JPH08260230A - Synthetic fiber and textile product therefrom - Google Patents

Abstract

PURPOSE: To obtain a synthetic fiber capable of controlling the humidity on the skin and presenting soft touch feeling to the skin, and to produce textile products such as underwear by using the fiber. CONSTITUTION: This synthetic fiber contains a silver ceramic antimicrobial agent, carboxylic acid-modified chitosan and an appropriate collagen. The textile product is obtained by using the synthetic fiber.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hygienic synthetic fiber which is preferable for atopic skin in clothes, particularly lingerie and pantyhose which are worn in contact with the skin.

[0002]

2. Description of the Related Art Synthetic fibers have a wash-and-wear property that allows them to be worn without ironing even when they are washed, and they are not easily wrinkled when worn, and are strong enough to be widely used in clothing life. However, synthetic fibers have poor hygroscopicity and cannot breathe humidity on the surface of the skin, and static electricity is easily generated. Synthetic fiber for atopic skin in terms of physiological hygiene
It is said that it is not preferable to wear 100% underwear, but there are things such as pantyhose that cannot be replaced by natural fibers in terms of thinness and strength, and lingerie underwear with a tricot half structure is a synthetic fiber long fiber. Unless it is thin, it cannot be replaced with natural fibers, and synthetic garments made of 100% synthetic fibers are widely used.

Most of the techniques of synthetic fibers for improving hygiene are related to imparting antibacterial property. In the underwear of synthetic fibers, physiological sweat of the skin causes the underwear to breathe humidity and further has an antibacterial effect. However, a synthetic fiber having an effect of preventing infection has long been eagerly desired for a hygienic synthetic fiber for keeping the surface of the skin in a hygienic environment, but a satisfactory product has not been completed yet. As a technology related to antibacterial fiber, there is a technology (Japanese Patent Publication No. 63-5403) in which an antibacterial fiber is obtained by mixing a silver ceramic antibacterial agent with a synthetic fiber and spinning the mixture. Polyester staple fiber having an antibacterial effect. Although it has been manufactured, its antibacterial property is improved, but since it is not hygroscopic, it is not suitable for atopic skin because it is sticky due to sweating of the skin, and it cannot maintain the skin in a hygienic environment. Also, a technique for obtaining an antibacterial fiber cloth by mixing chitosan with a synthetic resin binder liquid and fixing the fiber product by post-processing (Japanese Patent Laid-Open No. 03-51369).
No.), but since the levels of antibacterial and hygroscopic properties are low, the stickiness of the skin due to sweating is not improved, and it is not possible to obtain a physiological sanitary environment in which synthetic fibers are suitable for atopic skin. could not.

[0004]

[Problems of the prior art] The sanitary processing according to the above prior art is
Although many fibers are post-processed with silicone having quaternary ammonium, the antibacterial effect is low and the washing resistance is not sufficient. The conventional problems associated with the silver ceramic antibacterial agent, chitosan, are as follows. Technology to obtain antibacterial property by mixing silver ceramic antibacterial agent with synthetic fiber (Japanese Patent Publication No. 63-540)
No. 3), 1 to 1 of silver ceramic antibacterial agent in the synthetic fiber component
It is necessary to mix 3% by weight, but due to such a large amount of mixing, yarn breakage occurs frequently, spinning becomes extremely difficult, and it is difficult to manufacture staple fibers, and long fiber filaments are impossible. Nylon and polyester long fiber filaments are used for pantyhose stockings and tricot lingerie, so it was difficult to use them for lingerie and pantyhose stockings. Further, although the technique could produce a cloth such as a white coat as a spun yarn having an antibacterial property, it cannot be used as an underwear for improving the physiological hygienic environment of the skin due to its hygroscopic property. As a technique for antibacterial treatment of fibers with chitosan, chitosan is dissolved in an aqueous solution of an organic acid or an inorganic acid and quaternary ammonium chloride is chlorinated, and then a resin having film-forming ability with the aqueous solution, for example, polyurethane,
A method of obtaining an antibacterial fiber by mixing with polyacrylic acid or the like, adhering the mixed solution to a fiber cloth and subjecting it to a dry heat treatment (Japanese Patent Laid-Open No. Sho 03).
-51369), but the antibacterial properties of chitosan are Pseudomonas
aeruginosa , Bacilus subtilis and Aspergillus niger
Since it is ineffective, the antibacterial activity is low, and the antibacterial histograph is narrow, it is insufficient as an antibacterial fiber and cannot prevent infection by bacteria. With conventional fiber processing, it is not possible to obtain a hygienic environment on the surface of the skin that is 100% synthetic fiber, breathes the surface humidity of the skin, is kind to the skin, has an antibacterial effect, and can prevent bacterial infection. There wasn't.

