JPH08209538A - Crease-resistant finishing of cellulose fiber cloth - Google Patents

Abstract

PURPOSE: To improve the crease-resistance of a cloth woven or knit especially with cellulose fiber yarn. CONSTITUTION: A cloth woven or knit with cellulose fiber yarn is scoured and immersed in a treating bath containing >=20% cationizing agent to effect the cationizing treatment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wrinkle-proof treatment method for improving the wrinkle-proof property of a fabric knitted using cellulose fiber yarns, preferably a knitted fabric made of purified cellulose fiber yarns.

[0002]

2. Description of the Related Art Recently, a purified cellulose fiber called "TENCEL" has been attracting attention, and its use in various fields has been vigorously developed.

This purified cellulose fiber is similar to conventional rayon in that wood pulp is used as a raw material, but the spinning method is different, and the wood pulp is formed by spinning by dissolving it in an amine oxide solvent. It has physical properties different from those of cellulose fiber and synthetic fiber.

However, this refined cellulose fiber undergoes fibrillation (separation) to harden the texture, particularly when moistened, and the hue also largely whitens to a whitening phenomenon, and the fibers rub against each other. However, there is a drawback that pilling may occur. And if this defect is neglected, it not only reduces the value of the product, but also the application,
The range of use is limited and it ends.

Therefore, various attempts have been made to prevent this fibrillation. For example, so-called enzyme treatment (bioprocessing) is performed as a treatment of cellulose fibers and constituents thereof, such as cutting the fibrillated fibers by cellulase treatment. Is known. (Japanese Patent Publication Sho-49-38
No. 946)

The present inventors have also added a kneading process called a hair raising process in a wet state to a filamentous, woven or knitted product made of the above-mentioned purified cellulose fibers or a product using them to fibrillate the fibers, A method for suppressing pilling by removing the fibrillated fibers by treatment with a cellulase enzyme and a method for preventing fibrillation by cationizing the surface of the purified cellulose fiber were previously proposed. (Japanese Patent Application No. 5-133833), (Japanese Patent Application No. 6-169977)
issue).

[0007]

However, all of the above methods are methods for preventing fibrillation and have some effect on the same treatment. However, when this was once knitted or woven into a fabric state, it was surprisingly recognized that the wrinkle resistance was remarkably improved.

[0008] Of course, many inventions have already existed for improving the wrinkle resistance of fabrics, and processing with a resin is generally known, but there is no wrinkle resistance using a cationization treatment of a fabric with cellulose fibers. Not reported and unknown.

In view of the above situation, the present invention aims at improving the wrinkle resistance of a cloth which is woven or woven by using cellulose fibers as yarns.

[0010]

Means for Solving the Problems That is, the feature of the present invention for achieving the above object is to scouring a cloth knitted with cellulosic fiber yarns and then cationizing it with a cationizing agent at a concentration of at least 20%. The cationization treatment is performed by immersing the cloth in the treatment bath.

Here, the article to be treated by the method of the present invention is a cloth knitted with cellulose fiber yarns. The effect cannot be expected very much when the treatment is performed in a yarn form and then knitted. As the cellulose fibers, those conventionally known as cellulose fibers such as cotton and staple fibers are used, but it is particularly remarkable for purified cellulose fibers called TENCEL. Cellulose fibers need not be 100% of the yarns that make up the fabric,
If a small amount, other fibers may be partially mixed.

The cationizing agent used in the present invention is a cation compound having a reactive group for cellulose fibers, and a known cationizing agent can be used. A cation compound containing a quaternary ammonium salt or a pyridinium compound can be used. And quinolium compounds are included, and among them, cationic compounds containing a quaternary ammonium salt are most preferable. Specifically, there is dimethyltrimethylammonium chloride or the like, and it is also possible to bind a cationic polymer.

The processing method is not particularly limited, but it is a low temperature method in which it is immersed at room temperature for a long time (about 12 to 16 hours), and it is soaked at room temperature and the temperature is sequentially raised to 50 to 70 ° C. There is a temperature increasing method of performing time treatment, and further, a step method of further treating at room temperature for about 1 hour, then raising the temperature to about 50 ° to 70 ° and treating for about 30 to 50 minutes. To be selected. In this case, the concentration of the treatment bath is at least 20%, preferably 30% or more, and if the concentration is too low, a sufficient effect cannot be obtained. Further, after immersing in a treatment bath containing a cationizing agent for a predetermined time, after taking out,
It is preferable to wash with a nonionic activator in a soaping step after washing with water.

