WO2015072021A1

WO2015072021A1 - Patch for covering lip cosmetic, use thereof and process for manufacturing same

Info

Publication number: WO2015072021A1
Application number: PCT/JP2013/080940
Authority: WO
Inventors: 石倉庸子; 白川理恵; 山本昌徳; 草川直美; 岡宗清; 宮本國寛
Original assignee: ニチバン株式会社; 日本メナード化粧品株式会社
Priority date: 2013-11-15
Filing date: 2013-11-15
Publication date: 2015-05-21

Abstract

A patch for covering a lip cosmetic, provided with a substrate layer (preferably having a thickness of 1 to 13μm), a pressure-sensitive adhesive layer (preferably having a thickness of 3 to 23μm), a separator layer and, as necessary, a carrier layer; use of a patch for covering a lip cosmetic by applying the patch so as to cover 40 to 120% of the area of an upper lip and/or a lower lip; and a process for manufacturing a patch for covering a lip cosmetic, including a step for applying a pressure-sensitive adhesive to the upper surface of a separator layer and thus forming a pressure-sensitive adhesive layer.

Description

Mouth covering material for lip cosmetic cover, use thereof and method for producing the same

The present invention relates to a patch for covering lip cosmetics such as lipsticks, and in particular, means a lip coated with lip cosmetics such as lipstick (one or both of upper lip and lower lip. Hereinafter, simply referred to as “lips”). In addition to improving the sustainability of the makeup effect of lip cosmetics such as lipsticks, and suppressing adhesion (color transfer) and color bleeding to coffee cups and other dishes, The present invention relates to a lip cosmetic cover patch having excellent usability.

Lip cosmetics represented by lipstick and lip gloss have a cosmetic effect by imparting color to the lips. In recent years, lip cosmetics such as lipsticks are required to have various effects and functions in addition to the effect of imparting color to the lips. For example, in order to make the lips look more three-dimensional, to produce a fresh finish, a high gloss feeling is required, and since the lips are three-dimensional and intensely moving parts, a makeup lasting effect is required, Various techniques have been studied. Also, since the lips are very sensitive parts, it is also required to improve the feeling of use such as lightness and comfort when applied, and lip cosmetics emphasize the balance between functional and functional aspects.

Lip cosmetics such as lip balm (sometimes called lip balm) applied to the lips to prevent dryness and moisturize the lips and also to treat stomatitis are also used in lip cosmetics. There is also an emphasis on both functional and functional aspects.

Lip cosmetics such as lipsticks are available in solid, ointment, paste, cream, gel and liquid forms, oily ingredients (wax, petrolatum, oils, etc.), powders (pigments, pigments) Etc.), surfactants, aqueous components (glycols, glycerin, etc.), fibers, UV absorbers, anti-fading agents, antioxidants, antifoaming agents, cosmetic ingredients, preservatives, fragrances and the like.

Lip cosmetics such as lipsticks maintain good gloss (gloss) for a long time after being applied to the lips, and are prevented from adhering to tableware (color transfer or transferability), causing color bleeding, dripping or stickiness. What has the outstanding feeling of use, such as being difficult, is calculated | required.

Therefore, conventionally, an overcoat that covers lip cosmetics has been applied to the surface of lip cosmetics such as lipsticks to improve the lipstick makeup effect and improve gloss. The “cover” means to cover the surface of a certain object, specifically a lip cosmetic or the like (hereinafter, having the same meaning in this specification). As an overcoat that is applied to the surface of a lipstick or the like to cover lip cosmetics, Patent Document 1 discloses a lip overcoat containing an ethanol solution of a polymer compound, a polyhydric alcohol, and methylphenylpolysiloxane. It is described that the vaporization rate is reduced to suppress alcohol irritation, and the water resistance and adhesion of the coating film, gloss, and flexibility of the coating film are improved. Further, Patent Document 2 discloses a lipstick overcoat containing a specific perfluoropolyether and silica powder and / or alumina powder, which improves the durability of the makeup effect of lipstick (lip cosmetics) and improves lipstick. It is described that the adhesion to the tableware and the like can be suppressed, and that the effect appears immediately after application and the outline of the lipstick becomes unclear over time, so-called color bleeding is suppressed. Furthermore, Patent Document 3 discloses a lipstick coating transfer sheet in which a lipstick coating layer containing a fluorine compound-based oil agent is provided on a base sheet, and the lipstick coating agent is applied to a finger or lip brush for lipstick. There is no need to apply on the (lip cosmetic), the lip coat layer side of the transfer sheet is applied to the surface of the lip coated with lipstick (lip cosmetic), and lightly pressed from the base sheet with a finger, the lip coat layer Is transferred to the surface of the lips and the substrate sheet is peeled off.

Patent Documents 4 and 5 disclose sheet-type lipsticks that can apply lip cosmetics such as lipstick to lips without using a finger or an applicator. These are applied using a lipstick (lip cosmetic) that has been coated on the coating sheet in the shape of a lip, pressing the lipstick's printed surface against the lips and transferring the lipstick to the lips, then peeling the coating sheet To do. Similarly, a lip cosmetic overcoat called a lip tattoo seal or a lip sticker for applying a tattoo pattern or the like to the surface of a lip cosmetic such as lipstick by transfer is also known.

However, conventional lip cosmetic overcoats applied to the surface of lip cosmetics such as lipsticks are not sufficient to prevent adhesion (color transfer) of lip cosmetics such as lipsticks to dishes, etc. The persistence of the cosmetic overcoat was not sufficient. If you try to improve the function of preventing color transfer such as lipstick or to increase the durability of the lip cosmetic overcoat, uneven coating of the overcoat may occur, the feeling of use may become sticky, or the lips may feel uncomfortable. The problem often occurred. Also, in some cases, after applying the lip cosmetic overcoat and before drying, the surface tension is so low that it drips from the application part and enters the mouth or spreads to the lower jaw Sometimes occurred. Therefore, it is possible to suppress the color transfer of lip cosmetics such as lipsticks, improve the sustainability of the makeup effect of lip cosmetics such as lipsticks, and a method for covering lip cosmetics such as lipsticks that are excellent in usability and the like Means were desired.

JP-B 61-12883 Japanese Patent Laid-Open No. 5-221829 JP 7-196441 A Japanese Patent Laid-Open No. 3-80807 JP 2008-29522 A

It is an object of the present invention to suppress the color transfer of lip cosmetics such as lipsticks, improve the sustainability of the makeup effect of lip cosmetics such as lipsticks, and to cover lip cosmetics such as lipsticks that are excellent in usability It is to provide a method and its means.

As a result of diligent research on solving the above-mentioned problems, the present inventors solved the above-mentioned problems by applying a patch material with a specific layer structure to the surface of lip cosmetics such as lipsticks applied to the lips. The present invention has been completed by finding out what can be done.

That is, according to the present invention, there is provided a patch material for a lip cosmetic cover comprising a support layer, an adhesive layer and a separator layer laminated in this order.

Further, according to the present invention, as an embodiment, the following (1) to (22) lip cosmetic cover patch is provided.
(1) The lip as described above, wherein the thickness of the support layer is in the range of 1 to 35 μm, the thickness of the pressure-sensitive adhesive layer is in the range of 1 to 35 μm, and the total thickness of the support layer and the pressure-sensitive adhesive layer is in the range of 2 to 70 μm. Cosmetic cover patch.
(2) The lip as described above, wherein the thickness of the support layer is in the range of 1 to 13 μm, the thickness of the adhesive layer is in the range of 3 to 23 μm, and the total thickness of the support layer and the adhesive layer is in the range of 4 to 36 μm. Cosmetic cover patch.
(3) The adhesive material for a lip cosmetic cover as described above, wherein the adhesive strength to the bakelite plate after applying the lip balm (after 20 minutes of pressure bonding) is in the range of 0.03 to 1.2 N / 15 mm.
(4) The above lip cosmetic cover patch, wherein the probe tack is in the range of 0.2 to 3 N / 5 mmφ.
(5) The lip cosmetic cover described above, wherein the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer contains at least one selected from the group consisting of an acrylic pressure-sensitive adhesive, a rubber-based pressure-sensitive adhesive, a urethane-based pressure-sensitive adhesive, and a silicone-based pressure-sensitive adhesive. Adhesive material.
(6) The patch for a lip cosmetic cover, wherein the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer contains a (meth) acrylic acid alkyl ester copolymer.
(7) The pressure-sensitive adhesive forming the pressure-sensitive adhesive layer is
a) (meth) acrylic acid alkyl ester having an alkyl group having 8 to 12 carbon atoms, 50 to 99% by mass, and b) other vinyl monomers copolymerizable with the (meth) acrylic acid alkyl ester 1 to 50 The total of the (meth) acrylic acid alkyl ester copolymer consisting of mass% (provided that a) and b) are 100 mass%. The lip cosmetic cover patch, which is an acrylic pressure-sensitive adhesive containing
(8) The patch for a lip cosmetic cover, wherein the other vinyl monomer copolymerizable with the (meth) acrylic acid alkyl ester is a vinyl monomer having a functional group.
(9) The adhesive material for a lip cosmetic cover, wherein the support layer is formed of a polyurethane elastomer.
(10) The adhesive material for a lip cosmetic cover, wherein the surface of the support layer opposite to the pressure-sensitive adhesive layer is matted.
(11) The adhesive material for a lip cosmetic cover described above, wherein printing is applied to at least one surface of the support layer facing the pressure-sensitive adhesive layer or the surface of the support layer opposite to the pressure-sensitive adhesive layer.
(12) The lip cosmetic cover patch, wherein the support layer is a transparent layer.
(13) The adhesive material for a lip cosmetic cover, wherein the support layer is a pattern layer.
(14) The adhesive material for a lip cosmetic cover, wherein the pattern layer is subjected to pattern printing.
(15) The patch for a lip cosmetic cover, wherein the pattern layer contains a pigment.
(16) The adhesive material for a lip cosmetic cover as described above, wherein the area of the separator layer is larger than the area of the support layer.
(17) A plurality of laminates including a support layer and an adhesive layer adjacent to each other are arranged in parallel on at least one surface of one separator layer so that the adhesive layer faces the separator layer. The aforementioned adhesive material for a lip cosmetic cover.
(18) The lip cosmetic cover patch, comprising a carrier layer on a surface of the support layer opposite to the pressure-sensitive adhesive layer.
(19) The adhesive material for a lip cosmetic cover, wherein the carrier layer has one or more slits.
(20) The adhesive material for lip cosmetic cover, wherein the carrier layer has a slit in a direction orthogonal to the longitudinal direction of the adhesive material for lip cosmetic cover.
(21) The adhesive material for a lip cosmetic cover as described above, wherein the area of the carrier layer is larger than the area of the support layer.
(22) The adhesive material for a lip cosmetic cover as described above, wherein the support layer has a shape selected from the group consisting of a lip shape, an oval shape, and a crescent shape.

Furthermore, according to the present invention, there is provided use of the above-mentioned adhesive material for lip cosmetic cover, which is applied so as to cover 40 to 120% of the area of at least one of the upper lip and the lower lip.

In addition, according to the present invention, use of the patch for a lip cosmetic cover as described below in (A) to (C) is provided as an embodiment.
(A) The lip cosmetic is a lip cosmetic, lipstick, lip gloss, lip crayon, lip liner, lip balm, lip balm, lip treatment or lip overcoat selected from the above lip cosmetic cover patch use.
(B) The use of the above lip cosmetic cover patch, wherein the lip cosmetic is selected from the group consisting of solid, ointment, paste, cream, gel and liquid.
(C) Use of the above-mentioned adhesive material for a lip cosmetic cover used in a two-sheet set for upper lip and lower lip.

In addition, according to the present invention, there is provided the above-mentioned method for producing a lip cosmetic cover patch comprising the step of forming a pressure-sensitive adhesive layer by applying a pressure-sensitive adhesive to the upper surface of the separator layer, preferably further comprising a carrier. There is provided the above-mentioned method for producing a lip cosmetic cover patch comprising the step of forming a support layer on the upper surface of a layer by a solution casting method.

According to the present invention, it is a patch material for a lip cosmetic cover characterized by comprising a support layer, an adhesive layer and a separator layer laminated in this order, thereby transferring the color transfer of lip cosmetics such as lipsticks. It is possible to improve the sustainability of the makeup effect of lip cosmetics such as lipsticks, and to provide a cover means for lip cosmetics such as lipsticks that is excellent in usability.

