JP4322970B2 - Wrinkled stretch adhesive sheet - Google Patents

Description

【００７６】
［複素弾性率の測定］
実施例１〜５および比較例のシワ伸ばし接着シートにおける接着剤層について、温度３５℃および周波数１Ｈｚにおける歪み０．１％での測定条件下において、粘弾性測定装置（ＲＤＳ−II ダイナミック・スペクトロメータ、レオメトリックスファーイースト株式会社製）を使用し、歪み０．１％における複素弾性率を求めた。その結果を下記表２に示す。
【００７７】
【表２】

【００７８】
［シワ伸ばし効果の確認テスト］
実施例１〜５および比較例のシワ伸ばし接着シートから剥離シートを除去し、接着剤層表面を水で濡らした後、洗顔後の額のシワ部を伸ばした状態で貼付（床寝中、６時間以上）し、朝起床したら水を付けて剥がすという作業を、被試験者（女性１０名、年齢３５才〜５２才）に対し２週間に渡り毎日行った。
【００７９】
２週間の貼付テスト終了後、被試験者の主観により、シワ伸ばし効果有り（シワが浅くなった、シワが薄くなった）または効果無しを聞いた。その集計結果を下記表３に示す。
【００８０】
【表３】

【００８１】
表３に示すように、実施例１〜５のシワ伸ばし接着シートは、いずれも、優れたシワ伸ばし効果を発揮することが確認された。また、シワ伸ばし接着シートを使用後、かぶれ、湿疹等の異常が現れる者もいなかった。
【００８２】
【発明の効果】
以上述べたように、本発明によれば、優れたシワ伸ばし効果が得られる。また、皮膚への刺激も少なく、安全性が極めて高い。
【００８３】
また、シワ伸ばし接着シートの製造も容易である。特に、接着剤層を均一に形成することができるとともに、接着剤層の複素弾性率等の特性や厚さ等の条件を容易にコントロールすることができる。
【図面の簡単な説明】
【図１】本発明のシワ伸ばし接着シートの構成例を示す斜視図である。
【図２】図１中のＡ−Ａ線断面図である。
【符号の説明】
１ シワ伸ばし接着シート
２ 基材層
３ 接着剤層
４ 剥離シート
５ ミシン目[0001]
[Technical field to which the invention belongs]
The present invention relates to a wrinkle-stretching adhesive sheet for stretching skin wrinkles.
[0002]
[Prior art]
Conventionally, as a method for reducing skin wrinkles, a method for activating skin and a method for physically stretching wrinkles have been proposed.
[0003]
The following methods are known as methods for activating the skin.
Japanese Utility Model Laid-Open No. 61-48723 discloses a method of alternately cooling and heating the skin to promote metabolism, and Japanese Utility Model Laid-Open No. 60-195617 uses a gas-impermeable surface base material. A method for blocking air with a tape is disclosed, and Japanese Utility Model Laid-Open No. 61-188517 discloses a method for sticking a sheet coated with an adhesive containing vitamin E on a flexible surface base. -130112 discloses a method of applying a collagen-coated film.
[0004]
However, in order to reduce wrinkles actually generated on the skin, it is necessary to activate the skin, but it is important to hold and fix the wrinkles in a physically stretched state.
[0005]
Japanese Utility Model Laid-Open No. 62-16882 discloses a method of stretching wrinkles with a tape obtained by applying an adhesive to a wet shrinkable nonwoven fabric. However, in this method, since it is difficult to hold and fix the tape to the skin for a long time, a sufficient wrinkle stretching effect cannot be obtained.
[0006]
[Problems to be solved by the invention]
An object of the present invention is to provide a wrinkle-stretching adhesive sheet that is securely adhered and fixed to the skin and has a high wrinkle-stretching effect.
[0007]
[Means for Solving the Problems]
Such an object is achieved by the present inventions (1) to (6) below.
