JP3075374B2 - Processing of splittable composite fiber - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for processing splittable conjugate fibers. In particular, the present invention relates to a method for dividing splittable conjugate fibers by swelling after weaving.

[0002]

2. Description of the Related Art Conventionally, as a method of dividing splittable conjugate fibers, (1) a method of knitting and weaving previously divided fibers, (2)
There are known a method of dissolving one component of the composite fiber after weaving, and (3) a method of dividing the composite fiber after weaving by swelling with a swelling chemical.

Among these methods, (3) a method of dividing a composite fiber after weaving by swelling the composite fiber with a chemical having a swelling effect is described below. The polyamide component is emulsified and dispersed in benzyl alcohol or phenylethyl alcohol. A method of swelling (Japanese Patent Publication No. 53-35633), a method of swelling and separating a polyamide component by a solution comprising benzoic acid and an alcohol or a benzoic acid and an alkali metal salt of an alcohol and a benzoic acid or an alkaline earth metal 2-2640
70) have been reported.

[0004] However, when benzyl alcohol is used, there is a problem that uneven dyeing frequently occurs in a subsequent step because benzyl alcohol is not easily removed. Also,
When benzoic acid is used, its solubility in water is small and its temperature dependency is high.Because benzoic acid precipitates due to a decrease in temperature during processing and becomes locally concentrated when it is redissolved, At concentrations that cause the fibers to corrode while benzoic acid does not precipitate, the fibers are not sufficiently split. Further, when sodium hydroxide is added to a treatment solution using benzoic acid, there is a problem that sodium benzoate is solubilized and loses swelling, and sodium hydroxide cannot be used in the same bath. In addition, in the emulsification system, instability and non-uniformity of the system are conspicuous, resulting in a problem of processing unevenness, and further, corrosion of the processing machine has frequently occurred. Therefore, the conventional method has many problems in practical use, and improvement is desired.

[0005]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and can uniformly and stably split splittable conjugate fibers, thereby causing corrosion of a processing machine. It is an object of the present invention to provide a splitting method of splittable conjugate fiber without any problem.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a method for splitting splittable composite fibers comprising polyamide and polyester by swelling, wherein ethylene glycol monophenyl ether is used as a swelling agent, an alkali agent and And / or a method for processing a conjugate fiber characterized by using an inorganic salt.

In the present invention, splittable conjugate fiber is a shape in which one component does not completely include the other component in the cross section of the single filament and is joined along the longitudinal direction of the single filament. Shaped fiber, specifically, a side-by-side type composite fiber, a side-by-side repetition type composite fiber, a radially bonded composite fiber, and the like.

Further, as the polymer forming the fiber,
Examples include polyamides and polyesters. As polyamide, nylon 6, nylon 66, nylon 11,
Nylon 12, Nylon 610 and copolyamides based on them. As polyester,
Examples include polyethylene terephthalate, polybutylene terephthalate, polyethylene oxybenzoate, poly 1,4-dimethylcyclohexane terephthalate, polypivalolactone, and copolyesters containing these as main components. In addition, as a form of the fabric composed of the composite fiber,
It may be in any form, such as a woven fabric, a knitted fabric, or a non-woven fabric, and is not limited at all.

In the present invention, such a fabric is subjected to swelling processing using ethylene glycol monophenyl ether as a swelling agent and an alkali agent and / or an inorganic salt.
The amount of ethylene glycol monophenyl ether is 2 g /
It is preferably 1 to 500 g / l.

Further, ethylene glycol monophenyl ether of an emulsifying type can be used for uniform and stable division of splittable conjugate fibers. Examples of the emulsifier in this case include sodium dodecylbenzenesulfonate, polyoxyethylene alkylphenyl ether, polyoxyethylene sorbitan monooleate, triethanolamine oleate, and the like, as long as it can emulsify ethylene glycol monophenyl ether. It is not particularly limited.

Examples of the alkaline agent include potassium hydroxide and sodium hydroxide, but are not particularly limited, and are 5 to 30 g / l, preferably 8 to 15 g / l.
Should be used in an amount of

Examples of the inorganic salts include sodium sulfate and sodium chloride, but are not particularly limited as long as they are inorganic salts, and the amount is preferably 20 g / l to 100 g / l.

When swelling is carried out using the above-mentioned swelling agent, the treatment temperature is from 80 ° C to 120 ° C, preferably from 100 ° C to 100 ° C.
It is preferable to carry out at 110 ° C. and a bath ratio of 1: 5 to 1:50 for 20 minutes or more. Any processing machine may be used as long as it is hermetically sealed, and examples thereof include a beam dyeing machine and a liquid jet dyeing machine.
Next, washing is performed to remove the swelling agent. The conditions for washing are not particularly limited, but it is preferable to perform washing at a normal temperature of 50 ° C. to 80 ° C. for 15 minutes, and a chemical such as a soaping agent is not particularly required. A polycarboxylate, a sodium salt of a naphthalenesulfonic acid formalin condensate, or the like may be added. As the washing machine, it is preferable to use a counter flow type washing machine, for example, a jet soaper (manufactured by Onomori Iron Works, Ltd.), a jet dyeing machine or the like.

