JP3816229B2 - Sheet pack - Google Patents

Description

【００４５】
【発明の効果】
本発明によれば、貼付時に使い易く、乾燥中に快適であり、乾燥し剥離した時に汚垢・角栓が十分除去されるシート状パックを提供することができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a peel-off type sheet-like pack that is attached to the skin and peeled off after drying.
[0002]
[Prior art and problems to be solved by the invention]
Peel-off type packs generally provide moisture, moisturizing ingredients and other active ingredients to the skin at the time of application, absorb excess sebum from the skin, promote blood circulation by applying moderate tension to the skin, and even exfoliation Sometimes it is possible to remove dirt and horn plugs on the skin surface. Thus, the peel-off type pack plays an important role in the care for keeping the skin beautiful.
[0003]
Conventionally, the product forms of peel-off type packs are known in the form of jelly, paste, or powder. Of these, jelly-like and paste-like ones are applied directly to the skin and peeled off after the film is formed. In addition, the powdered material is mixed with a liquid such as water before application to form a paste, and then applied to the skin, and then peeled after the polymer film is formed. Since all of these packs are applied to the skin with a finger, etc., the pack agent remaining on the finger after application is wasted, and there are inconveniences such as discomfort such as the finger becoming dirty. Was. In addition, non-uniformity when applied to the skin is also a problem. If the coating film is too thin, it will tear off when peeled off, resulting in residual skin, and if the coating film is too thick, it will take too long to form the coating. Therefore, it was difficult to use the pack comfortably.
[0004]
For such a problem, a sheet-like water-containing pack (Japanese Patent Publication No. 7-25659) obtained by impregnating a support with a mixed aqueous solution of alginic acid and polyvinylpyrrolidone and then allowing a crosslinking agent such as calcium chloride to act on the support, etc. A hydrous sheet-like pack using a water-soluble polymer compound and water has been proposed.
[0005]
However, the sheet-like pack has improved convenience when applied as compared with the conventional pack, but the convenience when applied and the effect of removing dirt / square plugs / skin conditioning effect due to the pack. However, it was not always satisfactory from the viewpoint of both. Further, the dry sheet pack has the disadvantages that it takes time to humidify with water or lotion, and it is difficult to determine the optimum amount of humidification.
[0006]
Therefore, the problem to be solved by the present invention is a sheet-like pack that sufficiently exhibits the effect of removing dirt / corner plugs / skin conditioning and that is easy and comfortable from the beginning to the end of application. Is to provide.
[0007]
[Means for Solving the Problems]
The present invention contains a mixture of a polymer gel (component (a)) and a polymer (component (b)) that is dissolved in water or a mixture of water and lower alcohol, and the components (a) and (b) Is a polymer composite that exists in a compatible state, and provides a sheet-like pack containing the polymer composite obtained by the following method (1) or (2) .
(1) A polymer that dissolves in water or a mixture of water and a lower alcohol, and is a cationic polymer having a group containing quaternary nitrogen or an anionic polymer having a sulfonic acid group (however, it does not have a radical polymerizable group) In the presence of a compound) and a crosslinking agent and a monomer having one radical polymerizable group in the molecule.
(2) A polymer that is soluble in water or a mixture of water and a lower alcohol, and is a cationic polymer having a group containing quaternary nitrogen or an anionic polymer having a sulfonic acid group (however, it does not have a radical polymerizable group) and things), polysaccharides and / or methods for dissolving the proteins,.
[0008]
The compatible state in the present invention is a state in which the component (a) and the component (b) are mixed with each other, and a 1 mm thick film comprising the mixture is dried at 25 ° C., 60% RH for 24 hours. The transmittance of light with a wavelength of 500 nm is 70% / mm or more with a visible absorptiometer. When this film is dyed with a dye such as iodine or osmium tetroxide and observed with a transmission electron microscope, the phase width is in a fine phase separation state of several tens to several hundreds of nanometers, that is, a micro phase separation state. However, the “compatible state” described in the present invention includes this microphase separation state.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
[(A) component]
The component (a) was formed by preventing other compounding components from flowing due to sagging or finger pressure when adhering to the skin of the sheet-like pack of the present invention and adhering to places other than the desired application location. When peeling the film, it plays an important role of increasing the strength of the film so as not to cause unpleasant peeling residue due to tearing of the film. Examples of such polymer gels include synthetic polymers and natural polymers that are three-dimensionally crosslinked by covalent bonds, ionic bonds, hydrophobic bonds, and the like.