[0008]
(1) a base material layer made of paper having air permeability and flexibility;
A wrinkle-stretching adhesive sheet formed by laminating at least an adhesive layer containing a water-soluble or water-swelling polymer material and a plasticizer,
The polymer material is mainly composed of an N-vinyl-2-pyrrolidone-vinyl acetate copolymer having an average molecular weight of 2 to 200,000, and
The plasticizer content in the adhesive layer is 0.01 to 30 wt%,
The adhesive layer has a complex elastic modulus of 5 × 10 ^{6 to} 5 × 10 ⁹ dyne / cm ² at a strain of 0.1% at a temperature of 35 ° C. and a frequency of 1 Hz.
[0009]
(2) The wrinkle-stretching adhesive sheet according to (1), wherein a copolymerization ratio in the N-vinyl-2-pyrrolidone-vinyl acetate copolymer is 5:95 to 95: 5.
[0010]
(3) a base material layer made of paper having air permeability and flexibility;
A wrinkle-stretching adhesive sheet formed by laminating at least an adhesive layer containing a water-soluble or water-swelling polymer material and a plasticizer,
The polymer material is mainly composed of polyvinylpyrrolidone having an average molecular weight of 2 to 200,000, and
The plasticizer content in the adhesive layer is 0.01 to 30 wt%,
The adhesive layer has a complex elastic modulus of 5 × 10 ^{6 to} 5 × 10 ⁹ dyne / cm ² at a strain of 0.1% at a temperature of 35 ° C. and a frequency of 1 Hz.
[0011]
(4) a base material layer made of paper having air permeability and flexibility;
A wrinkle-stretching adhesive sheet formed by laminating at least an adhesive layer containing a water-soluble or water-swelling polymer material and a plasticizer,
The polymer material is mainly composed of polyacrylic acid having an average molecular weight of 2 to 200,000, and
The plasticizer content in the adhesive layer is 0.01 to 30 wt%,
The adhesive layer has a complex elastic modulus of 5 × 10 ^{6 to} 5 × 10 ⁹ dyne / cm ² at a strain of 0.1% at a temperature of 35 ° C. and a frequency of 1 Hz.
[0012]
(5) The wrinkle-stretching adhesive sheet according to any one of (1) to (4), wherein a skin activator is contained in the adhesive layer.
(6) The wrinkle-stretching adhesive sheet according to any one of (1) to (5), wherein the base material layer is made of kraft paper.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the wrinkle-stretching adhesive sheet of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.
[0015]
FIG. 1 is a perspective view showing a configuration of a wrinkle-stretching adhesive sheet of the present invention, and FIG. 2 is a cross-sectional view taken along line AA in FIG. 1 and 2 exaggerate the thickness direction of the wrinkle-stretching adhesive sheet. As shown in these drawings, the wrinkle-stretching adhesive sheet 1 of the present invention is obtained by laminating a base material layer 2 and an adhesive layer 3. Furthermore, in this embodiment, the release sheet 4 is bonded to the adhesive layer 3. Hereinafter, the configuration of each layer will be described.
[0016]
The base material layer 2 has predetermined air permeability and flexibility (softness). As such a base material layer 2, what was comprised with the porous material is mentioned. Examples of the porous material include non-fibrous or fibrous porous materials.
[0017]
Examples of non-fibrous porous materials include membrane filters, foams (foamed polypropylene, foamed polyethylene, foamed polyurethane, etc.), various porous films, meshes, and the like.
[0018]
Examples of the fibrous porous material include woven and knitted fabrics, nonwoven fabrics, papers, aggregates of short fibers, and the like. Here, the woven or knitted fabric includes a woven fabric such as a woven fabric, a knitted fabric, or the like. As the woven fabric, all kinds of practically used materials such as plain weave, oblique weave, and satin weave can be used. Further, the knitted fabric structure is not particularly limited, and examples thereof include weft knitting (flat knitting), warp knitting (tricot knitting), circular knitting, flat knitting, and knitting.
When using a nonwoven fabric, the fiber packing density (bulk density) and the like are not particularly limited.
[0019]
As papers, normal paper materials (Western paper, Japanese paper) or laminates thereof, and various synthetic papers can be used. Particularly preferred specific examples include fine paper, kraft paper, coated paper, impregnated paper and the like.