Further, according to the present invention, by using the above-mentioned adhesive material for lip cosmetic cover, which is applied so as to cover 40 to 120% of the area of at least one of the upper lip and the lower lip, It is possible to improve the sustainability of the makeup effect of lip cosmetics such as lipsticks, and to provide a method for covering lip cosmetics such as lipsticks that is excellent in usability.

Furthermore, according to the present invention, the method for producing the adhesive material for a lip cosmetic cover, preferably including the step of forming an adhesive layer by applying an adhesive on the upper surface of the separator layer, preferably further on the upper surface of the carrier layer. The method for producing a patch for a lip cosmetic cover, which comprises the step of forming a support layer by a solution casting method, thereby suppressing the color transfer of the lip cosmetic such as lipstick, and the makeup of the lip cosmetic such as lipstick. There is an effect that the sustainability of the effect can be improved, and a covering means for lip cosmetics such as lipsticks that is excellent in usability can be easily provided.

More specifically, according to the present invention, unlike the conventional lip cosmetic overcoat, the lip cosmetic cover adhesive material having a specific layer structure is used to adhere closely to the lip coated with lipstick or the like. In addition to being able to suppress the color transfer of lip cosmetics such as lipsticks to tableware etc. Therefore, there is an effect that it is easy to carry around.

It is a schematic diagram of a patch for a lip cosmetic cover having a lip shape used in a set of two for upper lip and lower lip. It is a schematic diagram of the patch for a lip cosmetic cover having an oval shape. It is a schematic diagram of a patch for a lip cosmetic cover having a crescent shape.

I. Lip Cosmetics The lip cosmetic cover patch of the present invention has a function of covering (covering) lip cosmetics by being applied to the surface of the lip cosmetic applied to the lips. Lip cosmetics applied to the lips include conventionally used lip cosmetics such as lipsticks, and are not particularly limited. Examples thereof include lip cosmetics selected from the group consisting of lipsticks, lipsticks, lip glosses, lip crayons, lip liners, lip balms, lip balms, lip treatments, and lip overcoats. That is, for any lip cosmetics such as lipsticks, lip glosses, lip crayons, lip liners, etc., which are usually colored, and lip cosmetics such as lip balm, lip balm, lip treatment, etc. Can be applied. From the viewpoint that the effect of suppressing the color transfer of lip cosmetics to tableware or the like over a long period of time is remarkable, lip cosmetics and lip glosses are particularly preferable.

Furthermore, as described above, the adhesive material for a lip cosmetic cover according to the present invention is a lip cosmetic overcoat that has been conventionally applied to the surface of a lip cosmetic such as lipstick, that is, a lip overcoat. It can be used by sticking to the surface of Therefore, the lip cosmetic overcoat (lip overcoat) is included in the lip cosmetic covered with the lip cosmetic cover patch of the present invention.

The dosage form of the lip cosmetic to which the adhesive material for lip cosmetic cover of the present invention is applied is not particularly limited as long as it is a conventional lip cosmetic composition such as lipstick. For example, a dosage form selected from the group consisting of solid, ointment, paste, cream, gel, and liquid can be mentioned. From the viewpoint that the effect of suppressing the color transfer of lip cosmetics to tableware or the like over a long period of time is remarkable, a particularly preferable lip cosmetic dosage form is a solid form.

II. The lip cosmetic cover patch The lip cosmetic cover patch of the present invention is a lip cosmetic cover patch comprising a support layer, an adhesive layer and a separator layer laminated in this order. . If desired, the above lip cosmetic cover patch is provided with a carrier layer on the surface of the support layer opposite to the pressure-sensitive adhesive layer (hereinafter sometimes referred to as “surface of the support layer”).

1. Support Layer The support layer provided in the lip cosmetic cover patch of the present invention can be made of a material conventionally used as a support layer of the patch, and is not particularly limited. It is preferable to use a material of a flexible material that can adhere to the lip and can follow the movement of the lips.

[Material of support layer]
Specific examples of the material for forming the support layer include polyolefins such as polyethylene and polypropylene; polyesters such as polyethylene terephthalate (hereinafter sometimes referred to as “PET”), polybutylene terephthalate and polyethylene naphthalate; polystyrene; nylon 6 Polyamide such as nylon 66, MXD6; polyvinyl alcohol; ethylene-vinyl acetate copolymer; polyurethane such as acrylic polyurethane, polyester type polyurethane, polyether type polyurethane (polyurethane elastomer may be used); styrene-isoprene-styrene copolymer Synthetic rubbers such as polymers, styrene-butadiene-styrene copolymers, styrene-ethylene-propylene-styrene copolymers, styrene-butadiene rubbers; And, cotton, acetate rayon, rayon, rayon / polyethylene terephthalate composite, such as cellophane. The support layer is formed by molding these materials, if desired, containing various additives, specifically, organic additives (or resins) or inorganic additives such as pigments. A single layer or a laminate of coated films can be used. Moreover, as a film, an unstretched film, a uniaxially stretched film, a biaxially stretched film, etc. can also be selected.

Specific examples of additives that can be optionally contained in the material forming the support layer include various additives such as colorants such as pigments and dyes, stabilizers, ultraviolet absorbers, and lubricants. The content of these additives may be selected in an optimum range depending on the kind of the additive, but is usually 0.001 to 30% by mass, preferably 0.01 to 25% by mass, more preferably in the support layer. Is often in the range of 0.1 to 20% by mass.

From the viewpoint of adhesion to the lips, followability, moisture permeability, and the like, the support layer is preferably formed from polyurethane such as acrylic polyurethane, polyester polyurethane, polyether polyurethane, and particularly polyurethane elastomer. . As the polyurethane elastomer suitable for the support layer provided in the adhesive material for lip cosmetic cover of the present invention, commercially available products such as Luck Skin (registered trademark) US2268 (polyether type), Lack Skin U-1223 manufactured by Seiko Kasei Co., Ltd. are available. , U-1285, and U-2860 (polyester type), but are not limited thereto. These polyurethane elastomers can be used alone or in combination of two or more.

[Thickness of support layer]
The thickness of the support layer is not particularly limited, but is preferably in the range of 1 to 35 μm, more preferably 1 to 25 μm, still more preferably 1 to 15 μm, from the viewpoint of adhesion to the lips, followability, and the like. Particularly preferred is a range of 1 to 13 μm, and most preferred is a range of 1 to 6 μm. When the thickness of the support layer is from 1 to 13 μm, and even as thin as 1 to 6 μm, it is extremely difficult to notice and feel uncomfortable during the application of the lip cosmetic cover patch. It can be. When the thickness of the support layer is less than 1 μm, the strength as the support layer becomes insufficient, and the support is used when the adhesive material for lip cosmetic cover is applied to the lips or when the adhesive material is peeled off from the lips. The layer may be cut off, and the production of the support layer (film formation, etc.) may be difficult. If the thickness of the support layer is too large, even if the overall thickness of the lip cosmetic cover patch is made as thin as possible, the patch is difficult to adhere along the surface of the lips with fine irregularities, and the applied state is conspicuous. It tends to be easier and the sense of incongruity tends to increase. The thickness of the support layer provided in the lip cosmetic cover patch can be measured using a dial thickness gauge (average value of n = 3). The adhesive layer, separator layer, and carrier described in detail later. The same applies to the thickness of the layer.

[Surface of support layer]
The surface of the support layer (the surface of the support layer opposite to the pressure-sensitive adhesive layer) is preferably glossy to give gloss to the lip cosmetic, but the touch and slip of the lip cosmetic cover patch In order to improve properties, appearance, etc., it may be preferable that the surface of the support layer is matted. Since the surface of the support layer is matted to form minute irregularities, the dynamic friction coefficient of the support layer can be reduced to less than 1.0. If minute irregularities are formed on the surface of the carrier layer by embossing or the like, and the support layer is formed on the minute irregular surface, the minute irregularities are transferred to the surface of the formed support layer. Can be matted.

Further, the support layer may be subjected to a treatment such as a sandblast treatment or a corona treatment on one side or both sides for the purpose of improving the anchoring property with the adhesive layer. For the purpose of improving the handleability of the patch, irregularities can be provided on one side or both sides of the support layer by a method other than sandblasting.

〔printing〕
In order to improve the appearance of the lip cosmetic cover adhesive and improve the cosmetic effect, the surface of the support layer facing the adhesive layer or the surface of the support layer opposite to the adhesive layer (the support layer Printing can be performed on at least one surface of the surface. The printing applied to the support layer is not particularly limited. For example, the appearance of the lips can be made vivid by performing lipstick printing such as pink or red. In addition, multicolor printing, gradation printing, pattern printing to form a pattern, etc., glossy printing such as pearl and lame using ink containing additives such as pigments (collectively these are “wide pattern printing” Or the like can be selected as appropriate.

[Support layer which is a transparent layer]
In the patch for lip cosmetic cover of the present invention, the support layer may be a transparent layer or an opaque layer, but it is often preferable that the support layer is a transparent layer. That is, since the support layer is a transparent layer, the color and pattern of lip cosmetics such as lipsticks previously applied to the lips, the printing color, gloss and pattern that are applied to the support layer can be visually recognized. The cosmetic effect can be improved, and the lip cosmetic cover patch can be made inconspicuous.

[Support layer as pattern layer]
In the patch for a lip cosmetic cover of the present invention, the support layer may be a pattern layer. The support layer that is the pattern layer may be a pattern layer that has been subjected to the pattern printing described above (meaning pattern printing in a broad sense) or may be added to a material such as a synthetic resin that forms the support layer. A patterned layer having a pigment containing a pigment as a product may also be used.

[Shape and size of support layer]
The shape and size of the support layer can be appropriately determined in consideration of the shape and size of the lip cosmetic cover patch, and are not particularly limited. The adhesive material for a lip cosmetic cover of the present invention comprises a support layer, an adhesive layer and a separator layer, and optionally a carrier layer. The lip to which the lip cosmetic has been previously applied is provided with an adhesive layer and a support. Since the laminate comprising the layers is affixed and left on the surface of the lip, the shape and size of the support layer may be the whole or a desired part of the lip to which the lip cosmetic has been applied in advance. It has a shape and size that covers the surface. Therefore, the adhesive material for a lip cosmetic cover of the present invention includes, for example, one in which the support layer has a shape selected from the group consisting of a lip shape, an oval shape, and a crescent shape. The lip cosmetic cover cover is applied so that the area covered by the lip cosmetic cover patch is 40 to 120%, preferably 50 to 100%, of the area of the lip (at least one of the upper lip and the lower lip). The material can be used.

2. The pressure-sensitive adhesive layer The pressure-sensitive adhesive forming the pressure-sensitive adhesive layer provided in the patch for a lip cosmetic cover of the present invention can conventionally use a pressure-sensitive adhesive that forms the pressure-sensitive adhesive layer of the patch, and is not particularly limited. Adhesives that have adhesiveness when pressed with fingers at normal temperature or body temperature, have weak skin irritation, adhere to the lips for a long time following the movement of the lips, and are preferably used with less discomfort during application . Specifically, the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer preferably contains at least one selected from the group consisting of acrylic pressure-sensitive adhesives, rubber-based pressure-sensitive adhesives, urethane-based pressure-sensitive adhesives, and silicone-based pressure-sensitive adhesives, These pressure-sensitive adhesives can be mixed with a plurality of pressure-sensitive adhesives. The pressure-sensitive adhesive forming the pressure-sensitive adhesive layer is more preferably an acrylic pressure-sensitive adhesive. The pressure-sensitive adhesive layer may be formed as a single pressure-sensitive adhesive layer or may be formed by laminating a plurality of pressure-sensitive adhesive layers. In the case where a plurality of pressure-sensitive adhesive layers are laminated, a plurality of different types of pressure-sensitive adhesive layers can be laminated.

[Acrylic adhesive]
As the acrylic pressure-sensitive adhesive, for example, a homopolymer or copolymer of (meth) acrylic acid alkyl ester monomers such as butyl acrylate, 2-ethylhexyl acrylate, and isononyl acrylate, or (meth) acrylic acid alkyl ester monomers are mainly used. An acrylic copolymer obtained by copolymerizing at least one other copolymerizable monomer such as (meth) acrylic acid, vinyl acetate, styrene, vinyl pyrrolidone, acrylamide, hydroxyethyl acrylate, hydroxypropyl acrylate, etc. as a component A pressure-sensitive adhesive containing Note that “(meth) acrylic acid” is a generic term for “methacrylic acid” and “acrylic acid” as is well known. ].