[0010]
As a three-dimensionally crosslinked synthetic polymer, first, a polymer obtained by polymerizing one or more monomers selected from monomers having a plurality of radical polymerizable groups in the molecule (hereinafter referred to as a crosslinking agent), or 1 in the molecule. Examples thereof include a copolymer obtained by polymerizing a monomer having one radical polymerizable group (hereinafter referred to as a non-crosslinked monomer) and a crosslinking agent.
[0011]
In this case, any non-crosslinking monomer can be used as long as it has one radical polymerizable group in the molecule. And the following are illustrated as a crosslinking agent.
(1) Polyhydric alcohol (meth) acrylate, styrene carboxylate or vinyl benzyl ether of polyhydric alcohol Here, polyhydric alcohol having 2 to 10 carbon atoms is preferably used as the polyhydric alcohol, ethylene glycol, 1,2 -Propanediol, 1,3-propanediol, polyethylene glycol, polypropylene glycol, polyethylene glycol propylene glycol, glycerin, neopentyl glycol, pentaerythritol and the like are exemplified. The same thing is illustrated also as a polyhydric alcohol in the below-mentioned description.
[0012]
(2) Monomer obtained by reacting the carboxyl group of (meth) acrylic acid, styrene carboxylic acid or the hydroxyl group of vinylbenzyl alcohol with the epoxy group of the glycidyl etherified product of polyhydric alcohol (3) Vinyl ether or allyl of polyhydric alcohol Ether (4) (meth) acrylamide, styrene carboxylic acid amide or styrene sulfonic acid amide of a polyvalent amine where the polyvalent amine is methylenediamine, ethylenediamine, 1,3-diaminopropane, 1,4-diaminobutane, 1,5 -Diaminopentane, 1,6-diaminohexane, 1,4-diaminocyclohexane, 2,2'-diamino-diethylamine, phenylenediamine, bis-aminomethylbenzene and the like are exemplified.
[0013]
(5) Vinyl ester of polyvalent carboxylic acid Examples of polyvalent carboxylic acid include oxalic acid, malonic acid, succinic acid, adipic acid, citric acid, tartaric acid, phthalic acid, isophthalic acid, terephthalic acid, trimellitic acid, etc. The
(6) Divinylbenzene, N, N-dimethyl-N, N-diallylammonium chloride.
[0014]
Examples of natural polymers include polysaccharides such as agar, carrageenan and alginic acid, and proteins such as gelatin and casein.
[0015]
[Component (b)]
A polymer that is soluble in water or a mixture of water and a lower alcohol and exhibits the following properties is used.
(B) When 1 part by weight of polymer and 50 parts by weight of water are stirred and mixed at 10 ° C. for 24 hours, or (b) 1 part by weight of polymer and 50 parts by weight of a lower alcohol having 2 to 3 carbon atoms (Ethanol, 1-propanol, 2-propanol, ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, glycerin) and water mixture ([lower alcohol] / [water] (weight) Ratio) = 1/9 to 9/1)
The transmittance of the light having a wavelength of 500 nm in the visible absorptiometer of the obtained solution is 90% / 10 mm or more.
[0016]
In the present invention, the component (b) exhibits sufficient adhesion and adhesiveness to the skin, effectively occludes the skin and promotes transdermal absorption of other active ingredients, and absorbs and removes excess sebum. Or by drying and forming a film, it exhibits the effect of adsorbing and removing dirt and square plugs. Also, after peeling off the sheet pack, it becomes a thin film that is not uncomfortable to the touch, and remains on the skin surface to provide moisture protection and protection from external irritation, and to provide a smooth texture. I will.
[0017]
The polymer used for the component (b) is preferably an ionic polymer, and the following are exemplified.
(Cationic polymer)
The cationic polymer mentioned here is a polymer in which a plurality of groups containing quaternary nitrogen are linked by covalent bond in one molecule of the polymer, such as 2-methacryloyloxyethyltrimethylammonium chloride and 3- ( Examples thereof include a polymer containing a cationic monomer such as (N, N-dimethylamino) propyl lactate as one of repeating units, and a cationized product of a natural polymer such as cationized cellulose.