[0020]
Examples of fibers constituting such a fibrous porous material include natural fibers such as wood pulp, cellulose fibers, cotton, linter, kapok, flax, hemp, ramie, silk, wool, nylon (polyamide), tetron, Examples thereof include chemical fibers such as rayon, cupra, acetate, vinylon, acrylic, polyethylene terephthalate (polyester), and polypropylene, or combinations of two or more of these natural and chemical fibers (mixed spinning, etc.).
[0021]
It is preferable that such a base material layer 2 itself has air permeability. The reason for this is that when an adhesive layer 3 described later is attached to the skin, a solvent such as moisture impregnated in the adhesive layer 3 permeates the base material layer 2 and evaporates, and the adhesive layer 3 is dried. This is to make (adhesion force generation) quick and to make the sticky feeling good without sweating.
[0022]
Moreover, the base material layer 2 has flexibility. The reason is that, when the wrinkle-stretching adhesive sheet 1 is attached to, for example, a curved portion of the face (for example, around the eyes or nose), followability and adhesion to the curved surface are ensured. Thereby, combined with the composition and characteristics of the adhesive layer 3 described later, excellent wrinkle elongation can be obtained.
[0023]
Although the thickness of the base material layer 2 is suitably determined according to the material etc., it is usually preferably about 50 to 1000 μm, and more preferably about 100 to 500 μm.
The base material layer 2 can be printed or dyed.
[0024]
The adhesive layer 3 is mainly composed of a polymer material having water solubility or water swellability, and has rewetting properties.
[0025]
This adhesive layer 3 has a characteristic that the complex elastic modulus at a temperature of 35 ° C. and a strain of 0.1% at a frequency of 1 Hz is 5 × 10 ^{6 to} 5 × 10 ⁹ dyne / cm ^2. The rate is preferably 1 × 10 ^{7 to} 5 × 10 ⁹ dyne / cm ² .
[0026]
Here, the complex elastic modulus is used as an index representing viscoelasticity and has dependence on temperature and frequency.
[0027]
If the complex elastic modulus is less than 5 × 10 ⁶ dyne / cm ² , the adhesive layer 3 may not be sufficiently adhered and fixed to the skin, and the wrinkled state may not be maintained for a long time. It becomes easy.
[0028]
If the complex elastic modulus exceeds 5 × 10 ⁹ dyne / cm ² , defects such as cracks are likely to occur on the surface of the adhesive layer 3 when the wrinkled stretched adhesive sheet 1 is stored.
[0029]
The complex elastic modulus of the adhesive layer 3 depends on the selection of various conditions such as the composition of the polymer material constituting the adhesive layer 3 and the average molecular weight (degree of polymerization), the amount of plasticizer added, and the water content. Adjust as appropriate.
[0030]
The adhesive (polymer material) constituting the adhesive layer 3 is made of N-vinyl-2-pyrrolidone-vinyl acetate copolymer, polyvinyl pyrrolidone, or polyacrylic acid. Further, those having an N-vinyl-2-pyrrolidone-vinyl acetate copolymer as a main component are particularly preferred. When these are used, it is easy to form the adhesive layer 3 (excellent processability), and there is little irritation to the skin, and the safety is extremely high.
[0031]
The copolymerization ratio in the N-vinyl-2-pyrrolidone-vinyl acetate copolymer can be selected in an arbitrary range, but is preferably in the range of 5:95 to 95: 5, and in the range of 15:85 to 85:15. Is more preferable, and the range of 30:70 to 70:30 is more preferable. In such a range, a particularly good wrinkle stretching effect is exhibited.
[0032]
The N-vinyl-2-pyrrolidone-vinyl acetate copolymer may be any copolymer such as a random copolymer, a block copolymer, and a graft copolymer.
[0033]
Further, when the main component is an N-vinyl-2-pyrrolidone-vinyl acetate copolymer, it further contains either or both of a vinyl acetate homopolymer and an N-vinyl-2-pyrrolidone homopolymer. May be.
[0034]
The average molecular weight of a polymer material typified by such an N-vinyl-2-pyrrolidone-vinyl acetate copolymer is 20,000 to 200,000. When this average molecular weight is too small, the adhesion to the skin is lowered. On the other hand, if the average molecular weight is too large, the solubility in water becomes low, and it tends to take a long time to obtain sufficient adhesion strength to the skin.
