JP5226948B2 - Laminated sheet and body sticking sheet - Google Patents

Description

  The present invention relates to a laminated sheet and a body sticking sheet using the same.

  Since sheet-type cosmetics can be used easily, sheet-type cosmetics impregnated with a wide variety of cosmetics have been widely used in recent years. As the sheet material, woven fabrics and nonwoven fabrics are generally used. In particular, nonwoven fabrics are used from the viewpoint of cost and ease of use, but a hydrophobic film is laminated on a substrate having water absorption for the purpose of increasing water retention. What was done is also used. For example, a sheet-type cosmetic product has been proposed in which a hydrophobic sheet-like film is adhered and formed on one side of a water-absorbing nonwoven fabric sheet by extrusion laminating, and the nonwoven fabric sheet is impregnated with cosmetics or the like (Patent Literature). 1). In Patent Document 1, a polyethylene film and a polypropylene film are used as a sheet film having hydrophobicity. These polyolefin-based films can retain moisture, but may be insufficient to retain highly volatile drugs and effect agents over several minutes to several hours.

  By the way, carbon dioxide (carbon dioxide) is known to have a blood circulation promoting effect by percutaneous absorption, and the fiber assembly layer and the film layer impregnated with an aqueous composition obtained by dissolving carbon dioxide under pressure are heat-sealed. A composite sheet is proposed (see Patent Document 2). However, in Patent Document 2, polyolefin films such as polyethylene and polypropylene are used as the film layer, and carbon dioxide gas having high volatility cannot be maintained for a long time. The polyethylene terephthalate film is characterized by being a hard resin with a high melting point. Therefore, there is a problem that the adhesion to the body is poor because it is hard, or that it is difficult to laminate with a nonwoven fabric because of its high melting point.

In order to solve such a problem, a sheet shape in which a carbon dioxide-permeable non-woven fabric carrying a solution or gel is laminated with a film having carbon dioxide permeability of 100,000 cc / m ² · day · atm (25 ° C.) or less. A body sticking sheet material in which a patch is sealed in a carbon dioxide-impermeable packaging pillow has been proposed (see Patent Document 3). Patent Document 3 also discloses an ethylene / vinyl alcohol copolymer having a high barrier property as a film material.

JP 2005-2111425 A JP 2004-238333 A JP 2005-170937 A

The present invention relates to a laminated sheet formed by laminating a liquid-impregnated substrate and a polymer film, and in the case of a highly volatile drug or effect agent by using an ethylene / vinyl alcohol copolymer as the polymer film. Even if it exists, it is based on being able to suppress volatilization effectively.
However, the ethylene / vinyl alcohol copolymer has a problem that sufficient lamination strength cannot be obtained by heat fusion with a liquid-impregnated substrate such as a polyolefin film.
The present invention provides a laminated sheet that can effectively suppress the volatilization of highly volatile drugs and effect agents and has a high lamination strength between the liquid-impregnated base material and the polymer film. The purpose is to provide.

The present inventors have found that the above-described problems can be achieved by using an ethylene / vinyl alcohol copolymer (hereinafter sometimes referred to as “EVOH”) having specific physical properties as a polymer film.
That is, the present invention is a laminated sheet obtained by laminating a liquid-impregnated base material and a polymer film, and the polymer film is melt mass flow rate (hereinafter referred to as “MFR”) 5 to 20 g / 10 minutes. The present invention provides a laminated sheet characterized by containing an ethylene / vinyl alcohol copolymer and a sheet for body sticking formed by impregnating the laminated sheet with a liquid or gel.

  According to the present invention, it is possible to provide a laminated sheet that can effectively suppress the volatilization of a highly volatile drug or effect agent and that has a high lamination strength between the liquid-impregnated substrate and the polymer film.