[0018]
(Anionic polymer)
The anionic polymer described herein is a polymer in which a plurality of anionic groups such as carboxyl group, sulfonic acid group, sulfuric acid group, and phosphoric acid group are linked by a covalent bond in one polymer molecule. And an anionized product of a natural polymer such as carboxyethyl cellulose, a polymer containing an anionic monomer such as p-styrenesulfonic acid as one of repeating units.
[0019]
In addition, a polymer having both a cationic group and an anionic group in one molecule, that is, a polymer containing a so-called amphoteric monomer as one of repeating units, a cationic polymer, or an anionic polymer, the ionic polymer described herein include.
[0020]
[Polymer composite for sheet pack]
In the polymer composite for sheet-like pack of the present invention, the content of component (a) is preferably 0.1 to 10% by weight, more preferably 0.5 to 6% by weight, and the content of component (b) is preferably 2 -30% by weight, more preferably 5-15% by weight.
[0021]
[Production method of polymer composite for sheet pack]
It can be prepared by any of the following three methods.
(1) In the presence of a polymer (which does not have a radical polymerizable group) that is soluble in water or a mixture of water and a lower alcohol, a monomer having one radical polymerizable group in the molecule and a crosslinking agent are radicalized. 4 to 50% by weight of a polymer dissolved in water or a mixture of water and a lower alcohol, 1 to 10% by weight of a monomer having one radical polymerizable group in the molecule, and 0.001 to 0.5% by weight of a crosslinking agent. And a solution of water or a mixture of water and a lower alcohol containing 0.001 to 0.1% by weight of a radical polymerization initiator is polymerized by heating or light irradiation. In order to laminate this product on the breathable substrate, it is effective to cause the polymerization to occur after impregnating the breathable substrate with the solution before polymerization.
[0022]
(2) A polymer gel obtained by radical polymerization of a monomer having one radical polymerizable group in the molecule and a crosslinking agent absorbs a new monomer having one radical polymerizable group and then radically polymerizes again. Water or water and a lower alcohol comprising 3 to 30% by weight of a monomer having one radical polymerizable group in the molecule, 0.003 to 0.3% by weight of a crosslinking agent, and 0.03 to 0.3% by weight of a radical polymerization initiator. The gel obtained by subjecting the solution of the mixture to a polymerization reaction by heating or light irradiation is once dried, and then 1 to 10% by weight of a monomer having one radical polymerizable group in the molecule and 0.01 to 0.1 radical polymerization initiator. This is achieved by absorbing a solution containing water by weight or a mixture of water and a lower alcohol, followed by polymerization by heating or light irradiation. In order to laminate this product on the breathable substrate, it is effective to perform this series of operations while the breathable substrate is impregnated.
[0023]
(3) A method of dissolving a polymer (which does not have a radical polymerizable group) dissolved in water or a mixture of water and a lower alcohol, and polysaccharides and / or proteins. An aqueous solution of a polymer that dissolves in water or a mixture of water and a lower alcohol, and an aqueous solution of polysaccharides and / or proteins, the polymer is 1 to 20% by weight, and the polysaccharides and / or proteins are 0.1 to 10% by weight Is achieved by mixing at 50-95 ° C. and cooling to room temperature. In order to laminate this product on the breathable substrate, it is effective to impregnate the breathable substrate with the mixed solution and then cool to room temperature.
[0024]
[Sheet pack]
The polymer composite for sheet-like packs of the present invention can be used as it is as a sheet-like pack, but it can contain various components according to the purpose. For example, as a humectant, ethylene glycol, polyethylene glycol, propylene glycol, polypropylene glycol, a copolymer of ethylene glycol and propylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, glycerin, polyglycerin; sorbitol, Sugar alcohols such as mannitol, xylitol and maltitol; monosaccharides such as galactose, glucose and fructose; polysaccharides such as maltose and lactose are used. Oils (emollient components) such as liquid paraffin, squalane, solid paraffin hydrocarbons; olive oil, jojoba oil, evening primrose oil, palm oil, cottonseed oil, cow oil, and other natural oils; isopropyl myristate, isocetyl isooctanoate, neopentyl Ester oils such as glycol dicaprate, glycerol mono-, di- or tripalmitate, glycerol monostearate; modified with cyclic or chain polydimethylsiloxane, polymethylphenylsiloxane, amino group-containing groups Polydimethylsiloxane, silicone oil such as polydimethylsiloxane modified with an alkyl group having 2 or more carbon atoms; higher fatty acids such as myristic acid, palmitic acid, stearic acid, isostearic acid and oleic acid are used. Further, whitening components such as vitamin C and placenta extract, anti-inflammatory components such as glycyrrhizinate, dyes, pigments, surfactants, preservatives, bactericides, and the like can be included.
