JP2724786B2 - Method for shrinking fabric containing polyamide fiber - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for shrinking polyamide fibers in a fabric containing polyamide fibers.

[0002]

2. Description of the Related Art Conventionally, in a fabric containing polyamide fiber, shrinking of the polyamide fiber has been carried out by using an agent which swells the polyamide, such as benzyl alcohol, phenol, etc., under moist heat.
Also, in the case of a fabric made of a fibrillated conjugate fiber composed of polyamide and polyester, the fiber is opened using an agent that swells the polyamide, such as benzyl alcohol or phenol, and the polyamide fiber is further shrunk in some cases. Was. Many of the above-mentioned agents for shrinking polyamide are water-insoluble or hardly soluble, and it is necessary to add a surfactant to emulsify and disperse them.
For this reason, there are drawbacks that handling is difficult and shrinkage becomes unstable under the influence of a surfactant.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has been made in view of the above problem. It provides a method.

[0004]

That is, the present invention provides a fabric containing polyamide fibers of 1 denier or less with a molecular weight of 106 or less.
A polyamide fiber, characterized in that a water-soluble polyethylene oxide or a copolymer of polyethylene oxide and polypropylene oxide having a molecular weight of up to 10,000 is provided and heat-treated at a temperature of 170 to 190 ° C. to shrink the polyamide fiber. This is a method for shrinking a fabric containing:

[0005] The fabric containing polyamide fibers in the method of the present invention refers to a fabric containing polyamide fibers in the warp and / or weft or knitting yarn. Here, the polyamide fiber has a single fiber fineness of 1 denier or less, but may include a polyamide fiber exceeding 1 denier. Fibers other than polyamide are optional, and appropriate fibers can be used. Fabrics include woven and knitted fabrics.
Preferably, a fabric composed of fibrillated conjugate fibers composed of polyamide and polyester is used. Here, the fabric made of the fibrillated conjugate fiber made of polyamide and polyester is polyamide and polyester,
In a cross section of a single filament, one component does not completely surround the other component, and refers to a fabric made of conjugate fibers joined along the longitudinal direction of the single filament.

In the present invention, as the polyamide, for example, nylon 4, nylon 6, nylon 7, nylon 1
1, nylon 12, nylon 66, nylon 6,10,
Examples thereof include polymetaxylene adibamide, polyparaxylylene decanamide, polybiscyclohexylmethanedecaneamide, and copolyamides containing them.

The water-soluble polyethylene oxide or a copolymer of polyethylene oxide and polypropylene oxide used in the method of the present invention has a molecular weight of 106-1.
000, preferably about 300 to 2,000. For example, diethylene glycol, polyethylene glycol and the like can be mentioned. If the molecular weight of the compound is too large, it becomes insoluble in water and is not suitable.

In the method of the present invention, in order to obtain sufficient shrinkage of the fabric containing polyamide fibers, the amount of the polyethylene oxide or the copolymer of polyethylene oxide and polypropylene oxide applied to the fabric is based on the weight of the fabric. 2 to 30% by weight is preferred. Upon application to a fabric, an aqueous solution of preferably 2% to 50% of the substance is used, and it is preferable to immerse the object in the aqueous solution and squeeze the solution with a mangle or the like.

Next, heat treatment is performed to shrink the cloth. The temperature for performing the heat treatment is 170 to 190 ° C., and the heat treatment is preferably performed under dry heat. The heat treatment time is preferably 10 seconds to 5 minutes,
Particularly preferably, it is 20 seconds to 2 minutes. If the heat treatment time is too long, the polyamide fibers start to break, which is not appropriate. If it is too short, the shrinkage is insufficient.

[0010] As described above, in the method of the present invention, a cloth containing polyamide fibers is shrunk using water-soluble polyethylene oxide or a copolymer of polyethylene oxide and polypropylene oxide. There is no need to use such as, and it is easy to handle and stable shrinkage is obtained. The shrinkage is large. The texture of the processed fabric is flexible.

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

[0012]

【Example】

[0013]

EXAMPLE 1 A fibrillated conjugate fiber 100 comprising a warp yarn (nylon 6 filament 70 denier / filament number 36) and a weft yarn (eight radially elongated nylon 6 components and a polyethylene glycol copolymerized polyethylene terephthalate component complementary thereto) Twill fabric (1/2 twill, density: 1) using denier / number of filaments 50)
10 × 84) is reduced with an aqueous solution of caustic soda,
Polyethylene glycol copolymer of the weft The polyethylene terephthalate component is dissolved and removed, and nylon 6 as the weft is removed.
A woven fabric having a single yarn fineness of about 0.18 denier was obtained.

Subsequently, the woven fabric was treated with an ethylene oxide / polypropylene oxide copolymer (copolymerization ratio: 30: 7).
(0, molecular weight 1,200), immersed in a 25% aqueous solution (pickup 50%) with a mangle, wound up and spun idle for 10 minutes. Thereafter, a dry heat treatment was performed at 185 ° C. for 2 minutes.

The cloth shrunk at a shrinkage ratio of 2% in warp and 9% in weft, and its feeling was soft.

[0016]

Example 2 1/3 satin texture using a front yarn (50 denier fibrillated composite fiber composed of nylon 6 and polyethylene terephthalate / 25 filaments) and a back yarn (polyethylene terephthalate filament 30 denier / 12 filaments) The 28 gauge tricot greige was brushed with a needle cloth napping machine to obtain a napped fabric. Subsequently, the fabric was emulsified with 18% benzyl alcohol (emulsifier: Nikka Kagaku Sanmole BK20Con).
c. (1.8% used) was padded with 50% of a pickup, wound up, and allowed to stand for 10 minutes while idling.

After the fiber opening is completed in this way, washing is performed at 70 ° C. to remove benzyl alcohol.
A fabric containing nylon 6 filaments having a single yarn fineness of about 0.67 denier was obtained.

Subsequently, the cloth was treated with an ethylene oxide / polypropylene oxide copolymer (copolymerization ratio: 30: 7).
0, molecular weight 1,200), immersed in a 25% aqueous solution (pickup 50%) with a mangle,
For 2 minutes.

The cloth shrunk at a shrinkage rate of 17% in warp and 10% in weft, and the feeling was soft.

Further, when the obtained fabric was dyed with a disperse dye, a clear hue was obtained, and it was confirmed that the nylon 6 filament was shrunk and sank at the center of the fabric.

[0021]

As described above, in the method of the present invention, a water-soluble polyethylene oxide or a copolymer of polyethylene oxide and polypropylene oxide which does not require a surfactant when shrinking polyamide fibers in a fabric containing polyamide fibers. Because of the use, easy handling and stable large shrinkage can be obtained. In addition, a soft-textured fabric can be obtained.

Claims (1)

(57) [Claims] 1. A water-soluble polyethylene oxide having a molecular weight of 106 to 10,000 or a copolymer of polyethylene oxide and polypropylene oxide is applied to a fabric containing polyamide fibers of 1 denier or less,
A method for shrinking a fabric containing polyamide fibers, wherein the polyamide fibers are shrunk by heat treatment at a temperature of 0 to 190 ° C.