[0005]

By adjusting the humidity on the surface of the skin by breathing moisture into the underwear, it is improved to a synthetic fiber that does not get loose and is kind to the skin, and tackiness caused by sweating is eliminated. To do. Further, it is an object of the present invention to provide lingerie and pantyhose that can prevent generation of odor due to proteolytic enzyme with an antibacterial agent, and can further prevent skin irritation and bacterial infection by microorganisms, which can provide a hygienic environment on the skin surface. To do. Therefore, it is possible to provide a synthetic fiber underwear that is gentle on atopic and allergic skin. It was found that by incorporating chitosan modified with carboxylic acid into synthetic fiber, excellent hygroscopicity can be obtained, unlike the method of fixing with a conventional binder. It was also found that this significantly improves the dyeability. Further, by mixing the silver ceramic antibacterial agent at the same time, the silver ion is easily released due to the interaction with the hygroscopicity, and the excellent antibacterial property can be obtained with a small amount of the silver ceramic antibacterial agent.

The present invention enables the production of fine denier synthetic filaments which could not be produced by mixed spinning. By mixing chitosan modified with carboxylic acid of synthetic fiber, it becomes possible to dramatically reduce the required amount of silver ceramic antibacterial agent, and the above-mentioned effect can be obtained. Furthermore, prevention of static electricity and improvement of texture are possible. It is also effective. In addition, it has become possible to obtain a fiber product having excellent dyeability.

[0007]

Hyaluronic acid, sorbitol, glycerin, and propylene glycol are known as hygroscopic agents, but they are not suitable for melt-mixing with a polymer, and their equilibrium with respect to relative humidity is used. The relationship between the amount of moisture absorption is highly dependent on relative humidity, and the amount of moisture absorption is significantly reduced at low humidity, and since it is sticky, the feel of the fiber is not suitable. The modified chitosan is characterized by having very little dependence on relative humidity and having a high average moisture absorption even at low humidity, and is suitable for fibers with a dry feel. According to the present invention, as the carboxylic acid that modifies chitosan, adipic acid, maleic acid, succinic acid, propionic acid, gluconic acid, terephthalic acid and the like can be used. Chitosan is mixed with the carboxylic acid and reacted at 40-60 ° C for 7-12 hours with stirring. The silver ceramic antibacterial agent contained in synthetic fibers is 0.
The amount of chitosan modified with carboxylic acid may be 0.05 to 0.5% by weight. By adding 0.05 to 0.5% by weight of chitosan modified by carboxylic acid and a silver ceramic antibacterial agent, the moisturizing property of the modified chitosan accelerates the release of silver ions than silver ceramic and the antibacterial effect is remarkably improved. . As a result, the addition amount of silver ceramic antibacterial agent is 0.05 to 0, compared with the conventional 1 to 3% by weight.
It can be reduced to as much as 5% by weight. When collagen is mixed, collagen is mixed after the reaction and stirred for 1 to 2 hours. Next, vacuum drying is performed. By mixing collagen, the plastic texture of synthetic fibers becomes a warm natural texture. Although collagen is also improved in hygroscopicity, it is effective in improving the feel of synthetic fibers, and when the chitosan is modified with a carboxylic acid, it may be mixed in an amount equal to one-tenth the amount of chitosan. As the silver ceramic antibacterial agent, silver zeolite in which silver is ion-exchanged with zeolite, or silver zirconium phosphate in which silver is ion-exchanged with zirconium phosphate can be used.

To mix in synthetic fibers, chitosan is modified with carboxylic acid and dried under reduced pressure to obtain 2 to 8 parts of a slurry, and 5 to 10 parts of a silver ceramic antibacterial agent in a polyol to prepare a slurry of nylon or polyester. 200 slurries of the slurry between the discharge part and the spinneret part of the melt extruder.
By heating and injecting at about 0 ° C., it is possible to spin-draw a long fiber containing a bacterial antibacterial agent and chitosan modified with a carboxylic acid to produce a desired filament. In addition, synthetic slurry prepared by mixing a polyol slurry in which a silver ceramic antibacterial agent and a carboxylic acid-modified chitosan are dispersed with a binder of a synthetic resin such as an acrylic resin, a vinyl chloride resin, or a polyurethane resin is soaked, squeezed, and dried. By doing so, a fiber having a similar effect can be produced.

