JP3240453U - Cosmetic puff and its manufacturing method - Google Patents

Abstract

The present invention provides a high-performance cosmetic puff having a good feeling on the skin, etc., which has a laminated structure using a sheet or film made of a rubber elastic material, and at least a part of which is bonded and integrated. A cosmetic puff (10) comprises a central layer (1) made of polyurethane foam, a surface layer (2) provided on the central layer (1) and forming a cosmetic tool application surface, and an opposite surface layer (2) through the central layer (1). A cosmetic puff formed by bonding at least a back layer 3 provided on the side, the surface layer 2 is an NBR foam sheet or the like, the back layer 3 is a polyurethane synthetic leather or the like, and the layers are overlapped on the periphery It has an integrated edge portion 5 . [Selection drawing] Fig. 1

Description

The present invention is a high-performance cosmetic puff that has a good feel on the skin, etc., in which at least a part of a laminated structure made of sheets or films made of a rubber elastic material such as NBR is bonded and integrated, and a method for manufacturing the same. Regarding.

Conventionally, various cosmetic applicators have been developed in which two or more sheets, films or the like are adhered to a laminated structure to enhance performance.

For example, in Patent Document 1, a core material (1 ) wrapped in a microporous wet-laid polyurethane skin (2). FIG. 1 of Patent Literature 1 shows an example of a cosmetic puff whose peripheral portion is heat-sealed.

Further, in Patent Document 2, the amount of cosmetics deposited on the surface of a cosmetic applicator is reduced, the cosmetic adhering to the surface of the applicator is reliably transferred to the skin surface, and different types of cosmetics are applied in one application. A cosmetic applicator has been proposed in which the surface arithmetic mean roughness Ra or the maximum surface height Rz is specified to a predetermined value in order to ensure that makeup can be applied with the tool. As an example of this cosmetic applicator, a urethane film having a thickness of 9 to 10 μm, which is a flat film, is hot-melted on the surface of a dry polyurethane foam (thickness of 3 mm) used in ordinary cosmetic applicators. A chip is disclosed which is adhered with and prepared by a conventional method.

However, conventional cosmetic applicators are not satisfactory in terms of performance.
By the way, in recent years, rubber elastic materials have been used for cosmetics applicators and the like. For example, there are NBR (acrylonitrile-butadiene rubber) foam (sponge) puffs. It is common knowledge that NBR and the like are rubber, not thermoplastic, and cannot be bonded by heat. For this reason, it was technically difficult to adhere to the laminated structure disclosed in Patent Documents 1 and 2 using NBR or the like. However, rubber elastic materials such as NBR are becoming increasingly useful as cosmetic applicators, and high-performance cosmetic applicators using them have been desired.

JP-A-56-95012 International Publication No. 2013/133344

The present invention has been made in view of the above problems, and has a laminated structure using two or more sheets or films made of a rubber elastic material, at least a part of which is bonded and integrated, and has a good touch on the skin. An object of the present invention is to provide a high-performance cosmetic applicator.

As a result of intensive research, the inventors of the present invention found that NBR adheres even with heat under certain conditions, and the NBR foam is heat-sealed to other sheets or films, etc., and applied to cosmetic applicators. Thus, the inventors have found that the above object can be achieved.

The present invention has been made based on the above findings, and provides the following ideas.
(first idea)
1. At least a core layer made of polyurethane foam, a surface layer provided on the core layer and constituting a cosmetic tool application surface, and a back layer provided on the opposite side of the surface layer via the front center layer are bonded together. A cosmetic puff comprising:
The surface layer is an NBR foam sheet, an SBR foam sheet, a chloroprene rubber foam sheet, an NR foam sheet, a flocked NBR foam sheet, a flocked SBR foam sheet, a flocked chloroprene rubber foam sheet, or a flocked NR foam sheet,
The back layer is an NBR foam sheet, an SBR foam sheet, a chloroprene rubber foam sheet, an NR foam sheet, a flocked NBR foam sheet, a flocked SBR foam sheet, a flocked chloroprene rubber foam sheet, a flocked NR foam sheet, a flocked urethane foam sheet, and a flocked film. , or polyurethane synthetic leather,
A cosmetic puff characterized by comprising an edge portion formed by overlapping and integrating each of the layers on a peripheral edge.

2. 2. The cosmetic puff according to 1 above, wherein the vicinity of the edge portion has a rounded shape.

3. 3. The cosmetic puff according to 1 or 2 above, comprising a hot-melt layer between the center layer and the surface layer and between the center layer and the back layer, respectively.

(Second idea)
4. A cosmetic puff obtained by laminating at least a base layer and a surface layer constituting a cosmetic tool application surface provided on the base layer,
The base layer is an NBR foam sheet, an SBR foam sheet, a chloroprene rubber foam sheet, an NR foam sheet, a flocked NBR foam sheet, a flocked SBR foam sheet, a flocked chloroprene rubber foam sheet, or a flocked NR foam sheet,
The surface layer is a thermoplastic film,
A cosmetic puff characterized by comprising an edge portion formed by overlapping and integrating each of the layers on a peripheral edge.

5. 5. The cosmetic puff according to 4 above, wherein the vicinity of the edge portion has a rounded shape.

6. 6. The cosmetic puff according to 4 or 5 above, comprising a hot-melt layer between the base layer and the surface layer.

(Third idea)
7. A cosmetic puff comprising two base layers and a film layer sandwiched between the layers,
One of the substrate layers is an NBR foam sheet, an SBR foam sheet, a chloroprene rubber foam sheet, an NR foam sheet, a flocked NBR foam sheet, a flocked SBR foam sheet, a flocked chloroprene rubber foam sheet, or a flocked NR foam sheet. can be,
Another layer of the base layer is NBR foam sheet, SBR foam sheet, chloroprene rubber foam sheet, NR foam sheet, flocked NBR foam sheet, flocked SBR foam sheet, flocked chloroprene rubber foam sheet, flocked NR foam sheet, flocked Urethane foam sheet, flocked film, or polyurethane synthetic leather,
The film layer is a thermoplastic film,
A cosmetic puff characterized by comprising an edge portion formed by overlapping and integrating the respective layers on the peripheral edge, and having a cavity in the central portion.

8. 8. The cosmetic puff according to 7 above, wherein the vicinity of the edge portion has a rounded shape.

9. 9. The cosmetic puff of claim 7 or 8, comprising a thermoplastic surface film layer on one or both of the two base layers.

10. 10. The cosmetic puff according to 9 above, comprising a hot melt layer between the base layer and the surface film layer.

(Fourth idea)
11. 1. A method for producing the cosmetic puff according to 1 above,
a surface layer comprising an NBR foam sheet, an SBR foam sheet, a chloroprene rubber foam sheet, an NR foam sheet, a flocked NBR foam sheet, a flocked SBR foam sheet, a flocked chloroprene rubber foam sheet, or a flocked NR foam sheet;
a central layer of polyurethane foam;
NBR foam sheet, SBR foam sheet, chloroprene rubber foam sheet, NR foam sheet, flocked NBR foam sheet, flocked SBR foam sheet, flocked chloroprene rubber foam sheet, flocked NR foam sheet, flocked urethane foam sheet, flocked film, or polyurethane synthetic leather After forming a laminate by laminating a back layer consisting of
A method for producing a cosmetic puff, wherein a predetermined portion of the integrated sheet is punched at a temperature of 140° C. or higher using a hot press cut or a high frequency welder to form an edge portion.

(Fifth idea)
12. 4. The method for producing the cosmetic puff according to 4 above,
a surface layer made of a thermoplastic film;
a base layer comprising an NBR foam sheet, an SBR foam sheet, a chloroprene rubber foam sheet, an NR foam sheet, a flocked NBR foam sheet, a flocked SBR foam sheet, a flocked chloroprene rubber foam sheet, or a flocked NR foam sheet;
is laminated to form a laminate, and the laminate is hot-pressed to produce an integrated sheet,
A method for producing a cosmetic puff, wherein a predetermined portion of the integrated sheet is punched at a temperature of 140° C. or higher using a hot press cut or a high frequency welder to form an edge portion.

(Sixth idea)
13. 8. The method for producing the cosmetic puff according to 7 above,
a first base layer comprising an NBR foam sheet, an SBR foam sheet, a chloroprene rubber foam sheet, an NR foam sheet, a flocked NBR foam sheet, a flocked SBR foam sheet, a flocked chloroprene rubber foam sheet, or a flocked NR foam sheet;
NBR foam sheet, SBR foam sheet, chloroprene rubber foam sheet, NR foam sheet, flocked NBR foam sheet, flocked SBR foam sheet, flocked chloroprene rubber foam sheet, flocked NR foam sheet, flocked urethane foam sheet, flocked film, or polyurethane synthetic leather A second base material layer consisting of
A film layer made of a thermoplastic film is sandwiched between these layers, laminated to form a laminate, and the laminate is hot-pressed to produce an integrated sheet,
A method for producing a cosmetic puff, wherein a predetermined portion of the integrated sheet is punched at a temperature of 140° C. or higher using a hot press cut or a high frequency welder to form an edge portion.

According to the present invention, it is possible to provide a high-performance cosmetic puff with good touch on the skin, etc., in which at least a part of a laminated structure using a sheet or film made of a rubber elastic material is bonded and integrated, and a method for producing the same.