The laminated sheet of the present invention is formed by laminating a liquid-impregnated base material and a polymer film.
As the liquid-impregnated base material, woven fabric, non-woven fabric, knitted fabric and the like can be used, and a laminate of these can also be used. Among these, a woven fabric, a nonwoven fabric, or a knitted fabric is preferable from the viewpoint of high liquid impregnation.
More specifically, synthetic fibers such as nylon, polypropylene, polyester, polyethylene, polystyrene, polyurethane, and polyolefin, woven fabrics such as natural fibers made of silk, cotton, hemp, rayon, collagen, or non-woven fabrics. Can be used.
Among these, cotton (cotton) and rayon are particularly preferable from the viewpoint of high liquid impregnation. Moreover, since the fiber containing polyethylene is easily melted and deformed at the time of lamination, the lamination strength tends to increase.
Further, woven fabrics or nonwoven fabrics having different configurations can be used as a liquid-impregnated base material. For example, a woven fabric or non-woven fabric containing cotton or rayon that feels good on the side touching the skin, and a woven fabric or non-woven fabric containing polyethylene fibers that easily undergo hot-melt deformation are laminated on the polymer film side. .

The thickness of the liquid-impregnated substrate is preferably about 0.05 to 2 mm. When it is 0.05 mm or more, a liquid or gel described in detail later can be sufficiently impregnated. On the other hand, when it is 2 mm or less, it is preferable in that the physical discomfort is small when the body is applied, and the sheet is not easily displaced. The thickness of the liquid-impregnated substrate is particularly preferably 0.2 to 1.5 mm, more preferably 0.4 to 1.2 mm.
Further, the surface of the sheet base material may be subjected to a hydrophilic treatment or a hydrophobic treatment.

Next, the polymer film used for the laminated sheet of the present invention is characterized by containing EVOH.
EVOH is a copolymer of ethylene and vinyl alcohol, and the molar ratio of ethylene / vinyl alcohol is preferably in the range of 20/80 to 60/40. An ethylene ratio of 20 mol% or more is preferable in terms of enabling film formation by T-die extrusion in order to exhibit heat melting properties. It is preferable in that the barrier property is high.
From the above points, the ethylene / vinyl alcohol molar ratio is more preferably in the range of 30/70 to 55/45.

  EVOH used in the present invention is characterized in that the MFR is 5 to 20 g / 10 min. Within this range, sufficient strength can be obtained as a laminated sheet with a liquid-impregnated base material, and a simple method such as extruding a film with a T-die can be selected when manufacturing the sheet. . From the above points, the MFR of EVOH is more preferably in the range of 10 to 18 g / 10 minutes. The MFR is measured according to JIS K7210, and is measured under conditions of a temperature of 210 ° C. and a load of 2160 g. Moreover, lamination | strength strength is defined by the peeling force (N) at the time of peeling the polymer film in a lamination sheet from a liquid impregnation base material here. The lamination strength is measured according to JIS K6854-3.

  The polymer film of the present invention may be a single layer film made of a resin containing EVOH, or may be a multilayer film made of this and another resin. When the polymer film is a single-layer film made of a resin containing EVOH, the EVOH content in the resin is preferably in the range of 20 to 100% by mass. When the EVOH content in the resin is 20% by mass or more, the effect of EVOH, that is, the effect of suppressing volatilization of highly volatile chemicals and effect agents and the high lamination strength of the liquid-impregnated substrate and the polymer film are obtained. Can do. From the above points, the EVOH content in the resin is particularly preferably 50 to 100% by mass, and more preferably 70 to 100% by mass.

  In addition, examples of other resins used when the EVOH-containing resin is a mixture of EVOH and other resins include nylon, polypropylene, polyethylene, polyester, polystyrene, and polyurethane. Among these, nylon, Polyethylene and polypropylene are particularly preferred. Moreover, when the polymer film of this invention is a multilayer film, resin similar to the above is mentioned as resin which comprises the film which consists of said other resin. For example, if EVOH and polyethylene have a multilayer structure and are laminated so that the polyethylene side is the liquid-impregnated substrate side, an improvement in lamination strength can be expected.

  About the thickness of the polymer film of this invention, the range of 1-30 micrometers is preferable. When the thickness is 1 μm or more, volatilization of the volatile substance in the liquid or gel impregnated in the liquid-impregnable base material can be sufficiently suppressed. On the other hand, if it is 30 μm or less, it is advantageous in that the laminated sheet has a soft feel and is easy to fit on the body. From the above viewpoint, the thickness of the polymer film is more preferably in the range of 5 to 20 μm.

