressure treatment to such an extent that it is buried in the 3. Note that the portion of the coating layer 13 to which the release sheet 4 is not completely adhered will be easily peeled off from the release sheet 4 when the release sheet 4 is removed in a later step, and will not be torn when forming a sheet-like foam. body 12
Therefore, the foamed surface film in that area remains on the surface of the sheet-like foam 12, degrading the quality of the finished product.

In addition, in FIG. 5 B and C mentioned above,
The coating liquid is applied to the sheet-like foam 12 and then the release sheet 4 is attached.However, conversely, the foaming raw material solution is applied to the release sheet 4 and then the sheet-like foam 12 is attached thereto. May be combined.

Next, as shown in FIG. 5D, the coating layer 13 is solidified in this state.

When an emulsified synthetic resin liquid is mechanically foamed, it reacts and solidifies at 120°C to 150°C for about 10 to 20 minutes.

Furthermore, even when an emulsified rubber liquid is mechanically foamed, it can be foamed and solidified by vulcanization treatment at 110° C. for about 15 minutes.

In this way, the sheet-like foam 12 and the release sheet 4 are bonded together with the foam layer 13' present in between, and the raised portions and uneven portions on the surface of the release sheet 4 are formed into the foam layer 13'. It's in a state where it's stuck.

Next, as shown in FIG. 5E, the release sheet 4
is peeled off from the sheet-like foam 12. The intermediate foam layer 13' adheres to the sheet-like foam 12 on one side,
Since the other side is adhered to the release sheet 4, when the release sheet 4 is peeled off, the foam layer 13' is pulled in the opposite direction from both the sheet-like foam 12 and the release sheet 4 in its thickness direction. As a result, it is torn in two. When the foamed layer 13' is torn, the foamed skeleton of the foamed layer 13' is completely stretched, that is, a stretching phenomenon occurs, and the foamed layer becomes extremely fine and fluffy, and is broken in a raised state.

When peeling off the release sheet 4, the foam layer 13'
This is done so that the surface film of the foamed layer 13' is completely stuck to the release sheet 4, that is, the surface film of the foam layer 13' is completely left on the release sheet 4.

FIG. 6 is an enlarged sectional view schematically showing the surface of the foam layer 3 (see FIG. 5F) on the sheet-like foam 12 after the release sheet 4 has been peeled off. In this way, fine fluff-like naps 31 are formed on the surface of the foam layer 3 on the sheet-like foam 12.

Next, the applicator material 1 manufactured in this way is cut or punched into an appropriate size according to the size of the desired cosmetic applicator, and the fluff-like nap 31
so that the surface having the surface becomes the cosmetic application surface,
Finish into the desired shape of the cosmetic applicator. for example,
It is passed through a circular wringer to form a cosmetic applicator as shown in FIG. 1, a handled applicator as shown in FIG. 2, or a puff as shown in FIG. 3.

In the above-mentioned embodiment, the foam layer 13' having the fluffy nap 31 is provided only on one side of the sheet-like foam 12, but the foam layer 13 and the release sheet 4 are provided on both sides of the sheet-like foam 12. Then, when the release sheet 4 is peeled off, a foam layer 13' having fluff-like naps 31 can be formed on both sides of the sheet-like foam 12. In this way, the seventh
An applicator material 1 as shown in the figure can be obtained. This applicator material 1 can be punched out to form a puff as shown in FIG. 4, which is convenient because both sides of the puff can be used as application surfaces.

FIG. 8 is a sectional view showing another embodiment of the applicator material 1 of the present invention. In this embodiment, an anchor coat layer 10 is provided between the applicator body 2 and the foam layer 3. This anchor coat layer 10 is intended to increase the adhesion strength between the applicator body 2 and the foam layer 3, and is made of synthetic resin such as acrylic, urethane, polyester, polyamide, vinyl, polyolefin, etc. liquid or
It is formed by applying a synthetic rubber liquid such as NBR or SBR or a natural rubber liquid to the surface of the applicator main body 2 by an appropriate method such as spray coating, roll coating, or knife coating.