[(Meth) acrylic acid alkyl ester copolymer]
The acrylic pressure-sensitive adhesive forming the pressure-sensitive adhesive layer contains a (meth) acrylic acid alkyl ester copolymer formed from (meth) acrylic acid alkyl ester which is an esterified product of aliphatic alcohol and (meth) acrylic acid. More preferred are adhesives.

Particularly preferably as the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer,
a) (meth) acrylic acid alkyl ester having an alkyl group having 8 to 12 carbon atoms, 50 to 99% by mass, and b) other vinyl monomers copolymerizable with the (meth) acrylic acid alkyl ester 1 to 50 The total of the (meth) acrylic acid alkyl ester copolymer consisting of mass% (provided that a) and b) are 100 mass%. An acrylic pressure-sensitive adhesive containing The acrylic adhesive may be a non-aqueous acrylic adhesive. In the present invention, “non-aqueous” means a pressure-sensitive adhesive that forms a pressure-sensitive adhesive layer when a patch comprising a support layer, a pressure-sensitive adhesive layer, and a separator layer laminated in this order is obtained through a manufacturing process. Means that it is substantially free of water. Therefore, the “non-aqueous acrylic pressure-sensitive adhesive” in the present invention means that the acrylic pressure-sensitive adhesive that forms the pressure-sensitive adhesive layer when the patch is obtained through the manufacturing process is in a non-water-containing state, that is, substantially As long as the adhesive layer of the patch is exposed to the air and naturally absorbs moisture, the acrylic adhesive that forms the adhesive layer may be used. It does not mean that it contains no water at all. As the non-aqueous solvent contained in the non-aqueous acrylic pressure-sensitive adhesive, there can be used a solvent used when a (meth) acrylic acid alkyl ester copolymer is produced by a solution polymerization method.

a) (Meth) acrylic acid alkyl ester having an alkyl group having 8 to 12 carbon atoms includes n-octyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, isooctyl (meth) acrylate, (meth) Examples include isononyl acrylate, n-decyl (meth) acrylate, isodecyl (meth) acrylate, lauryl (meth) acrylate, and the like. Among these (meth) acrylic acid alkyl esters, acrylic acid alkyl esters having an alkyl group of 8 to 9 carbon atoms such as 2-ethylhexyl acrylate and isononyl acrylate are particularly preferable. These alkyl (meth) acrylates can be used alone or in combination of two or more. a) The content of the (meth) acrylic acid alkyl ester having an alkyl group having 8 to 12 carbon atoms in the copolymer is 50 to 99% by mass, preferably 55 to 98.7% by mass, more preferably 60 to It is 98.5 mass%.

b) The other vinyl monomer copolymerizable with the (meth) acrylic acid alkyl ester does not belong to the above-described a) (meth) acrylic acid alkyl ester having an alkyl group having 8 to 12 carbon atoms. , A monomer having a vinyl group, and at least a) a vinyl monomer copolymerizable with a (meth) acrylic acid alkyl ester having an alkyl group having 8 to 12 carbon atoms.

B) Other vinyl monomers copolymerizable with the above (meth) acrylic acid alkyl ester [hereinafter referred to as “b) other vinyl monomers”. ] A) a vinyl monomer copolymerizable with a (meth) acrylic acid alkyl ester having an alkyl group having 8 to 12 carbon atoms, other than the (meth) acrylic acid alkyl ester of a) As long as it is a vinyl monomer, although there is no particular limitation, carboxyl group-containing vinyl monomers such as acrylic acid, methacrylic acid, maleic acid, maleic anhydride, itaconic acid and their derivatives (acid anhydrides); acrylamide, Amide group-containing vinyl monomers such as methacrylamide and N-methylolacrylamide and derivatives thereof; Epoxy group-containing vinyl monomers such as glycidyl acrylate and glycidyl methacrylate; 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, glycerin Monoacrylate, glycerin monomethacrylate, polyethylene Hydroxyl group-containing vinyl monomers such as coal monoacrylate, polyethylene glycol monomethacrylate, polypropylene glycol acrylate, polypropylene glycol methacrylate; N, N-dimethylaminoethyl acrylate, N, N-dimethylaminoethyl methacrylate, N, N-dimethylamino Amino group-containing vinyl monomers such as propylacrylamide and quaternized salts thereof; cyano group-containing vinyl monomers such as acrylonitrile and methacrylonitrile (unsaturated nitriles); 2-methoxyethyl acrylate, 2-methoxy methacrylate (Meth) acrylic acid alkoxyalkyl esters such as ethyl, 2-ethoxyethyl acrylate, 2-butoxyethyl acrylate, methoxypolyethylene glycol monoacrylate, methoxy Alkoxy group-containing vinyl monomers such as polyethylene glycol monomethacrylate, vinyl aromatic compounds such as styrene; vinyl esters such as vinyl acetate and the like, may be used in combination.

As the other vinyl monomer of b), a vinyl monomer having a functional group such as a carboxyl group, an acid anhydride group, an amide group, an epoxy group, a hydroxyl group or an amino group; an alkoxy group-containing vinyl monomer And a vinyl ester; more preferably, a carboxyl group-containing vinyl monomer; a hydroxyl group-containing vinyl monomer; an alkoxy group-containing vinyl monomer; and a vinyl ester. Particularly preferred are 2-methoxyethyl acrylate, acrylic acid, polypropylene glycol acrylate, methoxypolyethylene glycol monoacrylate or vinyl acetate, and these may be used in combination.

As other vinyl monomer of b), b1) (meth) acrylic acid alkyl ester having an alkyl group having 1 to 6 carbon atoms, methyl (meth) acrylate, ethyl (meth) acrylate, N-butyl (meth) acrylate, isobutyl (meth) acrylate, t-butyl (meth) acrylate, n-hexyl (meth) acrylate, and the like may be used in combination, preferably Methyl acrylate or n-butyl acrylate. In addition, as the other vinyl monomer of b), (meth) acryl having an alkyl group having 7 or 13 carbon atoms such as pentyl acrylate, pentyl methacrylate, tridecyl acrylate, tridecyl methacrylate, tetradecyl acrylate, etc. Acid alkyl esters can also be used.

The content of the other vinyl monomer of b) is 1 to 50% by mass, preferably 1.3 to 45% by mass, more preferably 1.5 to 40% by mass in the copolymer. The adhesive for forming a lip cosmetic cover according to the present invention is a total of acrylic copolymers in which the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer contains a predetermined amount of the other vinyl monomer of b) (however, a) and b) Is 100% by mass. ], The various properties of the pressure-sensitive adhesive layer can be improved, and a patch for a lip cosmetic cover excellent in handleability can be obtained. The content of b1) in the case of containing b1) a (meth) acrylic acid alkyl ester having an alkyl group having 1 to 6 carbon atoms as the other vinyl monomer of b) is 14 in the copolymer. It is preferable to set it as mass% or less, More preferably, it is 13 mass% or less, More preferably, it is 12 mass% or less.

〔Additive〕
The acrylic pressure-sensitive adhesive forming the pressure-sensitive adhesive layer can contain various additives as required in addition to the polymer component including the (meth) acrylic acid alkyl ester copolymer. As an additive, a cross-linking agent, a filler, an antioxidant (antioxidant, preservative), a colorant, a fragrance, a tackifier, a plasticizer, an oil adsorbent, and the like are formed on the adhesive layer included in the patch. Additives commonly used in pressure-sensitive adhesives can be contained. For example, a tackifier can be blended in order to adjust the adhesive properties of the adhesive. Examples of the tackifier include tackifier resins such as terpene, terpene phenol, coumarone indene, styrene, rosin, xylene, phenol, and petroleum. Also, by blending an oil adsorbent, the oil component contained in the lip cosmetic is absorbed by the oil adsorbent in the adhesive layer, and the cohesive strength of the adhesive layer can be maintained even after being applied for a long time. . Oil adsorbents include water-swellable clay minerals such as magnesium silicate and aluminum silicate; plant powder; vinyl acetate, N-vinylpyrrolidone, 2,4-diamino-6-phenyl-1,3,5-triazine Spherical porous resin powders formed from (meth) acrylic acid esters, etc .; hydroxyapatite-coated inorganic spherical powders; porous powders such as crystalline cellulose and calcium carbonate;

[Crosslinking agent]
For acrylic pressure-sensitive adhesives that form a pressure-sensitive adhesive layer, crosslinking treatment is not essential, but if the pressure-sensitive adhesive that forms the pressure-sensitive adhesive layer is desired to have appropriate cohesiveness, it contains a crosslinking agent as required. You may let them. Cross-linking agents include polyfunctional isocyanate compounds [tolylene diisocyanate (TDI), 4,4'-diphenylmethane diisocyanate (MDI), hexamethylene diisocyanate, xylylene diisocyanate, metaxylylene diisocyanate, 1,5-naphthalene diisocyanate, hydrogenation Diphenylmethane diisocyanate, hydrogenated tolylene diisocyanate, hydrogenated xylylene diisocyanate, isophorone diisocyanate, etc.) and polyfunctional epoxy compounds, metal chelate compounds (such as Nursemu Aluminum manufactured by Nippon Chemical Industry Co., Ltd.), etc. For example, Coronate (registered trademark) HL, Coronate L, Coronate EH manufactured by Nippon Polyurethane Industry Co., Ltd., TETRAD (registered trademark) manufactured by Mitsubishi Gas Chemical Company, Inc. It can be obtained as such. When the acrylic pressure-sensitive adhesive is formed using a crosslinking agent, the content of the crosslinking agent is based on 100 parts by mass of the polymer component including the (meth) acrylic acid alkyl ester copolymer. However, it is preferably 0.005 to 3 parts by mass, more preferably 0.01 to 2 parts by mass, and particularly preferably 0.015 to 1 part by mass. However, moderate aggregation desired for the adhesive forming the adhesive layer Depending on the properties, the content of the crosslinking agent is adjusted in consideration of the pressure-sensitive adhesive composition and the type of the crosslinking agent. The cross-linking agent may be used alone or in combination of two or more types, and at the same time, it is not necessary to add two or more types, and is added before or during the application of the pressure-sensitive adhesive for forming the pressure-sensitive adhesive layer. The method of doing is mentioned.

The acrylic pressure-sensitive adhesive forming the pressure-sensitive adhesive layer usually does not necessarily contain the plasticizer contained in the pressure-sensitive adhesive in the patch, but may contain a plasticizer as desired. Examples of the plasticizer include polyhydric alcohols (glycerin, sorbitol, propylene glycol, 1,3-butylene glycol, 1,3-tetramethylene glycol, polyethylene glycol, etc.); phenols (thymol, safrole, isosafrole, Eugenol, isoeugenol, etc.); higher alcohols (benzyl alcohol, oleyl alcohol, cetyl alcohol, stearyl alcohol, cetostearyl alcohol, octyldodecanol, etc.); ester surfactants (sorbitan sesquioleate, polyoxyethylene hydrogenated castor oil) Fatty acid esters (isopropyl myristate, octyldodecyl myristate, oleyl oleate, diethyl phthalate, dibutyl phthalate, etc.) ; Organic acids (lactic acid, citric acid, tartaric acid, maleic acid, malic acid); plasticizer agents are liquid at room temperature like.

Furthermore, the acrylic pressure-sensitive adhesive forming the pressure-sensitive adhesive layer can contain a filler such as calcium carbonate, magnesium carbonate, silicate, zinc oxide, titanium oxide, magnesium sulfate, and calcium sulfate, if necessary. .

The content of the additive varies depending on the type of the additive, but usually it is preferably 0.001 to 10% by mass, particularly preferably 0.01 to 2% by mass, based on the total mass of the adhesive layer.