  Moreover, it is preferable that the area swelling rate at the time of making it contact with the water of the polymer film of this invention (measurement conditions are mentioned later) is 3% or more. If the area swelling ratio is 3% or more, it is advantageous in that the film itself becomes soft. On the other hand, although there is no particular limitation on the upper limit, it is preferable that the upper limit is 100% or less because polymers having a large area expansion coefficient may be dissolved. From the above points, the area swelling rate of the polymer film is more preferably 3 to 50%.

  As described above, the laminated sheet of the present invention is formed by laminating a liquid-impregnated base material and a polymer film, and since EVOH is contained as the polymer film, the laminated sheet is impregnated with an aqueous composition or the like. When it is made to warp, it is warped toward the liquid-impregnated substrate. Therefore, the body patch sheet of the present invention in which the laminated sheet of the present invention is impregnated with an aqueous composition or the like warps in the direction of close contact with the skin when applied to the skin. When compared, the adhesion to the skin is further improved, and it becomes difficult to peel off from the skin.

  As for the method for producing a laminated sheet of the present invention, a general-purpose method can be used as long as it is a method of laminating a liquid-impregnated base material and a polymer film. The method etc. are mentioned. In consideration of the elasticity of the sheet, particularly the adhesion and firmness when used in a body sticking sheet, a method by heat fusion without using an adhesive is preferable. Furthermore, from the viewpoint of the productivity of the laminated sheet, it is preferable to extrude and laminate the raw material for the polymer film on the liquid-impregnated substrate with a T die.

The laminated sheet of the present invention is preferably used as a body patch sheet in which a liquid-impregnated base material is impregnated with a liquid or a gel. As the liquid or gel, it is preferable to use an aqueous composition, and it is particularly preferable to use a liquid or gel in which carbon dioxide is dissolved. When a liquid or gel in which carbon dioxide is dissolved is used in the body sticking sheet of the present invention, carbon dioxide can be supplied quickly and continuously to the application site with a simple operation, and it can be sustained efficiently within the sticking time. Blood circulation promotion effect is obtained.
Here, impregnation with the gel includes an aspect in which the gel is applied to and supported on a liquid-impregnated base material.

The liquid or gel in which the above-described carbon dioxide is dissolved preferably dissolves 100 to 3,000 mass ppm of carbon dioxide at 25 ° C. When the dissolved amount of carbon dioxide is 100 mass ppm or more, a sufficient blood circulation promoting effect is obtained, and when it is 3,000 mass ppm or less, for example, the body sticking sheet of the present invention is stored in a packaging pillow. In some cases, the pressure resistance of the packaging pillow need not be considered. From the above viewpoint, the dissolved amount of carbon dioxide is preferably 100 to 2,000 mass ppm, more preferably 500 to 2,000 mass ppm, and particularly preferably 800 to 1,800 mass ppm.
The purity of carbon dioxide at this time is 50% by mass or more, preferably 70% by mass or more, particularly preferably 90% by mass or more in the gas in the packaging pillow, and the dissolved carbon dioxide concentration in the liquid or gel. It is preferable in terms of maintenance. In addition to carbon dioxide, other gases such as nitrogen gas and oxygen gas may be mixed and used depending on the purpose. In that case, the concentration of the other gas is preferably 30% by mass or less. In the present invention, the gas other than carbon dioxide is not particularly limited, but for example, air, nitrogen gas and the like are preferable. The gas pressure in the packaging pillow is 81 to 203 kPa (0.8 to 2.0 atm), more preferably 91 to 152 kPa (0.9 to 1.5 atm), particularly 91 to 122 kPa (0.9 to 1.2 atmospheres) is preferred.

Further, since carbon dioxide becomes carbonate (CO ₃ ²⁻ ) under alkaline conditions, the pH of the liquid or gel is preferably weakly acidic, particularly 3.5 to 6.5, and more preferably 4 A range of .5 to 6.5 is preferred. The water content of the liquid or gel is preferably 2% by mass or more, and particularly preferably 2-99.5% by mass. Further, the liquid or gel may be in a form containing an oil component, and the amount of water in the case of a system having a small amount of oil component, for example, an oil-in-water emulsification system or an aqueous gel is 40 to 99.5% by mass, 50-95 mass% is especially preferable. On the contrary, when the liquid or gel is a water-in-oil emulsion system or an oily gel is the main component, the water content is preferably 2 to 50% by mass, particularly 5 to 40% by mass.

