JPH1150397A - Skin contact paper and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide skin contact paper for absorbing the fats and sweat of skin, capable of absorbing the fats and the sweat without causing the fading of makeup, the roughness of skin, the diseases of skin, etc., and to provide a method for producing the skin contact paper. SOLUTION: This skin contact paper comprises thin paper which is obtained by interlacing wooden fibers with bast fibers, to which the sericin and/or fibroins of silk components are adhered and at least whose one side is smooth. The bast fibers are collected from the bast of plants and are long and strong similarly to linen, flax, jute, etc. The skin contact paper is produced through a process for suspending wooden fibers and bast fibers in water and adding sericin and/or fibroin to the suspension to produce a pulp liquid, a paper-producing process for processing the pulp liquid into wet paper and subsequently drying the wet paper to produce the paper, and a finishing process for beating the paper with a hammer or rolling the paper to form a smooth surface. The sericin and/or fibroin are necessary for obtaining the thin paper having the smooth surface by the hammering method or rolling method, and is excellent in a moisture retaining property, a hygroscopic property, a moisture-permeating property and biocomaptibility.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to paper used for removing secretions or wastes secreted or excreted from the human body from the human body, and more particularly to paper used on the skin (hereinafter referred to as "skin"). Backing paper ") and its manufacturing method.

[0002]

2. Description of the Related Art Paper is made by suspending vegetable fibers having a hydroxyl group (-OH) such as cellulose fiber in water to produce water, and then drawing and drying the water to obtain a sticky fiber. It recovers the properties and gives it the shape and strength as paper. As described above, paper is generally entangled with cellulose fibers produced from pulp, and has a small tear resistance as compared with cloth, so that it is easily broken and has poor elastic recovery. However, it is characterized by being inexpensive and disposable, and having a hydroxyl group, so that it is excellent in water absorption, and is capable of absorbing sweat and sebum. Therefore, various disposable products utilizing such features, for example, paper underwear, disposable diapers,
Paper sanitary products, nose paper, makeup remover paper, fat removing paper, etc. have been developed.

[0003]

However, if these paper products are applied directly to the body for a long period of time, the skin may be roughened at the portion where the skin and paper come into contact, and atopic dermatitis may worsen. There's a problem. In addition, when ordinary paper pieces are used as grease removing paper, when the paper pieces are applied to the skin made with white powder or foundation, in addition to sebum or sweat, white powder or foundation adheres, causing the makeup to lose makeup. is there.

[0004] However, a method for preventing the occurrence of rough skin and atopic dermatitis in a portion that comes into contact with paper by performing some treatment on the paper has not yet been known.

[0005] On the other hand, as a disposable paper which does not cause makeup loss, foil stamping is known. Foil perforated paper is a by-product of the production of gold leaf.It is a paper made by adding wood ash, egg white, beeswax, etc. to a pulp solution produced from bast fibers such as goose, mitsumata and mulberry. This paper is used to sandwich gold foil when flattening. In the used foil stamping paper, wood ash, egg white, beeswax and the like adhering to the fiber are smooth and thin by helping the fiber to move in the horizontal direction at the time of hammering, and this is reused as a fat removing paper. When the foil stamping paper is used as a fat removing paper, fine particles such as white powder and foundation hardly adhere to the surface of the paper, and the makeup does not lose its shape. Further, foil-fed paper has the property of adsorbing secretions such as sebum and sweat since the properties of the paper itself are not lost. Furthermore, since it is thin and durable, it is easy to press against the skin and hard to tear. In addition, there is provided a grease-removing paper obtained by applying a coating process resistant to sweat and water to the same kind of paper as the paper used for the foiling, but the function is inferior to the foiling paper. As described above, foil stamping paper has excellent properties as a fat removing paper, but since it is produced accompanying gold leaf, its production amount is limited, and the production cost is high. There is.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and a first object of the present invention is to provide a skin-contacting paper which does not worsen skin roughness and atopic dermatitis even when paper and skin are in contact for a long time. A second object of the present invention is to provide an inexpensive fat-removing paper having the same function as a foil stamping paper, capable of adsorbing sebum and sweat without causing makeup loss.

[0007]

According to a first aspect of the present invention, there is provided a skin patch paper, wherein fibroin and / or sericin manufactured from silk adhere to entangled cellulose fibers. Silk (raw silk) is spun from the spinning hole of the silkworm, and two fibroins are stuck with sericin. Silk is a filament obtained by removing sericin from silk. Sericin is a low molecular weight polypeptide that dissolves in water to form an aqueous sericin solution. Fibroin is a main component of silk thread and is a kind of high protein (high molecular weight polypeptide). After the silk is treated with acid, the silk is chopped to a length of about 10 microns and dispersed in water to obtain a fibroin dispersion.

According to a second aspect of the present invention, there is provided the skin patch paper according to the first aspect, wherein the cellulose fibers are wood fibers produced from pulp and bast fibers produced from hemp. Wood fiber refers to cellulose fiber produced from pulp, recycled pulp and the like. The bast fiber is obtained from the bast of a plant and refers to a long and strong cellulose fiber such as hemp, flax, jute and the like.