The anchor coat layer 10 may be in the form of a film. For example, the anchor coating liquid is applied onto release paper and dried to form a film, which is then adhered to the surface of the applicator main body 2 with an adhesive. or,
When the anchor coat liquid applied on the release paper is semi-dry, it is directly attached to the surface of the applicator main body 2 without adhesive, and when it is completely dry, the release paper is peeled off.
Form into a film.

In this case, if you use a liquid-impermeable film,
Even low-viscosity cosmetics such as liquid cosmetics can be prevented from penetrating into the applicator. Therefore, it is an economical cosmetic applicator because it can prevent wasteful consumption of cosmetics.

Furthermore, as another example, a sheet-like foam 12 is used to adjust the flexibility (waist) etc. during use.
Foamed layer 1 having fluff-like naps 31 once on the surface of
After forming the foam layer 13', a coating liquid is further applied to the surface of the foam layer 13', a release sheet 4 is attached, and the release sheet 4 is peeled off, thereby forming the foam layer 13 having the fluff-like naps 31. ' may be formed in two stages or in multiple stages.

In this way, a desired cosmetic applicator can be obtained by making various modifications based on the embodiment described in FIGS. 5A to 5F so as to adjust the flexibility, texture, etc. during use. be able to.

Example 1 As the sheet-like foam 12, polyurethane SD
A 7 mm thick foam sheet (expansion ratio: 40 times) from Bridgestone Tire Co., Ltd. was used.

The following components were used as the foaming raw material liquid.

*Main ingredient: Polyurethane emulsion [Superflex 200: Daiichi Kogyo Seiyaku Co., Ltd.] 100 parts: *Foam stabilizer: 30% aqueous solution of ammonium stearate 12 parts *Crosslinking agent: Sumitex-M3 [Sumitomo Chemical Co., Ltd.] 2 parts Sumitex Accelerator ACX [Sumitomo Chemical Co., Ltd.] 0.2 parts After mixing the foaming raw material liquid consisting of the above components, foaming was performed using a foaming machine to a ratio of 2.5 times, and this was used as a coating liquid.

Apply this coating liquid to the surface of the sheet-like foam 12.
After coating 150g/ ^m2 with a knife over roll coater, immediately adhere to a polyester nonwoven fabric: Acstar B-504-10P (Toray Industries, Inc.) and heat at 80°C.
After drying for 20 minutes, heat treatment was performed at 140°C for 10 minutes to crosslink the components of the coating solution and solidify them in a foamed state.

Next, after the sheet obtained in this manner has cooled, the adhered nonwoven fabric is peeled off to obtain an applicator material 1 in which a foam layer 13' having fine fluff-like naps 31 is provided on the surface of the polyurethane sheet 12. Ta.
This applicator material 1 was finished by punching or the like to produce a puff for powder leaf foundation.

The puff of this example has a fluffy nap 31 on the application surface, so it has an extremely good feel, and when applying powdered cosmetics, etc., the puff contains much less powder than conventional products of this type. It was also confirmed that the condition was good.

FIG. 9 is a sectional view showing still another embodiment of the applicator material 1 according to the present invention, and in this embodiment, spherical beads 32 are mixed in the foam layer 13'. Unlike the example, the spherical beads 32 are inside the skeleton of the foam layer 13' and are also deposited on the surface of the skeleton of the foam layer 13'. In addition, in FIG. 9, the spherical beads 32 are shown enlarged in comparison with the dimensions of the foam skeleton of the foam layer 13'.