[Rubber adhesive, urethane adhesive and silicone adhesive]
Examples of rubber-based pressure-sensitive adhesives that can be preferably used as pressure-sensitive adhesives for forming pressure-sensitive adhesive layers include synthetic polyisoprene rubber, polyisobutylene, styrene-isoprene-styrene block copolymer (SIS), and styrene-butadiene-styrene block copolymer ( SBS), and a pressure-sensitive adhesive formed from a composition in which a rubber base such as styrene-ethylene / butylene-styrene block copolymer (SEBS) is mixed with a tackifier resin, a softener and the like. These rubber bases can be used alone or in combination of two or more. Among these rubber bases, thermoplastic elastomers such as SIS, SBS, and SEBS, which have low sensitization and have crosslinking points in the molecule, are preferable, SIS is particularly preferable, and commercially available products manufactured by JSR Corporation JSR SIS5229, JSR SIS5000, JSR SIS5002, etc. can be used. Moreover, as a rubber-type adhesive, the hydrocolloid type adhesive containing a water absorbing agent can be used. The hydrocolloid pressure-sensitive adhesive contains an elastomer containing a styrene block copolymer and liquid rubber, a tackifier resin, at least one plasticizer, and a water-absorbing agent, and optionally contains other components. Styrenic block copolymers include SBS, SEBS, SIS and its hydrogenated rubber (SEPS), styrene-isobutylene-styrene block copolymer (SIBS), etc., and one or more of these may be used in combination. can do. Examples of the liquid rubber include liquid elastomer components such as liquid polyisoprene (LIR), liquid polybutadiene (LPB), polyisobutylene (PIB), and polybutene (PB). Examples of water-absorbing agents include guar gum, locust bean gum, xanthan gum, karaya gum, pectin, alginic acid, gelatin, carboxymethylcellulose / sodium cellulose derivatives, chitin, chitosan, polyvinyl alcohol, polyacrylate, starch / acrylic acid graft polymer, etc. In particular, it is preferable to use carboxymethylcellulose / sodium having good heat resistance.

Examples of urethane-based pressure-sensitive adhesives that can be preferably used as pressure-sensitive adhesives for forming pressure-sensitive adhesive layers include, for example, aliphatic polyurethane pressure-sensitive adhesives obtained by using polyether-based polyurethane prepolymers, polyester-based polyurethane prepolymer solutions, and aromatic-based pressure-sensitive adhesives. Examples include polyurethane adhesives. Examples of the silicone-based pressure-sensitive adhesive that can be preferably used as the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer include those mainly composed of silicone rubber such as polydimethylsiloxane, polymethylvinylsiloxane, and polymethylphenylsiloxane.

The adhesive that forms the adhesive layer such as a rubber-based adhesive, urethane-based adhesive, or silicone-based adhesive may contain various additives as necessary, as described for the acrylic-based adhesive. it can.

[Thickness of adhesive layer]
The thickness of the pressure-sensitive adhesive layer is not particularly limited, but is preferably in the range of 1 to 35 μm, more preferably 1 to 30 μm from the viewpoints of adhesiveness, skin irritation, persistence of adhesion, uncomfortable feeling during application, and the like. More preferably, it is in the range of 1 to 25 μm, particularly preferably 2 to 24 μm, and most preferably 3 to 23 μm. If the thickness of the adhesive layer becomes too large, it tends to be difficult to adapt to the wrinkles and irregularities of the skin of the lips, and the applied state becomes conspicuous, and when removing the lip cosmetic cover adhesive from the lips In addition, the lips may be damaged or pain may be felt. If the thickness of the pressure-sensitive adhesive layer is too thin, it tends to be difficult to form a uniform pressure-sensitive adhesive layer, and in addition, the adhesiveness to the lips tends to be insufficient.

[Thickness of support layer and pressure-sensitive adhesive layer]
As can be seen from the thickness of the support layer and the thickness of the pressure-sensitive adhesive layer described above, the patch for a lip cosmetic cover of the present invention has a total thickness of the support layer and the pressure-sensitive adhesive layer in the range of 2 to 70 μm. Preferably, the thickness is in the range of 2 to 55 μm, more preferably 2 to 40 μm, particularly preferably 3 to 37 μm, and most preferably 4 to 36 μm, and a thickness in the range of 4 to 29 μm is desired. Sometimes. If the total thickness of the support and the adhesive layer is too small, the strength of the lip cosmetic cover patch is insufficient, and the lip cosmetic cover patch is applied to the lip or the lip cosmetic cover patch. When the lip is peeled off from the lips, it may be cut off, and the adhesiveness to the lips may be insufficient and the adhesion to the lips may be insufficient. On the other hand, if the total thickness of the support and the pressure-sensitive adhesive layer is too large, the adhesive material for the lip cosmetic cover is difficult to adhere along the unevenness of the lips, the applied state is easily noticeable, and the uncomfortable feeling is likely to increase, When peeling off the cosmetic cover patch from the lips, the lips may be damaged or pain may be felt.

3. Separator layer The lip cosmetic cover patch of the present invention comprises a support layer, an adhesive layer and a separator layer, which are laminated in this order. As a separator layer, in many conventional patch materials, it is arranged to protect the surface of the pressure-sensitive adhesive layer until it is applied, and in order to form a thin and uniform pressure-sensitive adhesive layer, the patch material is used. The same material as the separator layer used in the manufacturing method can be used and is not particularly limited. Specifically, in the technical field of patch materials, generally called release papers, release papers, release liners, and the like can be mentioned. More specifically, polyethylene terephthalate film whose surface is siliconized, and whose surface is siliconized A laminate of polyethylene and paper can be used.

The separator layer may be provided with irregularities by sandblasting or the like on the surface of the separator layer facing the pressure-sensitive adhesive layer or on the opposite surface of the pressure-sensitive adhesive layer for the purpose of improving handleability or improving printability. The separator layer may have one or more slits (cuts) in order to improve handleability (that is, peelability from the pressure-sensitive adhesive layer). Considering the size of the lip cosmetic cover patch, one slit is usually provided at an appropriate position. The slit refers to the vertical direction (the direction corresponding to the thickness direction of the lips. Usually, the direction perpendicular to the longitudinal direction of the patch is applicable) or the horizontal direction (the direction corresponding to the width direction of the lips. It may be provided along any direction of the longitudinal direction of the patch. In addition, a slit does not include what has a connection part, but means what is completely cut | interrupted (hereinafter the same).

The size of the separator layer is not particularly limited, but the separator area may be larger than the support layer area. In particular, the separator layer is provided as a single large sheet, and a plurality of laminates, in particular, a pressure-sensitive adhesive, are provided with a support layer and a pressure-sensitive adhesive layer adjacent to at least one surface of the single separator layer. A plurality of combinations comprising a layer and a support layer and, if desired, a carrier layer may be arranged and laminated in parallel so that the pressure-sensitive adhesive layer faces the separator layer. In this case, the separator layer is shared in a laminate including a plurality of support layers and an adhesive layer adjacent to each other.

The thickness of the separator layer can be appropriately set and is not particularly limited, but is usually 20 μm or more, preferably 40 μm or more, and the upper limit is about 500 μm. The separator layer may protect the pressure-sensitive adhesive layer as two or more sheets having the same or different thickness, and the total thickness may be within the range described above.

4). Carrier layer The patch for a lip cosmetic cover of the present invention comprises a support layer, a pressure-sensitive adhesive layer and a separator layer laminated in this order, and a carrier layer on the surface of the support layer opposite to the pressure-sensitive adhesive layer. May be provided. The adhesive material for lip cosmetic cover is provided with a carrier layer adjacent to the support layer, specifically on the surface opposite to the adhesive layer of the support layer, so that the handling property of the adhesive material and the lip are preliminarily provided. The sticking property to the lips to which the cosmetic is applied can be improved. Further, as will be described in detail later, in the method for producing a lip cosmetic cover patch of the present invention, the support layer can be easily formed. That is, when the patch is applied to the lips, the support layer may be wrinkled or the patch may be bent and the adhesive layers may adhere to each other, but the patch is adjacent to the support layer. By providing the carrier layer, the shape retaining property of the patch is improved, so that such a problem can be prevented.

When the support layer provided in the lip cosmetic cover patch of the present invention is, for example, in the range of 1 to 13 μm, further in the range of 1 to 6 μm, and extremely thin, the support layer However, as described later, the step of forming a support layer on the surface (upper surface) of the carrier layer by a solution casting method, and the carrier layer and the support are sometimes accompanied by technical difficulties. A thin support layer can be easily formed by adopting a step of extrusion laminating the layers.

The thickness of the carrier layer can be appropriately set and is not particularly limited, but is usually 20 μm or more, preferably 40 μm or more, and its upper limit is about 500 μm.

The carrier layer can be formed using films made of various thermoplastic resins. For example, it is formed using a film made of various thermoplastic resins such as polyurethane, polyethylene, polypropylene, ionomer, polyamide, polyvinyl chloride, polyvinylidene chloride, ethylene-vinyl acetate copolymer, thermoplastic polyester, polytetrafluoroethylene and the like. It is preferable. For the purpose of environmental conservation, the carrier layer is made of polyhydroxybutyrate, polyhydroxyalkanoate, maltotriose, polylactic acid, polyglycolic acid, polyethylene succinate, polybutylene succinate, polycaprolactone, polybutylene adipate terephthalate, polytetra Membrane adipate terephthalate, polyethylene terephthalate resin, polyvinyl alcohol, starch fatty acid ester, starch processing resin, starch polyester, cellulose acetate, chitosan or a film made of various thermoplastic resins having biodegradability represented by their copolymers It can also be formed. Various films may be laminated on paper. In order to make the surface of the support layer gloss, a flat film with few irregularities may be used as the film forming the carrier layer.

The carrier layer can be easily peeled off from the support layer when in use, that is, when the patch is applied to the skin. Therefore, the carrier layer and the support layer are formed so as to be peelable by thermocompression bonding or adhesion. In order to adjust the peeling force between the carrier layer and the support layer, an adhesive, a liquid plasticizer, a release agent, etc. may be applied to the surface of the carrier layer facing the support layer. The surface treatment may be performed.

The carrier layer is desirably thicker or firmer than the support layer from the viewpoint of improving the handleability (that is, peelability from the support layer). Also, in order to make it easy to peel off the support after the patch is applied to the lips, the carrier layer may have one or more slits (cuts) S as shown in FIGS. Considering the size of the lip cosmetic cover patch, one slit S is usually provided. The slit S refers to the vertical direction (the direction corresponding to the thickness direction of the lips. Usually, the direction perpendicular to the longitudinal direction of the patch is applicable) or the horizontal direction (the direction corresponding to the width direction of the lips. May correspond to the longitudinal direction of the patch material). From the viewpoint of handleability, it is preferable that the carrier layer has a longitudinal slit S. The longitudinal slit S may be provided at a central position in the width direction of the lips, or may be provided at a position other than the central portion, for example, a position divided 1: 2 in the width direction of the lips.

[Size of carrier layer]
Although the magnitude | size of the carrier layer of the adhesive material for lip cosmetic covers of this invention is not specifically limited, A carrier layer can be made larger than a support body layer. That is, the carrier layer included in the adhesive for covering the lip cosmetic cover is provided so that the support layer and the adhesive layer can be easily peeled off from the support layer after the support layer and the adhesive layer are attached to the lips. From the above, the carrier layer is larger than the support layer, so that the carrier layer can be used as a gripping portion of the adhesive material, and the adhesive layer of the adhesive material can be easily peeled off from the separator layer described later. The adhesive layer of the patch can be applied to the lips without touching the adhesive. Here, “the carrier layer is larger than the support layer” means that the carrier layer has a portion that does not cover the support layer. For example, in addition to the case where the area of the carrier layer is larger than the area of the support layer (in this case, a part of the carrier layer covers the support layer), the carrier layer is formed in a pattern such as a lattice shape. When the edge of the lattice protrudes from the support layer, the carrier layer covers the edge of the support layer so as to protrude from the support layer. The carrier layer may be provided so as to cover the support layer in a state of being divided into a plurality of sheets or partially overlapping. Moreover, you may arrange | position the sheet | seat which provided the opening and cut | interruption for improving a handleability further on the upper surface (surface on the opposite side of a support body layer) of a carrier layer.

5. The adhesive material for lip cosmetic cover The adhesive material for lip cosmetic cover of the present invention comprises a support layer, an adhesive layer, and a separator layer, which are laminated in this order. A carrier layer is provided on the surface opposite to the agent layer.