[0025]
As the sheet-like pack of the present invention, a form applied on the surface of the breathable base material or a form impregnated in the entire inside of the breathable base material is desirable. In this case, various woven fabrics, non-woven fabrics, knitted fabrics, and films can be used as the breathable substrate, but a substrate having continuous pores is desirable. There are no particular restrictions on this material, but natural fibers such as cotton, hemp and wool; cellulose fibers such as rayon and acetate; nylon, vinylon, vinylidene, polyvinyl chloride, acrylic, polyester, polyethylene, polypropylene, polyurethane, etc. Synthetic fibers; other inorganic fibers such as carbon fibers can be used, among which hydrophobic fibers such as nylon, polyester, polyethylene, and polypropylene are preferable. These fibers are used in the form of a single substance or a mixture of plural kinds.
[0026]
If necessary, the sheet-like pack of the present invention can be laminated with a sheet that is peeled and removed immediately before use, a so-called release sheet. As such a release sheet, polyester, polypropylene, polyethylene, nylon, silicone-treated paper or the like can be used.
[0027]
In the sheet pack of the present invention, the combined thickness of the polymer gel impregnated with a water-soluble or lower alcohol aqueous polymer, the other components, and the breathable substrate is preferably 70 to 10,000 μm, Preferably it is 100-500 micrometers.
There is no restriction | limiting in particular about a shape, The thing provided with sufficient magnitude | size which can be cut | disconnected appropriately with a scissors etc. at the time of use and united with the shape of an application site | part may be used. It may be a product that is preliminarily cut into a shape that is considered to be suitable when assuming application sites such as the whole face, nose, forehead, cheek, hand, foot, and torso.
[0028]
【Example】
Synthesis example 1
In a glass reaction vessel equipped with a stirrer and a nitrogen introduction tube, 300 g of ion-exchanged water was placed, and the air in the system was sufficiently purged with nitrogen, and kept at 70 ° C. with stirring. Here, 300 g of a 33.3% aqueous solution of 2-methacryloyloxyethyltrimethylammonium chloride previously bubbled with nitrogen and a 5.00% aqueous solution of 2,2'-azobis (2-amidinopropane) dihydrochloride by 105 g. g was added dropwise simultaneously over 2 hours. During the dropwise addition, the solution in the reaction vessel was kept at 70 ° C. and kept stirring. The solution was held at 70 ° C. for an additional 5 hours with continued stirring and then cooled to room temperature. The obtained reaction mixture was diluted with 700 g of ion-exchanged water and added dropwise to an agitated mixture of 4 kg of isopropyl alcohol and 4 kg of isobutyl alcohol in an open state. The obtained precipitate was collected and dried under reduced pressure at 50 ° C. to obtain 168 g of poly (2-methacryloyloxyethyltrimethylammonium chloride). The weight average molecular weight in terms of pullulan was 94000, and the number average molecular weight was 28000.
[0029]
The polymer weight average molecular weight and number average molecular weight were determined by gel filtration liquid chromatography under the following conditions.
Column: Two KD-806M manufactured by Showa Denko KK Eluent: N, N-dimethylformamide solution of 50 mmol / L lithium bromide Detector: Differential refractometer flow rate: 1.0 ml / min Temperature: 40 ℃
Standard: Polyethylene glycol injection concentration: 0.20%
Injection volume: 100 μl.
[0030]
Synthesis example 2
In a glass reaction vessel equipped with a stirrer and a nitrogen introduction tube, 410 g of ion-exchanged water was put, and the air in the system was sufficiently purged with nitrogen, and kept at 80 ° C. with stirring. Here, 300 g of sodium p-styrenesulfonate and 101.2 g of methacrylic acid were dissolved in 1200 g of ion-exchanged water and previously bubbled with nitrogen, and 2,2′-azobis (2-amidinopropane) 2 hydrochloric acid A solution prepared by dissolving 0.638 g of salt in 150 g of water was added dropwise simultaneously over 2 hours. During the dropping, the solution in the reaction vessel was kept at 80 ° C. and continued to be stirred. The solution was held at 80 ° C. for an additional 7 hours with continued stirring and then cooled to room temperature. The obtained reaction mixture was diluted with 1500 g of ion-exchanged water and added dropwise to 15 kg of stirring ethanol under opening. The obtained precipitate was collected and dried under reduced pressure at 50 ° C. to obtain 268 g of p-sodium styrenesulfonate / methacrylic acid copolymer. The weight average molecular weight in terms of sodium polystyrene sulfonate was 310000, and the number average molecular weight was 57000.
