JPH1053965A - Continuous enzymatic treatment of fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save the amount of an enzyme used and uniformly, continuously and enzymically treat a textile material without unevenness by alternately repeating an enzymic adsorbing step and an enzymic desorbing step for the textile material. SOLUTION: An enzymic adsorbing step and an enzymic desorbing step for carrying out the dipping treatment of a textile material such as a cellulosic fiber, silk, promix and a mixed spun fiber, a twisted union yarn and a union cloth product, etc., thereof with a synthetic fiber in a treating liquid containing a prescribed enzyme such as a cellulolytic, a pectolytic, a lipolytic or a proteolytic enzyme, squeezing the liquid and heat-treating the textile material are alternately repeated to continuously perform the enzymic treatment when carrying out the weight reduction processing, scouring treatment, etc., of the textile material with the enzyme.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing method capable of continuously enzymatically treating fibers.

[0002]

2. Description of the Related Art As a method for decomposing, swelling, dissolving and reducing or scouring only the fiber surface of a cellulosic fibrous structure, treatment with a cellulase-containing treatment solution (Japanese Patent Publication No. 49-38946) or treatment with a pectinase-containing treatment solution (Japanese Patent Laid-Open No. 6-220772).

[0003] Since these methods are immersion methods, there is a problem that the productivity is not improved mainly. One of the methods for solving this problem is a treatment solution containing a cellulase enzyme in a cellulosic fibrous structure. , Followed by continuous steaming at a temperature of 20 to 60 ° C. has been proposed (Japanese Patent Application Laid-Open No. 4-352881).

[0004]

However, the method described in Japanese Patent Application Laid-Open No. 4-352881 has a disadvantage that the amount of the enzyme solution to the fiber is not sufficient, so that uneven treatment of the enzyme occurs, resulting in a decrease in strength and uneven dyeing. .

The object of the present invention is to solve such a problem, and an object of the present invention is to provide a method for continuously treating fibers with an enzyme.

[0006]

Means for Solving the Problems The present invention comprises a step of applying an enzyme-containing treatment liquid to a fiber material in an enzyme treatment step of a fiber material (hereinafter also referred to as an enzyme adsorption step), and a step of applying the enzyme-containing treatment liquid to the fiber after the enzyme treatment. This is a method in which the step of desorbing the enzyme-containing treatment liquid by heat treatment (hereinafter also referred to as the enzyme desorption step) is alternately repeated to continuously carry out the enzyme treatment of the fiber.

When the present invention is used in a fiber material reduction processing or a scouring step, the amount of enzyme used can be reduced as compared with ordinary batch processing or continuous steaming heat treatment, and further, the fiber material can be uniformly enzymatically treated. it can.

The fiber material usable in the present invention is not particularly limited, and a general fiber material can be used. For example, regarding the fiber material used for weight reduction processing for the purpose of softening the texture of the fiber material, natural cellulose fiber cotton, hemp, regenerated cellulose fiber viscose rayon, polynosic, cupra, purified cellulose fiber (Tencel), Each fiber material such as diacetate and triacetate of a semi-synthetic fiber, a cellulosic fiber material composed of a combination of two or more types, a mixed spinning, twisting or weaving of a cellulose fiber material composed of one type or a combination of two or more types and a synthetic fiber Fiber materials.

These fiber materials can be used after any of the steps of desizing, scouring, mercerizing, liquid ammonia processing, dyeing and the like.

[0010] The structure of the cellulosic fiber material is not particularly limited, and examples thereof include woven fabric, knitted fabric, nonwoven fabric, thread, cotton, and paper.

On the other hand, the fiber materials which can be used for scouring, which is a step of removing impurities and dirt contained in the fiber materials, include various fiber materials such as silk and promix and natural cellulosic fiber materials in addition to the above-mentioned natural cellulosic fiber materials. And synthetic fiber, blended, twisted or woven fiber material.

Examples of the enzymes that can be used in the present invention include cellulolytic enzymes, pectin degrading enzymes, lipolytic enzymes, proteolytic enzymes, and / or modified enzymes thereof, and enzymes immobilized on a carrier.