FIG. 1(a) is a perspective view showing a cosmetic puff according to the first embodiment of the present invention, and FIG. 1(b) is a schematic explanatory view showing a cross-sectional image of FIG. 1(a) in a front view direction. . FIG. 2(a) is a perspective view showing a cosmetic puff according to a partially modified form of FIG. 1(a), and FIG. 2(b) is a schematic illustration showing a cross-sectional image of FIG. 2(a) in a front view direction. It is a diagram. FIG. 3 is a schematic explanatory diagram showing a cross-sectional image in a front view direction showing a layered state in the manufacturing process of the cosmetic puff of FIG. 2 . FIG. 4 is a schematic explanatory diagram showing a cross-sectional image of the cosmetic puff according to the second embodiment of the present invention in the front view direction. Fig. 5(a) is a schematic explanatory diagram showing a front view cross-sectional image of a cosmetic puff according to a partial modification of Fig. 4, and Fig. 5(b) is a plan view of Fig. 5(a). FIGS. 6(a) and 6(b) are schematic explanatory diagrams showing front view cross-sectional images of the laminated state in the manufacturing process of the cosmetic puffs of FIGS. 4 and 5, respectively. FIG. 7 is a schematic explanatory diagram showing a cross-sectional image of the cosmetic puff according to the third embodiment of the present invention in the front view direction. FIG. 8 is a schematic explanatory diagram showing a cross-sectional image of the laminated state in the front view direction in the manufacturing process of the cosmetic puff of FIG. 9 is a perspective view showing a finger puff as an example of use of the cosmetic puff of FIG. 7. FIG. FIG. 10(a) is a schematic perspective view showing a tip as another usage example of the cosmetic puff of FIG. 7, and FIG. 10(b) is a schematic explanatory view showing one step in the manufacturing process of FIG. 10(a). is.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail based on its preferred embodiments with reference to the drawings.
(First embodiment)
FIG. 1(a) is a perspective view showing a cosmetic puff according to the first embodiment of the present invention, and FIG. 1(b) is a schematic diagram showing a cross-sectional image of FIG. 1(a) viewed from the front. is.

As shown in FIGS. 1(a) and 1(b), the cosmetic puff 10 of the first embodiment includes a central layer 1 made of polyurethane foam, and a surface constituting a cosmetic tool application surface provided on the central layer 1. It consists of a layer 2 and a back layer 3 provided on the opposite side of the surface layer 2 with the central layer 1 interposed therebetween.

In the cosmetic puff 10, the surface layer 2 is made from an NBR foam sheet, an SBR foam sheet, a chloroprene rubber foam sheet, an NR foam sheet, a flocked NBR foam sheet, a flocked SBR foam sheet, a flocked chloroprene rubber foam sheet, or a flocked NR foam sheet. formed. The back layer 3 includes an NBR foam sheet, an SBR foam sheet, a chloroprene rubber foam sheet, an NR foam sheet, a flocked NBR foam sheet, a flocked SBR foam sheet, a flocked chloroprene rubber foam sheet, a flocked NR foam sheet, a flocked urethane foam sheet, It is made of flocked film or polyurethane synthetic leather.
Among these materials used for the surface layer 2 and the back layer 3, NBR is particularly preferable because it is less likely to swell with liquid (liquid type) cosmetics and has high utility value.

As shown in FIGS. 1(a) and 1(b), the cosmetic puff 10 has a disk-like shape as a whole, with a large width (thickness) in the central portion and a smaller width toward the outer periphery. (narrow). The thickness of each layer of the surface layer 2, the central layer 1 and the back layer 3 is also the same. The peripheral edge of the cosmetic puff 10 is provided with an edge portion 5 which is a joint portion in which the layers of the surface layer 2, the central layer 1 and the back layer 3 are overlapped and integrated.
In addition, the shape of the cosmetic puff is not limited to a disc shape like the cosmetic puff 10 according to the present embodiment, and may be rectangular, elliptical, oval or the like in plan view. It can be changed as appropriate according to the mode.

In particular, the vicinity of the edge portion 5 (shoulder portion on the peripheral edge of the cosmetic puff 10) has a rounded shape. As will be described later in the manufacturing method of the cosmetic puff, this is achieved by applying a predetermined amount of heat with a mold to the portion where the edge portion is to be formed during the mold-cutting process, without sewing or polishing. This makes it possible to form a rounded portion in the vicinity of the edge portion 5 .

Since the cosmetic puff 10 of the present embodiment is configured as described above, it is a high-performance cosmetic puff that feels good on the skin.

Moreover, according to the cosmetic puff 10 (laminated puff) of the first embodiment, the following effects can be obtained.
(1) The feel can be easily changed depending on the properties of the urethane that constitutes (is sandwiched between) the central layer.
(2) The amount of latex raw material used can be suppressed, resulting in cost reduction.
(3) When a hot-melt film is used (described later), it acts as a barrier to prevent liquid-type foundation from penetrating deep into the skin.
(4) When a hot-melt film is used (described later), the surface layer or back layer does not drag during use, and the feeling of use is good.
(5) The edge portion has a rounded portion in the vicinity of the periphery, and no polishing is required in the manufacturing process of the edge portion.
(6) It can be manufactured with a hot press or a high frequency welder, and is easy to manufacture.
(7) Since the inside can be made hollow by bonding only the edge portion, it can be used as various cosmetic tools by inserting a finger or tip.