When carbon dioxide is dissolved in the liquid or gel, it is preferable to contain an oil that is liquid at 25 ° C. in order to dissolve the carbon dioxide at a high concentration. This is preferable because a liquid hydrophobic substance dissolves about 3 to 6 times as much carbon dioxide as water, and a liquid oil that is incompatible with water is dispersed in water as an emulsion to maintain this solubility characteristic. And dispersed in the liquid or gel. Examples of the oil include long chain hydrocarbons, higher fatty acids, higher fatty acid esters, higher alcohols, silicones, and fluorocarbons.
These oils are preferably contained in the liquid or gel in an amount of 0.01 to 35% by mass, more preferably 0.1 to 20% by mass, particularly 1 to 15% by mass.

In addition, a skin-beautifying component, a medicinal component, etc. can be mix | blended with a liquid or gel.
Skin beautifying ingredients are components that have whitening effects, fine wrinkle / sag improvement effects, turnover improvement effects, slimming effects, moisturizing effects, astringent effects, skin softening effects, etc. Contains active substances for skin care. For example, ceramides, vitamins (such as vitamin A, vitamin B, vitamin C, vitamin D, vitamin E, and derivatives thereof), hyaluronic acid and salts thereof, chondroitin sulfate and salts thereof, tuberose polysaccharides, amino acids and derivatives thereof, Proteolytic products, organic acids such as hydroxy acids, glycoproteins such as lactoferrin, tocotrienol, astaxanthin, ubidecarenone (coenzyme Q10), alpha lipoic acid (thioctic acid), animal and plant extracts, urea, etc. Two or more kinds can be used in combination. The content of the beautiful skin component is preferably in the range of 0.01 to 20% by mass in the liquid or gel.

  Medicinal components are components in which blood circulation promoting action, anti-inflammatory analgesic action, antipruritic action, etc. are recognized, such as nicotinic acid and its salts, vitamin E and its derivatives, salicylic acid and its salts, glycyrrhizic acid and its salts, Allantoin, guaiazulene, diphenhydramine hydrochloride, lysozyme chloride and the like can be mentioned, and these can be used alone or in combination. The content of the medicinal component is preferably in the range of 0.01 to 20% by mass in the liquid or gel. Moreover, a fragrance | flavor, preservatives, such as parabens and phenoxyethanol, etc. can be mix | blended as needed.

As a method for producing a body sticking sheet of the present invention, for example, when the body sticking sheet is impregnated only with a liquid or gel, a packaging container is obtained after impregnating the liquid impregnated base material of the laminated sheet with the liquid or gel. (Pillow), or after putting a laminated sheet in a packaging container (pillow), the liquid or gel is filled, and the liquid-impregnated substrate is impregnated with the liquid or gel. In addition, when the body patch sheet further contains a gas such as carbon dioxide in addition to the liquid or gel, the gas may be dissolved in the liquid or gel in advance, but in order to maintain the solubility of the gas, it is sealed. It is sometimes necessary to replace the inside of the packaging container (pillow) with the gas (gas). Specifically, it can be produced by a method in which a laminated sheet containing a liquid or gel is placed in a packaging container (pillow), and then the air in the packaging container (pillow) is replaced with carbon dioxide. In addition, the liquid-impregnated base material of the laminated sheet is impregnated with a liquid or gel in which carbon dioxide is dissolved in advance, and then placed in the packaging container (pillow), or the carbon dioxide-dissolved liquid and the laminated sheet are individually packaged. After being put in (pillow), the air in the packaging container (pillow) can be removed, or the air in the packaging container (pillow) can be replaced with carbon dioxide. In particular, from the viewpoint of the apparatus, a method of dissolving carbon dioxide by exchanging air in the packaging container (pillow) with carbon dioxide under normal pressure is preferable.
The packaging container (pillow) is preferably made of a material having low carbon dioxide permeability. For example, a laminate film in which an aluminum foil is laminated, a laminate film having an aluminum deposited layer, a polyvinylidene chloride film, and a laminate film including a polyvinylidene chloride layer Etc.