The above cationization treatment is usually applied prior to the dyeing step. When the main processing is performed after the dyeing process, the color tone may change depending on the type of dye. When it is used without dyeing, it moves to the next step as it is, and when dyeing, in order to prevent the occurrence of stain spots due to the rapid dyeing phenomenon at low temperature in the dyeing process, a low concentration of anion activity After the agent bath treatment, that is, the masking process, the process proceeds to the dyeing process using a direct dye or a reactive dye as in the case of ordinary cellulose fibers. Usual dyeing such as woven / knitted anti-dyeing, mechanical dyeing, dipping in a dyeing bath, pad-dry continuous method and the like are applied as the dyeing method.

[0015]

According to the above-mentioned method of the present invention, the cationized cellulose cloth has improved wrinkle resistance and can suppress the generation of wrinkles. The reason for this is that the cellulose fibers and the reactive groups for the cellulose fibers contained in the cationizing agent react with each other to chemically protect the surface of the fiber cloth and mask the active groups of the purified cellulose fibers. Conceivable.

[0016]

EXAMPLES Specific examples of the present invention will be described below.

(Examples 1 to 3 and Comparative Example 1) First, two No. 47 yarns of purified cellulose fiber (trade name TENCEL) yarn were knitted into a flat knitted fabric of 12 gauges aligned and shown in Table 1. Four kinds of test samples, three samples each, were prepared. Then, this was processed in the following steps in the order of scouring, cationization treatment, water washing, soaping, masking and dyeing, and its wrinkle resistance was confirmed by parental approval. In addition,
The thing of the comparative example 1 which did not perform only said cationization process was produced, and the wrinkle prevention property was similarly confirmed for comparison.

A. Treatment processing Refining step The product was immersed in a treatment bath of a nonionic activator to remove oil, dirt, and foreign substances in the fiber cloth.

Cationization Step ○ Cationizing Agent A cationizing agent (trade name; Cathionone UK, manufactured by Yatsha Yushi Co., Ltd.) was added to the concentration of 400 g / l of flaky caustic soda in an amount of 50 g / l to prepare a treatment bath. ○ Low temperature method The test piece was immersed in the treatment bath at room temperature for 1 hour. ○ Temperature rising method It was immersed in a treatment bath at room temperature in the same manner, and this was heated to 60 ° C and immersed for 1 hour. ○ Step method Immerse at room temperature for 1 hour, then raise the temperature to 60 ° C and 45
Soaked for a minute.

Washing with water and soaping step The sample treated in the above step was washed with water and then washed with a treatment bath having the same concentration of the same nonionic activator as used in the above step.

Masking Step Anion activator (trade name: 5MA51, manufactured by Yatsusha Yushi Co., Ltd.) was immersed in a treatment bath of 40 g / l at 80 ° C. for 20 minutes.

Dyeing method After dyeing under the same conditions in the same dyebath using an ordinary direct dye, washing with water and soaping were performed.

B. Confirmation of wrinkle resistance Each of the test pieces obtained as described above was cut into 1 m square cloth, immersed in water, squeezed using a squeezing machine, and the state of wrinkles thereafter was visually confirmed. The results are also shown in Table 1.

[0024]

[Table 1]

From the above table, it can be seen that each fabric treated by the method of the present invention has a better anti-wrinkle effect than the comparative examples not treated by cationization. Therefore,
It can be seen that treating the purified cellulose fiber fabric with a cationizing agent improves the wrinkle resistance of the fabric.

(Example 4) A plain weave fabric was woven from purified cellulose yarn of cotton count 30 number single yarn, cut into a size of 1 m square, and immersed in a 40% cationization treatment bath. On the other hand, similar fabrics were prepared, and both were placed side by side, immersed in a water bath, squeezed with a squeezing machine, and the state of wrinkles was examined. As a result, almost no wrinkles were found in the treated fabric, but untreated ones became wrinkles, and these wrinkles could not be resolved.

[0027]

As described above, the present invention is a method of scouring a cellulose fiber cloth and then cationizing the cloth by immersing the cloth in a treatment bath containing a cationizing agent at a concentration of at least 20%. By applying this method to cellulose fiber cloth, a remarkable and unexpected improvement in the wrinkle resistance of the cloth has been observed in the past. Moreover, this treatment is different from resin processing and the like, and the performance based on the fiber itself is used. Since it is an improvement, it is a wrinkle-proofing method which can maintain wrinkle-proofness over a long period of time and is extremely useful in combination with the ease of treatment and the fact that there is no need for equipment enhancement.

Claims (2)

[Claims] 1. A cationization treatment is carried out by scouring a cloth knitted with cellulose fiber yarns and then immersing the cloth in a treatment bath containing a cationizing agent at a concentration of at least 20%. Wrinkle treatment method. 2. The method for preventing wrinkles of a cellulose fiber cloth according to claim 1, wherein the cationizing agent is a cationic compound containing a quaternary ammonium salt.