According to a third aspect of the present invention, there is provided the skin-contacting paper according to the first or second aspect, wherein at least one surface is a smooth thin paper.

[0010] The method for producing a skin-contacting paper according to claim 4 is a preparation step in which cellulose fiber is suspended in water to produce water, and a paper-making step in which water is taken out and then dried to produce papermaking. And a spraying step of spraying a fibroin dispersion liquid and / or a sericin aqueous solution produced from silk on at least one surface of the papermaking.

[0011] The method for producing a skin-contacting paper according to claim 5 comprises a step of preparing cellulose water by suspending cellulose fibers in water and adding a fibroin dispersion and / or sericin aqueous solution produced from silk to the suspension. And a paper making step of producing paper by drying after making water.

[0012] The method for producing a skin-contacting paper according to claim 6 is a preparation step in which wood fiber and bast fiber are suspended in water to produce water for making, and paper making is performed after water is taken out and dried. A papermaking process, a spraying process of spraying a fibroin dispersion and / or a sericin aqueous solution produced from silk on at least one surface of the papermaking, and a finishing process of hammering or rolling the sprayed papermaking to form a smooth surface. It is characterized by including.

According to a seventh aspect of the present invention, the wood fiber and the bast fiber are suspended in water, and a fibroin dispersion and / or a sericin aqueous solution produced from silk is added to the suspension to produce water. It is characterized by comprising a preparing step, a paper making step of producing paper by drying after removing the water, and a finishing step of hammering or rolling the paper to form a smooth surface. Things.

[0014]

According to the first aspect of the present invention, sericin and fibroin adhering to the cellulose fibers forming the paper enhance the flexibility of the paper and improve the feel of the paper. In addition, sericin and fibroin are manufactured from natural silk and have both moisture retention, moisture absorption and biocompatibility,
It has good dispersibility in water and oil, and has an affinity for fat and sweat.It prevents cellulose fibers from directly touching the skin when paper is pressed against the skin, and transfers from the cellulose fibers to the skin. Then, the skin retains appropriate moisture and fat to prevent rough skin.

According to the second aspect of the present invention, since the cellulose fibers are wood fibers produced from pulp and bast fibers produced from hemp, the bast fibers have a smooth surface formed by hammering or rolling by increasing the tear strength of papermaking. To prevent tearing when forming thin paper. Wood fibers also reduce paper manufacturing costs and provide flexibility. Since hemp has a long fiber length and is relatively inexpensive, the tear strength of papermaking can be increased while suppressing an increase in production cost.

According to the third aspect of the present invention, since the thin paper is smooth on at least one side, fine particles such as white powder and foundation are unlikely to adhere to the surface of the paper, thereby exhibiting performance as a grease removing paper which does not cause makeup loss. be able to. Sericin and fibroin allow the relative movement of the cellulose fibers so that thin and smooth thin paper is formed by hammering or rolling.

The invention according to claim 4 sprays a fibroin dispersion liquid and / or a sericin aqueous solution produced from silk on at least one surface of papermaking, so that the amount of attached fibroin and / or sericin produced from silk can be freely adjusted. It is efficient because it can be set and can be attached at a high concentration to the surface layer that touches the skin.

According to the fifth aspect of the present invention, a fibroin dispersion and / or a sericin aqueous solution produced from silk are added in the preparation step, so that a conventional papermaking apparatus can be used as it is.

According to the sixth and seventh aspects of the present invention, a finishing step of forming a smooth surface by hammering or rolling the paper is provided following the manufacturing method of the fourth and fifth aspects. By the process or the rolling process, it is possible to produce a thin paper having a smooth surface and excellent in the performance of adsorbing sweat and sebum without causing makeup collapse. In particular, those finished by hammering have high smoothness, are thin and tough, and are particularly excellent as fat-removing paper.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION The skin contact paper of the first embodiment is used for makeup remover paper, and is obtained by simply attaching fibroin made of silk to the surface of paper made of pulp. Fibroin adhering to the cellulose fibers forming the paper imparts flexibility to the paper and improves the feel of the paper. In addition, when the skin contact paper of the present embodiment is in direct contact with the skin, fibroin is transferred to the skin, and the skin retains appropriate moisture and fat, thereby preventing rough skin.

FIG. 1 shows a method of manufacturing a makeup remover according to the first embodiment. After treating the silk thread with an acid, the silk thread is milled and cut into pieces of about 10 μm, and this is dispersed in water to produce a fibroin dispersion. On the other hand, making water is produced from unbleached pulp (preparation step), which is made and dried by a paper machine to make paper (paper making step). After the vacuum dehydration, the fibroin dispersion is sprayed with a spray and dried.
Without performing the calendering process, the sheet is cut into a predetermined size while being folded as a set, and put into a paper container to obtain a case-shaped makeup remover.

