JPH0860547A - Skin caring fiber product - Google Patents

Abstract

PURPOSE: To obtain a skin caring fiber product capable of retaining skin having moist feeling for a long period by providing a protein containing a specific amount of serine to a fiber product. CONSTITUTION: This fiber product is obtained by subjecting a yarn composed of an animal or plant natural fiber, a regenerated fiber, a synthetic fiber and a fiber product such as pile or woven or knitted fabric to immersing treatment with an aqueous solution containing sericin (e.g. obtained from a silk fiber) which is a protein containing 20-40wt.% of serine as an amino acid component and applying 0.05-5wt.% of sericin protein to the fiber. The fiber product provides sufficient moisture retaining effect on corneal layer and is capable of retaining skin having moist feeling over a long period and excellent in skin caring property.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skin care fiber product used for protecting the skin and maintaining moisturized bare skin, and in particular, it supplements the water retaining function of the stratum corneum of the skin to provide a healthy and normal skin. The present invention relates to a skin care textile product which is effective for maintaining skin.

[0002]

2. Description of the Related Art The skin of the human body is located at the boundary between the living body and the outside world and protects the body from various external environments. Particularly, the lipids surrounding the corneocytes forming the stratum corneum of the skin. Studies have shown that free amino acids and act as natural moisturizing factors. Based on such a mechanism, various kinds of skin care cosmetics have been proposed and widely used so far in order to prevent the skin from becoming rough, rough, and the surface of the stratum corneum to be peeled off or dropped due to aging of the skin. In recent years, however, attempts have been made to make textile products that are worn daily have such a function required for cosmetics, and some clothing that has already aimed at the skin care effect during wearing has been put on the market. Specifically, it is known to use a fiber containing protein as a main component as a fiber material, or to add collagen to a fiber product, but there is a problem in the property of the fiber itself and the skin care property. It is not known that it retains and shows sufficient skin care properties.

[0003]

DISCLOSURE OF THE INVENTION The present invention provides a fiber product excellent in skin care property, which retains the characteristics of the fiber material to be used and gives a sufficient moisturizing effect to the stratum corneum to maintain moist skin for a long period of time. It is intended to be provided.

[0004]

The present invention is a skin care fiber product provided with a protein containing 20 to 40% by weight of serine as an amino acid component.

Serine is used as the amino acid component of the present invention.
By imparting a protein containing 40% by weight to a fiber product, when it is worn, the hygroscopicity of the stratum corneum of the skin is highly maintained, dryness of the skin is prevented, and moisturized skin is maintained. It has the remarkable effect of preventing rough skin and aging of the skin.

Sericin is particularly preferably used as a protein containing 20 to 40% of serine. Sericin is obtained in the form of powder by a chemical scouring method or an enzymatic scouring method, by partially hydrolyzing and eluting sericin contained in silk fibers and then by a chemical precipitation method or another method.

Fiber materials for forming the fiber product of the present invention include fibrils, threads, piles, cotton-like materials, woven fabrics, knitted fabrics, non-woven fabrics, and flocked fabrics, as well as underwear and undergarments for daily wear,
Examples include clothing such as supporters wrapped around limbs, socks, stockings, and gloves. Further, other wood products, paper products and the like are also included in the fiber products of the present invention. The materials of these fiber products include natural fibers such as plant fibers and animal fibers, synthetic fibers such as regenerated fibers, semi-synthetic fibers and synthetic fibers, or blended products of these natural fibers and chemical fibers, mixed woven products, knitted products, etc. It is optional, and those having required fiber characteristics depending on the application are appropriately selected.

The amount of the predetermined protein such as sericin added to the fiber product of the present invention is preferably 0.05 to 10% by weight (based on the weight of the fiber), and more preferably 0.2 to 3% by weight. When the applied amount is 0.05% or less, the moisturizing effect cannot be expected, and when the applied amount is 3% or more, the effect is not different.

As an application method, an aqueous solution of a predetermined protein is usually used, and appropriate means such as dipping, coating, spraying and printing can be used. Although it is possible to obtain a dyed fiber product, a given protein should be applied after the dyeing operation.

Further, in order to enhance the fixation of the predetermined protein of the present invention, it is possible to use a resin such as an acrylic resin, a urethane resin, a polyester resin or an epoxy resin in combination. It is also preferable to use an oil component such as squalane together with a protein containing 20 to 40% by weight of serine. By using this together, affinity for skin, permeability, nutritional supplementation can be performed, and moisture wicking from the skin can be prevented, so that the moisture and oil content of the bare skin can be appropriately maintained. Hereinafter, the present invention will be specifically described with reference to examples, but the invention is not limited thereto.

[0011]

【Example】

Example: Tights knitted with nylon yarn and spandex yarn were dipped in a 3% aqueous solution of sericin containing 25% serine, and then dewatered by a centrifugal dehydrator, followed by 10
After drying at 0 ° C. for 3 minutes, 0.8% by weight of sericin was applied to the fiber. 30 women who chose the obtained tights at random
The subject was asked to wear the skin and the condition before and after wearing the skin was observed.

The evaluation method was carried out as follows. (1) Wearing clothes: Tights (nylon / spandex) (2) Wearing period: 2 weeks (3) Evaluation method: The degree of skin condition of knees, shins, and heels after 2 weeks of wearing was evaluated according to the following 5 grades. . +2 ... Especially moist. +1 ... Moist. 0: Normal -1: Rough skin. -2 ... The skin is particularly rough. Microscopic photographs of the skin surface (shins and thighs) after 2 weeks and 1 month after wearing were taken and observed. The evaluation results are shown in Tables 1 and 2. Out of the 15 people who had rough skin among the 30 people who wore it, 12 (80%) had the effect of improving rough skin. Also, from the skin surface photograph, exfoliation of the stratum corneum was observed before wearing, but it was confirmed that it was significantly improved after wearing.

[0013]

[Table 1]

[0014]

[Table 2]

[Brief description of drawings]

FIG. 1 is a photomicrograph of the shin before wearing the product of the present invention.

FIG. 2 is a photomicrograph of the shin portion 2 weeks after wearing the product of the present invention.

FIG. 3 is a photomicrograph of the shin portion after one month of wearing the product of the present invention.

FIG. 4 is a photomicrograph of the thigh before wearing the product of the present invention.

FIG. 5 is a photomicrograph of the thigh part two weeks after wearing the product of the present invention.

FIG. 6 is a photomicrograph of the thigh part one month after wearing the product of the present invention.

Claims (4)

[Claims] 1. An amino acid composition containing serine of 20 to 40.
A skin care fiber product to which a protein contained by weight% is added. 2. The skin care fiber product according to claim 1, wherein the protein is sericin. 3. The skin care fiber product according to claim 1, wherein the fiber product is a knitted or woven fabric of plant fiber, regenerated fiber, semi-synthetic fiber or synthetic fiber. 4. The skin care fiber product according to claim 1, wherein the amount of protein added is 0.05 to 5% by weight.