[Shape and size of adhesive material for lip cosmetic cover]
Shape and size of the adhesive material for lip cosmetic cover of the present invention (the shape and size of the support layer and the adhesive layer applied to the surface of the lip cosmetic material, that is, the separator layer, and the carrier provided as desired) Means the shape and size of the patch excluding the layer.) Is not particularly limited, but the patch for the lip cosmetic cover has an adhesive layer and a support layer on the lip to which the lip cosmetic has been applied in advance. Is laminated and left on the lip surface. Accordingly, the adhesive layer for the lip cosmetic cover is made so that the shape and size of the support layer is the shape and size that covers all or a desired part of the lip to which the lip cosmetic has been previously applied. What is necessary is just to define a shape and a magnitude | size. Since the shape and size of the support layer are as described above, the shape of the lip cosmetic cover patch is, for example, a lip shape as shown in FIGS. And a shape selected from the group consisting of an oval shape and a crescent shape. Attaching for the lip cosmetic cover so that the area covered by the lip cosmetic cover patch is 40 to 120%, preferably 50 to 100% of the area of the lip (at least one of the upper lip or the lower lip). The material can be used. The size of the lip cosmetic cover patch is usually in the range of 2 to 15 cm ² for the upper lip and for the lower lip, in most cases 3 to 10 cm ² and in most cases 3 to 7 cm ^2. . The shape and size of the adhesive material for lip cosmetic cover may be the same or different between the material applied to the upper lip and the material applied to the lower lip.

[Thickness of adhesive material for lip cosmetic cover]
The thickness of the lip cosmetic cover patch can be determined in consideration of the thicknesses of the support layer, the pressure-sensitive adhesive layer, the separator layer, and the carrier layer provided as desired. The thickness of the lip cosmetic cover patch is usually in the range of 22 to 700 μm, preferably 50 to 600 μm, more preferably 70 to 500 μm. If the thickness of the lip cosmetic cover patch is too small or too large, the handleability may deteriorate.

[Color transfer of lip cosmetics]
The adhesive material for lip cosmetic cover of the present invention has very little color transfer of lip cosmetics such as lipstick. The color transfer of the lip cosmetic can be evaluated by the following method. That is, after applying lip balm (containing oil, which does not contain pigment) having a predetermined composition to lips (upper lip and lower lip) in advance for 6 subjects, lip cosmetics A cover patch is applied to the surface of the lip cream of the subject's lips (upper lip and lower lip). Immediately after application, 2 hours after application (hereinafter sometimes referred to as “after 2 hours”), after meal (after 3 hours; hereinafter referred to as “after meal”) and after 7 hours (hereinafter referred to as “after meal”). , "After 7 hours"), lightly press a commercially available oil paper on the lip cosmetic cover patch by hand, and visually observe whether the oil content of the lip cream is oozing out. Evaluation is performed for each subject based on the evaluation criteria. The average value of the evaluations of the six subjects is taken as the evaluation of the color transfer of the lip cosmetic for the lip cosmetic cover patch. If the evaluation of the color transfer of the lip cosmetic after meal is 9 or more, it can be said that the color transfer of the lip cosmetic is almost completely suppressed. Further, if the evaluation of the color transfer of the lip cosmetic after 9 hours is 9 or more, it can be said that the color transfer of the lip cosmetic is completely suppressed, and if the evaluation is 9.4 or more, the lip It can be said that the color transfer of the cosmetic is almost completely suppressed. If the evaluation is 9.7 or more, it can be said that the color transfer of the lip cosmetic is completely suppressed.
<Evaluation criteria for color transfer of lip cosmetics>
0.0 to 2.0: There is a color shift 2.1 to 4.0: There is a slight color shift 4.1 to 6.0: I do not mind the color shift 6.1 to 8.0: A color shift 8.1 to 10.0: No color transfer

[Durability of adhesion]
The adhesive material for lip cosmetic cover of the present invention is excellent in the persistence of adhesion of the adhesive material to the lips. The persistence of the sticking of the patch can be evaluated by the following method. That is, after applying lip balm having a predetermined composition used for evaluation of color transfer of lip cosmetics to six subjects in advance on the lips (upper lip and lower lip), a lip cosmetic cover patch Is applied to the lips (upper lip and lower lip) of the subject, immediately after application, 2 hours later, after meals and 7 hours later, the state of adhesion of the lip cosmetic cover adhesive is visually observed and based on the following evaluation criteria For each subject. The average value of the evaluations of the six subjects is used as the evaluation of the persistence of the adhesion for the lip cosmetic cover patch. If the evaluation of the persistence of adhesion after 2 hours is 7.5 or more and the evaluation of the persistence of adhesion after meals and after 7 hours is 4.5 or more, the persistence of adhesion is extremely excellent. Can do. If the evaluation of the persistence of adhesion after 2 hours is 7 or more, or the evaluation of the persistence of adhesion after meal and 7 hours is 4 or more, there is no problem in use.
<Evaluation criteria for adhesion persistence>
0.0 to 2.0: The patch is completely peeled 2.1 to 4.0: The patch is less than half of the area 4.1 to 6.0: The patch is 2 / of the area 3 or more adhered 6.1 to 8.0: There is a part where the patch is peeled off 8.1 to 10.0: The patch is not peeled off at all

[Difficult to notice sticking points]
The adhesive material for a lip cosmetic cover of the present invention is excellent in the inconspicuousness of the applied part of the adhesive material. The inconspicuousness of the sticking place of the sticking material can be evaluated by the following method. That is, after applying lip balm having a predetermined composition used for evaluation of color transfer of lip cosmetics to six subjects in advance on the lips (upper lip and lower lip), a lip cosmetic cover patch Is applied to the lips (upper lip and lower lip) of the subject, and immediately after application, 2 hours later, after meals and 7 hours later, visually check the conspicuousness of the applied part of the lip cosmetic cover patch, and Evaluation is performed for each subject based on the evaluation criteria. The average value of the evaluations of the six subjects is set as an evaluation of the conspicuousness of the sticking location on the lip cosmetic cover patch. If the evaluation of the conspicuousness of the sticking place after 2 hours is 7.5 or more and the evaluation of the conspicuousness of the sticking place after eating and after 7 hours is 5 or more, the conspicuousness of the sticking place is extremely excellent. It can be said that If the degree of conspicuousness of the pasted portion after 2 hours is 6 or more, or the evaluation of the degree of conspicuousness of the pasted portion after meal and 7 hours is 4 or more, there is no problem in use.
<Evaluation criteria for conspicuousness of sticking points>
0.0 to 2.0: conspicuous 2.1 to 4.0: slightly conspicuous 4.1 to 6.0: hardly conspicuous 6.1 to 8.0: inconspicuous 8.1 to 10.0: no Inconspicuous

[Uncomfortable feeling during application]
The adhesive material for a lip cosmetic cover of the present invention has little uncomfortable feeling during application of the adhesive material. The uncomfortable feeling during sticking of the patch can be evaluated by the following method. That is, after applying lip balm having a predetermined composition used for evaluation of color transfer of lip cosmetics to six subjects in advance on the lips (upper lip and lower lip), a lip cosmetic cover patch On the subject's lips (upper lip and lower lip). Immediately after application, 2 hours later, after meal and 7 hours later, the discomfort during application of the lip cosmetic cover patch was evaluated based on the following evaluation criteria. Subject performs sensory evaluation. The average value of the evaluations of the six subjects is set as an evaluation of the uncomfortable feeling during application of the adhesive material for the lip cosmetic cover. If the evaluation of discomfort during application after 2 hours is 7 or more and the discomfort after application and after application for 7 hours is 5 or more, it can be said that there is very little discomfort during application of the patch. If the evaluation of discomfort during pasting after 2 hours is 6 or more, or if the discomfort after eating and after 7 hours is 4 or more, there is no problem in use.
<Evaluation criteria for discomfort during application>
0.0 to 2.0: I feel uncomfortable feeling 2.1-4.0: I feel uncomfortable 4.1-6.0: I feel a little uncomfortable 6.1-8.0: There is almost no sense of incongruity 8 .1 to 10.0: No discomfort

[Adhesion to bakelite plate after lip balm application]
The adhesive material for a lip cosmetic cover of the present invention has good adhesion of the adhesive material to the lips, and has an adhesive strength to a bakelite plate after application of the lip balm that is not less than a predetermined value. The adhesive strength against the bakelite plate after the lip balm of the adhesive material for lip cosmetic cover can be measured by the following method. That is, in an atmosphere of a temperature of 23 ° C. and a relative humidity of 50%, lip cream having the composition shown in Table 1 is ground in a mortar to form a cream, and this cream is baked on a bakelite plate (width 37 mm × length 125 mm, manufactured by Sumitomo Bakelite Co., Ltd.). , PL-1102) with an applicator, and peeled off the separator layer of the test piece of the lip cosmetic cover patch cut out to a width of 15 mm and a length of 70 mm on the surface of the lip balm, and exposed the adhesive When the layer is attached and the carrier layer is provided, the carrier layer is peeled off from the support layer, reciprocated once at a speed of 300 mm / min with a rubber roll having a mass of 2 kg, and after 20 minutes, 90 degrees with an Instron type tensile tester. Measure the adhesive strength when peeling in the direction at a peeling speed of 300 mm / min, and measure the viscosity against the bakelite plate after lip balm application. Adhesive force (after 20 minutes of pressure bonding) (unit: N / 15 mm) (average value of n = 3). The amount of lip balm applied and the range to be stretched are adjusted so that 3 mg of lip balm per test piece is applied. If the adhesive strength to the bakelite plate after applying the lip balm (after 20 minutes of pressure bonding) is 0.03 N / 15 mm or more, it can be said that the adhesion of the adhesive material to the lips is good, If the adhesive strength to the bakelite plate after application (after 20 minutes of pressure bonding) is 0.06 N / 15 mm or more, it can be said that the persistence of adhesion of the adhesive material to the lips is excellent. If the adhesive strength to the bakelite plate (after 20 minutes of pressure bonding) is 0.1 N / 15 mm or more, it can be said that the adhesion of the adhesive material to the lips is particularly excellent, and if it is 0.15 N / 15 mm or more. In other words, it can be said that the persistence of the attachment of the patch to the lips is extremely excellent. If the adhesive strength against the bakelite plate after applying the lip balm is too great, it may be difficult to remove the adhesive material for lip cosmetic cover, or you may feel pain when removing it, and you may feel uncomfortable during application, so the upper limit is Usually 1.2 N / 15 mm, and in many cases 0.8 N / 15 mm.

[Adhesion to bakelite plate without lip balm applied]
The adhesive material for a lip cosmetic cover of the present invention has a good persistence of adhesion of the adhesive material to the lips, and has an adhesive strength to a bakelite plate not applied with lip balm of a predetermined value or more. The adhesive strength of the lip cosmetic cover patch to which the lip balm is not applied is measured by performing a 90-degree peel test in accordance with JIS Z0237. That is, in an atmosphere at a temperature of 23 ° C. and a relative humidity of 50%, the separator layer of the test piece of the adhesive material for the lip cosmetic cover cut out to a width of 15 mm × a length of 70 mm was peeled off, and the exposed adhesive layer was removed. When the carrier layer is provided on the bakelite plate (not coated with lip balm), the carrier layer is peeled off from the support layer, and a rubber roll having a mass of 2 kg is reciprocated once at a speed of 300 mm / min. After the lapse of time, the adhesive strength when peeled off at 90 ° in the Instron type tensile tester at a peeling speed of 300 mm / min was measured, and the adhesive strength against the bakelite plate not coated with lip balm (after 20 minutes of crimping) (unit) : N / 15 mm) (average value of n = 3). If the adhesive strength to the bakelite plate (after 20 minutes of pressure bonding) is 0.5 N / 15 mm or more, it can be said that the adhesion of the adhesive to the lips is good, and the adhesive to the bakelite plate to which the lip balm is not applied. If the force (after 20 minutes of pressure bonding) is 0.7 N / 15 mm or more, it can be said that the adhesion of the adhesive to the lips is excellent in persistence. If the adhesive strength to the bakelite plate is too large, it may be difficult to remove the adhesive for covering the lip cosmetic cover, or it may cause pain when it is peeled off, or may feel uncomfortable during the application. The upper limit is usually 4 N / 15 mm, In many cases, it is 3.5 N / 15 mm.

