JPH11124779A - Processing of fabric including solvent spun cellulose fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a processing method of a fabric including a solvent spun cellulose fiber, capable of expressing a deep color, and hardly causing progress of fibrillation even by repeated washing. SOLUTION: This processing method comprises subjecting a fabric including a solvent spun cellulose fiber to a batch-type exhaustion dyeing, subjecting the dyed fabric to a cross-linking treatment with a cellulose reactant resin, and further subjecting the fiber surface of the treated fabric to a friction treatment in a wet state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for processing a fabric containing solvent-spun cellulose fibers.

[0002]

2. Description of the Related Art In general, solvent-spun cellulose fibers undergo a fibrillation phenomenon by rubbing the fiber surface in a wet state, and as a result, a natural brushed feeling and a soft feeling are obtained. There are many products on the market. On the other hand, it is also true that there is a need for a product having a plain fabric surface that does not cause fibrillation at all (hereinafter, referred to as non-fibril). In order to minimize the friction on the fiber surface during the processing process, desizing, scouring, bleaching, dyeing and finishing are performed in a continuous manner. Is generally used to carry out a crosslinking reaction treatment.

However, in such a conventional method, since the dyeing is limited to a continuous method, a deep color cannot be obtained, and the fibril can be washed several times only by a crosslinking reaction treatment with a cellulose-reactive resin. However, non-fibrils lack the washing durability.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made in view of such circumstances, and a solvent-spun cellulose which expresses a deep color and does not progress fibrillation even after repeated washing. It is intended to obtain a fiber-containing fabric.

[0005]

The present invention attains the above object and has the following constitution. That is, in the present invention, after performing a batch-type exhaust dyeing on a solvent-spun cellulose fiber-containing fabric, a crosslinking reaction treatment is performed with a cellulose-reactive resin, and then a friction treatment is performed on the fiber surface in a wet state of the fabric. A gist of the present invention is a method of processing a solvent-spun cellulose fiber-containing fabric.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
In the present invention, a solvent-spun cellulose fiber-containing fabric is used as a fabric to be processed. Solvent-spun cellulose fibers are regenerated cellulose fibers obtained by dissolving pulp in N-methylmorpholine-N-oxide, filtering to remove impurities, and then spinning the fibers. It has high degree of polymerization, crystallinity and orientation, high strength, low elongation, and alkali resistance.

[0007] Fabrics such as woven fabrics, knitted fabrics and nonwoven fabrics containing the solvent-spun cellulose fibers are used as the fabric to be processed in the present invention, but the content of the solvent-spun cellulose fibers may be in any ratio. do not do. Of course, 1
It may be 00%. Other fibers mixed with the solvent-spun cellulose fibers include natural cellulose fibers such as cotton and hemp, regenerated cellulose fibers such as rayon, cupra, polynosic, and high wet modulus rayon, wool, and the like.
Examples include natural fibers such as silk and synthetic fibers such as nylon, polyester and acrylic.

[0008] In the present invention, a batch-type exhaust dyeing is first performed on the above-mentioned solvent-spun cellulose fiber-containing cloth. In the case of the batch exhaust dyeing, the dyeing is performed by a general dyeing method generally used by using a general liquid dyeing machine, a gas jet dyeing machine, a Wins dyeing machine, a jigger or the like. Deep color can be obtained by the exhaust dyeing of the batch type. In the present invention, the dyed fabric is subjected to a cross-linking reaction treatment using a cellulose-reactive resin. Examples of the cellulose-reactive resin used here include dimethylol ethylene urea resin, dimethylol hydroxyethylene urea resin, hexamethylol melamine resin, and dimethylol alkyl triazone resin.

Using the above resin, a resin concentration of 5 to 30
%, An aqueous solution containing a metal salt-based catalyst is prepared, the cloth is padded with the aqueous solution, and squeezed with a pickup of 50 to 120%.
Subsequently, after preliminary drying, 1-35 at 150-180 ° C.
The crosslinking reaction is carried out by heat treatment for a minute. If the resin concentration is 5% or less, the fabric cannot be non-fibrillated even if a friction treatment is performed on the fiber surface in a wet state in the next step.
It is not preferable because it causes hand hardening. Further, when the heat treatment temperature is lower than 150 ° C., the crosslinking reaction hardly occurs. On the other hand, when the heat treatment temperature is higher than 180 ° C., an excessive decrease in strength and yellowing occur, which is not preferable. If the heat treatment time is 1 minute or less, the crosslinking reaction hardly occurs, and if the heat treatment time is 3 minutes or more, an excessive decrease in strength and yellowing occur, which is not preferable. Therefore, it is preferable to determine the optimal conditions for the temperature and time of the heat treatment by the preliminary test within the above-mentioned ranges.

After the crosslinking reaction, in the present invention, the fiber surface is subjected to a friction treatment in a wet state of the fabric. In order to perform a friction treatment on the fiber surface, the fabric is provided with a moisture content of 30% or more and treated with a hand processing machine such as a tumbler or an air current machine, or a liquid jet dyeing machine, an air jet dyeing machine, a win The treatment is performed using a batch dyeing machine such as a jigger. Processing time is usually 60
It is about 900 minutes. If the processing time is less than 60 minutes, complete non-fibrillation is not achieved, and if the processing time is more than 900 minutes, no further effect can be obtained, resulting in waste of energy. Although the processing temperature can be room temperature, the higher the temperature, the softer the dough and the less the threads and the less atari.