[0031]
The polymer weight average molecular weight and number average molecular weight were determined by gel filtration liquid chromatography under the following conditions.
Column: One TSK G6000PW and one G3000PW manufactured by Tosoh Corporation are used in series. Eluent: 7 of 0.1 mol / L of potassium dihydrogen phosphate and 0.1 mol / L of disodium hydrogen phosphate and acetonitrile / 3 volume ratio mixture detector: Differential refractometer flow rate: 1.0 ml / min Temperature: 40 ° C
Standard: Sodium polystyrene sulfonate Injection concentration: 0.50%
Injection volume: 200 μl.
[0032]
Example 1
10.0 g of polymethacryloyl 2-methacryloyloxyethyltrimethylammonium chloride obtained in Synthesis Example 1, 5.00 g of 2-methacryloyloxyethyltrimethylammonium chloride, 0.25 g of nonaethylene glycol dimethacrylate (NK-9G manufactured by Shin-Nakamura Chemical Co., Ltd.), 2 , 2′-Azobis (2-amidinopropane) dihydrochloride (0.0065 g) was dissolved by adding 84.75 g of ion-exchanged water and bubbled with nitrogen. A portion of this aqueous solution was dried to form a polymer composite film having a thickness of 1 mm, dried at 25 ° C., 60% RH for 24 hours, and measured for light transmittance at a wavelength of 500 nm with a visible absorptiometer. / Mm.
[0033]
The above aqueous solution was developed on a Teflon bat with a length of 290 mm, a width of 230 mm, and a depth of 50 mm, and this liquid layer was 280 mm long and 220 mm wide knitted (12 denier nylon material, 71% empty space made of 5 filament fibers, (Thickness of 85 μm) was spread and stacked. The vat containing the monomer aqueous solution and the knitted fabric was placed in a heating furnace, and heated in a nitrogen atmosphere saturated with water vapor at 70 ° C. for 5 hours to obtain a water-swollen gel sheet. The water content in the gel sheet was 77% by weight. When the sheet thus prepared is brought into contact with a large excess of water in a beaker (for example, 50 g of ion-exchanged water with respect to a sheet having 0.2 g of components other than water), the sheet basically swells but is basically the original. I kept the shape. The water-swelled gel sheet was dried or added as necessary to adjust the water content, and cut into 30 mm × 50 mm to obtain an evaluation sheet.
[0034]
Example 2
21 g of p-sodium styrenesulfonate / methacrylic acid copolymer obtained in Synthesis Example 2, 4.00 g of sodium p-styrenesulfonate, 0.25 g of nonaethylene glycol dimethacrylate (NK-9G manufactured by Shin-Nakamura Chemical Co., Ltd.), 2 , 2′-Azobis (2-amidinopropane) dihydrochloride (0.0053 g) was dissolved by adding 74.75 g of ion-exchanged water and bubbled with nitrogen. A portion of this aqueous solution was dried to form a polymer composite film having a thickness of 1 mm, dried at 25 ° C., 60% RH for 24 hours, and measured for light transmittance at a wavelength of 500 nm with a visible absorptiometer. % / Mm.
[0035]
A water swollen gel sheet was obtained by the same method as in Example 1 using the above aqueous solution. The water content in this gel sheet was 74% by weight. When the sheet thus prepared is brought into contact with a large excess of water in a beaker (for example, 50 g of ion-exchanged water with respect to a sheet having 0.2 g of components other than water), the sheet basically swells but is basically the original. I kept the shape. An evaluation sheet was prepared from this water-swollen gel sheet in the same manner as in Example 1.
[0036]
Example 3
10.0 g of polymethacryloyl 2-methacryloyloxyethyltrimethylammonium chloride obtained in Synthesis Example 1 was added to 40 g of ion-exchanged water and dissolved. When this was heated to 70 ° C., 50 g of a 4 wt% agar aqueous solution at 90 ° C. was mixed and stirred well. Using this aqueous solution, a water-swelling gel sheet was obtained by the same method as in Example 1, and an evaluation sheet was prepared.