In order to manufacture the applicator material 1 of this embodiment, the spherical beads 32 may be mixed into the foaming raw material liquid explained with reference to FIG. 5, and the subsequent processing may be carried out in the same manner. That is, the foaming raw material liquid containing the spherical beads 32 is mechanically foamed, or a coating liquid is made into a foamable state by mixing a foaming agent or by chemical reaction. This coating solution containing spherical beads 32 is applied to the sheet-like foam 12, and a foam layer 13 containing spherical beads 32 is applied to the surface of the sheet-like foam 12 to a constant thickness.
A release sheet is attached to this surface,
In this state, the foam layer 13 containing spherical beads 32
is solidified, and then the release sheet is peeled off from the sheet-like foam 12. In this way, the ninth
The applicator material 1 shown in the figure is obtained.

The spherical beads 32 to be mixed into the foaming raw material liquid will be explained.

Spherical beads themselves have recently been developed and commercialized, and are almost completely spherical microscopic powder particles.Currently, their uses include fillers, powder lubricants, adsorbents, and precision filtration materials. has been done.

Moreover, the spherical beads 32 are not only solid ones, but also porous ones and hollow ones such as microcapsules.

The material of the spherical beads 32 used in the present invention is not particularly limited, and examples thereof include polyethylene, polypropylene, polyurethane, polyester, polyamide, polycarbonate, silicone resin, fluororesin, phenolic resin, acrylic resin, polystyrene epoxy resin, vinyl resin, Synthetic resins such as benzoguanamine resin; cellulose compounds; starch compounds; protein compounds such as collagen; calcium compounds; inorganic compounds such as ceramics and glass; metals; rubber, etc. can be used.

The material of the spherical beads 32 may be appropriately selected depending on the cosmetic to be applied. For example, water-repellent paraffin, polyethylene, silicone resin, fluororesin, etc. are suitable for cream foundations and the like. When a fluororesin having oil repellency is used, cosmetics adhering to the applicator can be easily washed off.

Water-absorbing proteins such as cellulose, collagen, and casein are suitable for summer foundations that use water. In addition, using ceramic, glass, phenolic resin, polycarbonate, polystyrene, polypropylene, polyamide, etc., reduces the frictional resistance of the applicator, making it easier to apply and spread cosmetics on the skin, and is also suitable for pine surgery. .

Examples of commercially available spherical beads include the following.

*Product Name: Fine Pearl, Material: Polystyrene, Manufacturer: Sumitomo Chemical Co., Ltd. *Product Name: Fine Pearl, Material: Acrylic Resin, Manufacturer: Sumitomo Chemical Co., Ltd. *Product Name: Tekuma-MB-2, Material : Polymethyl methacrylate, Manufacturer: Sekisui Plastics Co., Ltd. *Product name: Toray Nylon SP-500, Material: Nylon, Manufacturer: Toray Co., Ltd. *Product name: Flow Beads LE-1080, Material: Polyethylene, Manufacturer: Steel Chemical Industry Co., Ltd. *Product name: Spherical porous silica, Material: Silicic anhydride,
Manufacturer: Suzuki Yushi Kogyo Co., Ltd. *Product name: Glass beads, Material: Glass, Manufacturer: Nippon Electric Glass Co., Ltd. (Shiga Prefecture) The spherical beads 32 used in the present invention are almost completely spherical. Particle sizes of about 0.1 to 1000 microns can be used, preferably an average particle size of 5.
~20 microns is suitable.

Furthermore, when porous spherical beads are used, since they have pores, they have excellent water absorption and water retention properties. The amount of spherical beads to be mixed into the foaming raw material depends on the size of the spherical beads, the material of the spherical beads, the type of cosmetics (viscosity, properties, etc.), and the intended use of the applicator (for applying cosmetics, for pine surge, etc.) , taking into consideration the amount of cosmetics contained, etc., and determining the amount so as to provide a good texture.

If the amount of spherical beads added is large, foaming may become difficult. In such cases, the foaming raw material and foaming conditions are controlled. In normal cases, spherical beads can be blended in an amount of about 5 to 70% by weight based on the solid content of the foaming raw material. However, in consideration of the strength of the obtained foam, it is preferable to set the amount to about 50% of the weight of the foaming raw material.

Example 2 As the sheet-like foam 12, polyurethane SD
A 7 mm thick foam sheet (expansion ratio: 40 times) from Bridgestone Tire Co., Ltd. was used.