As described above, when the crosslinked solvent-spun cellulose fiber-containing fabric is treated in a wet state, the fine fibril fuzz whose strength has been reduced in the wet state is easily removed by rubbing or collision of the fibers. In addition, the weight of the dough increases due to the moisture, and the impact force and frictional force when the cloth hits the wall surface in the device increases, and the falling off of the fibril fluff is promoted.

[0012]

According to the present invention, when a cloth containing a solvent-spun cellulose fiber is subjected to a crosslinking reaction treatment with a cellulose-reactive resin as in the present invention,
When the amorphous part of the cellulose molecule was cross-linked and firmly fixed, and a friction treatment was applied to the fiber surface in the next step in a wet state without any further fibrillation, it occurred during the processing step The fibril fluff falls off due to the friction of the fiber surface and is completely removed, thereby enabling the non-fibrillation of the solvent-spun cellulose fiber-containing fabric. In addition, during the crosslinking reaction of the fibrin-reactive resin, the strength of the fibril fuzz decreases, so that the fibril fuzz falls off during the friction treatment of the fiber surface, and the non-fibrillation of the fabric is easily performed.

Since the fabric has no room for fibril fluff, the washing durability of non-fibril performance is very good. In addition, this processing method eliminates the need for consideration to prevent the generation of fibrils during the processing steps from hair burning and desizing to final finishing. In particular, exhaust dyeing becomes possible in the dyeing process. Deep color expression is possible.

[0014]

EXAMPLES Next, the present invention will be described more specifically with reference to examples. The evaluation of the performance of the fabric in the examples was performed by the following method. (1) Non-fibril feeling The presence or absence of fibrils was evaluated by the naked eye judgment of the samples after finishing processing and 10 times after home washing according to JISL-0217 (method 103). ○ No fibrils △ Some fibrils ×
Many fibrils (2) Depth of color The processed sample was visually inspected for the presence of color depth.

Example 1 A 30/1 twill fabric (warp density: 130 / inch, weft density: 82 / inch) composed of 100% solvent-spun cellulose fiber (Lyocell) was prepared and glued by a conventional method. without,
After scouring and bleaching, dyeing is performed at 80 ° C. × 60 minutes using a liquid jet dyeing machine according to the following prescription 1, followed by dye fixation at 70 ° C. × 60 minutes with 15 g / l of soda ash. Was. Formulation 1 Cibacron Yellow LS-R 1.5% owf (reactive dye, manufactured by Ciba Geigy) Cibacron Scarlet LS-2G 2.2% owf Cibacron Green LS-3B 2.5% owf Glauber's salt 30g / liter

Next, using a continuous resin processing apparatus, the resin is immersed in a cellulose-reactive resin treatment liquid having the following formulation 2 and squeezed with a pickup of 80%.
A heat treatment was performed at 0 ° C. for 3 minutes to perform a crosslinking reaction treatment. Formulation 2 Sumitex Resin NS-19 200 g / liter (Sumitomo Chemical Co., Ltd., glyoxal derivative) Sumitex Accelerator X-80 60 g / liter (Sumitomo Chemical Co., Ltd., metal salt catalyst)

Next, using a liquid dyeing machine “UNIACE” manufactured by Nippon Dyeing Machine Co., Ltd., the surface of the fiber of the fabric is subjected to friction treatment by rubbing with water at a bath ratio of 1:10 at room temperature for 180 minutes. Was. Then, using a padder, high softer K-
10 (manufactured by Meisei Chemical Co., Ltd., silicone softener) 20 g
/ Liter of padding and squeezing at 80% squeezing rate.
Drying and tentering set at 10 ° C. × 2 minutes were performed to obtain the processed fabric of the present invention.

For comparison with the present invention, a work cloth for comparison (Comparative Example) was produced in exactly the same manner as in the present embodiment except that the friction treatment step for the fiber surface using "UNIACE" was omitted in the present embodiment. 1) was obtained. For comparison with the present invention, the same dough as in the present example was used for baking, desizing, scouring, bleaching, and continuous dyeing. After padding (pickup 80%), pre-drying at 110 ° C for 2 minutes, 150
A heat treatment at 30 ° C. for 3 minutes and a tentering set were performed to obtain a work cloth for comparison (Comparative Example 2).

Formulation 3 Sumitex Resin NS-19 200 g / liter (Glyoxal derivative manufactured by Sumitomo Chemical Co., Ltd.) Sumitex Accelerator X-80 60 g / liter (metal salt catalyst manufactured by Sumitomo Chemical Co., Ltd.) HiSofter K-10 20 g / liter (Meisei Chemical Co., Ltd., silicone softener)

The performances of the present invention and the work cloth for comparison were evaluated, and the results are shown in Table 1.

[0021]

[Table 1]

As is evident from Table 1, the processed fabric according to the method of the present invention has a deep color and a good non-fibril feeling even after 10 washings at home.

[0023]

According to the present invention, a solvent-spun cellulose fiber-containing fabric can be imparted with a non-fibrillar feeling having a deep color and good washing durability.

Claims (1)

[Claims] Claims: 1. A solvent-spun cellulose fiber-containing fabric is subjected to a batch exhaustion dyeing, followed by a crosslinking reaction treatment with a cellulose-reactive resin, followed by a friction treatment on the fiber surface in a wet state of the fabric. A method for processing a solvent-spun cellulose fiber-containing fabric, comprising: