JPH06313271A - Method for antistaining cellulose textile - Google Patents

Abstract

PURPOSE:To impart cellulose textiles with antistaining performance having washing resistance. CONSTITUTION:A cellulose textile such as of cotton, hemp or rayon is imparted with a treating solution containing a water-soluble cellulose derivative and a crosslinking agent followed by drying and heat treatment. This process is repeated twice.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing method for imparting antifouling property having washing resistance to cellulose fibers.

[0002]

2. Description of the Related Art Conventionally, antifouling processing of textiles has been extensively studied, but since cellulose fibers, especially cotton have water absorption, they are less likely to be soiled than synthetic fibers, and even if soiled, they easily fall off. Therefore, research on synthetic fibers has become mainstream. Even in the case of antifouling processing on a fabric that is interwoven with cellulose fibers and synthetic fibers, only the antifouling processing is applied to the synthetic fiber side, which is also easily soiled, which is effective against cellulose fibers, and It is the actual situation that a processing method having washing resistance has not yet been developed even at the present time.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to impart a stain-proofing property having washing resistance to cellulose fibers.

[0004]

The present invention achieves the above object and has the following structure. That is, the present invention is a method for antifouling a cellulose fiber, which is characterized in that the step of impregnating a cellulose fiber with a treatment liquid containing a water-soluble cellulose derivative and a crosslinking agent, followed by drying and heat treatment is repeated twice. It is what Hereinafter, the present invention will be described in detail.

The cellulose fibers used in the present invention are cotton,
It means hemp or rayon fiber and the like, and its form may be any form such as yarn, woven fabric, knitted fabric, non-woven fabric and the like. In the present invention, first, a treatment liquid containing a water-soluble cellulose derivative and a crosslinking agent is applied to the above fibers. Examples of the water-soluble cellulose derivative used here include carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, methyl cellulose, carboxymethyl hydroxyethyl cellulose and the like. These water-soluble cellulose derivatives are used in an amount of 0.1-10% by weight of fiber.
It is added in the range of 0.3% by weight, preferably 0.3-1% by weight
Is. If it is less than 0.1% by weight, the effect of the present invention cannot be sufficiently obtained, and if it exceeds 10% by weight, the viscosity becomes high and the squeezing roll becomes difficult to operate during impregnation of the treatment liquid, which is not preferable. As the cross-linking agent, a general cross-linking agent such as glyoxal resin, epoxy resin, urethane resin and melamine resin is used. In this case, the amount of the cross-linking agent applied is 4 to 8% by weight based on the solid weight of the fiber.
If it is less than 4% by weight, a sufficient crosslinking effect cannot be obtained.
Even if the cross-linking agent is added in an amount exceeding the weight percentage, the effect of the present invention tends to no longer be improved.

In the method of the present invention, the treatment liquid in which the above water-soluble cellulose derivative and the crosslinking agent are mixed is applied to the fiber.
The treatment method at this time may be applied to the fiber by any known method. Practically, the padding method is most preferable.

After applying the treatment agent, drying and heat treatment are performed. Drying is performed at 80 to 180 ° C, and after drying, heat treatment is performed at 110 to 180 ° C for several minutes. If the temperature is below 110 ° C, it will not be sufficiently crosslinked, and
If the temperature exceeds 180 ° C, it may cause fiber hardening and yellowing.
Not preferable.

In the method of the present invention, the steps from the impregnation of the treatment liquid to the heat treatment are repeated twice. The present invention has the above configuration.

[0009]

When the treatment step with the water-soluble cellulose derivative and the cross-linking agent is repeated twice as in the present invention, the water-soluble cellulose derivative is more uniform on the cellulose fiber than when the treatment agent is simply doubled in concentration. It is presumed that since the film is formed on the resin, the strength thereof is increased, and at the same time, the cross-linking force between the cellulose fiber and the water-soluble cellulose derivative is increased, so that the antifouling property excellent in washing resistance is exhibited.

[0010]

The present invention will now be described with reference to examples.
The measurement and evaluation of the performance of the fabrics in the examples were carried out by the following methods with respect to samples after processing and after 20 times of home washing (JIS-L0217, 103 method). (1) Stain removal property 0.2 ml of heavy fuel oil B was dropped on the sample, and after 20 hours of standing, the state of stain remaining after home washing was judged by a gray scale for contamination (5: good to 1: poor).

Example 1 100% cotton woven fabric (warp
60s, weft 60s, warp density 140 yarns / inch, weft density 80 yarns / inch) are prepared by impregnating the treatment liquid of the following formulation 1 with a mangle and squeezing with a pick-up 80%, then 110
It was dried at 0 ° C for 2 minutes. [Formulation 1] Carboxymethylcellulose 10 g / l (Daiichi Kogyo Seiyaku Co., Ltd., water-soluble cellulose derivative) Elastron BN-69 50 g / l (Daiichi Kogyo Seiyaku Co., urethane resin) Elastron Catalyst 64 2.5 g / l (Catalyst manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) Sumitex Softener S-100 30 g / l

After that, using a pin tenter, at 160 ° C.
A dry heat treatment was performed for 2 minutes. The above process from impregnation of the treatment liquid to heat treatment was repeated twice to obtain the antifouling cloth of the present invention.

For comparison with the present invention, a sample subjected to the treatment from the impregnation of the treatment liquid to the heat treatment only once (Comparative Example 1) and an untreated sample (Comparative Example 2) were prepared and provided for comparison.
The performance of the present invention and comparative work cloth and the like is measured and evaluated,
The results are shown together in Table 1.

[0014]

[Table 1]

As is clear from Table 1, the processed cloth according to the present invention has good antifouling performance and excellent washing resistance.

[0016]

EFFECT OF THE INVENTION According to the method of the present invention, it is possible to impart the stain-removing property excellent in washing durability to the cellulose fiber. The fabric processed by the method of the present invention has excellent antifouling performance, and thus has a working wear, a shirt, children's clothing,
Most suitable as a material for sheets and aprons.

Claims (1)

[Claims] 1. An antifouling stain-resistant cellulose fiber, comprising the steps of impregnating a cellulose fiber with a treatment liquid containing a water-soluble cellulose derivative and a crosslinking agent, followed by drying and heat treatment twice. Processing method.