[0035]
In the adhesive layer 3, various plasticizers as described below are added. As the plasticizer, the following substances are preferably used.
[0036]
That is, as the plasticizer, for example, butanediol such as ethylene glycol, diethylene glycol, triethylene glycol, higher polyethylene glycol, propylene glycol, higher polypropylene glycol, 1,3-butanediol, 1,4-butanediol, etc. , Glycerol, diglycerol, triglycerol, polyhydric alcohols such as polyglycerol, glycerol fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkyl ether A surfactant such as can be used.
[0037]
The content of the plasticizer in the adhesive layer 3 is 0.01 to 30 wt%, and preferably about 1 to 20 wt%. If the plasticizer content is too small, depending on the composition, average molecular weight, content, etc. of the polymer material, the adhesive layer 3 may harden, cracks, etc., resulting in poor handling. If the content of the plasticizer is too large, the adhesive layer 3 is softened depending on the composition, average molecular weight, content, etc. of the polymer material, the adhesive strength to the skin is lowered, and the wrinkle stretching effect is insufficient. It becomes.
[0038]
In addition, various skin activators as described below may be added to the adhesive layer 3 as necessary.
[0039]
Examples of skin activators include various proteins such as collagen and yeast extract, various vitamins such as vitamins A, B, C, D, E, and K, various natural acids such as various amino acids, carrot extract, and aloe extract. Examples include a product extract and a placenta extract, which can be added singly or in combination.
[0040]
The content of the skin activating agent in the adhesive layer 3 is not particularly limited, but is preferably about 0.01 to 8 wt%, more preferably about 0.1 to 4 wt%. If the skin activator content is too low, sufficient skin activation effects cannot be obtained. If the skin activator content is too high, the adhesive strength to the skin is reduced and the wrinkle removing effect is reduced. It becomes insufficient.
[0041]
Further, a filler may be added to the adhesive layer 3 as necessary. A typical example of the filler is a pigment. Examples of the pigment include inorganic pigments such as talc, sericite, calcium carbonate, kaolin, silicic anhydride, hydrous silicic acid, titanium oxide, and mica titanium, and powders such as polyamide, polyethylene, cellulose, and polymethyl methacrylate ( In particular, organic pigments such as spherical powder), and those obtained by subjecting these to hydrophobic treatment with metal soap, ester, silicone, or the like.
[0042]
Other additives include, for example, preservatives, bactericides, antioxidants, flame retardants, moisturizers, fragrances and the like, and these are in amounts that do not hinder the adhesive function of the adhesive layer 3. Can be added.
[0043]
Further, the adhesive layer 3 may contain, for example, a solvent (or dispersion medium) added in the process of preparing the adhesive. Examples of such a solvent (or dispersion medium) include water (inorganic solvent) and lower alcohols (organic solvents) such as ethanol and isopropanol, and one or more of these can be used.
[0044]
The content of the solvent, particularly water, in the adhesive layer 3 is preferably 25 wt% or less, and more preferably 15 wt% or less. In particular, the content of such a solvent may be extremely small.
[0045]
The thickness of the adhesive layer 3 is not particularly limited, but is usually preferably 10 to 300 μm, more preferably about 20 to 140 μm. If the thickness of the adhesive layer 3 is too thin, depending on the forming method and forming conditions of the adhesive layer 3, the adhesive strength may become non-uniform, and the wrinkle stretching effect may be reduced. When the thickness is too thick, when the adhesive layer 3 is formed, the time required for drying becomes long, and foaming or the like easily occurs.
[0046]
The base material layer 2 and the adhesive layer 3 as described above are bonded (adhered) with a predetermined adhesive force.
[0047]
In the present invention, it is preferable that the adhesive which is a constituent material of the adhesive layer 3 is impregnated or embedded in a part of the base material layer 3 (a part in the thickness direction). Thereby, it is possible to obtain a high adhesive force between the base material layer 2 and the adhesive layer 3 with a simple layer configuration (simple manufacturing process), and the adhesive when the wrinkle-stretching adhesive sheet 1 is peeled off from the skin. Residual on skin is suppressed.