For example, cellulolytic enzymes used for weight reduction include β-1,4-glucanase, β-glucosidase, cellobiase and cellulase.

The pectin degrading enzymes used for scouring include pectin esterase, polymethylgalacturonase, polygalacturonase, polymethylgalacturonic acid lyase, polygalacturonic acid lyase, protopectinase, pectinase and the like.

When the present invention is applied to fiber treatment, the treatment conditions may be such that the temperature in the enzyme adsorption step is set to a temperature at which the enzyme to be used acts, and particularly preferably 20 to 60 ° C.

The temperature in the enzyme desorption step may be set to a temperature at which the enzyme used is deactivated, and is particularly preferably 70 to 100 ° C.

The number of repetitions of these steps may be any number as long as the strength of the fiber material is not extremely reduced.
Desirable is 2 to 10 times.

[0018]

EXAMPLE 1 ( Scruuring by continuous enzymatic treatment of fiber structure) Surfactant Liponox NCI (manufactured by Lion Corporation) was dissolved in water to form a solution having a concentration of 0, 0.01 or 0.1% by weight. Prepared.

Next, 125 g of desizing-free 100% cotton broad (Kurabashi Boseki Co., Ltd., product number AB5272) was immersed in each of the solutions to give 95 g.
After heat treatment at 5 ° C. for 5 minutes, it was squeezed at a drawing ratio of 70% (step 1).

Subsequently, pectinase PL (Amano Pharmaceutical Co., Ltd.)
Was dissolved in 20 mM sodium acetate buffer (pH 3.5)
The cotton cloth subjected to the step 1 is immersed in 5 L of the enzyme solution adjusted to 0.1% by weight and subjected to the enzyme treatment at 50 ° C. for 10 minutes.
% (Step 2). Thereafter, similarly, Step 1 and Step 2 were alternately repeated three times, and finally, Step 1 was additionally performed.

Subsequently, each cotton cloth was washed with water and dried to obtain a cotton cloth scoured by a continuous enzyme treatment method.

In this example, step 1 corresponds to the enzyme desorption step of the present invention, and step 2 corresponds to the enzyme adsorption step.

Comparative Example 1 (Yeast by steaming heat treatment of fiber structure)
Elementary scouring) The same cotton cloth as used in Example 1 was applied to pectinase PL
Is immersed in a 20 mM sodium acetate buffer (pH 3.5) containing 5.0% by weight and 0.1% by weight of Liponox NCI, an enzyme treatment liquid is applied to a cotton cloth at a squeezing ratio of 100%, and steamed at 50 ° C. for 45 minutes. Was. Subsequently, after washing with water at 95 ° C. for 10 minutes, washing with water and drying were carried out to obtain a cotton cloth which had been subjected to enzymatic scouring treatment by steam heat treatment.

Measurement results Residual amount of pectin A cotton cloth was immersed in a 0.02% by weight ruthenium red aqueous solution at a bath ratio of 1:40, dyed by reciprocal shaking at 30 rpm at 80 rpm for 10 minutes, washed lightly with water, and washed at a bath ratio of 1:80. 10 minutes in a 50 ° C water bath
Shake at 0 rpm. After dyeing, the cotton cloth is air-dried, and the reflectance of visible light at 540 nm is measured using a spectrophotometer (U-4000 Type Spectrophotometer Co., Ltd.)
After measurement by Hitachi, Ltd.), the dyeing amount K / S was calculated by the Kubelka-Munk formula, and this was defined as the residual amount of pectin.

At this time, the smaller the value of K / S, the smaller the residual amount of pectin.

Water absorption The water absorption was measured in accordance with JIS L 1096 6.26.1 Water absorption rate B method (Bilec method). Table 1 shows the above results.

[0027]

[Table 1]

As shown in Table 1, the sample of Example 1, which was scoured by continuous enzymatic treatment, had a smaller residual amount of pectin and higher water absorption than Comparative Example 1. This indicates that the enzyme treatment was effectively performed by repeatedly performing the adsorption and desorption of the enzyme. Furthermore, the enzyme concentration can be reduced, and the effect of the present invention is clearly recognized.