[0014]

According to the present invention, splittable conjugate fibers composed of polyamide and polyester are uniformly and stably split, and corrosion of the processing machine does not occur.

[0015]

EXAMPLES Examples of the present invention will be shown below and further explained.

Example 1 50 g of ethylene glycol monophenyl ether (manufactured by Nippon Emulsifier Co., Ltd.) in water with respect to a twill fabric using glasem yarn (nylon 6 / polyester, manufactured by Kanebo Co., Ltd.)
Using a treatment solution containing 1 g / l and 10 g / l sodium hydroxide, the mixture was treated with a liquid jet dyeing machine at a bath ratio of 1:10 at a temperature of 110 ° C. for 20 minutes, and washed at 80 ° C. for 20 minutes with a jet soaper. Table 1 shows the texture, split state, and dyed state of the obtained fabric.

Comparative Example 1 Ethylene glycol monophenyl ether 50
Processing was performed under the same conditions as in Example 1 except that g / l was used. Table 1 shows the texture, split state, and dyed state of the obtained fabric.

Comparative Example 2 Same as Example 1 except that 50 g / l of benzyl alcohol and 10 g / l of sodium hydroxide emulsified in water with SF1024 (alkylphenyl EO adduct, manufactured by Takemoto Yushi) were used as the treatment liquid. Processing was performed under the conditions. Table 1 shows the texture, split state, and dyed state of the obtained fabric.

Comparative Example 3 10 g / l of benzoic acid and sodium hydroxide 1
Processing was performed under the same conditions as in Example 1 except that 0 g / l was used. Table 1 shows the texture, split state, and dyed state of the obtained fabric.

Example 2 10 g of dodecylbenzenesulfonic acid in water as a treatment liquid
Processing was performed under the same conditions as in Example 1 except that a liquid containing 50 g / l of ethylene glycol monophenyl ether (manufactured by Nippon Emulsifier Co., Ltd.), 10 g / l of sodium hydroxide and 100 g / l of sodium sulfate was used. went. Table 1 shows the texture, split state, and dyed state of the obtained fabric.

Example 3 For a satin fabric using a lamp yarn (nylon 6 / polyester, manufactured by Kuraray Co., Ltd.), ethylene glycol monophenyl ether (manufactured by Nippon Emulsifier Co., Ltd.) 30 in water was used.
Processing was performed under the same conditions as in Example 1 except that a processing solution containing g / l and 100 g / l of sodium sulfate was used. Table 1 shows the texture, split state, and dyed state of the obtained fabric.

Example 4 A satin fabric using a lamp thread (nylon 6 / polyester, manufactured by Kuraray Co., Ltd.) was treated with ethylene glycol monophenyl ether (manufactured by Nippon Emulsifier Co., Ltd.) 10 in water.
Processing was performed under the same conditions as in Example 1 except that a processing solution containing g / l and sodium sulfate 50 g / l was used. Table 1 shows the texture, split state, and dyed state of the obtained fabric.

Example 5 A twill weave using a picame yarn (nylon 6 / polyester, manufactured by Toray Industries, Inc.) was 100 g of ethylene glycol monophenyl ether (manufactured by Nippon Emulsifier Co., Ltd.) in water.
l, sodium hydroxide 20 g / l and sodium sulfate 100 g / l
Processing was performed under the same processing conditions as in Example 1 except that a processing solution containing was used. Table 1 shows the texture, split state, and dyed state of the obtained fabric.

[0024]

[Table 1]

The above evaluation was performed according to the following criteria. Texture evaluation ◎ Very soft and soft texture ○ Fluffy and soft texture △ Hard texture × Very hard texture Split condition evaluation A Completely split B Somewhat split C Not split Dyeing state ○ Level dyeing △ Irritability is observed × Dye unevenness is observed

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-60-75665 (JP, A) JP-A-62-289611 (JP, A) JP-A-50-4320 (JP, A) (58) Field (Int. Cl. ⁷ , DB name) D06M 13/165

Claims (1)

(57) [Claims] 1. A processing of a conjugate fiber comprising splitting a splittable conjugate fiber comprising a polyamide and a polyester by swelling, wherein ethylene glycol monophenyl ether and an alkali agent and / or an inorganic salt are used as a swelling agent. Method.