[0037]
Comparative Example 1
10% by weight aqueous solution of polymethacryloyl 2-methacryloyloxyethyltrimethylammonium chloride obtained in Synthesis Example 1 is knitted 30 mm long and 50 mm wide (12 denier nylon material, 71% empty space consisting of 5 filament fibers, thickness The sheet for evaluation was prepared by removing the liquid dripping from the fibers.
[0038]
Comparative Example 2
Ionized to 5.00 g of 2-methacryloyloxyethyltrimethylammonium chloride, 0.25 g of nonaethylene glycol dimethacrylate (NK-9G manufactured by Shin-Nakamura Chemical Co., Ltd.), 0.0065 g of 2,2′-azobis (2-amidinopropane) dihydrochloride 84.75 g of exchange water was added and dissolved, and bubbled with nitrogen. Using this aqueous solution, a water-swelling gel sheet was obtained by the same method as in Example 1, and an evaluation sheet was prepared.
[0039]
Comparative Example 3
A 10% by weight aqueous solution of the sodium p-styrenesulfonate / methacrylic acid copolymer obtained in Synthesis Example 2 is knitted 30 mm long and 50 mm wide (12 denier nylon material, 71% empty space composed of 5 filament fibers, (With a thickness of 85 μm), and a liquid dripping from the fiber was removed to obtain a sheet for evaluation.
[0040]
Comparative Example 4
p-sodium styrenesulfonate 4.00 g, nonaethylene glycol dimethacrylate (NK-9G manufactured by Shin-Nakamura Chemical Co., Ltd.) 0.25 g, 2,2′-azobis (2-amidinopropane) dihydrochloride 0.0053 g and ion-exchanged water 74.75 g was added to dissolve and bubbled with nitrogen. Using this aqueous solution, a water-swelling gel sheet was obtained by the same method as in Example 1, and an evaluation sheet was prepared.
[0041]
Test Example The evaluation sheet prepared in the above Example and Comparative Example was applied to the nose, dried for 30 minutes in an environment of 23 ° C./55% RH, and then peeled off. The number of removed horn plugs found on the sheet after peeling was evaluated. The results are shown in Table 1.
[0042]
<Evaluation method>
Evaluation is made by 5 expert panelists based on the following criteria, 3 points for ○, 2 points for △, 1 point for ×, rounded off the decimal point of the average value of 5 people, 3 points for 2 The points were evaluated as Δ and the points as ×.
[0043]
Ease of use at the time of sticking ○: There is no dripping and can be applied comfortably. △: Slightly dripping and difficult to stick ×: The dripping is severe and uncomfortable at the time of sticking. There is no dripping from the beginning to the end, and it can be dried comfortably. Δ: There is a little dripping at the beginning of drying, and it cannot be said that it can be dried comfortably. ×: The dripping from the beginning to the middle of the drying is severe and uncomfortable during drying. Number of removed horn plugs found on a sheet after peeling ○: You can see how many horn plugs are removed △: You can see how many horn plugs are removed ×: It seems that horn plugs are removed Invisible to [0044]
[Table 1]

[0045]
【The invention's effect】
According to the present invention, it is possible to provide a sheet-like pack that is easy to use at the time of sticking, is comfortable during drying, and from which dirt and square plugs are sufficiently removed when dried and peeled off.

Claims (2)

Contains a mixture of a polymer gel (component (a)) and a polymer (component (b)) that dissolves in water or a mixture of water and lower alcohol, and the components (a) and (b) are in a compatible state A sheet-like pack containing the polymer composite obtained by the following method (1) or (2).
(1) A polymer that dissolves in water or a mixture of water and a lower alcohol, and is a cationic polymer having a group containing quaternary nitrogen or an anionic polymer having a sulfonic acid group (however, it does not have a radical polymerizable group) In the presence of a compound) and at least one monomer selected from 2-methacryloyloxyethyltrimethylammonium chloride and sodium p-styrenesulfonate and a crosslinking agent.
(2) A polymer that dissolves in water or a mixture of water and a lower alcohol, and is a cationic polymer having a group containing quaternary nitrogen or an anionic polymer having a sulfonic acid group (however, it does not have a radical polymerizable group) And at least one polysaccharide and / or protein selected from agar, carrageenan, alginic acid, gelatin and casein .   The sheet-like pack according to claim 1, wherein the polymer composite is laminated on a breathable substrate.