Example 2 (Enzyme by continuous treatment of fiber structure)
The same cotton cloth used in Example 1 was subjected to desizing, scouring, bleaching, and mercerizing by a generally known method.

The cotton cloth thus prepared is immersed in an enzyme solution prepared by dissolving Nagase cellulase (manufactured by Nagase Seikagaku Co., Ltd.) in 20 mM sodium acetate buffer (pH 5.0) to 0.4% by weight. After enzymatic treatment at 40 ° C. for 10 minutes (bath ratio 1:40), the mixture was squeezed at a squeezing ratio of 70% by weight (step 2). Then 95
After being immersed in hot water of not less than 5 ° C. for 5 minutes, it was squeezed at a squeezing rate of 70% by weight (step 1). Thereafter, similarly, Step 1 and Step 2 were alternately repeated three times.

This cotton cloth was washed with water and dried to obtain a cotton cloth which had been subjected to weight reduction by a continuous enzyme treatment method. The weight loss rate of the cotton cloth was 2.85%.

In this example, step 2 corresponds to the enzyme adsorption step of the present invention, and step 1 corresponds to the enzyme desorption step.

Example 3 (Enzyme by continuous treatment of fiber structure)
Example 2 ) Example 2 was carried out using a polymer-modified cellulase (manufactured by Nagase Seikagaku Corporation) instead of Nagase Cellulase. The weight loss rate of the cotton cloth was 2.81%.

Comparative Example 2 (Yeast by steaming heat treatment of fiber structure)
The cotton fabric mercerized up used under reduction processing) Example 2 was prepared Nagase cellulase (Nagase Biochemicals Co., a Ltd.) to dissolve to 0.7 wt% in 20mM sodium acetate buffer (pH 5.0) enzyme It was immersed in the solution and squeezed at a squeezing ratio of 70% by weight. right away
A steam heat treatment was performed at 40 ° C. for 60 minutes.

Next, washing with hot water, washing with water, and drying were carried out to obtain a cotton cloth which had been subjected to enzyme weight reduction by steaming and heat treatment. The weight loss rate of the cotton cloth was 2.80%.

Measurement Results Test pieces were cut from 20 random locations on the cotton cloth, and their tensile strength (warp direction) was measured according to the JIS L1096 6.12.1A method (labeled strip method). Table 2 shows the results.

[0037]

[Table 2]

In Examples 2, 3 and Comparative Example 2, the required time was the same, and the same weight loss rate was obtained. While the tensile strength of Comparative Example 2 varied considerably, Examples 2 and 3
In this case, the dispersion was small and the weight reduction processing could be performed more uniformly.

[0039]

As described above, in the enzyme treatment method of the fiber material reduction processing and the scouring step, the amount of the enzyme used is reduced by performing the enzyme adsorption step and the enzyme desorption step alternately, as compared with the ordinary batch processing or continuous steaming heat treatment. In addition, the fiber material can be uniformly enzymatically treated.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Minio Sugai 1800, Kusabe, Sakai City, Building No. 903 (72) Inventor Masataka Funayama 14-5, Shimogita-cho, Neyagawa-shi, Osaka Kurashiki Textile Co., Ltd. (72) Inventor Susumu Katsuen 2-4-13-1 Kutaro-cho, Chuo-ku, Osaka City, Osaka Prefecture Kurashiki Spinning Co., Ltd. Central Research Institute Co., Ltd. (72) Inventor Kenichi Takami 1-2-7 Nishiki, Naka-ku, Nagoya City, Aichi Prefecture Amano Pharmaceutical Co., Ltd.

Claims (2)

[Claims] 1. A method for enzymatic treatment of cellulose fibers, silk, promixes and blended, twisted or woven fibers thereof with synthetic fibers, a step of applying an enzyme-containing treatment solution to the fibers, Repeating the step of desorbing the applied enzyme-containing treatment liquid by heat treatment. 2. The method according to claim 1, wherein the enzyme is a cellulose-degrading enzyme, a pectin-degrading enzyme, a lipolytic enzyme, a proteolytic enzyme and / or an enzyme obtained by modifying them and an enzyme immobilized on a carrier. Method for continuous enzyme treatment of fibers.