As the polyol, polyethylene glycol, polypropylene glycol, polyethylene propylene glycol, polytetramethylene glycol or polybutylene glycol can be used as the polyether polyol. As the polyester polyol, those obtained by reacting adipic acid, maleic acid, phthalic acid with ethylene glycol, propylene glycol, butylene glycol or trimethylolpropane can be used.
Knitting, dyeing and finishing using nylon multi-filament with 15-20 denier for pantyhose.
And make pantyhose stockings. For a lingerie, a polyester 40 denier multifilament can be used to knit into a half structure by a tricot knitting machine, and dyeing, finishing, cutting, and sewing to obtain a lingerie. Polyester filaments can also be used in ladies' blouses as taffeta or ponzi fabrics using a 75 denier multifilament.

[0010]

Example 1 Mixing 8% of adipic acid with chitosan 60
The mixture was stirred at 0 ° C for 10 hours and dried under reduced pressure for 24 hours to obtain a modified chitosan. 20 parts of the modified chitosan and 6 parts of a silver ceramic antibacterial agent were mixed with 94 parts of a polyester polyol consisting of adipic acid and polyethylene glycol to obtain a stable slurry by a mill. A raw yarn for pantyhose stock containing 0.2% of silver ceramic antibacterial agent and 0.05% of modified chitosan by side-injecting the slurry at 200 ° C. into the middle of the discharge port and spinner of a nylon 6 melt extruder. Was produced in a 15 denier multifilament. A panty hose was knitted, dyed and finished using the 15 denier raw yarn. As a result of wearing the pantyhose on atopic skin, atopy was cured. It was also preferred as a stocking for nurses in hospitals because of infection prevention and comfort of wearing. Moreover, the dyeability was also excellent. About this product AATCCL14.144
The results of the -1965T-based bacterial count are Staphylococcus au
reus ATCC 6438-P, and Klebsilla pneumoniae ATCC 435
Six hours after the inoculation of 2 with 3 × 10 ⁴ inoculum, no bacteria were detected and the antibacterial effect was remarkable.

[0011]

Example 2 Mixing 6% of chitosan with adipic acid 60
The mixture was reacted by stirring at 0 ° C. for 10 hours, then 5% of collagen was mixed, stirred at 60 ° C. for 2 hours, and dried under reduced pressure for 24 hours to obtain denatured chitosan collagen. The modified chitosan
15 parts of collagen and 10 parts of silver ceramic antibacterial agent were mixed with 94 parts of polyester polyol consisting of adipic acid and polyethylene glycol to prepare a stable slurry in a mill. The slurry was heated to 200 ° C., and side injection was performed in the middle of the discharge port and spinneret of the polyester melt extruder.
Modified chitosan containing 0.3% silver ceramic antibacterial agent
4% of tricot raw yarn for lingerie containing 0.1%
Produced in a 0 denier multifilament. Knitting and dyeing a tricot half using the 40-denier raw yarn,
The finish was done.

[0012] When the lingerie was worn on atopic or allergic skin, good results were obtained without irritation. The dyeability of the product was also excellent. In addition, it was comfortable because there was no generation of static electricity due to wearing. It is preferred for the prevention of infection and the comfort of wearing because it does not cause body odor by wearing the lingerie and is deodorant.
The result of the bacterial count based on 144-1965T was Staphyloco
ccus aureus ATCC 6438-P, and Klebsilla pneumoniae A
Six hours after inoculation of TCC 4352 with an inoculum of 3 × 10 ⁴ , no bacteria were detected and the antibacterial effect was remarkable.

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Claims (8)

[Claims] 1. A synthetic fiber characterized by containing a silver ceramic antibacterial agent and a carboxylic acid-modified chitosan. 2. A synthetic fiber which is treated with a silver ceramic antibacterial agent and a carboxylic acid-modified chitosan. 3. The carboxylic acid for modifying chitosan is at least one component selected from adipic acid, maleic acid, succinic acid, propionic acid, gluconic acid and terephthalic acid. Carboxylic acid modified chitosan 4. The synthetic fiber according to claim 1, wherein the carboxylic acid-modified chitosan contains collagen. 5. A synthetic fiber according to claim 1, which comprises 0.05 to 0.5% by weight of a silver ceramic antibacterial agent and 0.05 to 0.5% by weight of a carboxylic acid-modified chitosan. 6. The treatment liquid is a mixture of a silver ceramic antibacterial agent and a polyol slurry in which a carboxylic acid-modified chitosan is dispersed, and a synthetic resin binder.
Fiber. 7. A fiber product produced by using the fiber according to any one of claims 1 to 6. 8. The textile product of claim 7, wherein the product is clothing.