(Probe tack)
The adhesive material for lip cosmetic cover of the present invention has good persistence of adhesion of the adhesive material to the lips, and has a probe tack of a predetermined value or more. The probe tack of the adhesive material for lip cosmetic cover is a cylinder having a diameter of 5 mm in accordance with the probe tack test method described in JIS Z0237 (1996 edition) using a probe tack tester manufactured by Nichiban Co., Ltd. It is determined by measuring the force required to peel the probe from the adhesive layer in the vertical direction (unit: N / 5 mmφ, average value of n = 3). If the probe tack is 0.2 N / 5 mmφ or more, it can be said that the adhesion of the adhesive material to the lips is good, and if the probe tack is 0.4 N / 5 mmφ or more, the adhesive material to the lips. It can be said that the persistence of adhesion is excellent. If the probe tack is too large, it may be difficult to remove the adhesive material for the lip cosmetic cover, or you may feel pain when removing it, and you may feel uncomfortable during the application. The upper limit is usually 3N / 5mmφ, and in many cases A probe tack of 2N / 5mmφ and 1N / 5mmφ or less may be desired.

III. Use of the adhesive material for lip cosmetic cover The adhesive material for lip cosmetic cover of the present invention first peels off the separator layer to expose the adhesive layer, and then applies the adhesive layer to lip cosmetics such as lipstick. The adhesive material for the lip cosmetic cover is applied to the lips by pressing the support layer (or carrier layer in the case of providing a carrier layer) against the lips with a finger or the like so as to face the applied lips.

The lip cosmetic to which the patch for lip cosmetic cover of the present invention can be applied is, as described above, lipstick, lipstick, lip gloss, lip crayon, lip liner, lip balm, lip balm, lip Lip cosmetics selected from the group consisting of treatments and lip overcoats, and lip cosmetics selected from the group consisting of solid, ointment, paste, cream, gel, and liquid. It is done.

When the lip cosmetic cover adhesive has a carrier layer, the carrier layer is peeled from the support layer after the lip cosmetic cover adhesive is applied to the lips. When the carrier layer has one or more slits and / or the carrier layer has slits in the vertical direction (the lip thickness direction), it is easy to peel the carrier layer from the support layer.

Regarding the use of the lip cosmetic cover patch of the present invention, it may be the use of a lip cosmetic cover patch that covers the surface of the lip coated with lip cosmetic such as lipstick so as to cover the lip cosmetic. Alternatively, it is preferable to use a lip cosmetic cover patch that covers 40 to 120% of at least one area of the lower lip. That is, the color transfer of lip cosmetics such as lipstick to tableware or the like usually occurs at a site where the lip cosmetic applied to the lips contacts the tableware or the like. Therefore, if the adhesive material for lip cosmetic cover according to the present invention is applied so as to cover the part of the lip, it is possible to prevent color transfer to tableware etc. of lip cosmetics such as lipstick. In this case, the object can be achieved if the adhesive material for a lip cosmetic cover of the present invention is used for application so as to cover 50 to 100% of the area of at least one of the upper lip and the lower lip.

Further, the use of the adhesive material for the lip cosmetic cover of the present invention may be applied to only one of the upper lip and the lower lip, but it is applied to both the upper lip and the lower lip, that is, for the upper lip and the lower lip. It is preferable to use the adhesive material for lip cosmetic cover used in a two-sheet set.

IV. Method for producing adhesive material for lip cosmetic cover The adhesive material for lip cosmetic cover of the present invention comprises a support layer, an adhesive layer and a separator layer laminated in this order, and the adhesive material for lip cosmetic cover The production method is not limited as long as a patch for a lip cosmetic cover having a carrier layer can be obtained on the material, preferably the surface of the support layer opposite to the pressure-sensitive adhesive layer. For example, the film forming the support layer can be formed into a film by any production method such as a solution casting method, an extrusion method, a calendar method, and an inflation method.

The pressure-sensitive adhesive layer can be formed, for example, by supplying a pressure-sensitive adhesive to one upper surface of the support layer or the separator layer by a method such as a coating method or an extrusion method. Moreover, it can form by supplying an adhesive between a support body layer and a separator layer. Further, the support layer and the pressure-sensitive adhesive layer can be coextruded.

From the viewpoint that a stable quality lip cosmetic cover patch can be easily manufactured, the lip cosmetic cover patch includes a step of coating the upper surface of the separator layer with an adhesive to form an adhesive layer. It is preferable that it is a manufacturing method. The method of applying the adhesive is not particularly limited, such as spread coating, hot melt coating, emulsion coating, etc. In particular, in the case of obtaining an extremely thin adhesive layer having a thickness of 23 μm or less, for example, 3 to 23 μm. The spread coating method is preferred. Specifically, while the separator layer formed in advance is run in one direction, the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer is applied to the upper surface of the separator layer, and the solvent is removed by drying to form the pressure-sensitive adhesive layer. Next, a lip cosmetic comprising a support layer, a pressure-sensitive adhesive layer, and a separator layer laminated in this order by laminating the support layer so that the pressure-sensitive adhesive layer faces the support layer. A cover patch can be obtained.

Furthermore, the above-described method for producing a lip cosmetic cover patch comprising the step of forming a support layer on the upper surface of the carrier layer by a solution casting method is more preferred. In particular, when obtaining a very thin support layer having a thickness in the range of 1 to 13 μm, it is more preferable to employ a method of forming a support layer on the upper surface of the carrier layer. More specifically, a support layer formed continuously by applying a solution for forming a support layer on the upper surface of the carrier layer formed in advance while traveling in one direction and drying the carrier layer. Can be created. According to the solution casting method, the thickness of the support layer can be accurately controlled, and a support layer having small anisotropy of physical properties depending on the direction of the film can be formed.

Therefore, the adhesive material for lip cosmetic cover according to the present invention comprises a step of forming a support layer on the upper surface of the carrier layer by a solution casting method, and an adhesive layer is formed by applying an adhesive on the upper surface of the separator layer. It can obtain more preferably by the manufacturing method of the adhesive material for lip cosmetics covers including the process to do. In this case, the laminate in which the support layer is formed on one side of the carrier layer and the laminate in which the pressure-sensitive adhesive layer is formed on one side of the separator layer are bonded so that the support layer and the adhesive layer are in close contact with each other. Thus, a laminate comprising a carrier layer / support layer / adhesive layer / separator layer laminated in this order can be formed.

Based on the formed laminate, a lip cosmetic cover patch comprising a carrier layer, a support layer, an adhesive layer and a separator layer laminated in this order can be prepared. Moreover, by peeling and removing the carrier layer from the formed laminate, a lip cosmetic cover patch comprising a support layer, a pressure-sensitive adhesive layer and a separator layer in this order can be prepared. it can. These adhesive materials for lip cosmetic cover are usually punched into a predetermined shape such as a lip shape, an oval shape, or a crescent shape, thereby producing a lip cosmetic cover adhesive material having the predetermined shape. be able to.

In addition, when punching into a predetermined shape, the support layer and the pressure-sensitive adhesive layer, and a laminate provided with the support layer and the pressure-sensitive adhesive layer adjacent to each other by punching through the carrier layer if desired and not through the separator layer A lip cosmetic cover patch can be obtained in which a plurality of bodies are arranged and laminated on at least one surface of one separator layer so that the pressure-sensitive adhesive layer faces the separator layer.

For the adhesive material for a lip cosmetic cover provided with a carrier layer on the surface opposite to the pressure-sensitive adhesive layer of the support layer, the carrier layer is formed by cutting through the carrier layer before and after punching into a predetermined shape. Can produce a patch for a lip cosmetic cover having one or more slits and / or a patch for a lip cosmetic cover having a carrier layer having slits in the longitudinal direction (thickness direction of the lips).

Hereinafter, the present invention will be described in detail with reference to examples and comparative examples, but the present invention is not limited to these examples. The adhesive material for lip cosmetic cover of the present invention and the properties and physical properties of each layer of the adhesive material were measured by the following methods.

[Thickness]
The thicknesses of the support layer, the pressure-sensitive adhesive layer, the separator layer, and the carrier layer included in the lip cosmetic cover patch were measured using a dial thickness gauge (unit μm, average value of n = 3).

[Color transfer of lip cosmetics]
For 6 subjects, after applying lip balm having the composition shown in Table 1 to the lips (upper lip and lower lip) in advance, the lip cosmetic cover patch was applied to the lips (upper lip and lower lip) of the subject. Affixed to the surface of the lip balm. Immediately after application, 2 hours after application (hereinafter sometimes referred to as “after 2 hours”), after meal (after 3 hours; hereinafter referred to as “after meal”) and after 7 hours (hereinafter referred to as “after meal”). "After 7 hours"), press the oil paper lightly on the lip cosmetic cover patch by hand, and visually observe whether the oil content of the lip balm starts to ooze out. Based on the above, each subject was evaluated. The average value of the evaluations of the six subjects was used as the evaluation of the color transfer of the lip cosmetic for the patch for covering the lip cosmetic cover.
<Evaluation criteria for color transfer of lip cosmetics>
0.0 to 2.0: There is a color shift 2.1 to 4.0: There is a slight color shift 4.1 to 6.0: I do not mind the color shift 6.1 to 8.0: A color shift 8.1 to 10.0: No color transfer

〔note〕
* 1: Risolex (registered trademark) PGIS 23 (manufactured by Higher Alcohol Industry Co., Ltd.)
* 2: Paraffin Wax 155 (Nippon Seiwa Co., Ltd.)
* 3: Ceresin wax SP-1020P (manufactured by STRAHL & PITSCH INC.)
* 4: Refined carnauba wax 1 (manufactured by Celerica NODA Corporation)
* 5: MULTIWAX (registered trademark) W-445 (manufactured by SONNEBORN. INC.)
* 6: KAK (registered trademark) 139 (manufactured by Higher Alcohol Industry Co., Ltd.)
* 7: Pearl Ream (registered trademark) 18 (manufactured by NOF Corporation)
* 8: Telcole (manufactured by Kawaken Fine Chemical Co., Ltd.)

[Durability of adhesion]
For 6 subjects, after applying lip balm having the composition shown in Table 1 to the lips (upper lip and lower lip) in advance, the lip cosmetic cover patch was applied to the lips (upper lip and lower lip) of the subject. Affixed, immediately after application, 2 hours later, after meal and 7 hours later, the adhesion state of the lip cosmetic cover adhesive was visually observed and evaluated for each subject based on the following evaluation criteria. The average value of the evaluations of the six subjects was used as an evaluation of the persistence of adhesion for the adhesive material for lip cosmetic cover.
<Evaluation criteria for adhesion persistence>
0.0 to 2.0: The patch is completely peeled 2.1 to 4.0: The patch is less than half of the area 4.1 to 6.0: The patch is 2 / of the area 3 or more adhered 6.1 to 8.0: There is a part where the patch is peeled off 8.1 to 10.0: The patch is not peeled off at all

[Difficult to notice sticking points]
For 6 subjects, after applying lip balm having the composition shown in Table 1 to the lips (upper lip and lower lip) in advance, the lip cosmetic cover patch was applied to the lips (upper lip and lower lip) of the subject. Immediately after application, 2 hours later, after meal and 7 hours later, the conspicuousness of the application site of the adhesive material for lip cosmetic cover was visually observed and evaluated for each subject based on the following evaluation criteria. The average value of the evaluations of the six subjects was used as an evaluation of the conspicuousness of the applied part of the adhesive material for lip cosmetic cover.
<Evaluation criteria for conspicuousness of sticking points>
0.0 to 2.0: conspicuous 2.1 to 4.0: slightly conspicuous 4.1 to 6.0: hardly conspicuous 6.1 to 8.0: inconspicuous 8.1 to 10.0: no Inconspicuous

[Uncomfortable feeling during application]
For 6 subjects, after applying lip balm having the composition shown in Table 1 to the lips (upper lip and lower lip) in advance, the lip cosmetic cover patch was applied to the lips (upper lip and lower lip) of the subject. Immediately after application, 2 hours later, after meal and 7 hours later, each subject sensory-evaluated the feeling of discomfort at the application site of the lip cosmetic cover patch based on the following evaluation criteria. The average value of the evaluations of the six subjects was set as an evaluation of the uncomfortable feeling during application of the adhesive material for lip cosmetic cover.
<Evaluation criteria for discomfort during application>
0.0 to 2.0: I feel uncomfortable feeling 2.1-4.0: I feel uncomfortable 4.1-6.0: I feel a little uncomfortable 6.1-8.0: There is almost no sense of incongruity 8 .1 to 10.0: No discomfort

[Adhesion to bakelite plate after lip balm application]
The adhesive strength to the bakelite plate after applying the lip balm of the patch for lip cosmetic cover was measured by the following method. That is, in an atmosphere of a temperature of 23 ° C. and a relative humidity of 50%, lip cream having the composition shown in Table 1 is ground in a mortar to form a cream, and this cream is baked on a bakelite plate (width 37 mm × length 125 mm, manufactured by Sumitomo Bakelite Co., Ltd.). , PL-1102) with an applicator, and peeled off the separator layer of the test piece of the lip cosmetic cover patch cut out to a width of 15 mm and a length of 70 mm on the surface of the lip balm, and exposed the adhesive After the layer was pasted and the carrier layer was peeled off from the support layer, it was reciprocated once at a speed of 300 mm / min with a rubber roll having a mass of 2 kg, and after 20 minutes, the peeling speed was 300 mm in the 90 degree direction with an Instron type tensile tester. Measure the adhesive strength when peeling under the conditions of / min., And apply the lip balm to the bakelite plate (after 20 minutes of crimping) ) (Unit: N / 15 mm) (average value of n = 3). The amount of lip balm applied and the range to be stretched were adjusted so that 3 mg of lip balm per test piece was applied.