Furthermore, the laminate sheet of the present invention can be used by impregnating a liquid or gel in which a liquid or gel or a gas such as carbon dioxide is dissolved immediately before use. As a method for generating carbon dioxide immediately before use, a method of mixing carbonate or hydrogen carbonate with an acidic component is suitable, and these components are separately contained and mixed immediately before use to contain carbon dioxide. Sheets can be prepared. The carbonate or bicarbonate before mixing or the acidic component may be present in any state of powder, dissolved in a liquid or gel, or attached to a laminated sheet.
Examples of carbonates or bicarbonates include alkali metal salts such as sodium carbonate, potassium carbonate, sodium bicarbonate and potassium bicarbonate; alkaline earth metal salts such as calcium carbonate, magnesium carbonate and magnesium bicarbonate; ammonium carbonate and hydrogen carbonate Examples include ammonium salts such as ammonium. The acid component may be any acid stronger than carbonic acid, for example, inorganic acids such as phosphoric acid, hydrochloric acid, sulfuric acid, and nitric acid; and organic acids such as oxalic acid, citric acid, malic acid, lactic acid, tartaric acid, and fumaric acid. It is done. Amino acids such as glutamic acid can also be used.

The body sticking sheet of the present invention can be used for every part of the skin for body use, and can be particularly suitably used as a face mask. When used as a face mask, it is preferable to provide a hole for the eye, a cut for the nose, a hole for the mouth, and the like.
Moreover, the sheet for body sticking of the present invention can be a pack-type cosmetic packaged one by one in one package, or a pack-type cosmetic packaged and encapsulated in one package, and further in these packages. A liquid such as a cosmetic or a gel may be enclosed at the same time.

Hereinafter, the present invention will be specifically described by way of examples.
Evaluation Method (1) Evaluation of Laminated Sheet (1-1) Laminating Strength For the laminated sheets prepared in Example 1 and Comparative Example 1, JIS K6854-3 (Adhesive-Peeling adhesive strength test method-Part 3: Measured according to T-type peeling. Specifically, the lamination strength was measured by the following method.
A FORCE GAUGE (FGX-2R) was attached to the TEST STAND (FGS-50V-H) of SHIMPO INSTRUMENT. The output of FORCE GAUGE was connected to an A / D converter, and settings were made so that data could be imported to a personal computer.
Each sheet was cut into a 3 cm × 20 cm strip so that the longitudinal direction was the MD direction. The film of several cm on one side of the strip-shaped sheet was peeled off from the liquid-impregnated base material, and the film side of the peeled part was attached to the FORCE GAUGE mounting tool and the liquid-impregnated base material side was mounted to the TEST STAND mounting tool. . About 5 cm was peeled off at a speed of 300 mm / min, and data was taken every 0.1 second at the same time.
The same operation was repeated 5 times in total, and the average value of all values was defined as the lamination strength (N) of each sheet.

(1-2) Area swelling ratio Each of the resins used in Examples 1 and 2 and Comparative Example 2 was T-die extruded at 250 ° C. to obtain a film having a thickness of 15 μm. The film was cut into 10 cm × 10 cm to prepare a film piece, placed in a desiccator containing silica gel, and dried at 25 ° C. overnight.
The length of each side of the film piece was measured to determine the area. The film piece was then immersed in water and left at 25 ° C. for 5 hours. Thereafter, the film piece is taken out of the water, immediately the length of each side is measured to determine the area, and the area increase rate with respect to the area before soaking in water ((area after soaking in water-before soaking in water) Area) / Area before immersion in water × 100) was defined as an area expansion coefficient.

(1-3) Curvature Radius About the laminated sheet produced in each of Examples 1 and 2 and Comparative Example 2, the nonwoven fabric was cut into 5 cm × 10 cm so that the MD direction of the nonwoven fabric was the long side. A clip was placed as a weight on one short side of each cut sheet and submerged in a 3L beaker filled with water. After leaving at 25 ° C. for 1 hour, the curvature of the sheet was observed from the upper surface of the beaker, and the curvature radius was determined. The radius of curvature was positive when warped on the nonwoven fabric side (when the film was on the outside) and negative when warped on the film side (nonwoven fabric was on the outside).