A foam stabilizer, a thickener, and a crosslinking agent were added to the polyurethane emulsion in the same manner as in Example 1, and nylon spherical beads with an average particle size of 10 μm were added at a ratio of 50 parts by weight to 100 parts by weight of polyurethane solids. A resin liquid was prepared, and air was blown into the resin liquid to foam it four times, and this was used as a coating liquid.

After applying this coating solution to the surface of the sheet-like foam 12 to a thickness of 0.8 mm using a knife-over roll coater, a release sheet made of polyester nonwoven fabric was immediately adhered to the surface in the same manner as in Example 1, and a temperature of 20°C at 80°C was applied. After drying for 10 minutes, heat treatment was performed at 140°C for 10 minutes to crosslink the components of the coating liquid and solidify them in a foamed state. Then, after the sheet obtained in this way had cooled, the adhered nonwoven fabric was peeled off. Polyurethane sheet 12
An applicator material 1 provided with a foam layer 13' having fine fluff-like naps 31 and spherical beads 32 on the surface of the applicator material 1.
I got it. This applicator material 1 was finished by punching or the like to produce a puff for powder leaf foundation.

The puff of this example has a good feel because the fluffy naps 31 are present on the coated surface, and the spherical beads 32 are arranged on the surface of the foam skeleton of the foam layer 13' (including the fuzzy naps 31). Since the part is exposed, the sensation of irritation is further reduced and the feel is extremely good. Furthermore, when applying powdered cosmetics, etc., the powder content is extremely good compared to conventional products of this type.

Furthermore, in addition to blending spherical beads into the foaming raw material liquid as in Example 2, other materials for improving the properties and texture (touch) of cosmetics are also blended into the foaming raw material liquid. Good too.

For example, when adding hygroscopicity to a foam and using it as an applicator for summer cosmetics, as a modifying material,
For water absorption and water retention properties of cross-linked polymers of carboxymethyl cellulose, alkali metal carboxylate salts, starch-acrylic polymers, vinylon, rayon, acrylic moisture absorption materials, sponge powder, cotton powder, calcium carbonate, calcium sulfate, polyamino acids, etc. It is possible to blend excellent powders and fibers.

Furthermore, when used for oil-based foundations, it can be modified by adding silicone resin, silicone oil as a lipophilic material, or fluororesin as an oil repellent agent. In the case of a powdery modifier, it is preferable that its size is the same as or smaller than the spherical beads 32. Also, spherical beads 3
If the mixing ratio with 2 is too large, the smooth texture of the spherical beads 32 cannot be fully utilized. Particularly, when the granular modifier is larger, there is such a tendency, so the amount of the modifier should be limited to about the same amount as the spherical beads 32.

Furthermore, when adding spherical beads, it is also possible to mix a plurality of beads with different sizes. That is, by incorporating spherical beads of different particle sizes and materials into a foam that takes into consideration the viscosity, properties, etc. of the make-up cosmetic, it is possible to obtain a cosmetic applicator with even better absorption of the cosmetic. can.

〔Effect of the invention〕

The cosmetic applicator of the present invention has a foam layer on the surface of the applicator body with a foaming ratio smaller than that of the applicator body, and the outer surface of this foam layer serves as the cosmetic application surface, so it has a good feel. Moreover, since this cosmetic application surface has ultra-fine fluff-like raised hairs, according to the cosmetic applicator of the present invention, the fluff-like raised hairs come into contact with the skin during application of the cosmetic, causing non-irritation and Soft touch and does not irritate the skin.

Furthermore, even if the foam skeleton on the surface of the applicator body has sharp cut edges caused by processing such as polishing or cutting, these cut edges are covered with the foam layer, so they do not irritate the skin during application.

Conventional applicators made of foam required a step of polishing the cosmetic application surface, but according to the present invention, a foam layer having fine fluff-like naps is formed on the surface of the applicator body made of foam. Since this is provided, there is no need for a polishing process for the cosmetic-applied surface, resulting in good production efficiency.