Moreover, it is preferable to provide a hot-melt layer between the core layer 1 and the surface layer 2 and between the core layer 1 and the back layer 3, respectively.

In addition, a puff with a band can be manufactured by integrally molding a band attaching portion that serves as an edge for attaching the band. For example, although not shown, such a band attachment portion is provided at any two mutually opposing locations on the periphery of the cosmetic puff 10 (one location and the other location on the extension line of the diameter of a disc-shaped circle). position). By attaching both ends of the band to the band attaching portions, the user can easily handle the cosmetic puff 10 by inserting his or her fingers.

The band attaching portion is made by providing a compression portion on a punching blade of a hot press for punching or a high-frequency welder, which will be described later, and simultaneously pressing them in the punching process.

Next, a cosmetic puff according to a partial modification of the first embodiment will be described. FIG. 2(a) is a perspective view showing a cosmetic puff according to a partial modification of FIG. 1(a). FIG. 2(b) is a schematic diagram showing an image of a cross section viewed from the front direction of FIG. 2(a). FIG. 3 is a schematic diagram showing a cross-sectional image viewed from the front showing a layered state in the manufacturing process of the cosmetic puff of FIG. 2 .

As shown in FIGS. 2(a) and 2(b), a cosmetic puff 11 according to a partial modification of the first embodiment includes a central layer 1 made of polyurethane foam and a cosmetic tool provided on the central layer 1. A surface layer 2 constituting a coating surface, a back layer 3 provided on the opposite side of the surface layer 2 with the central layer 1 interposed therebetween, and between the central layer 1 and the surface layer 2 and between the central layer 1 and the back layer 3 It consists of hot-melt layers 4 and 4 provided respectively between the An edge portion 5 is provided.

Hot-melt films, hot-melt webs, hot-melt powders, etc., such as TPU (thermoplastic polyurethane), polyamide, ethylene-vinyl acetate copolymer, polyolefin resin, polyester, etc., are used as the hot-melt layers 4,4. The configuration and effects other than the hot-melt layers 4, 4 are the same as those of the above-described first embodiment.

(Manufacturing method of cosmetic puff in FIG. 2)
Hot-melt layers 4 and 4 are laminated between the surface layer 2 and the central layer 1, and between the central layer 1 and the back layer 3 to form a laminate having a five-layer structure (shown in FIG. 3). After producing an integrated sheet by hot press processing, a predetermined portion of the integrated sheet where the edge portion 5 is to be formed is stamped at a temperature of 140° C. or higher using a hot press cut or a high frequency welder. By forming the edge portion, the cosmetic puff 11 shown in FIGS. 2(a) and 2(b) can be manufactured.

In the manufacturing method of the cosmetic puff 11, it is preferable to use a polyurethane foam having a thickness of 35 mm or less for the central layer 1 in terms of ease of use and ease of application of cosmetics.

The surface layer 2 can be made of the material described above, for example, a foam sheet made of a rubber elastic material. Synthetic rubber or natural rubber such as latex foam of NBR, SBR, NR, or the like can be used as the rubber elastic material. In particular, NBR is preferable because it is difficult to swell with liquid type cosmetics.

It is preferable that the surface of the foam sheet is smooth and free of burrs, because it has an excellent cosmetic effect. As such a surface, a sliced surface obtained by slicing a foam material into a sheet can be preferably used.

The NBR foam puff is generally manufactured by first making a columnar foam, cutting it into a plate shape, and polishing the edges to form an R surface. However, since the polishing process is performed with a whetstone or the like, there is a problem that fine hangnails are generated on the foam and the skin feels prickly. Also, cutting is done with a die with many Thomson blades arranged, and although the cross section is smooth, it is too slippery for makeup. In addition, as the blade wears, irregularities and streaks occur on the cutting surface, which reduces the cosmetic effect and lowers the commercial value. On the other hand, when sliced, it has fine fluff and feels good on the skin. The curved R surface of the sheet has a good feel against the skin. For this reason, the cosmetic puff of the present invention is preferably sliced and the sheet is curved to form an R surface.

In order to form a foam sheet such as an NBR foam sheet, for example, latex is blended with sulfur, a vulcanization accelerator, a gelling stabilizer, an antibacterial agent, a coloring agent, etc. to obtain a compound, and the compound is added to the compound. , air and a blowing agent are mixed to form a foam, which is injected into a mold, gelled to a solid state, and then vulcanized to obtain a foam comprising a rubber-elastic foam.

In order to improve the weldability of NBR and the like, it is preferable that vulcanization does not proceed completely. In the vulcanization process during foam production, vulcanization does not progress completely, but progresses gradually over several months. For this reason, it is often fused for about three months immediately after manufacturing. It is also possible to use slightly higher vulcanization for sufficient fusion.