(2) Evaluation of body sticking sheet (2-1) Difficult to peel About body sticking sheets A-1, B-1 and E-3 produced in Example 3, Comparative Example 3, and Example 8 Ten women took out a face mask from an aluminum pillow, put it on their face for 15 minutes, and evaluated the difficulty of film peeling between wearing and removing operations according to the following criteria. The evaluation result was shown by the average score of 10 people.
(Evaluation criteria)
No peeling during use: 4
Partial peeling: 3
Most peeled: 2
Completely peeled: 1

(2-2) Carbon dioxide concentration The body patch sheets prepared in Examples 4 and 5 and Comparative Example 4 were left in a pillow at 25 ° C. for 1 week. Under an environment of 20 ° C., the sheet was taken out from the pillow and immediately opened into a half-folded sheet, and placed on a 33 ° C. plate heater with the nonwoven fabric side down. Sampling was performed after 15 minutes, and the carbon dioxide concentration in the impregnating solution was measured. The carbon dioxide concentration was measured as follows.
The sheet sample was mixed with an appropriate amount of 0.25% aqueous potassium hydroxide solution to trap carbon dioxide. 5 mL of carbon dioxide pH adjusting agent (Orion Research) was added to 50 mL of the liquid in which carbon dioxide was trapped, stirred to release carbon dioxide, and immediately measured with a carbon dioxide electrode (model 9502BN; Orion Research).

(2-3) Adhesion at the time of wearing, skin color immediately after removal of the sheet, and skin blood flow volume on cheek 10 women for the body adhesive sheets produced in Examples 6, 7, 8 and Comparative Example 5, respectively Was worn on the face for 15 minutes, and the adhesion at the time of wearing, the color of the skin immediately after removing the sheet, and the skin blood flow volume of the cheek were evaluated according to the following criteria. The evaluation result was shown by the average score of 10 people.
Adhesion at the time of mounting There is no lift or misalignment of the sheet: 4
There are slight floats and deviations: 3
There are floats and gaps: 2
There is a lot of floating and misalignment: 1

Skin color immediately after sheet removal: Visually evaluated based on the following criteria.
Clear redness: 4
Slight redness: 3
Faint redness: 2
No redness: 1

Buccal skin blood flow Measurement was performed using a Doppler blood flow meter (BIOMEDICAL SCIENCE Co., LTD LASER FLOWMETER KB-201). The value measured before applying a sheet was set to 100, the relative value was calculated | required, and it evaluated by the average value of 10 persons.

(2-4) Evaluation of moisture, dullness and firmness of skin With regard to the body sticking sheets produced in Example 6 and Comparative Example 5, 12 women continued to use for 2 weeks (once every 2 days). Carried out. Each of “moisturizing skin”, “dullness”, and “skin elasticity” was evaluated by the number of people who recognized that it was improved.

Example 1
An EVOH resin 1 (EVAL G156B (Kuraray Co., Ltd.)) having a film thickness of 15 μm on a spunlace nonwoven fabric (polyethylene terephthalate (PET) core / polyethylene (PE) sheath: rayon = 50: 50, basis weight 80 g / m ² )). ); MFR 15 g / 10 min) was T-die extruded as a single layer at 250 ° C. to produce a laminated sheet A of the present invention.
The laminated sheet was evaluated by the above methods (1-1) to (1-3). The results are shown in Table 1.

Comparative Example 1
In Example 1, instead of EVOH resin 1, EVOH resin 2 (Eval E171 (Kuraray Co., Ltd.); MFR 3.3 g / 10 min) was used in the same manner as in Example 1 except that laminated sheet B was used. Produced.
The laminated sheet was evaluated by the above method (1-1). The results are shown in Table 1.

Example 2
In Example 1, instead of EVOH resin 1, a laminate was formed in the same manner as in Example 1 except that EVOH blend resin (EVAL G156B: polyolefin resin BPO-10 (Kuraray Co., Ltd.) = 6: 4) was used. Sheet C was produced.
The laminated sheet was evaluated by the above methods (1-2) and (1-3). The results are shown in Table 1.

Comparative Example 2
In Example 1, instead of EVOH resin 1, a laminated sheet D was prepared in the same manner as in Example 1 except that low density polyethylene (LDPE; Petrocene 212 (Tosoh Corp.); MFR 13 g / 10 min) was used. Produced.
The laminated sheet was evaluated by the above methods (1-2) and (1-3). The results are shown in Table 1.