The skin contact paper of the second embodiment is used inside a disposable diaper, and has sericin adhered to a paper body formed by entanglement of cellulose fibers produced from pulp. Sericin is attached to the surface of the cellulose fibers of the paper body, has the same action as the fibroin described in the first embodiment, and also allows the cellulose fibers to move relative to each other to give the paper softness. . In addition, sericin has been conventionally discarded, so it is inexpensive and does not increase the manufacturing cost of disposable diapers. As the cover of the disposable diaper, a synthetic fiber woven fabric having excellent tensile strength and subjected to waterproof processing is used.

FIG. 2 shows a method of manufacturing a skin-contact paper for a paper diaper according to the second embodiment. Raw silk waste is placed in a pressure cooker and treated (dry heat treatment) at 5 atm x 130 ° C to melt sericin. This is dissolved in water to produce a sericin aqueous solution. On the other hand, after passing the pulp through the bleaching step, the pulp is suspended in water, and an aqueous sericin solution is added to prepare water for drawing (preparation step). Next, the water is made with a paper machine and dried to make a paper (paper making process). The obtained paper is subjected to a calendering process, and then cut to obtain a paper having a predetermined shape (finishing process).

The fat-removing paper of the third embodiment is one in which cellulose fibers and hemp fibers produced from pulp are entangled in a ratio of 20:80, and sericin is attached to the fibers. The thickness of the greasy paper is 20-30 microns.

FIG. 3 shows a method for producing a grease-removed paper according to the third embodiment. Put raw silk waste in a pressure cooker, 5 atm x 1
Treat at 30 ° C. (dry heat treatment) to melt sericin.
This is dissolved in water to produce a sericin aqueous solution. on the other hand,
Pulp and hemp are passed through a bleaching step, suspended in water, and an aqueous sericin solution is added to prepare water for drawing (preparation step). Next, the water is made with a paper machine and dried to make a paper (paper making process). The obtained paper is sprayed with a serine aqueous solution, calendered, rolled with a lacquer roller, and then cut to obtain a predetermined-shaped grease-removed paper (finishing process).

In the fat-removing paper of the fourth embodiment, cellulose fibers produced from unbleached pulp and cellulose fibers produced from hemp are entangled in a ratio of 20:80, and the fibroin shreds produced from silk are mixed with the fibers. It has adhered. The thickness of the greasy paper is 20-30 microns.

FIG. 4 shows a method for producing a grease-removing paper according to the fourth embodiment. After treating the silk thread with an acid, the silk thread is milled and cut into pieces of about 10 μm, and this is dispersed in water to produce a fibroin dispersion. On the other hand, cellulose fibers are obtained from unbleached pulp and hemp, suspended in water, and the above fibroin dispersion liquid is added to prepare water for making (preparation step). This is made and dried by a paper machine to make paper (papermaking process). After the calendering process, it is cut into paper of a predetermined shape. This is stacked and hammered with a foiling machine or the like to produce a thin and smooth fat-removing paper (finishing process).

In the first to fourth embodiments, sericin and fibroin are used individually for easy understanding, and in the third and fourth embodiments, the rolling process or the hammering process is used independently. Although described, it is more practical to use make-up water to which sericin and fibroin are added, and both the rolling step and the hammering step may be used in the finishing step. How to combine these to produce the fat-removing paper of the present invention should be determined in consideration of equipment, productivity, product quality, and the like.

[Brief description of the drawings]

FIG. 1 is a process chart showing a manufacturing method of a first embodiment.

FIG. 2 is a process chart showing a manufacturing method according to a second embodiment.

FIG. 3 is a process chart showing a manufacturing method according to a third embodiment.

FIG. 4 is a process chart showing a manufacturing method according to a fourth embodiment.

Claims (7)

[Claims] 1. A skin-patterning paper characterized in that fibroin and / or sericin produced from silk adhere to entangled cellulose fibers. 2. The skin patch according to claim 1, wherein the cellulose fibers are wood fibers produced from pulp and bast fibers produced from hemp. 3. The skin-contact paper according to claim 1, wherein at least one side is a smooth thin paper. 4. A papermaking process in which cellulose water is suspended in water to produce water, a papermaking process in which water is taken out and then dried to produce papermaking, and at least one side of papermaking is produced from silk. Spraying a fibroin dispersion liquid and / or a sericin aqueous solution. 5. A preparation step in which cellulose fibers are suspended in water, a fibroin dispersion liquid produced from silk and / or an aqueous sericin solution are added thereto to prepare water for drawing, and the water for drawing is removed and then dried. And a papermaking process for producing paper. 6. A papermaking process in which wood fiber and bast fiber are suspended in water to produce drawing water, a papermaking process in which the drawing water is removed and dried to produce papermaking, and at least one side of the papermaking is made of silk. A spraying step of spraying a fibroin dispersion and / or a sericin aqueous solution produced from the above, and a finishing step of hammering or rolling the sprayed paper to form a smooth surface. Paper manufacturing method. 7. A preparation step of suspending wood fiber and bast fiber in water, adding a fibroin dispersion liquid and / or sericin aqueous solution produced from silk to the suspension, and preparing the drawing water. A method for producing a skin-contacting paper, comprising: a papermaking step of producing paper after drying and a finishing step of hammering or rolling the produced paper to form a smooth surface.