[0048]
Any known release sheet 4 may be used. For example, a release coating layer (for example, a silicone layer) may be formed on the bonding surface of the release sheet 4 to the adhesive layer 3 of the base material. What gave the process can be used. Examples of the base material of the release sheet 4 include a paper film such as glassine paper, a synthetic film, a resin film made of polyethylene, polypropylene, polyester, and the like.
[0049]
In this embodiment shown in FIG. 1 and FIG. 2, the base material layer 2 and the adhesive layer 3 are punched in a substantially rhombus shape, and a perforation 5 is formed in the center, and these are easily divided into a plurality of pieces. Can be done. At the time of use, the base material layer 2 and the adhesive layer 3 can be divided into two by the perforation 5, and they can be adhered to the corners of the eyes and the eyebrows, respectively. Moreover, it can also be used as one unit without being divided.
[0050]
A method for producing such a wrinkle-stretching adhesive sheet 1 (particularly, a method for forming the adhesive layer 3) is not particularly limited, but the adhesive layer 3 is directly used for reasons such as ease of formation, stability, and productivity. It is preferably formed by a method or a transfer method.
[0051]
In the direct method and the transfer method, the adhesive layer 3 can be formed easily and appropriately, and a high adhesive force between the base material layer 2 and the adhesive layer 3 can be easily obtained, and the layer structure can be controlled. Has the advantage of easy. Examples of the production method by both methods will be described in detail below.
[0052]
As a direct manufacturing method, first, an adhesive coating solution for forming the adhesive layer 3 is prepared. The adhesive coating liquid is prepared by mixing a predetermined amount of the above-described polymer material, other additives added as necessary, inorganic and / or organic solvents (dispersion media), and stirring. The viscosity of the adhesive coating solution is, for example, about 100 to 5000 cps.
[0053]
Next, this adhesive coating solution is applied to one side of the base material layer 2 and dried. Thereby, the laminated body of the base material layer 2 and the adhesive bond layer 3 is obtained. As a coating method, for example, any method such as coating using a roll, an air knife, a knife, a roll knife, a gravure, a Meyer bar, a fountain die, spray coating, brushing, dipping, etc. may be used.
[0054]
The base material layer 2 can be subjected in advance to a hydrophilic treatment, a hydrophobic (water repellency) treatment, or the like according to its constituent materials and surfaces.
[0055]
In addition, as a transfer method production method, an adhesive coating solution is prepared in the same manner as described above, and this adhesive coating solution is applied to the surface of a transfer body such as a film or sheet and dried to form an adhesive layer 3. To do.
[0056]
Next, the adhesive layer 3 is superimposed on the base material layer 2, the transfer body is removed, and the adhesive layer 3 is transferred to the surface of the base material layer 2. Thereby, the laminated body of the base material layer 2 and the adhesive bond layer 3 is obtained. When the transfer body is the release sheet 4, after the adhesive layer 3 is overlaid on the base material layer 2, the transfer body is not removed, and it becomes the wrinkle-stretching adhesive sheet of the preferred embodiment of the present invention as it is.
[0057]
In transferring the adhesive layer 3 onto the base material layer 2, an intermediate layer such as an adhesive layer may be separately interposed between the base material layer 2 and the adhesive layer 3.
[0058]
The hydrophilic treatment and the hydrophobic (water repellent) treatment for the base material layer 2 are the same as described above.
[0059]
According to the method for producing a wrinkle-stretching adhesive sheet as described above, a wrinkle-stretching adhesive sheet having an excellent wrinkle-stretching effect can be easily produced. In particular, conditions (such as complex elastic modulus) and thickness of the adhesive layer 3 can be easily controlled, and the adhesive layer 3 can be formed to a uniform thickness. It is also highly productive and suitable for mass production.
[0060]
Next, a method for using the wrinkle-stretching adhesive sheet 1 will be described.
First, the release sheet 4 is peeled and removed from the adhesive layer 3.
[0061]
Next, the adhesive layer 3 is wetted with water (or lotion, cosmetic liquid, etc.). The adhesive layer 3 is normally in a dry state (moisture content is 25 wt% or less), but when wetted with water (when in a wet state), it absorbs water and becomes sticky, and can be attached to the skin. .
