JP3259834B2 - Polyamide fiber products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyamide fiber product having durability, improved moisture absorption and improved antistatic properties.

[0002]

2. Description of the Related Art Known techniques for improving the moisture absorption and antistatic properties of polyamide fibers include a method of graft-polymerizing a hygroscopic monomer onto the fiber surface and a method of attaching a hygroscopic polymer to a fiber surface together with a binder. .

[0003]

However, according to the prior art, it is difficult to obtain a texture required for clothing.
In addition, there is a disadvantage that the effect is lost by repetition of washing or the like. The present invention is a novel fiber product that has improved such disadvantages,
In particular, the present invention provides socks, stockings, pantyhose, tights, and the like.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention relates to the provision of a polyamide fiber product characterized in that it is formed by adhering an enzyme-solubilized fibroin, pyrrolidonecarboxylic acid and a polyamide resin.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The fibroin solubilized by an enzyme in the present invention is obtained by treating silk with a protease. For example, a protease is added to silk powder (silk shavings) and treated under conditions of ph10 and 50 ° C. And a silk solution having a molecular weight of 500 to 2,000. The pyrrolidone carboxylic acid is a natural wetting agent produced from glutamic acid, which is a kind of amino acid, and examples thereof include sodium pyrrolidone carboxylate. Furthermore, polyamide resins are those having a molecular weight of 5
Examples of the polyamide resin are 00 to 1500. The present invention provides a fiber product composed of polyamide fiber such as 6 nylon, 6-6 nylon, etc. by mixing the solubilized silk liquid, pyrrolidone carboxylic acid, and polyamide resin at an appropriate ratio to form a solution. For example, it is attached to socks, stockings, pantyhose, tights, etc., but may be applied to yarns or knitted fabrics constituting fiber products. In addition, the method is, for example, dipping, coating, or spraying the fiber product in the solution having the above-described configuration, and attaching the fiber product by any means such as 100 to 12
The treatment is completed by heat treatment at 0 ° C. for 30 seconds to 30 minutes. In addition, it is preferable to use the compounding ratio of the solubilized silk, pyrrolidone carboxylic acid, and polyamide resin in a weight ratio of 1: 10: 4 to 4: 10: 4. Pyrrolidone carboxylic acid contributes to imparting a hygroscopic property and antistatic property, and polyamide resin contributes to imparting durability and a soft texture. It should be noted that, when the proportion of pyrrolidone carboxylic acid is high, the texture becomes hard, and when the proportion of the polyamide-based resin is high, stiffness is lost, or in the case of a dyed fiber product, it is not preferable because a problem such as the dye falling off occurs. . Furthermore, although the socks and the like have been exemplified as the fiber products of the present invention, they may be outer garments and underwear. Hereinafter, a specific example will be described.

[0006]

Example 1 A stocking knitted fabric knitted using a covering yarn composed of 18 denier polyurethane elastic yarn as a core yarn and a single covering of 6 nylon yarns of 50 denier (40 filaments) was used as follows. Processing was performed under the conditions. 1. Treatment bath composition Silk fibroin solution (Lakset K-500 (trade name, manufactured by Rakuto Kasei Kogyo Co., Ltd.) Composition: polyamide resin 2
Solution containing 0% by weight and 5% by weight of fibroin) 10%
(Weight ratio to fiber) Sodium pyrrolidonecarboxylate (50% solution) 1
The processing bath is configured to be 0 g / liter. However, the bath ratio was 1:10. 2. Processing conditions The above knitted fabric was immersed in the above-mentioned processing bath, and after sufficiently penetrating the processing solution, it was centrifugally dehydrated to a pickup rate of 40%. Next, the heat treatment was completed at 105 ° C. for 1 minute to complete the treatment. 3. Evaluation With respect to the product of the present invention obtained as described above, the texture / feel, moisture absorption and frictional voltage were evaluated before and after washing. The results are shown in Table 1 in comparison with the knitted fabric before processing.

[0007]

[Table 1]

[0008] Each evaluation was based on the following. Texture / feel: Average value of sensory evaluation by 10 people ○… Soft and good △… Normal ×… Hard Hard moisture absorption: After leaving for 1 hour in an environment of temperature 20 ° C and humidity 10%, temperature 20 ° C and humidity It was obtained as a weight increase rate with respect to the absolute dry weight when left at 90% for 1 hour and further left for 1 hour in an environment of a temperature of 20 ° C. and a humidity of 10%. Friction band voltage: According to the friction band voltage measurement method of JIS L 1094 method. The friction cloth used was a cotton white cloth specified in JIS L0803. Washing: Repeated 20 times according to JIS L 0217 103 method.

[0009]

According to the present invention, excellent texture, moisturizing property and antistatic effect were obtained as described above. In addition, the socks which were superior in the durability, and were given a new function which were not heretofore,
Stockings, pantyhose, tights, etc. were provided.

Claims (2)

(57) [Claims] 1. A polyamide fiber product obtained by adhering fibroin, pyrrolidonecarboxylic acid and polyamide resin solubilized by an enzyme. 2. The textile according to claim 1, wherein the textile is selected from socks, stockings, pantyhose and tights.