JP6866747B2 - Skin-bonded laminate and its packaging - Google Patents

Description

The present invention relates to a skin-bonded laminate that replenishes the skin with water using a polysaccharide derived from Suizenji nori. Suizenji nori-derived polysaccharide is known by the name of "Sakuran" (registered trademark of Green Science Materials Co., Ltd.).

The Suizenji nori-derived polysaccharide is a polysaccharide collected from Suizenji nori and is a high molecular weight anionic polymer having an average molecular weight of more than 1 million. The Suizenji nori-derived polysaccharide has the property of being able to store a large amount of water inside, and by utilizing this property, it moisturizes the skin (for example, face, hands, etc.). It is used as an agent. For example, in Patent Document 1, a nanosheet having a total thickness of 300 nm or less is produced by alternately laminating the Suizenji nori-derived polysaccharide and a cationic polymer, and the nanosheet is attached to the skin to replenish the skin with water. Describes the technology to be used.

In this technique, each layer is thinned by alternately laminating Suizenji nori-derived polysaccharides (anionic polymers) and cationic polymers. That is, when a cationic polymer is applied on the layer of the polysaccharide derived from Suisenjinori (anionic polymer), both are electrostatically attracted to each other, so that the cationic polymer is extremely thin on the layer of the polysaccharide derived from Suisendinori (anionic polymer). A layer of polymer is formed. Ideally, it is a monolayer. Further, when the Suizenji nori-derived polysaccharide (anionic polymer) is applied on the layer of the cationic polymer, an extremely thin layer of the Suizenji nori-derived polysaccharide (anionic polymer) is formed for the same reason.

In this technique, nanosheets formed by alternately laminating Suizenji nori-derived polysaccharides (anionic polymers) and cationic polymers are extremely thin and have high flexibility and elasticity, resulting in uneven skin. Familiarity does not cause wrinkles, peeling, breakage, dropout, etc. For example, even if there are irregularities such as pores and acne, the nanosheet will follow the irregularities and fit the skin perfectly. Moreover, due to its thinness, the bonded skin does not feel uncomfortable, and the existence of the sheet itself is difficult to recognize. Therefore, according to this nanosheet, it is possible to replenish the skin with water without knowing the state in which the nanosheets are stuck together. Then, the nanosheet attached to the skin naturally loses its moisture and dries. The dried nanosheets can be easily exfoliated from the skin.

Japanese Unexamined Patent Publication No. 2013-184970

However, in this technique, since it is necessary to alternately laminate Suizenji nori-derived polysaccharides (anionic polymers) and cationic polymers to produce nanosheets, an extremely complicated production process is required. In addition, a high manufacturing cost is required accordingly.

Therefore, an object of the present invention is to provide a skin-bonded laminate which is a sheet in which an extremely thin sheet of Suizenji nori-derived polysaccharide is attached to the skin to replenish water, and which can be easily produced. ..

That is, the invention according to claim 1 is a skin-bonded laminate having a peelable skin-bonded layer on a support, wherein the skin-bonded layer contains a polysaccharide derived from Suizenjinori as a main component and has a water content of 50. It is a single layer in a wet state of about 90% by mass , and is a skin-bonded laminate characterized in that the thickness of the skin-bonded layer at a water content of 50 to 90% by mass is 40 to 300 nm. ..

Next, the invention according to claim 2 is a skin-bonded laminate having a water-soluble resin layer and a skin-bonded layer that can be peeled off on a support, and the skin-bonded layer is a polysaccharide derived from Suizenjinori. A skin characterized in that it is a single layer in a wet state having a water content of 50 to 90% by mass as a main component, and the thickness of this skin bonding layer at a water content of 50 to 90% by mass is 40 to 300 nm. It is a laminated laminate.

Next, the invention according to claim 3 is the skin-bonded laminate according to claims 1 to 2, wherein the skin-bonded layer contains 10% by mass or more of Suizenji nori-derived polysaccharide.

Next, the invention according to claim 4 is the skin-bonded laminate according to claims 1 to 3 , wherein the support is made of a non-woven fabric.

In the skin-bonded laminate of the present invention, the skin-bonded layer is composed of a single layer containing a polysaccharide derived from Suizenji nori as a main component and having a thickness of 40 to 300 nm in a dry state. Therefore, for example, a polysaccharide derived from Suizenji nori It can be formed by gravure coating a solution containing the body.