Example 3
The laminated sheet A produced in Example 1 is cut out into a face mask type as shown in FIG. 1, and an impregnating solution having the composition shown in Table 2 is uniformly impregnated with a dropper on the non-woven fabric side with a dropper. A-1 was obtained. This body sticking sheet A-1 was put in an aluminum pillow, and the aluminum pillow was sealed with an impulse sealer and closed. About this body sticking sheet A-1, it evaluated by the method of said (2-1). The evaluation results are shown in Table 3.

Comparative Example 3
Using the laminated sheet B produced in Comparative Example 1, a body-bonding sheet B-1 was obtained in the same manner as in Example 3. The body sticking sheet B-1 was evaluated by the method of (2-1) above. The evaluation results are shown in Table 3.

Example 4
The laminated sheet A produced in Example 1 was cut into squares of 7 cm × 7 cm, and 4.9 g of the impregnating solution shown in Table 4 was added to the nonwoven fabric surface side with a dropper, and the nonwoven fabric surface was turned inside and folded in half. After that, it was sealed in an aluminum pillow together with carbon dioxide gas and sealed with an impulse sealer to produce a sheet A-2 for body sticking of the present invention. About the sheet | seat A-2 for body sticking, it evaluated by the method of said (2-2). The evaluation results are shown in Table 5.

Example 5
In Example 4, instead of the laminated sheet A produced in Example 1, the laminated sheet C produced in Example 2 was used in the same manner as in Example 4 except that the laminated sheet C produced in Example 2 was used. Was made. The body sticking sheet C-2 was evaluated in the same manner as in Example 4. The evaluation results are shown in Table 5.

Comparative Example 4
In Example 4, instead of the laminated sheet A produced in Example 1, a body sticking sheet D-2 was produced in the same manner as in Example 4 except that the laminated sheet D produced in Comparative Example 2 was used. . The results evaluated in the same manner as in Example 4 are shown in Table 5.

Example 6
The laminated sheet A prepared in Example 1 is cut out into a face mask type as shown in FIG. 1, and 25 g of the impregnating liquid having the composition shown in Table 2 is impregnated uniformly with a dropper on the nonwoven fabric side. It was sealed in a pillow and sealed with an impulse sealer to prepare a body sticking sheet A-3 of the present invention. About the sheet | seat A-3 for body sticking, it evaluated by the method of said (2-3) and (2-4). The evaluation results are shown in Table 6.

Comparative Example 5
In Example 6, instead of the laminated sheet A produced in Example 1, a body sticking sheet D-3 was produced in the same manner as in Example 6 except that the laminated sheet D produced in Comparative Example 2 was used. . The results of evaluation in the same manner as in Example 6 are shown in Table 6.

Example 7
In Example 6, instead of the laminated sheet A produced in Example 1, the laminated sheet C produced in Example 2 was used in the same manner as in Example 6, except that the laminated sheet C produced in Example 2 was used. Was made. The body sticking sheet C-3 was evaluated by the above (2-3). The evaluation results are shown in Table 7.

Example 8
Add 0.2 parts by mass of polyoxyethylene (20) octyldodecyl ether, 0.01 parts by mass of dl-α-tocopherol acetate, and 0.005 parts by mass of a fragrance to 0.2 parts by mass of glycerin, and heat uniformly. After the dispersion, 0.585 parts by mass of purified water was further added to prepare a colorless and transparent microemulsion. Meanwhile, 9.8 parts by mass of glycerin, 5 parts by mass of 1,3 butylene glycol, and 20 parts by mass of polyethylene glycol were mixed with 2 parts by mass of polyacrylic acid (Julimer AC10LHP; Nippon Pure Chemicals Co., Ltd.) 4.5 parts by mass of sodium acrylate (Aronbis SS; Nippon Pure Chemicals Co., Ltd.), 0.2 parts by mass of methyl paraoxybenzoate and 0.2 parts by mass of aluminum hydroxide were uniformly dispersed. To this, 1 part by mass of the microemulsion is added, and further 1 part by mass of hydroxyethyl cellulose, 1.4 parts by mass of tartaric acid, 0.25 part by mass of asunalo extract, and 54.65 parts by mass of purified water are added and stirred until uniform. Then, a thickener for forming an aqueous gel was prepared.
The obtained thickened gel for forming an aqueous gel was sandwiched between a colorless and transparent PET film (thickness 75 μm) and the laminated sheet A prepared in Example 1, and the gel thickness was about 1 mm on average. Spread with a baker applicator. This was sealed in a non-breathable aluminum pillow and stored in an environment at 50 ° C. for about 1 day to complete the crosslinking reaction. The obtained laminated sheet was cut out into a face mask mold as shown in FIG. 1, sealed in an aluminum pillow together with carbon dioxide, and stored at room temperature for about 4 days. Thus, the sheet | seat E-3 for body sticking in which the carbon dioxide dissolved in the aqueous gel was formed.
About the sheet | seat E-3 for body sticking, it evaluated by said (2-1) and (2-3). The evaluation results are shown in Table 8.

