JP2829815B2 - Method for producing novel acetate fiber-containing composite yarn woven fabric - 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 producing a novel composite yarn containing acetate fibers.

[0002]

2. Description of the Related Art In recent years, in the field of textiles for clothing, various natural,
Various modifications and improvements have been made in chemical fibers. Also, with respect to acetate fibers, the fiber cross section, the surface, the yarn morphology, and the like are changed to improve the glossiness and texture.

[0003] There have been attempts to treat acetate fibers with alkali or enzymatic treatment in the same manner as the alkali treatment of cellulose fibers or the enzyme treatment proposed in Japanese Patent Publication No. 52-48236. Although it is possible to reduce the weight by saponification, the fiber surface is converted to cellulose and no longer acetate, and unlike cellulose fibers, the hydroxyl group of β-glucose is substituted with an acetyl group. It is possible. Furthermore, it is also known that acetate fibers are printed with a paste solution containing a disinfectant, heat-treated, and then exfoliated, but this decomposes and removes the acetate fibers themselves and is unsuitable for modification. is there.

[0004]

However, if the acetate fibers are combined with other fibers into a woven fabric and combined with a specific treatment, not only the acetate fibers can be easily modified, but also the effect of the combination can be improved. In combination with this, a novel effect can be exhibited. An object of the present invention is to provide a novel acetate fiber-containing composite yarn woven fabric having a soft and good texture while maintaining the properties of acetate fibers.

[0005]

SUMMARY OF THE INVENTION According to the present invention, the surface of an acetate fiber is woven by using a composite yarn composed of acetate fiber and another fiber, treated with an alkali compound, and the surface of the acetate fiber is saponified. A novel method for producing an acetate fiber-containing composite yarn fabric , characterized in that a part or all of the saponified portion is decomposed and removed by treatment with an enzyme or a disinfectant.

[0006] The composite yarn of the present invention has a degree of acetylation of 45.
〜59.5% diacetate fiber and a degree of acetylation of 59.5%.
A composite yarn obtained by blending, blending, twisting, etc., of acetate fibers selected from triacetate fibers exceeding 5% and other fibers, and other fibers include synthetic fibers such as polyester fibers, polyamide fibers, and acrylic fibers. It is preferably used. Further, the ratio of the acetate fiber of the composite yarn can be arbitrarily set in consideration of the yarn strength and the effect of modifying the acetate fiber.

In the present invention, it is necessary to treat a woven fabric obtained by weaving a composite yarn containing such acetate fibers with an alkali compound. Examples of the alkali compound used in the alkali treatment include alkali metal hydroxides such as caustic soda, alkali metal hydroxides such as calcium hydroxide, and alkali metal salts such as sodium carbonate. .

The alkali treatment varies depending on the type of fiber, the degree of modification, that is, the degree of texture required, and the like. However, 1 to 40% by weight of the alkali compound is added to the acetate fiber containing the composite yarn.
Immersed in an aqueous solution of water and heated at room temperature to 130 ° C. for 5 to 12
The treatment is performed for 0 minutes to saponify at least the fiber surface of the acetate fiber contained in the composite yarn. Further, at the time of this alkali treatment, a weight loss accelerator such as a cationic activator can be used in combination.

Next, in the present invention, the alkali-treated composite yarn fabric is treated with a cellulose-decomposing enzyme or a disinfectant to decompose and remove cellulose produced by saponification of the surface of the acetate fiber in the composite yarn fabric .

The cellulolytic enzyme used in the enzymatic treatment is a cellulase that hydrolyzes cellulose, and may be derived from fungi such as Trichoderma and Aspergillus. Onozuka R-10 (Yakult), Meiselase (Meiji Seika Co., Ltd.), Cell Crust 1.5L
It can be easily obtained under a trade name such as (manufactured by Novo).

The enzymatic treatment varies depending on the degree of saponification of the acetate fiber in the alkali treatment, the degree of the desired texture, and the like. However, the alkali-treated composite yarn woven fabric is adjusted to pH 3.5 to 7.0 cellulose acetate and the like. Degrading enzymes 1-5
Immersed in an aqueous solution of 0 g / l,
Process in minutes. Depending on the degree of the enzymatic treatment, a part or all of the saponified portion of the acetate fiber in the composite yarn fabric is decomposed and removed to reduce the weight. The enzyme remaining on the composite yarn fabric can be easily deactivated by heating, such as immersion in hot water of 80 ° C. or higher.