[Adhesion to bakelite plate without lip balm applied]
The adhesive strength of the lip cosmetic uncoated lip cream to the bakelite plate was measured by performing a 90-degree peel test in accordance with JIS Z0237. That is, the separator layer of the test piece of the adhesive material for lip cosmetic cover cut out to a width of 15 mm and a length of 70 mm was peeled off, and the exposed adhesive layer was attached to the bakelite plate (not coated with lip balm). After the carrier layer is peeled off from the support layer, a rubber roll having a mass of 2 kg is reciprocated once at a speed of 300 mm / min, and after 20 minutes, the peeling speed is 300 mm / min in the 90 degree direction with an Instron type tensile tester. The adhesive strength when peeled off under the conditions was measured, and the adhesive strength against a bakelite plate not coated with lip balm (after 20 minutes of pressure bonding) (unit: N / 15 mm) (average value of n = 3).

(Probe tack)
The probe tack of the adhesive material for lip cosmetic cover is a cylinder having a diameter of 5 mm in accordance with the probe tack test method described in JIS Z0237 (1996 edition) using a probe tack tester manufactured by Nichiban Co., Ltd. The force required to peel the probe vertically from the pressure-sensitive adhesive layer was measured (unit: N / 5 mmφ, average value of n = 3).

[Example 1]
(Preparation of lip cosmetic cover patch)
Acrylic acid alkyl ester consisting of isononyl acrylate / 2-methoxyethyl acrylate / acrylic acid (mass ratio 68/30/2) on one side of release sheet (silicone-treated polyethylene terephthalate film, thickness 75 μm) forming separator layer An acrylic pressure-sensitive adhesive (hereinafter referred to as “acrylic pressure-sensitive adhesive 1”) in which 0.3 part by weight of Coronate (registered trademark) HL (manufactured by Nippon Polyurethane Industry Co., Ltd.) is added as a crosslinking agent to 100 parts by weight of the copolymer. In addition, an ethyl acetate solution (the total solid content is approximately 40% by mass) of the “acrylic 1” may be simply expressed by a bar coating method so that the thickness after drying becomes 5 μm. It apply | coated and then dried and the laminated body which consists of a separator layer and an adhesive layer was prepared.

On the other hand, a moisture-permeable polyether-type polyurethane elastomer solution for forming a support layer on a polyethylene-side surface of a high-quality polyethylene laminated paper (thickness 90 μm) that forms a carrier layer [Seiko Kasei Co., Ltd., Rack Skin (registered trademark) US2268 (Tg = −23.1 ° C.)] is applied by a bar coating method so that the thickness after drying is 5 μm, and then dried to form a carrier layer and a support layer. A laminate comprising:

The laminates prepared above are integrated as a support layer and an adhesive layer are bonded together to obtain a laminate having a thickness of 175 μm and comprising a carrier layer / support layer / adhesive layer / separator layer in this order. It was. Next, a lip shape having an area of 3.75 cm ² as an adhesive material for a lip cosmetic cover for the upper lip and an area of 3.44 cm ² as an adhesive material for a lip cosmetic cover for the lower lip is punched from the laminate. A patch for a lip cosmetic cover for use in a set of two for the upper lip and for the lower lip was prepared.

(Use of adhesive material for lip cosmetic cover)
First, the separator layer was peeled off using the adhesive material for lip cosmetic cover, and the exposed adhesive layer was applied to the lip (upper lip and lower lip. The area was previously applied with lip balm having the composition shown in Table 1 above. each generally affixed respectively finger 4 was ~ 7 cm ^2.), and then was subjected to a series of operations to peel off the carrier layer from the support layer, it was possible to carry out the implementation easy. About this lip cosmetic cover patch, the lip lip color shift (hereinafter sometimes referred to as “color shift”) and the persistence of adhesion (hereinafter sometimes referred to as “persistence”). In addition, the degree of difficulty in conspicuousness (hereinafter sometimes referred to as “inconspicuousness”) and the feeling of discomfort during the pasting (hereinafter sometimes referred to as “discomfort”) were evaluated. Moreover, about this lip cosmetic cover adhesive, the adhesive strength to the bakelite plate after applying the lip balm (unit: N / 15 mm), the adhesive strength to the bakelite plate not applied with the lip balm (unit: N / 15 mm, hereinafter) The probe tack (unit: N / 5 mmφ) and the probe tack (unit: sometimes N / 5 mmφ) were measured. The evaluation and measurement results are shown in Table 2.

[Example 2]
On one side of the release sheet forming the separator layer, an ethyl acetate solution of acrylic pressure-sensitive adhesive 1 is applied by a bar coating method so that the thickness after drying becomes 10 μm, and then dried, and the separator layer and the pressure-sensitive adhesive layer A lip cosmetic cover patch was prepared in the same manner as in Example 1 except that a laminate comprising: This patch for lip cosmetic cover was evaluated for color transfer, durability, inconspicuousness and uncomfortable feeling, adhesive strength against bakelite board after lip balm application, adhesive strength against bakelite board without lip balm and probe tack Was measured. The evaluation and measurement results are shown in Table 2.

[Example 3]
On one side of the release sheet forming the separator layer, an ethyl acetate solution of acrylic pressure-sensitive adhesive 1 is applied by a bar coating method so that the thickness after drying is 15 μm, and then dried to separate the separator layer and the pressure-sensitive adhesive layer. A lip cosmetic cover patch was prepared in the same manner as in Example 1 except that a laminate comprising: This patch for lip cosmetic cover was evaluated for color transfer, durability, inconspicuousness and uncomfortable feeling, adhesive strength against bakelite board after lip balm application, adhesive strength against bakelite board without lip balm and probe tack Was measured. The evaluation and measurement results are shown in Table 2.

[Example 4]
Instead of the acrylic pressure-sensitive adhesive 1, TETRAD (registered trademark) X0.03 as a crosslinking agent with respect to 100 parts by mass of an acrylic acid alkyl ester copolymer composed of isononyl acrylate / acrylic acid (mass ratio 96/4). An acrylic pressure-sensitive adhesive to which parts by mass (Mitsubishi Gas Chemical Co., Ltd.) is added (hereinafter sometimes referred to as “acrylic pressure-sensitive adhesive 2” or simply “acrylic 2”) is used. Except for the above, a lip cosmetic cover patch was prepared in the same manner as in Example 3. This patch for lip cosmetic cover was evaluated for color transfer, durability, inconspicuousness and uncomfortable feeling, adhesive strength against bakelite board after lip balm application, adhesive strength against bakelite board without lip balm and probe tack Was measured. The evaluation and measurement results are shown in Table 2.

[Example 5]
Instead of the acrylic pressure-sensitive adhesive 2, TETRAD (registered trademark) X0.02 as a crosslinking agent with respect to 100 parts by mass of an acrylic acid alkyl ester copolymer composed of isononyl acrylate / acrylic acid (mass ratio 98/2). Acrylic pressure-sensitive adhesive (hereinafter referred to as “acrylic pressure-sensitive adhesive 3”) with the addition of parts by mass (Mitsubishi Gas Chemical Co., Ltd.) and 0.1 part by mass of Nasem Aluminum (manufactured by Nippon Chemical Industry Co., Ltd.) A lip cosmetic cover patch was prepared in the same manner as in Example 4 except that “acrylic 3” was sometimes used. This patch for lip cosmetic cover was evaluated for color transfer, durability, inconspicuousness and uncomfortable feeling, adhesive strength against bakelite board after lip balm application, adhesive strength against bakelite board without lip balm and probe tack Was measured. The evaluation and measurement results are shown in Table 2.

[Example 6]
Instead of the acrylic pressure-sensitive adhesive 2, TETRAD is used as a crosslinking agent with respect to 100 parts by mass of an alkyl acrylate copolymer comprising 2-ethylhexyl acrylate / vinyl acetate / acrylic acid (mass ratio 85/11/4). (Registered Trademark) X 0.02 parts by mass (Mitsubishi Gas Chemical Co., Ltd.) added acrylic pressure-sensitive adhesive (hereinafter referred to as “acrylic pressure-sensitive adhesive 4”, or simply “acrylic 4”) A lip cosmetic cover patch was prepared in the same manner as in Example 4 except that the lip cosmetic cover was used. This patch for lip cosmetic cover was evaluated for color transfer, durability, inconspicuousness and uncomfortable feeling, adhesive strength against bakelite board after lip balm application, adhesive strength against bakelite board without lip balm and probe tack Was measured. The evaluation and measurement results are shown in Table 2.

[Example 7]
Instead of the acrylic pressure-sensitive adhesive 2, isononyl acrylate / acrylic acid-nonaethylene glycol methyl ether [CH ₂ ═CHCOO— (CH ₂ CH ₂ O) ₉ CH ₃ ] / acrylic acid-nonaethylene glycol ester [CH ₂ = Coronate (registered trademark) L0.8 mass as a cross-linking agent with respect to 100 mass parts of an acrylic acid alkyl ester copolymer comprising CHCOO- (CH ₂ CH ₂ O) ₉ H] (mass ratio 83/16/1) Part (manufactured by Nippon Polyurethane Industry Co., Ltd.) was used, and an acrylic pressure-sensitive adhesive (hereinafter sometimes referred to as “acrylic pressure-sensitive adhesive 5” or simply “acrylic 5”) was used. Except for this, a lip cosmetic cover patch was prepared in the same manner as in Example 4. This patch for lip cosmetic cover was evaluated for color transfer, durability, inconspicuousness and uncomfortable feeling, adhesive strength against bakelite board after lip balm application, adhesive strength against bakelite board without lip balm and probe tack Was measured. The evaluation and measurement results are shown in Table 2.

[Example 8]
On one side of the release sheet forming the separator layer, an ethyl acetate solution of acrylic pressure-sensitive adhesive 1 is applied by a bar coating method so that the thickness after drying is 20 μm, and then dried to separate the separator layer and the pressure-sensitive adhesive layer. A lip cosmetic cover patch was prepared in the same manner as in Example 1 except that a laminate comprising: This patch for lip cosmetic cover was evaluated for color transfer, durability, inconspicuousness and uncomfortable feeling, adhesive strength against bakelite board after lip balm application, adhesive strength against bakelite board without lip balm and probe tack Was measured. The evaluation and measurement results are shown in Table 2.

[Example 9]
Bar coating method for forming a carrier layer, on a polyethylene-side surface of polyethylene-laminated fine paper, a polyether-type polyurethane elastomer solution for forming a support layer is dried to a thickness of 10 μm. A lip cosmetic cover patch was prepared in the same manner as in Example 2 except that a laminate comprising a carrier layer and a support layer was prepared. This patch for lip cosmetic cover was evaluated for color transfer, durability, inconspicuousness and uncomfortable feeling, adhesive strength against bakelite board after lip balm application, adhesive strength against bakelite board without lip balm and probe tack Was measured. The evaluation and measurement results are shown in Table 2.

[Example 10]
Bar coating method for forming a carrier layer, on a polyethylene-side surface of polyethylene laminated laminar paper, a polyether type polyurethane elastomer solution for forming a support layer is dried to a thickness of 20 μm. A lip cosmetic cover patch was prepared in the same manner as in Example 1 except that a laminate comprising a carrier layer and a support layer was prepared. This patch for lip cosmetic cover was evaluated for color transfer, durability, inconspicuousness and uncomfortable feeling, adhesive strength against bakelite board after lip balm application, adhesive strength against bakelite board without lip balm and probe tack Was measured. The evaluation and measurement results are shown in Table 2.