[0062]
The water-absorbing adhesive layer 3 is adhered to the skin such as the face after washing. At this time, the wrinkles of the skin are stretched by massage or the like.
[0063]
If the wrinkle-stretching adhesive sheet 1 is stuck and left for a predetermined time, the moisture evaporates to some extent and a strong adhesive force is generated. Thereby, the wrinkle-stretching adhesive sheet 1 is adhered and fixed to the skin, and this state is continued for a predetermined time (for example, 1 to 8 hours), whereby an excellent wrinkle-stretching effect is exhibited.
[0064]
When the wrinkle-stretching adhesive sheet 1 is peeled from the skin, it is wetted with water from the base material layer 2 side. Since the base material layer 2 has moisture permeability, the adhesive layer 3 absorbs water again and softens, whereby the wrinkle-stretching adhesive sheet 1 can be easily peeled from the skin.
[0065]
【Example】
Hereinafter, the present invention will be described in more detail with reference to specific examples.
[0066]
Example 1
100 g of N-vinyl-2-pyrrolidone-vinyl acetate copolymer (copolymerization ratio 60:40, average molecular weight 44000), 10 g of glycerin (plasticizer) and 100 g of water are uniformly mixed and stirred to obtain an aqueous adhesive solution (viscosity of about 1000 cps) was prepared.
[0067]
On the other hand, a kraft paper weighing 80 g / m ² (thickness 105 μm) is prepared as a base material layer, and the adhesive aqueous solution is applied to one side of the kraft paper so that the residual moisture of the adhesive layer is 5% and the thickness is 50 μm. Applied and dried.
[0068]
Thereafter, this adhesive layer was bonded to a release sheet made of a polyester film (thickness: 38 μm) subjected to one-sided release treatment by forming a silicone layer to complete a wrinkled stretched adhesive sheet.
[0069]
(Example 2)
In Example 1, except that the amount of glycerin in the aqueous adhesive solution was 20 g, an aqueous adhesive solution was prepared in the same manner as in Example 1. This adhesive aqueous solution was used as the release sheet of the same release sheet as in Example 1. On top of this, the adhesive layer was applied so that the residual moisture was 5% and the thickness was 50 μm, dried, and then laminated with a base material layer made of polyester non-woven fabric (500 μm). completed.
[0070]
(Example 3)
A wrinkle-stretching adhesive sheet was completed in the same manner as in Example 1 except that 1.0 g of vitamin E, 0.5 g of hydrolyzed collagen, and 50 g of ethanol were added to the aqueous adhesive solution.
[0071]
(Example 4)
In Example 1, a wrinkle-stretching adhesive sheet was obtained in the same manner as in Example 1 except that 100 g of polyvinylpyrrolidone (average molecular weight 45000), 20 g of glycerin, and 100 g of water were uniformly mixed and stirred. completed.
[0072]
(Example 5)
In Example 1, a wrinkle-stretching adhesive sheet was obtained in the same manner as in Example 1 except that 100 g of polyacrylic acid (average molecular weight 150,000), 10 g of glycerin, and 400 g of water were uniformly mixed and stirred. Was completed.
[0073]
(Comparative example)
In Example 5, a wrinkle-stretching adhesive sheet was completed in the same manner as in Example 5 except that the amount of glycerin in the adhesive aqueous solution was 50 g.
[0074]
The composition of the adhesive layer in Examples 1 to 5 and Comparative Example is shown in Table 1 below. In Table 1, the numbers indicate the composition (preparation amount) of the aqueous adhesive solution as the coating solution, the unit is [parts by weight], the numbers in () indicate the composition after drying the adhesive layer, and the unit Is [wt%].
[0075]
[Table 1]

[0076]
[Measurement of complex elastic modulus]
With respect to the adhesive layers in the wrinkled stretched adhesive sheets of Examples 1 to 5 and Comparative Example, a viscoelasticity measuring device (RDS-II dynamic spectrometer was measured under a measurement condition at a temperature of 35 ° C. and a strain of 0.1% at a frequency of 1 Hz. , Manufactured by Rheometrics Far East Co., Ltd.), and the complex elastic modulus at a strain of 0.1% was determined. The results are shown in Table 2 below.