Moreover, since this layer has a thickness of 40 to 300 nm in a dry state, when it is attached to the skin, it follows the unevenness of the skin and does not cause wrinkles, peeling, breakage, falling off, etc. It is difficult to recognize itself. Since this layer contains a polysaccharide derived from Suizenji nori as a main component, it has extremely high moisturizing properties and can replenish the skin with water.

FIG. 1 is a cross-sectional explanatory view showing a specific example of the skin-bonded laminate of the present invention. FIG. 2 is a cross-sectional explanatory view showing a manufacturing process of the skin-bonded laminate of the present invention. FIG. 3 is a perspective view showing a specific example of a package body formed by sealing a skin-bonded laminate in a package bag.

Hereinafter, the present invention will be described with reference to the drawings. FIG. 1 of the drawing is a cross-sectional explanatory view showing a specific example of the skin-bonded laminate of the present invention.

The skin-bonded laminate 1 of the present invention is a peelable skin-bonded layer 13 laminated on a support 11. In order to facilitate the peeling of the support 11 and the skin bonding layer 13, it is desirable to interpose the water-soluble resin layer 12 between the layers 11 and 13.

The support 11 may be a sheet of any material, but since the support 11 is peeled off in a state where the skin-bonded laminate 1 is bonded to the skin, it is desirable that the support 11 is made of a material that allows moisture to permeate. For example, non-woven fabric.

The water-soluble resin layer 12 has a role of applying water to it to dissolve it and facilitating the peeling of the support 11 and the skin bonding layer 13. Moisture can be supplied through the support 11. As the water-soluble resin layer 12, polyvinyl alcohol, starch, carboxymethyl cellulose and the like can be used.

The skin bonding layer 13 is directly bonded to the skin to replenish the skin with water. Therefore, it is necessary to be exposed on the surface of the skin-bonded laminate 1. However, a release sheet may be superposed on the skin bonding layer 13 and supplied to the consumer in a state where the surface is protected. In this case, it is necessary to peel off the release sheet to expose the skin bonding layer 13 on the surface and then bond it to the skin.

Further, since the skin-bonded layer 13 replenishes the skin with water, it is necessary to use Suizenji nori-derived polysaccharide having excellent moisturizing properties as a main component. In addition, various chemicals may be blended. For example, anti-inflammatory agents, hemostatic agents, vasodilators, cosmetic ingredients, pigments and the like. Examples of cosmetic ingredients include almond oil, ascorbic acid, brown algae extract, caffeine, salicylic acid, and tocophenol. Examples of the dye include naphthol dyes and azo dyes. As described above, even when various chemicals are blended in the skin-bonded layer 13, 10% by mass or more of the skin-bonded layer 13 is composed of Suizenji nori-derived polysaccharides based on the dry state in which water is removed. It is desirable to occupy. When the polysaccharide derived from Suizenji nori is 10% by mass or more of the skin bonding layer 13, the skin bonding layer 13 has a high water retention capacity of 1000 ml / g or more.

The skin-bonded layer 13 may be in a wet state containing water, but may be in a dry state. When the skin bonding layer 13 is in a dry state, it is desirable to supply water to the skin bonding layer 13 to sufficiently absorb water before bonding to the skin.

Further, when the skin bonding layer 13 is bonded to the skin, the skin bonding layer 13 follows the unevenness of the skin and fits snugly, and the existence itself is difficult to recognize, so that the thickness in the dry state is increased. It needs to be 300 nm or less. If it is thicker than this, wrinkles, breakage, shedding, etc. may occur due to unevenness of the skin (for example, acne, moles, pimples, etc.). In addition, it may be partially peeled off and lifted from the skin, causing a feeling of strangeness in the skin, and the presence of the skin bonding layer 13 may be easily recognized. If the skin bonding layer 13 has a thickness of 40 nm or more, sufficient water can be supplied to the skin.

Next, the skin-bonded laminate 1 can be produced by the following method. That is, first, as shown in FIG. 2A, the release sheet 21 is prepared, and the skin bonding layer 13 is formed on the release sheet 21. The skin bonding layer 13 can be formed by dissolving Suizenji nori-derived polysaccharide and necessary chemicals in a solvent, applying and drying. As the solvent, water or an aqueous solution of inorganic salts can be preferably used. Further, as a coating method, a gravure coating method, a roll coating method and the like can be used. It is not impossible to dry the applied film until it is completely dried, but as mentioned above, the polysaccharide derived from Suizenji nori has a strong water-retaining power and retains water to form a gel, so that it is completely dried. It is difficult. Therefore, the polysaccharide derived from Suizenji nori may be semi-dried until it retains water and becomes a gel. Desirably, it is dried until it becomes wet with a moisture content of 50 to 90% by mass.