As a vulcanization accelerator to be blended, a thiazole-based accelerator such as MZ is preferred, rather than a dithiocarbamic acid-based accelerator such as EZ, because the vulcanization is sweetened. Further, it is preferable to use a combination of a thiazole-based accelerator and a xanthate-based accelerator such as DIX, because processing can be performed for a long period of time (about one year). As such a combination, the MZ/DIX combination can be used.

Moreover, it is preferable that the vulcanizing agent remains. In general, cosmetic foam reacts with trace amounts of copper contained in hot water when washing, etc., and turns brown. of the vulcanization accelerator is decomposed. Foam treated in this way cannot be fused. Therefore, in this embodiment, by using the above-mentioned special vulcanization accelerator, discoloration due to copper is reduced without treatment. In other words, it is possible to provide a cosmetic tool subjected to a heat-sealing process that causes less discoloration due to copper.

If MZ/DIX is used as a vulcanization accelerator, heat-sealing processing is possible, there is no need for decomposition treatment after heat-sealing processing, the process is simple, the cost is low, and yellowing does not occur. Good value too. In addition, since the aforementioned cleaning is not required, the antibacterial agent is not decomposed by the cleaning agent and can maintain its effectiveness, thereby preventing side effects such as reduction of the UV absorber and plasticizer.

As such a vulcanization accelerator, a thiazole-based vulcanization accelerator, a xanthate-based vulcanization accelerator, and a thiourea-based vulcanization accelerator can be used. These can be used alone or in combination. Also, it can be used similarly in other than NBR.

The back layer 3 can be made of the material described above, and is the same as the surface layer 2 described above.

In order to bond and integrate the surfaces of the five-layer structure by hot pressing, for example, it is preferable to use a hot pressing machine, particularly at 70 to 140° C. for 10 to 60 seconds.

Die-cutting is performed by pressing a sheet obtained by integrating the five layers with a hot press machine with a punching blade or a high-frequency welder and cutting it out. In die cutting at 140° C. or higher, it is preferable to set the temperature to 140 to 180° C. for 10 to 120 seconds because rounded edges can be easily obtained without sewing or polishing.

(Second embodiment)
FIG. 4 is a schematic diagram showing a cross-sectional image of the cosmetic puff according to the second embodiment of the present invention, viewed from the front. As shown in FIG. 4, the cosmetic puff 20 of the second embodiment is composed of a base layer 21 and a surface layer 22 provided on the base layer 21 and forming a cosmetic tool application surface.

In the cosmetic puff 20, the base layer 21 is an NBR foam sheet, an SBR foam sheet, a chloroprene rubber foam sheet, an NR foam sheet, a flocked NBR foam sheet, a flocked SBR foam sheet, a flocked chloroprene rubber foam sheet, or a flocked NR foam sheet. is formed from
Moreover, the surface layer 22 is formed from a thermoplastic film. When forming the cosmetic puff 20, it is preferable to bond the surface layer at a temperature higher than the melting point of the film used for the surface layer, because it is possible to apply textures and shapes by pressing the mold.

The cosmetic puff 20 has an overall disk-like shape, but unlike the cosmetic puff 10 of the first embodiment, it has a uniform width (thickness) from the center to the outer periphery. , and the thickness is reduced only in the vicinity of the outer peripheral edge. The thicknesses of the surface layer 22 and the base layer 21 are also the same. The peripheral edge of the cosmetic puff 20 is provided with an edge portion 25 in which the base layer 21 and the surface layer 22 are overlapped and integrated. This edge portion 25 has a rounded shape as in the first embodiment.

Since the cosmetic puff 20 of the present embodiment is configured as described above, it is a high-performance cosmetic puff that has a good surface condition and texture, and feels good on the skin.

According to the cosmetic puff 20 (film-attached puff) of the second embodiment, the following effects are obtained.
(1) Since the film is attached to the base material, dirt can be removed only by washing with water or wiping with tissue paper, and the cosmetic puff itself does not become dirty.
(2) By changing the product number and surface condition of the film, powder, liquid, cream, etc. can be produced according to the application.
(3) It has a rounded edge on its periphery, and does not require polishing during the manufacturing process of the edge.
(4) It can be manufactured with a hot press or a high frequency welder, and is easy to manufacture.

A hot-melt layer is preferably provided between the substrate 21 and the surface layer 22 .

Next, a cosmetic puff according to a partial modification of the second embodiment will be described. FIG. 5(a) is a schematic diagram showing a cross-sectional image of a cosmetic puff according to a partial modification of FIG. 4 as viewed from the front. FIG. 5(b) is a plan view showing the cosmetic puff of FIG. 5(a). FIG. 6(b) is a schematic diagram showing a cross-sectional image viewed from the front showing a layered state in the manufacturing process of the cosmetic puff of FIG.

