JPH0598567A - Process for stiff-finishing and stain-proofing of cellulosic fiber structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a method for imparting a hard-finishing property having wash durability and an antifouling property to a cellulosic fiber structure. [Structure] Cellulosic fiber structure at 5 to 20 ° C. and 4
Immerse in a sulfuric acid solution of 5 to 80 ° Be for 1 to 10 seconds, wash with water,
It is characterized in that it is dried and then an antifouling agent is applied.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of hard-finishing and antifouling processing of a cellulosic fiber structure having washing durability.

[0002]

2. Description of the Related Art Various methods for imparting a hemp-like hard finish to a cellulosic fiber structure have been conventionally used. For example, as a method of swelling and hardening with alkali,
There is a method of performing a low temperature mercerizing process of sodium hydroxide. Further, a resin that imparts hardness upon finishing, for example, hexamethylolmelamine, aminoplast resin such as trimethylolmelamine, vinyl acetate, ethylene vinyl acetate,
There are a method of applying an emulsion of a synthetic resin such as acryl and urethane, a method of crosslinking a water-soluble polymer compound such as polyvinyl alcohol and starch with melamine and the like.

However, such conventional methods have various drawbacks. For example, in the low temperature mercerizing method, if an antifouling agent is used, the antifouling performance is improved, but there are drawbacks that the fabric becomes too hard and chalk marks are generated and the durability against washing is poor. Furthermore, in the method by finishing treatment,
Although hardness can be imparted, there are drawbacks in that the antifouling property is not significantly improved even if an antifouling agent is used, the washing durability is poor, and the strength is greatly reduced by the crosslinking method. Due to the above problems, it is extremely difficult to impart antifouling performance while maintaining the hard-finishing washing durability, and there has been no satisfactory treatment method in the past.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for imparting a hard-finishing property having washing durability and an antifouling property to a cellulosic fiber structure.

[0005]

The above object is to immerse a cellulosic fiber structure in a sulfuric acid solution at 5 to 20 ° C. and 45 to 80 ° Be for 1 to 10 seconds, wash it with water and dry it, and then to prevent soiling. This is achieved by a method of hard finishing and antifouling processing of a cellulosic fiber structure characterized by adding a processing agent.

The present invention will be described in detail below.

The cellulosic fiber structure referred to in the present invention is a woven fabric, a knitted fabric or a non-woven fabric containing cellulosic fibers, such as cotton,
Examples include hemp and rayon alone, or mixed spinning of these cellulosic fibers and other fibers such as polyester, polyamide and acrylic, and mixed woven fabric.

The cellulosic fiber structure is first treated with sulfuric acid, and the sulfuric acid concentration is 45 to 80 ° Be, preferably 50 to 60 ° Be, and the temperature condition is 5 to 20 ° C, preferably 10 to 15 ° C. Yes, the processing time is 1 to 10 seconds, preferably 3 to 7 seconds. High sulfuric acid concentration, high temperature,
When the time is long, the cellulosic fibers are deteriorated and the physical properties are remarkably deteriorated. On the other hand, when the sulfuric acid concentration is low, the temperature is low, and the treatment time is short, the sulfuric acid treatment has no effect and the desired hard finish is not exhibited at all. After such sulfuric acid treatment, it is washed with water, neutralized if necessary, then washed with water and dried.

The cellulosic fiber structure which has been treated with sulfuric acid is next provided with an antifouling agent, and as such an antifouling agent, a polyester resin (for example, Nicepol PR-
80: Nika Chemical Co., Ltd.), polyhydric alcohol fatty acid ester (for example, Sansofter OA80: Nika Chemical), fatty acid ester (for example, Sansoflon WP: Nika Chemical), silicon type (for example, wet silicon EP-68: Nika). Chemistry) and the like.

The method of applying the antifouling agent is not particularly limited, and any suitable method such as a pad method, a dipping method, a spraying method or a coating method may be used as long as it can be applied to the surface layer of the cellulosic fiber structure. For example, in the case of the pad method, the pickup rate is 2
Padding may be performed at 0 to 100%, preferably 40 to 80%. Then, the fiber structure is, for example, 60 to 1
Dry at 70 ° C. for 30-300 seconds.