Next, the water-soluble resin is applied and dried on the support 11 to form the water-soluble resin layer 12. This coating is also possible by a method such as a gravure coating method or a roll coating method. Then, as shown in FIG. 2B, the skin-bonded layer 13 is laminated on the water-soluble resin layer 12 so as to face each other, and both are laminated. When the skin-bonded layer 13 is in a wet state, the water contained in the skin-bonded layer 13 slightly dissolves the surface of the water-soluble resin layer 12, so that the skin-bonded layer 13 is directly laminated without using an adhesive or the like. Is possible.

Finally, the skin-bonded laminate 1 can be manufactured by peeling and removing the release sheet 21. However, as described above, it is also possible to ship the release sheet 21 in a laminated state without peeling and removing the release sheet 21. In this case, it is desirable to peel off the release sheet 21 when using the skin-bonded laminate 1.

Next, when the skin-bonded layer 13 is in a wet state, it is desirable to seal and store the skin-bonded laminate 1 in a container that does not allow moisture to permeate in order to maintain this wet state. As the container, a rigid container or a flexible film packaging bag can be used. FIG. 3 is a perspective view showing an example of a package 3 formed by sealing a skin-bonded laminate 1 in such a package bag 31.

Regardless of whether the container is a rigid container or a packaging bag, it is desirable that the packaging material constituting this container is made of a material that does not allow moisture to permeate. For example, it is a polyolefin-based material such as polyethylene or polypropylene. Further, a packaging material having a metal foil, a metal vapor deposition layer, or an inorganic vapor deposition layer may be used in the layer structure. When sealed inside a moisture-blocking container in this way, for example, the moisture content of the skin-bonded layer 13 can be maintained at 50 to 90% by mass for storage.

Next, this skin-bonded laminate 1 can be used as follows. That is, first, the wet skin bonding layer 13 is attached to the skin surface. Since the wet skin bonding layer 13 is gel-like and has a slight adhesiveness, it can be directly contacted with the skin and bonded. Further, since the skin bonding layer 13 is composed of an extremely thin film having a thickness of 40 to 300 nm, it follows the unevenness of the skin and fits perfectly.

Next, the water-soluble resin layer 12 is dissolved and the support 11 is peeled off and removed. Since the skin-bonded layer 13 is in a wet state containing water, the surface of the water-soluble resin layer 12 is dissolved by the water contained in the skin-bonded layer 13, and the support 11 can be peeled off as it is. is there. Further, the support 11 can be peeled off after the water-soluble resin layer 12 is further supplied with water to dissolve it. When the support 11 is made of a non-woven fabric, water can be supplied through the support 11.

Since the skin bonding layer 13 left on the skin by peeling off the support 11 is extremely thin, it fits along the unevenness of the skin and does not cause a sense of discomfort. It is difficult to recognize its existence itself.

The skin-bonded layer 13 bonded to the skin naturally dries because its water is supplied to the skin or evaporated and lost. As the skin-bonded layer 13 loses its adhesive strength as it dries, it can be easily peeled off from the skin and removed.

1: Skin-bonded laminate 11: Support 12: Water-soluble resin layer 13: Skin-bonded layer 21: Release sheet 3: Packaging 31: Packaging bag

Claims (4)

A skin-bonded laminate having a peelable skin-bonded layer on a support.
The skin-bonded layer is a single layer in a wet state containing Suizenji nori-derived polysaccharide as a main component and has a water content of 50 to 90% by mass, and the thickness of the skin-bonded layer at a water content of 50 to 90% by mass is A skin-bonded laminate characterized by having a diameter of 40 to 300 nm. A skin-bonded laminate having a water-soluble resin layer and a skin-bonded layer that can be peeled off on a support.
The skin-bonded layer is a single layer in a wet state containing Suizenji nori-derived polysaccharide as a main component and has a water content of 50 to 90% by mass, and the thickness of the skin-bonded layer at a water content of 50 to 90% by mass is A skin-bonded laminate characterized by having a diameter of 40 to 300 nm. The skin-bonded laminate according to claims 1 to 2 , wherein the skin-bonded layer contains 10% by mass or more of Suizenji nori-derived polysaccharide. The skin-bonded laminate according to claims 1 to 3 , wherein the support is made of a non-woven fabric.

Images