From Table 1, it can be seen that the lamination sheet (Example 1) using EVOH having a large MFR has a high lamination strength. Moreover, since the laminated sheet using EVOH (Examples 1 and 2) warps to the liquid-impregnated base material side, it has a structure that does not easily peel off from the skin.
Furthermore, in the sheet for body sticking of the present invention (Example 3) and the comparative sheet (Comparative Example 3) containing the aqueous composition, the sheet A-1 for body sticking of the present invention (Example 3) uses a face mask. While almost no film peeling was sometimes observed, the film was easily peeled off in Comparative Sheet B-1 (Comparative Example 3). It was found that the use of EVOH having a large MFR was more difficult to peel even in actual use (Table 3).

From Table 5, although the sheet | seat A-2 (Example 4) and C-2 (Example 5) for body sticking of this invention hold | maintained the carbon dioxide concentration of 1300 mass ppm or more even if 15 minutes passed. Comparative sheet D-2 (Comparative Example 4) was lowered to 900 mass ppm or less. It turns out that the sheet | seat for body sticking of this invention using the EVOH resin containing film is holding the carbon dioxide concentration sufficient to show the blood flow promotion effect.
Also, from Tables 6 and 7, the body sticking sheets A-3 (Example 6) and C-3 (Example 7) of the present invention have high adhesion at the time of wearing, and the skin Redness was observed and increased skin blood flow was observed. On the other hand, in Comparative Sheet D-3 (Comparative Example 5), the adhesion at the time of wearing was insufficient, skin redness was hardly observed, and skin blood flow was hardly increased. It can be seen that the body adhesive sheet of the present invention using the EVOH resin-containing film has good adhesion and exhibits a sufficient blood flow promoting effect.

Furthermore, from Table 6, the face mask made of the sheet A-3 for body sticking of the present invention (Example 6) has an improvement effect on moisture, dullness and firmness of the skin, particularly dullness and It turns out that it has the outstanding improvement effect with respect to the firmness of skin.
Also, from Table 8, the body sticking sheet E-3 of the present invention impregnated with an aqueous gel (Example 8) shows almost no film peeling when using a face mask, and has high adhesion when worn. Immediately after removal, redness of the skin was observed, and an increase in skin blood flow was observed.

It is a figure which shows the type | mold of a face mask.

Claims (9)

A laminated sheet obtained by laminating a liquid-impregnated base material and a polymer film by heat fusion, and the polymer film has a melt mass flow rate (MFR) of 10 measured at a temperature of 210 ° C. and a load of 2160 g. A laminated sheet characterized in that it is a single layer film made of an ethylene / vinyl alcohol copolymer having a molar ratio of ethylene / vinyl alcohol of 30/70 to 55/45.   The laminated sheet according to claim 1, wherein the polymer film has an area swelling ratio of 3% or more.   The laminated sheet according to claim 1 or 2, wherein the raw material for the polymer film is extruded and laminated on a liquid-impregnated substrate using a T-die.   The laminated sheet according to any one of claims 1 to 3, wherein the liquid-impregnated base material contains rayon and / or cotton. The sheet | seat for body sticking formed by impregnating the liquid impregnation base material of the lamination sheet in any one of Claims 1-4 with the liquid or the gel. The sheet for body sticking according to claim 5 , wherein the liquid or gel is an aqueous composition. The body sticking sheet according to claim 5 or 6 , wherein carbon dioxide is dissolved in the liquid or gel. The body sticking sheet according to any one of claims 5 to 7 , which is used for a face mask. The use method which impregnates a liquid or a gel just before use with respect to the liquid impregnation base material of the lamination sheet in any one of Claims 1-4 .

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