As the cellulose desiccant used in the desiccant treatment, acids which carbonize and hydrolyze cellulose are preferable, inorganic acids such as sulfuric acid and hydrochloric acid, sodium hydrogen sulfate, aluminum sulfate, ferric sulfate, and the like. Sulfates such as ammonium sulfate, zinc sulfate and stannous sulfate, ferrous chloride, ferric chloride, aluminum chloride, magnesium chloride, zinc chloride, cobalt chloride, cuprous chloride, cupric chloride, nickel chloride and chloride Chloride salts such as stannous chloride, stannic chloride, etc., sodium chlorate, aluminum chlorate, potassium chlorate, sodium chlorite, nitrates such as chromium nitrate, copper nitrate, zinc nitrate, ferrous oxalate Oxalates such as ferric oxalate and stannous oxalate; acetates such as zinc acetate; phosphates such as zinc phosphate; and organic acids such as alkylnaphthalenesulfonic acid.

[0013] fiber-decomposing agent treatment, type of fiber, type of fiber-decomposed agents, varies the degree of texture or the like to obtain the degree of modification viz, the composite yarn fabric to an alkali treatment, the fiber-decomposed agent 0.5
It is immersed in a 20 wt% aqueous solution or further heated.
By this disinfectant treatment, a part or all of the saponified portion of the acetate fiber in the composite yarn fabric is decomposed and removed to reduce the weight.

In general, the acids of the disinfectant also attack the acetate fibers. However, since cellulose is extremely sensitive to the action of the acids, only the cellulose in the saponified portion can be easily decomposed by controlling the concentration and temperature of the aqueous solution of the disinfectant. Can be removed.

In the present invention, a novel composite yarn is obtained by modifying the surface layer portion of the acetate fiber contained in the composite yarn fabric by such an alkali treatment and an enzyme treatment or a treatment with a disinfectant.
Can be woven .

[0016]

The present invention will be described below in more detail with reference to examples. (Example 1) A 1800 t / m twisted yarn of a triacetate long fiber (bright 45d / 34f) having a degree of acetylation of 61.5% and a polyester long fiber (semi-dal 30d / 12f) was used, and the warp yarn and the weft yarn were used. Was refined and dried after scouring. This woven fabric is immersed in a 12 wt% aqueous solution of caustic soda with respect to the triacetate long fiber,
After the minute treatment, wash with clear water at room temperature to remove alkali,
Air dried. By this alkali treatment, a woven fabric having a triacetate long fiber loss rate of 11.5 wt% in the woven fabric was obtained.

Next, the alkali-treated fabric is treated with a pH containing 5 g / l of Cell Last 1.5 L (manufactured by Novo) and 5 g / l of Bioassist MT (nonionic penetrant manufactured by Moriroku).
It was immersed in an aqueous solution having a bath ratio of 4.8 at 53.degree. C. for 1: 100 for 120 minutes, stirred, washed with water, immersed in hot water at 80.degree. C. for 15 minutes, and dried. The obtained fabric has a total weight of 9.5 wt.
% Reduction, moderate tension by the constituent yarns of the fabric,
It had a soft waist and silky texture.

Example 2 The alkali-treated fabric obtained in Example 1 was immersed in a 7% by weight aqueous solution of sodium hydrogen sulfate monohydrate (34 to 37% as sulfuric acid) as a disinfectant. After the nip, the mixture was impregnated with 90% by weight of a liquid, steamed at 130 ° C. for 10 minutes to decompose the cellulose in the saponified portion, stirred in water to remove the decomposed product, washed with water, and dried. The obtained fabric is 10.8wt in total
% Reduction, moderate tension by the constituent yarns of the fabric,
It had a soft waist and silky texture.

[0019]

According to the present invention, while improving the functionality and hand by combining acetate fibers with other fibers, the alkali fibers and the enzyme treatment or the treatment with an antiseptic agent for the acetate fibers contained in the composite yarn woven fabric. A composite yarn woven fabric which has a novel texture, imparts moderate tension, gives waist and silky softness to the woven fabric , and also retains excellent coloring properties of acetate fibers. Further, in combination with the effect of the above-mentioned treatment of other fibers that are combined with the acetate fibers, a completely novel composite yarn woven fabric which has never existed before can be obtained.

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Kaoru Hamajima 4-160 Sunadabashi, Higashi-ku, Nagoya-shi, Aichi Mitsubishi Rayon Co., Ltd. Product Development Laboratory (56) References JP-A-6-316873 (JP, A) JP-A-6-184949 (JP, A) JP-A-2-216282 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) D06M 16/00 D06M 11/00-11/84

Claims (1)

(57) [Claims] 1. Woven using a composite yarn composed of acetate fibers and other fibers, treating with an alkali compound, saponifying the surface of the contained acetate fibers, and then treating with a cellulose decomposing enzyme or a disinfectant. And decomposing and removing a part or all of the saponified portion to produce a novel composite fiber woven fabric containing acetate fibers.