[0077]
[Table 2]

[0078]
[Confirmation test of wrinkle extension effect]
The release sheet was removed from the wrinkle-stretching adhesive sheets of Examples 1 to 5 and Comparative Example, and the adhesive layer surface was wetted with water, and then the wrinkle portion of the forehead after face washing was stretched (6) After getting up in the morning, the work of adding water and peeling off was performed every day for two weeks for the test subjects (10 women, ages 35-52).
[0079]
After completion of the two-week sticking test, the subject was asked whether the wrinkle-stretching effect was present (wrinkles became shallower, wrinkles became thinner) or no effect. The tabulated results are shown in Table 3 below.
[0080]
[Table 3]

[0081]
As shown in Table 3, it was confirmed that all of the wrinkle-stretching adhesive sheets of Examples 1 to 5 exhibited an excellent wrinkle-stretching effect. Moreover, after using the wrinkle-stretching adhesive sheet, there were no people who showed abnormalities such as rash and eczema.
[0082]
【The invention's effect】
As described above, according to the present invention, an excellent wrinkle stretching effect can be obtained. In addition, there is little irritation to the skin and the safety is extremely high.
[0083]
Moreover, it is easy to produce a wrinkled stretch adhesive sheet. In particular, the adhesive layer can be formed uniformly, and the properties such as the complex elastic modulus and the thickness of the adhesive layer can be easily controlled.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration example of a wrinkle-stretching adhesive sheet of the present invention.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
[Explanation of symbols]
1 Wrinkle-stretching adhesive sheet 2 Base material layer 3 Adhesive layer 4 Release sheet 5 Perforation

Claims (6)

A base material layer made of paper having air permeability and flexibility;
A wrinkle-stretching adhesive sheet formed by laminating at least an adhesive layer containing a water-soluble or water-swelling polymer material and a plasticizer,
The polymer material is mainly composed of an N-vinyl-2-pyrrolidone-vinyl acetate copolymer having an average molecular weight of 2 to 200,000, and
The plasticizer content in the adhesive layer is 0.01 to 30 wt%,
The adhesive layer has a complex elastic modulus of 5 × 10 ^{6 to} 5 × 10 ⁹ dyne / cm ² at a strain of 0.1% at a temperature of 35 ° C. and a frequency of 1 Hz.   The wrinkle-stretching adhesive sheet according to claim 1, wherein a copolymerization ratio in the N-vinyl-2-pyrrolidone-vinyl acetate copolymer is 5:95 to 95: 5. A base material layer made of paper having air permeability and flexibility;
A wrinkle-stretching adhesive sheet formed by laminating at least an adhesive layer containing a water-soluble or water-swelling polymer material and a plasticizer,
The polymer material is mainly composed of polyvinylpyrrolidone having an average molecular weight of 2 to 200,000, and
The plasticizer content in the adhesive layer is 0.01 to 30 wt%,
The adhesive layer has a complex elastic modulus of 5 × 10 ^{6 to} 5 × 10 ⁹ dyne / cm ² at a strain of 0.1% at a temperature of 35 ° C. and a frequency of 1 Hz. A base material layer made of paper having air permeability and flexibility;
A wrinkle-stretching adhesive sheet formed by laminating at least an adhesive layer containing a water-soluble or water-swelling polymer material and a plasticizer,
The polymer material is mainly composed of polyacrylic acid having an average molecular weight of 2 to 200,000, and
The plasticizer content in the adhesive layer is 0.01 to 30 wt%,
The adhesive layer has a complex elastic modulus of 5 × 10 ^{6 to} 5 × 10 ⁹ dyne / cm ² at a strain of 0.1% at a temperature of 35 ° C. and a frequency of 1 Hz.   The wrinkle-stretching adhesive sheet according to any one of claims 1 to 4, wherein a skin activator is contained in the adhesive layer. The wrinkle-stretching adhesive sheet according to any one of claims 1 to 5, wherein the base material layer is made of kraft paper.

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