[0011]

[Example] A fine cotton thin plain weave fabric, warp, weft 100 count twin yarn, density 68 warp / inch, weft 47 thread / inch, basis weight 65 g /
The m ² product was quired, desizing, scouring and bleaching in the usual manner.

The plain woven fabric was treated with sulfuric acid at a concentration of 53 ° Be and a temperature of 11
After immersing in a sulfuric acid solution at 0 ° C for 4 seconds, it was immediately squeezed with a mangle, washed with water, further neutralized in an aqueous soda ash solution, sufficiently washed with water, and then squeezed and dried with a mangle.

Then, a 5% by weight aqueous solution of Nicepol PR86 (manufactured by Nichika Kagaku Co., Ltd.) as an antifouling agent was padded on the plain woven fabric at a pick-up rate of 70%, and then at 2O 0 C for 2 hours.
After drying for a minute, the product of Example 1 was obtained.

Comparative Example 1 The same processing as in Example 1 was performed except that the same cotton woven fabric as that used in Example 1 was used and the antifouling agent was not added in the same processing as in Example 1. The product of Comparative Example 1 was obtained.

Comparative Example 2 Using the same cotton plain fabric as used in Example 1, the plain fabric was immersed in a solution of 200 g / l of caustic soda at 0 ° C. for 30 seconds, immediately washed with hot water and neutralized. It was washed with water and dried. Then, the same antifouling agent as in Example 1 was applied to obtain a product of Comparative Example 2.

Comparative Example 3 The same cotton plain fabric as used in Example 1 was used, and PVA-117 (manufactured by Kuraray Co., Ltd., polyvinyl alcohol) was added to the plain fabric in an amount of 1.5% by weight and beccamine. L-8
(Dai Nippon Ink Co., Ltd., hexamethylol melamine)
After padding a 3% by weight aqueous solution with a pickup rate of 70%, it was dried at 120 ° C for 1 minute, and then 150
Heat treatment was performed at ℃ for 3 minutes. Then, the same antifouling agent as in Example 1 was applied to obtain a product of Comparative Example 3.

The following evaluations were performed on the obtained products.

The texture was judged by the touch of 10 professional inspectors. The judgment criteria are as follows. ◎: Very good ○: Good △: Slightly poor (hard or insufficient hardness) ×: Bad

Durability of hard finish is JIS L-0217
The texture after washing 5 times with the 103 method and the texture before washing were judged by the touch of 10 expert inspectors. The judgment criteria are as follows. ◎: Almost unchanged from the feeling before washing ○: Slightly softer than the feeling before washing Δ: Softer than the feeling before washing ×: Almost no feeling before washing

For antifouling property, soy sauce and sauce are dropped onto the product,
The residual state after washing with the IS L-0217 103 method was visually judged by 10 expert inspectors. The judgment criteria are as follows. ◎: Almost no stain remains ○: Almost no stain remains △: Stain remains ×: Stain hardly stains

The results of these evaluations are shown in Table 1.

[0022]

[Table 1]

As is clear from Table 1, the products obtained in the examples have a hard finish having wash durability and antifouling properties. Further, when water was dropped onto the products obtained in the examples, it was found that water immediately penetrated and also had water absorbability.

As described above in detail, according to the present invention, both the hard finish having washing durability and the antifouling performance can be achieved at a high level, which cannot be obtained by the conventional method. In view of this, the effect of the present invention is remarkable. Therefore, the product obtained by the method of the present invention is very useful for shirts and casual uses.

Claims (1)

[Claims] 1. A cellulosic fiber structure is immersed in a sulfuric acid solution at 5 to 20 ° C. and 45 to 80 ° Be for 1 to 10 seconds, washed with water and dried, and then an antifouling agent is applied. A method of hard-finishing and antifouling a cellulosic fiber structure.