As shown in FIGS. 5A and 5B, a cosmetic puff 26 according to a partial modification of the second embodiment includes a base layer 21 and a cosmetic tool application surface provided on the base layer 21. and a hot-melt layer 24 provided between the base layer 1 and the surface layer 23, and the surface layer 23, the hot-melt layer 24, and the base layer 21 on the periphery. are provided with an edge portion 25 that overlaps and is integrated.

The surface layer 23 is made of a thermoplastic film. When forming the cosmetic puff 26, hot pressing is performed at a temperature higher than the melting point of the film used for the hot-melt layer 24 and lower than the melting point of the film used for the surface layer 23, without melting the surface film. It is preferable because adhesion becomes possible.

As thermoplastic films, films such as TPU (thermoplastic polyurethane), polyester, polyamide, ethylene-vinyl acetate copolymer, polyvinyl chloride, and polyolefin can be used. Among them, TPU is preferable because it is flexible and feels good on the skin and has a high cosmetic effect. In addition, it has adhesive strength and is highly effective in hot-melt adhesion.

A TPU hot-melt film or the like is used as the hot-melt layer 24 .
The base material layer 21 and other configurations and effects are the same as those of the above-described second embodiment.

(Manufacturing method of cosmetic puff in FIG. 5)
The substrate layer 21, the surface layer 23, and the hot-melt layer 24 between the substrate layer 21 and the surface layer 23 are laminated to form a laminate having a three-layer structure (shown in FIG. 6(b)), After the laminated body is hot-pressed to produce an integrated sheet, a predetermined portion of the integrated sheet where the edge portion 25 is to be formed is molded at a temperature of 140° C. or higher using a hot press cut or a high-frequency welder. The cosmetic puff 26 shown in FIGS. 5(a) and 5(b) can be manufactured by punching to form an edge portion.

When manufacturing the cosmetic puff 26, the materials described above can be used for each layer, and basically the same processing conditions as in the manufacturing method of the cosmetic puff shown in FIG. 2 are applied.
In particular, hot pressing is preferably performed at a temperature higher than the melting point of the film used for the hot-melt layer 24 and lower than the melting point of the film used for the surface layer 23 in that the surface film can be adhered without melting.

Also, in the second embodiment, similarly to the first embodiment described above, a puff with a band can be manufactured by integrally molding a band attaching portion that serves as an edge for attaching the band.

(Third embodiment)
FIG. 7 is a schematic diagram showing a cross-sectional image of the cosmetic puff according to the third embodiment of the present invention, viewed from the front. As shown in FIG. 7, the cosmetic puff 30 of the third embodiment comprises two base layers 31, 31 and a film layer 33 (not shown in FIG. 7) between the layers 31, 31. It is provided with surface film layers 32, 32 made of TPU on both of the two base layers 31, 31, and a hot-melt layer 34 is provided between both base layers 31 and the surface film layer 32. .

One of the two substrate layers 31, 31 is an NBR foam sheet, an SBR foam sheet, a chloroprene rubber foam sheet, an NR foam sheet, a flocked NBR foam sheet, a flocked SBR foam sheet, a flocked chloroprene rubber foam sheet, or flocked. The other layer 31 is made of NR foam sheet, NBR foam sheet, SBR foam sheet, chloroprene rubber foam sheet, NR foam sheet, flocked NBR foam sheet, flocked SBR foam sheet, flocked chloroprene rubber foam sheet, flocked It is made of NR foam sheet, flocked urethane foam sheet, flocked film, or polyurethane synthetic leather.

Moreover, the film layer 33 is formed from a thermoplastic film. The surface film layer 32 is the same as the surface layer 22 in the above-described second embodiment, and is made of a thermoplastic film. The hot-melt layer 34 is also made of a TPU hot-melt film or the like, like the hot-melt layer 24 in the second embodiment.

The cosmetic puff 30 has an overall disk-like shape, but has a constant width (thickness) from the central portion to the outer periphery, and the thickness is reduced only near the outer peripheral edge. The thicknesses of both the surface film layer 32, the hot-melt layer 34 and the substrate layer 31 are also the same. A surface film layer 32, a hot-melt layer 34, a base layer 31, a film layer 33, a base layer 31, a hot-melt layer 34, and a surface film layer 32 are superimposed and integrated on the periphery of the cosmetic puff 30. edge portion 35. This edge portion 35 has a rounded shape. Furthermore, the central portion has a cavity 36 .

