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Fabric and clothes for atopic dermatitis patients

A technology for patients with atopic dermatitis, applied in the field of cloth and clothing, can solve the problems of unable to exert the characteristics of silk protein, no description of the relationship, limitations of thermoplastic resin, etc., to reduce or cure atopic dermatitis, high production efficiency, small stimulating effect

Inactive Publication Date: 2007-06-13
KURARAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this technology, there is a problem that the coated chitin or chitosan peels off after use or repeated washing, and lacks durability.
[0007] However, in this type of method, generally speaking, the properties of silk protein can be imparted to the surface of the material, but since it is a method of using an aqueous solution of silk protein or a dispersion of silk protein as a treatment agent, the same as the above-mentioned method, the presence of silk protein in the fiber Easy to fall off during use or washing, lack of durability
Also studied the material that uses silk protein and binder or coating to mix as treatment agent, this treatment liquid is coated on the method for fiber or cloth surface, in this method, because the surface of silk protein is covered with binder or coating resin Covered, there is a problem that the characteristics of silk protein cannot be exerted
[0008] As a method to solve this problem, there is a method proposed in JP-A-2003-342835 (Patent Document 4), which is to knead a thermoplastic resin having an appropriate melting point with silk particles, and use the kneaded resin as a sheath component to form a core. The method of sheath-type composite spinning fibers, but in this method, the same as the above-mentioned method, there is the following problem: because the silk protein is covered by the resin, the desired purpose cannot be achieved, and the thermoplastic resin that can be further used is extremely limited.
However, in this document, there is no description of the details of the polyethylene glycol used, nor is there any description of the relationship between polyethylene glycol and atopic dermatitis

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Fabric and clothes for atopic dermatitis patients
  • Fabric and clothes for atopic dermatitis patients
  • Fabric and clothes for atopic dermatitis patients

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and comparative example 4 and 5

[0104] Free-radical polymerization of ethylene and vinyl acetate to produce a random copolymer with a copolymerization ratio of 44 mol% of ethylene, and then saponification treatment with sodium hydroxide to obtain an ethylene-vinyl acetate copolymer with a saponification degree of 99 mol% or more Saponification (EVOH). Using this polymer as the A polymer (forming the sheath), on the other hand, using ethylene terephthalate (PET) as the B polymer (forming the core), the composite ratio of the A polymer and the B component Under the condition of 50:50, carry out melt composite spinning with spinning temperature 285 ℃, take-up speed 3500m / min, the cross-sectional shape of obtaining each fiber is the multifilament fiber of the shape shown in Figure 1 (total thickness is 83dtex 24 multifilaments (hereinafter referred to as "83dtex / 24 monofilament")). Before the fiber is produced, the pellets in a wet state as polymer A are washed with a large amount of pure aqueous solution conta...

Embodiment 2

[0118] Example 2 is an example of fiberization using commercially available polyamide 6 as the B polymer. That is, except that polyamide 6 was used as the B polymer, long fibers were produced in the same manner as in the examples, and knitted materials were formed into T-shirt-shaped underwear, and a wearing test was carried out. The results are shown in Table 1. From the results in Table 1, it can be seen that the itching reduction effect in patients with atopic dermatitis is remarkable.

Embodiment 3

[0120] In Example 1 and the same ethylene-vinyl alcohol copolymer, 20% of the polyamide resin synthesized by the following production method was melt-kneaded, and the extruded product was used as the A polymer, and commercially available polyamide 6 was used as the B polymer. Polymer, at a spinning temperature of 285 ° C, a core-sheath composite fiber (core-sheath ratio = 1: 1) containing A polymer as the sheath component and B polymer component as the core component is discharged through the nozzle. / min take-off speed for can winding. The obtained fiber bundles were stretched, crimped, and sheared by common methods to obtain chemical fiber staple fibers with a single fiber thickness of 1.2 dtex, a fiber length of 38 mm, and a cross-sectional composite shape as shown in Figure 1. The average size of islands containing polyamide resin in polymer A is about 70 nm, and the number of islands is about 50 / μm 2 .

[0121] The elastic modulus of raw cotton is 15cN / dtex. 70% of the...

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Abstract

It is intended to provide a fabric and clothes which can be obtained at a high productivity and are little irritative to atopic dermatitis patients. Namely, a fabric for atopic dermatitis patients, which is made of an EVOH-based fiber comprising an ethylene-vinyl alcohol copolymer having 25 to 70% by mol of ethylene copolymerized therein at a ratio of 70% or more of the fiber surface and can be in contact with affected parts of the atopic dermatitis patients and in which the hydroxyl content on the EVOH-based fiber surface amounts to 20 to 70% by mol, the Young's modulus of the EVOH-based fiber is 60cN / dtex or lower and the strand thickness of the EVOH-based fiber is 5 dtex or less, is prepared. The EVOH-based fiber may be a core-shell type compound fiber containing an ethylene-vinyl alcohol copolymer as the shell component, in particular, an ethylene-vinyl alcohol copolymer having 25 to 70% by mol of ethylene copolymerized therein as the shell component, and a crystalline thermoplastic resin having a melting point of 150 DEG C or higher as the core component.

Description

technical field [0001] The present invention relates to a fabric made of synthetic fibers which is suitable for reducing itching on the affected part of atopic dermatitis patients or treating scratches accompanied by itching, has sufficient fiber properties, and is excellent in durability and fabric formability, and clothing. Background technique [0002] Hitherto, as a fiber material excellent in biocompatibility, chitin using chitin, a natural polymer substance contained in shells of crabs or shrimps, or a deacetylated product of chitin is known. For example, in Japanese Patent Application Laid-Open No. 8-92820 (Patent Document 1), it is disclosed that chitin viscose is made into viscose, and the liquid after mixing chitin viscose and cellulose viscose is used as a spinning stock solution, and passed through Fibers are produced by wet spinning of common viscose rayon. Also, "The preparation and application of functional fibers from crabshell chitin" (Journal of Biotechno...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04B1/16A41B9/00A41B11/00A41B17/00A61L15/00D01F8/10D03D15/00
CPCD10B2401/041D03D15/0027Y10T442/2525D01F8/10D10B2501/02D10B2509/00D03D15/0083D10B2501/041D10B2401/022D10B2331/02Y10T442/2008D10B2501/043D10B2201/02D03D15/00D10B2331/04D10B2321/06A41D31/0011D10B2201/00D10B2401/021D04B1/16D10B2509/026D10B2403/0114A61P17/00A41D31/12A41D31/14A41B9/00D03D15/283D03D15/47D03D15/44D01D5/34D03D1/00D03D15/208D10B2321/00D10B2501/00
Inventor 河本正夫田中和彦网屋繁俊有贺三刚
Owner KURARAY CO LTD
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