In addition, if a foam with a small expansion ratio is simply applied to completely cover the surface of the applicator body,
A non-foaming surface film is formed on the coated surface. However, according to the present invention, since the release sheet is peeled off while tearing the foam layer, the non-foamed surface film of the foam layer is removed when the release sheet is peeled off.
Since the surface film is peeled off at the same time, there is no need to remove the surface film using a knife or polishing as in the conventional method.Therefore, there is no need to process the polishing debris generated when the surface film is removed, resulting in a simple production process.

In the cosmetic applicator of the present invention, when spherical beads are included in the foam layer, the spherical beads come into contact with the skin during application because they are deposited on the surface of the skeleton forming the foam layer. Spherical beads have round surfaces and no sharp edges, so they do not give a tingling or stiff feeling when they come into contact with the skin, and are extremely less irritating to the skin. Moreover, since the spherical beads are in point contact with the skin when applying the cosmetic, the contact area between the skin and the foam skeleton is small, and therefore the frictional resistance when spreading the cosmetic is small.
Very little irritation to the skin.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing one embodiment of the cosmetic applicator of the present invention, FIG. 2 is a sectional view showing another embodiment of the cosmetic applicator of the present invention, and FIGS. 3 and 4 are respectively FIG. 7 is a perspective view showing yet another embodiment. 5A to 5F are cross-sectional views of the applicator material at each step for explaining the steps of manufacturing the applicator material used in the cosmetic applicator of the present invention. FIG. 6 is an enlarged sectional view schematically showing the surface of the foam layer on the sheet-like foam after the release sheet has been peeled off. FIG. 7 is a sectional view showing another embodiment of the applicator material of the present invention, FIG. 8 is a sectional view showing still another embodiment of the applicator material of the present invention, and FIG. 9 is a sectional view showing another embodiment of the applicator material of the present invention. FIG. 7 is a cross-sectional view showing still another example of the material (having a foam layer containing spherical beads). 1... Applicator material, 2... Applicator body, 3...
Foam layer, 4... Release sheet, 5... Canopy, 6...
... adhesive, 7 ... core, 8 ... pattern, 9 ... core, 10 ... anchor coat layer, 12 ... sheet-like foam, 13 ... coating layer, 13' ... foam layer,
31...Fuzzy raised, 32...Spherical beads.

Claims (1)

[Scope of Claims] 1. An applicator body made of foam, and a foam layer coated on the surface of the body and having a smaller foaming ratio than the body, and the foam layer has fine particles formed by tearing on its outer surface. 1. A cosmetic applicator having a fluff-like nap, the outer surface having the fluff-like nap serving as a cosmetic application surface. 2. The cosmetic applicator according to claim 1, wherein spherical beads are mixed in the foam layer. 3 Consists of an applicator main body made of foam, an anchor coat layer applied to the surface of the main body, and a foam layer applied to the surface of the anchor coat layer and having a smaller foaming ratio than the main body, and the foam layer is 1. A cosmetic applicator, characterized in that the outer surface has fine fluff-like naps produced by tearing, and the outer surface with the fluff-like naps serves as a cosmetic application surface. 4. The cosmetic applicator according to claim 3, wherein the anchor coat layer is a liquid-impermeable layer. 5. The foaming raw material liquid is mechanically foamed or brought into a state where it can be foamed by mixing a foaming agent or by a chemical reaction, and the foaming raw material liquid is separated from a sheet-like foam made of a foam having a foaming ratio larger than the foaming ratio of the foaming raw material liquid. The foaming material liquid is brought into a foamed state and at least substantially solidified to form a foamed layer.Then, the peeling sheet is peeled off while tearing the foamed layer, and the foaming material liquid is foamed. 1. A method for manufacturing a cosmetic applicator, characterized in that the body serves as an applicator main body, and the foam layer formed on the surface of the sheet-like foam serves as a cosmetic application surface.