(Manufacturing method of cosmetic puff in FIG. 7)
A first base layer 31 made of an NBR foam sheet, an SBR foam sheet, a chloroprene rubber foam sheet, an NR foam sheet, a flocked NBR foam sheet, a flocked SBR foam sheet, a flocked chloroprene rubber foam sheet, or a flocked NR foam sheet; From foam sheet, SBR foam sheet, chloroprene rubber foam sheet, NR foam sheet, flocked NBR foam sheet, flocked SBR foam sheet, flocked chloroprene rubber foam sheet, flocked NR foam sheet, flocked urethane foam sheet, flocked film, or polyurethane synthetic leather A second base layer 31 made of a thermoplastic film, a film layer 33 made of a thermoplastic film between them, and hot-melt layers 34, 34 between the base layer 31 and the film layer 33 on both sides, respectively. After forming a laminate having a layered structure (shown in FIG. 8) and hot-pressing the laminate to produce an integrated sheet, heat pressing is applied only to the portion where the edge portion 35 of the integrated sheet is to be formed. A cosmetic puff 30 shown in FIG. 7 having a hollow portion 36 can be manufactured by cutting or punching at a temperature of 140° C. or higher using a high-frequency welder to form the edge portion 35 .

When manufacturing the cosmetic puff 30, the materials described above can be used for each layer, and basically the same processing conditions as in the manufacturing method of the cosmetic puff shown in FIG. 2 are applied.
In particular, as described above, by sandwiching the hot-melt layer 34 and applying heat only to the edge portion, the edge portion 35 is adhered and the central portion is not adhered, making it possible to insert a finger or an instrument. The thermoplastic film in the cavities can be removed if desired.

The cosmetic puff 30 thus obtained is a finger puff as shown in FIG.
Through the die-cutting process shown in FIG. 10(b), it can be used as the applicator tip of an eye shadow applicator as shown in FIG. 10(a).

Also in the third embodiment, similarly to the first embodiment described above, the band attaching portion, which serves as an edge for attaching the band, can be integrally formed to manufacture a puff with a band.

Example 1: Laminated puff <Preparation of cosmetic tool application surface>
NBR latex (Nipol LX-531B, manufactured by Nippon Zeon Co., Ltd.) 100 parts by weight of sulfur 1.5 parts by weight, vulcanization accelerator MZ 1.0 parts by weight, vulcanization accelerator DIX 0.5 parts by weight, gelation stabilizer ( A formulation was prepared by blending 0.5 parts by weight of Trimene base (manufactured by Addivant Co., USA), 0.1 parts by weight of an antibacterial agent ZPT, and 0.15 parts by weight of a beige colorant.

In a continuous foaming machine, air (outside the parts by weight), 0.7 parts by weight of sodium silicofluoride and 2 parts by weight of zinc oxide were mixed with the mixture and foamed. The resulting foam was injected into a block-shaped mold. Three minutes after injection, the reaction caused the foam to gel and become solid.

This was vulcanized with steam at 100° C. for 80 minutes to obtain an NBR foam having rubber elasticity. This foam had an apparent density of 150 Kg/m ³ and a hardness of 14.8 KPa (50% compressive stress). This foam was sliced to a thickness of 1.5 mm.

<Lamination>
The above NBR foam sheet and polyurethane foam (Tera Venus XFB, apparent density 35 kg/m ³ , thickness 12 mm, manufactured by Yukigaya Chemical Industry Co., Ltd.) core and polyurethane synthetic leather (thickness 0.45 mm, DK & D (Korea)) A TPU hot-melt film (MF50T-CH, thickness 50 μm, melting temperature 95° C., manufactured by Nisshinbo Textile Co., Ltd.) was sandwiched between each sheet of the fabric) to form a five-layer structure as shown in FIG.

<Heat press>
Using a heat press, pressing was performed at 130° C. for 20 seconds to bond the NBR surface, the polyurethane surface, and the polyurethane synthetic leather surface to produce one integrated sheet.

<Die cutting>
A sheet in which the five layers were integrated was pressed with a hot press using a die with a punching blade, and cut out. The shape of the heat press mold was arbitrary, the temperature was 175° C., and the time was 60 seconds. Production of a cosmetic applicator with rounded edges without sewing or polishing because the edges of the 5-layered portion appear to be integrated by applying heat to the edges during die cutting. became possible. A similar effect was also obtained when a high-frequency welder was used in place of the hot press and die-cut under the same conditions.

Example 2: Film-attached puff <Preparation of cosmetic tool application surface>
An NBR foam sheet was produced in the same manner as in Example 1.

<Lamination>
On top of the above NBR foam sheet and TPU hot melt film (MF50T-CH, thickness 50 μm, melting temperature 95 ° C., Nisshinbo Textile Co., Ltd.), another type of TPU film with a different melting temperature (MF30BE-TB, melting temperature 170 ° C., Nisshinbo (manufactured by Textile Co., Ltd.) were laminated to form a three-layer structure as shown in FIG. 5(a).

<Heat press>
Using a heat press, pressing was performed at 130° C. for 20 seconds to adhere the NBR surface and two TPU films to produce one integrated sheet.