[Example 11]
Bar coating method for forming a carrier layer, on a polyethylene-side surface of polyethylene laminated laminar paper, a polyether type polyurethane elastomer solution for forming a support layer is dried to a thickness of 20 μm. A lip cosmetic cover patch was prepared in the same manner as in Example 8, except that a laminate comprising a carrier layer and a support layer was prepared. This patch for lip cosmetic cover was evaluated for color transfer, durability, inconspicuousness and uncomfortable feeling, adhesive strength against bakelite board after lip balm application, adhesive strength against bakelite board without lip balm and probe tack Was measured. The evaluation and measurement results are shown in Table 2.

[Example 12]
Bar coating method for forming a carrier layer, on a polyethylene-side surface of polyethylene-laminated fine paper, a polyether type polyurethane elastomer solution for forming a support layer is dried to a thickness of 30 μm. And then dried to prepare a laminate composed of a carrier layer and a support layer, and on one side of the release sheet forming the separator layer, the acrylic acid alkyl ester copolymer is contained. Example 1 except that a solution of ethyl acetate was applied by a bar coating method so that the thickness after drying was 30 μm and then dried to prepare a laminate composed of a separator layer and an adhesive layer In the same manner as in Example 1, a lip cosmetic cover patch was prepared. This patch for lip cosmetic cover was evaluated for color transfer, durability, inconspicuousness and uncomfortable feeling, adhesive strength against bakelite board after lip balm application, adhesive strength against bakelite board without lip balm and probe tack Was measured. The evaluation and measurement results are shown in Table 2.

[Example 13]
Styrene-isoprene-styrene block copolymer rubber (JSR SIS 5229, manufactured by JSR Corporation) instead of acrylic adhesive 1 in ethyl acetate solution: Rosin resin (Pine Crystal (registered trademark) KE-311, Arakawa Chemical Industries) Co., Ltd.]: Polybutene (Nisseki Polybutene HV-300, manufactured by JX Nippon Mining & Energy Corporation) = 1: 1: 1 toluene: hexane (1: 1) solution (concentration is about 20% by mass). Except for this, a lip cosmetic cover patch was prepared in the same manner as in Example 1. This patch for lip cosmetic cover was evaluated for color transfer, durability, inconspicuousness and uncomfortable feeling, adhesive strength against bakelite board after lip balm application, adhesive strength against bakelite board without lip balm and probe tack Was measured. The evaluation and measurement results are shown in Table 2.

[Example 14]
Lip cosmetics in the same manner as in Example 1 except that a toluene solution of a polyether polyurethane prepolymer (concentration is about 22% by mass) was used instead of the ethyl acetate solution of acrylic adhesive 1 A cover patch was prepared. This patch for lip cosmetic cover was evaluated for color transfer, durability, inconspicuousness and uncomfortable feeling, adhesive strength against bakelite board after lip balm application, adhesive strength against bakelite board without lip balm and probe tack Was measured. The evaluation and measurement results are shown in Table 2.

[Comparative Example 1]
Instead of sticking the lip cosmetic cover patch on the lip to which lip balm has been applied in advance, a commercially available lip overcoat (trade name: Anna Sui Lip Color Top Coat) is used as a lip having the composition described in Table 1 above. The cream was applied to the lips (upper lip and lower lip) pre-applied, and the color transfer and durability were evaluated. The sustainability in Comparative Example 1 was evaluated according to the evaluation criteria for the persistence of adhesion in the Examples by visually observing the peeled state of the lip overcoat. The evaluation results are shown in Table 2.

From the results of Table 2, the lip cosmetic cover patch of Examples 1 to 14 comprising a carrier layer, a support layer, a pressure-sensitive adhesive layer and a separator layer laminated in this order are applied to the lips to which lip balm has been applied in advance. From pasting to 7 hours after eating, it was found that there was no color transfer of the lip cream at the site where the patch was applied, and the color transfer of the lip cosmetic was completely suppressed. In addition, it was found that the adhesive materials for lip cosmetic covers of Examples 1 to 14 have the adhesion persistence with no problem in use.

Further, the thickness of the support layer is in the range of 1 to 13 μm, the thickness of the pressure-sensitive adhesive layer is in the range of 3 to 23 μm, and the total thickness of the support layer and the pressure-sensitive adhesive layer is in the range of 4 to 36 μm. The adhesive materials for lip cosmetic cover Nos. 9, 13 and 14 have a probe tack in an appropriate range of 0.2 to 1 N / 5 mmφ, and are less noticeable at the application site where there is no problem in use and uncomfortable feeling during application. It turned out that it has.

Among them, the adhesives for lip cosmetic covers of Examples 1 to 6 and 8 in which the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer is an acrylic pressure-sensitive adhesive have no color transfer of lip balm and extremely excellent adhesion persistence. It was found to be a patch for lip cosmetic cover.

In particular, in the lip cosmetic cover patch in which the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer is an acrylic pressure-sensitive adhesive, the composition of the acrylic pressure-sensitive adhesive and the like are appropriately adjusted as in Examples 4 to 6 and 8. Makes it easy to obtain a patch for a lip cosmetic cover that has no color transfer of the lip balm, excellent adhesion persistence, extremely inconspicuous sticking, and very little discomfort during application. I understood that.

On the other hand, in the case where the commercially available lip overcoat of Comparative Example 1 was applied, the persistence after eating and after 7 hours was similar to that of the example, but the color transfer of the lip balm was sufficiently suppressed. It turns out that it cannot be said that it is done. In particular, when compared to the lip cosmetic cover patch of Examples 4 to 6 of the present invention, it is easy to take with meals in view of the sustainability after meals. It was found that the covering method and its means were insufficient.

The present invention suppresses the color transfer of lip cosmetics such as lipstick by being a patch for a lip cosmetic cover characterized by comprising a support layer, an adhesive layer and a separator layer laminated in this order, It is possible to improve the sustainability of the makeup effect of lip cosmetics such as lipsticks, and to provide a method and means for covering lip cosmetics such as lipsticks that are excellent in usability. Is expensive.

The present invention also provides the color of lip cosmetics such as lipsticks by using the above-mentioned patch for covering lip cosmetics that covers 40 to 120% of the area of at least one of the upper lip and the lower lip. It is possible to suppress the transfer, improve the sustainability of the makeup effect of lip cosmetics such as lipsticks, and provide a method for covering lip cosmetics such as lipsticks with excellent usability, so that it can be used industrially High nature.

Furthermore, the present invention includes a step of forming a pressure-sensitive adhesive layer by applying a pressure-sensitive adhesive on the upper surface of the separator layer, and preferably further including a step of forming a support layer on the upper surface of the carrier layer by a solution casting method. Since it is a manufacturing method of the adhesive material for lip cosmetic covers described above, it is possible to provide a method for easily manufacturing the adhesive material for lip cosmetic covers, so that the industrial applicability is high.

1: Patch material for lip cosmetic cover S: Slit

Claims

A patch for a lip cosmetic cover, comprising a support layer, an adhesive layer and a separator layer laminated in this order.
2. The lip according to claim 1, wherein the thickness of the support layer is in the range of 1 to 35 μm, the thickness of the pressure-sensitive adhesive layer is in the range of 1 to 35 μm, and the total thickness of the support layer and the pressure-sensitive adhesive layer is in the range of 2 to 70 μm. Cosmetic cover patch.
The lip according to claim 1, wherein the thickness of the support layer is in the range of 1 to 13 µm, the thickness of the adhesive layer is in the range of 3 to 23 µm, and the total thickness of the support layer and the adhesive layer is in the range of 4 to 36 µm. Cosmetic cover patch.
The lip cosmetic cover adhesive according to any one of claims 1 to 3, wherein the adhesive strength to the bakelite plate after applying the lip balm (after 20 minutes of pressure bonding) is in the range of 0.03 to 1.2 N / 15 mm. Wood.
The patch for a lip cosmetic cover according to any one of claims 1 to 4, wherein the probe tack is in the range of 0.2 to 3 N / 5 mmφ.
The pressure-sensitive adhesive forming the pressure-sensitive adhesive layer contains at least one selected from the group consisting of acrylic pressure-sensitive adhesives, rubber-based pressure-sensitive adhesives, urethane-based pressure-sensitive adhesives, and silicone-based pressure-sensitive adhesives. The patch for a lip cosmetic cover according to Item.
The adhesive for covering a lip cosmetic cover according to any one of claims 1 to 6, wherein the adhesive forming the adhesive layer contains a (meth) acrylic acid alkyl ester copolymer.
The pressure-sensitive adhesive forming the pressure-sensitive adhesive layer is
a) (meth) acrylic acid alkyl ester having an alkyl group having 8 to 12 carbon atoms, 50 to 99% by mass, and b) other vinyl monomers copolymerizable with the (meth) acrylic acid alkyl ester 1 to 50 The total of the (meth) acrylic acid alkyl ester copolymer consisting of mass% (provided that a) and b) are 100 mass%. The adhesive material for lip cosmetic cover according to any one of claims 1 to 7, which is an acrylic pressure-sensitive adhesive containing
B) The adhesive material for a lip cosmetic cover according to claim 8, wherein the other vinyl monomer copolymerizable with the alkyl (meth) acrylate is a vinyl monomer having a functional group.
The adhesive material for a lip cosmetic cover according to any one of claims 1 to 9, wherein the support layer is formed of a polyurethane elastomer.
The lip cosmetic cover patch according to any one of claims 1 to 10, wherein a surface of the support layer opposite to the pressure-sensitive adhesive layer is matted.
12. The printing according to claim 1, wherein printing is performed on at least one of the surface of the support layer facing the pressure-sensitive adhesive layer or the surface of the support layer opposite to the pressure-sensitive adhesive layer. Patch for lip cosmetic cover.
The patch for a lip cosmetic cover according to any one of claims 1 to 12, wherein the support layer is a transparent layer.
The lip cosmetic cover patch according to any one of claims 1 to 13, wherein the support layer is a pattern layer.
The lip cosmetic cover patch according to claim 14, wherein the pattern layer is subjected to pattern printing.
The patch for a lip cosmetic cover according to claim 14, wherein the pattern layer contains a pigment.
The adhesive material for a lip cosmetic cover according to any one of claims 1 to 16, wherein the area of the separator layer is larger than the area of the support layer.
A plurality of laminates including a support layer and an adhesive layer adjacent to each other are arranged and laminated in parallel on at least one surface of one separator layer so that the adhesive layer faces the separator layer. The patch for a lip cosmetic cover according to any one of claims 1 to 17.
The lip cosmetic cover patch according to any one of claims 1 to 18, further comprising a carrier layer on a surface of the support layer opposite to the pressure-sensitive adhesive layer.
The lip cosmetic cover patch according to claim 19, wherein the carrier layer has one or more slits.
The lip cosmetic cover patch according to claim 19 or 20, wherein the carrier layer has a slit in a direction perpendicular to the longitudinal direction of the lip cosmetic cover patch.
The adhesive material for a lip cosmetic cover according to any one of claims 19 to 21, wherein the area of the carrier layer is larger than the area of the support layer.
The lip cosmetic cover patch according to any one of claims 1 to 22, wherein the support layer has a shape selected from the group consisting of a lip shape, an oval shape, and a crescent shape.
The use of the adhesive material for a lip cosmetic cover according to any one of claims 1 to 23, wherein the adhesive is applied so as to cover 40 to 120% of the area of at least one of the upper lip and the lower lip.
25. The lip cosmetic cover patch according to claim 24, wherein the lip cosmetic is selected from the group consisting of lipstick, lipstick, lip gloss, lip crayon, lip liner, lip balm, lip balm, lip treatment and lip overcoat. use.
26. Use of the lip cosmetic cover patch according to claim 24 or 25, wherein the lip cosmetic is selected from the group consisting of a solid form, an ointment form, a paste form, a cream form, a gel form and a liquid form.
Use of the adhesive material for a lip cosmetic cover according to any one of claims 24 to 26, which is used in a set of two sheets for upper lip and lower lip.
The method for producing a patch for a lip cosmetic cover according to any one of claims 1 to 23, comprising a step of forming a pressure-sensitive adhesive layer by applying a pressure-sensitive adhesive to the upper surface of the separator layer.
The method for producing a patch for a lip cosmetic cover according to claim 28, comprising a step of forming a support layer on the upper surface of the carrier layer by a solution casting method.