<Die cutting>
The sheet in which the three layers were integrated was pressed with a hot press using a die with a punching blade, and cut out. The shape of the hot press mold was arbitrary, the temperature was 165° C., and the time was 80 seconds. Production of a cosmetic applicator with rounded edges without sewing or polishing because the edges of the three-layer overlapped portion appear to be integrated by applying heat to the edges during die cutting. became possible. A similar effect was also obtained when a high-frequency welder was used in place of the hot press and die-cut under the same conditions.
In addition, since the outer film is not softened because it does not reach the melting temperature or higher during the hot pressing and die-cutting processes, it maintains the surface condition and texture derived from the material.

Example 3: Derivatives of puffs with film attached (finger puffs, chips, etc.)
<Creation of makeup tool application surface>
An NBR foam sheet was produced in the same manner as in Example 1.

<Lamination>
A TPU film (MF30T-MX, thickness 30 μm, softening temperature 170° C., melting temperature 180° C., manufactured by Nisshinbo Textile Co., Ltd.) was sandwiched between the two NBR foam sheets to form a total of three layers.

<Die cutting>
A sheet in which the three layers were integrated was pressed with a hot press machine with a punching blade or a high-frequency welder and cut out. The shape of the heat press mold was arbitrary, the temperature was 185° C., and the time was 80 seconds. Production of a cosmetic applicator with rounded edges without sewing or polishing because the edges of the three-layer overlapped portion appear to be integrated by applying heat to the edges during die cutting. became possible. On the other hand, the part of the TPU film surrounded by the NBR sheet that the blade does not touch directly does not reach the melting temperature, so it can be easily cut off later, and the inside is hollow and the edge part A chisel-welded NBR cosmetic applicator could be made.

The present invention is industrially applicable as a high-performance cosmetic puff with good touch on the skin, etc., in which at least a part of a laminated structure using a sheet or film made of a rubber elastic material is bonded and integrated, and a method for manufacturing the same. Possibility.

10, 11: Cosmetic puff (laminated puff)
1: Central layer 2: Surface layer 3: Back layer 4: Hot melt layer 5: Edge portions 20, 26: Cosmetic puff (film-attached puff)
21: base layers 22, 23: surface layer 24: hot melt layer 25: edge portion 30: cosmetic puff (for finger puffs, tips, etc.)
31: base layer 32: surface film layer 33: central film layer 34: hot melt layer 35: edge portion 36: cavity

Claims (17)

Foam sheets molded from latex compounds, foam sheets molded from latex compounds, urethane foam sheets, urethane synthetic leather, or cosmetic puffs punched by heat press or high-frequency welder,
Equipped with an edge part in which each layer is overlapped and integrated on the periphery,
A cosmetic puff, wherein the vicinity of the edge portion has a rounded shape. 2. The cosmetic puff according to claim 1, further comprising a core layer of urethane foam between said foam sheet and said foam sheet, urethane foam sheet or urethane synthetic leather. 3. The cosmetic puff according to claim 2, wherein said foam sheet, urethane foam sheet or urethane synthetic leather and the center layer of urethane foam are adhered. 2. A cosmetic puff according to claim 1, comprising said foam sheet and a surface film layer. 2. A cosmetic puff according to claim 1, wherein said foam sheet comprises two layers and has a hollow center. 6. A cosmetic puff according to claim 5, wherein said cavity is exposed to the outside so that a finger can be inserted therein. 7. The cosmetic puff according to claim 5, wherein a film is laminated between said foam sheets and molded. 8. The cosmetic puff according to any one of claims 4 and 5 to 7, wherein a surface film layer is provided on the outside of said foam sheet. 9. The cosmetic puff according to claim 4 or 8, wherein said surface film layer has grains. 10. A cosmetic puff according to any one of claims 4, 8 and 9, characterized in that there is an adhesive between said foam sheet and said surface film. 11. The cosmetic puff according to any one of claims 1 to 10, wherein the cosmetic puff is less discolored by copper when washed with hot water. The foam sheet is a foam sheet selected from an NBR foam sheet, an SBR foam sheet, a chloroprene rubber foam sheet, an NR foam sheet, a flocked NBR foam sheet, a flocked SBR foam sheet, a flocked chloroprene rubber foam sheet, or a flocked NR foam sheet. A cosmetic puff according to any one of claims 1 to 11, characterized in that: The cosmetic puff according to any one of Claims 1 to 12, wherein the foam sheet is an NBR foam sheet or a flocked NBR foam sheet, and is less likely to swell with liquid foundation. The vulcanization accelerator blended in the latex composition for molding the foam sheet is selected from thiazole-based vulcanization accelerators, xanthate-based vulcanization accelerators, thiourea-based vulcanization accelerators, or combinations thereof. The cosmetic puff according to any one of claims 1 to 13, characterized in that: 15. A cosmetic puff according to any one of the preceding claims, characterized in that an antimicrobial agent is included in the foam sheet. 16. The cosmetic puff according to any one of claims 1 to 15, wherein said foam sheet is a sheet sliced by a slicing process. An eyeshadow applicator utilizing the cosmetic puff according to any one of claims 1 to 16.

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