JPS5887366A - Improvement of feeling of fabric - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a method for improving the feel of fabric.

More specifically, the surface of the mat forming the fabric is etched, or in other words, incinerated, using oxygen oxide lL/#c activated by low-temperature oxygen plasma. This relates to processing method C for softening the material.

A conventional method for improving the texture of fabrics, particularly softening the texture, is to attach a fabric softener to the surface of the fibers to reduce the friction between the fibers, thereby imparting softness to the fabric.

Although this method is simple and extremely effective,
On the other hand, there are problems such as a slimy feeling 6 and lI# poor washability.

Another method is to soften the texture by subjecting the fabric to weight loss treatment.

For example, scouring of silk fabric by dissolving and removing sericin, etching treatment of the fiber surface of polyester fiber fabric with a strong alkaline solution, etc. are known.

These methods are essential for obtaining the unique texture of silk fabrics, and are also extremely effective methods for obtaining silk-like fabrics for polyester fabrics. Energy costs are high due to strong alkaline hot water treatment, process management is complicated, and there are problems such as wastewater treatment.

In addition, in the above method, the fabric is made of 1 silk or polyester μ fiber each.
In the case of a fabric made only of 0T, it is possible to process the amount of fabric as #C, but for fabrics mixed with other fibers, an example is a fabric made of a mixture of polyester fiber and silk, or a fabric made of Regifu polyester fiber (i.e. A mixed fabric of polyethylene terephthalate fiber) and cationically dyeable Nolinysdel fiber (T, ie, polyester terephthalate sulfonic acid inphthalate copolymer fiber).

In the case of fabrics made of a mixture of polyester fibers and wool, it is practically impossible to improve the texture of the fabric by weight loss treatment because the fibers with weaker alkali resistance will become IcN& due to the difference in alkali resistance between the blended fibers. Ta.

The present invention was made in view of the current situation #C.

The purpose is to obtain the same effect as the hand improvement achieved by conventional weight reduction treatment by treating gas under special conditions without using water or alkali. Another object of the present invention is to improve the feel of mixed fabrics without damaging the fibers to which they are mixed.

In order to achieve this object, the present invention has the following configuration.

That is, the present invention is a method for improving the feel of a fabric, which is characterized by subjecting the fabric to a low-temperature pfusma treatment using oxygen to eliminate the surface layer of the constituent fibers of the fabric.

Below is a detailed ICC disclosure regarding the present invention.

The fabrics referred to in the present invention (2) are fibers made of organic compounds that are commonly used for clothing, such as cotton, silk, wool, linen, and semi-synthetic fibers such as rayon fibers and acetate fibers. 9 Polyester V as a synthetic fabric
Fibers, nylon fibers, polyacrylonitrile fibers, vinylon fibers, etc. are used alone or in combination.
This refers to 9m woven fabrics, non-woven fabrics, etc. in which more than one type of fabric is mixed.

In addition, mixed use here refers to using two or more different types of fibers as blended yarn or intertwisted yarn, interweaving or interweaving using two or more types of threads, and in the case of nonwoven fabrics, two or more of the above fibers. This means that more than one species is used as constituent fibers of a nonwoven fabric.

In the method of the present invention, the above-mentioned fiber fabric is subjected to low-temperature oxygen plasma treatment to eliminate the surface layer portion of the constituent fibers of the fabric.

# The gas used for the low-temperature pfusma treatment is oxygen, 100
% gas or a mixture of oxygen and other gases other than oxygen.

Other gases include i1 vote, helium, argon, envy acid,
Naturally, air can also be used as the gas used in the treatment, in which gas, -stiffened return line, water vapor, etc. can be used.

The proportion of oxygen in the gas has a large effect on the treatment of species with a high mixing ratio of oxygen. Low-temperature pufnuma of oxygen can be obtained by irradiating the above-mentioned oxygen-containing gas with high frequency waves under reduced pressure. The degree of depressurization inside the processing machine during DEFFZMA processing is such that low-temperature plasma (or unbalanced PUFZ!) is generated by high-frequency irradiation, and the processing atmosphere is as low as 7. 1) The degree of vacuum should be set so that the temperature of IIC does not damage the fabric.

Specifically, the degree of pressure reduction ranges from about 0.1 to 10 Torr. If the degree of reduced pressure is 10 TOrr or more, the generation of low-temperature guffsma will be unstable and the temperature of the processing atmosphere will rise, which may damage the fabric. The other 0.1To
Maintaining the degree of reduced pressure below rr is not desirable because it not only increases costs but also lowers the oxygen concentration and reduces the treatment effect. Therefore, the degree of pressure reduction is 0.1 to 10 Torr.
It is recommended to do this within the range of . When a stable low-temperature defusma treatment is required, it is more effective to perform it at a reduced pressure of 0.2 to 7 Torr. In addition, the frequency of the high frequency wave that generates low-temperature defusma can be used in a fairly wide range from long wavelengths to short wavelengths.
Those with frequencies in the MHz range are easy to use.

When 100% oxygen or a mixed gas containing oxygen under a reduced pressure of 0.1 to 10 Torr is irradiated with high frequency energy and high frequency energy is given to oxygen molecules, the oxygen molecules are excited and low-temperature defusma occurs, increasing the reactivity. Therefore, the fabric is subjected to low-temperature plasma treatment in this Pufumema atmosphere.
Processing time is fabric seed Jl.

Although it varies depending on the processing conditions, etc., the treatment is carried out for 5 to 60 minutes, preferably 10 to 30 minutes, to improve the hand.

It is desirable to keep the tension of the fabric as low as possible during the gufsma treatment process, and if necessary, the area where low-temperature defsma occurs may be cooled using a cooling pipe or the like. Through such treatment, the surface of the fibers constituting the fabric is etched and disappeared, that is, the fibers are reduced in weight from the surface layer, thus creating voids between the constituent fibers and improving the feel of the fabric. .

The method of the present invention will be explained below using an IC example.

The present invention is not limited to this.

Example 1 Different shrinkage mixed fiber yarn 7 of polyethylene terephthalate 11 in the warp
5 (X/'48 f v Polyethylene terephthalate sulfonic acid isophthalate copolymerization 11H1175 for weft
a/48f Tsuta Habutae Csl! F degree vertical 100 pieces/
90 pieces/inch) IC A sample that had been scoured and dyed under normal conditions was taken and subjected to low-temperature oxygen plasma treatment under the following treatment conditions 11C.

Processing conditions 1 Gas used: 100% oxygen Pressure: 0.5Torr゛ High frequency: 15,56MHz Power: 5K
W/m width processing time: 20 minutes The weight loss rate and drape coefficient of the obtained fabric were measured and the results are shown in Table 1. Measurement of drape coefficient is performed using Tl5-L
-1006C with a sample stand diameter of 12.71 m.

Table 1 As is clear from Table 1, a weight loss rate of over 15 indicates that the drape coefficient is flexible.

Also, the resulting fabric was soft and good even after scouring and dyeing under the same conditions as in Example 1.

When alkali weight loss treatment (target weight loss rate of 15%) was carried out using conventionally commonly performed high-concentration caustic soda, the strength of the polyethylene terephthalate sulfonic acid isophthalate copolymer fiber in the weft was significantly reduced, making it practically impossible to process. It was possible.

Example 2 Highly twisted polyester 75d/48f yarn (2001
For the weft, use #Sod/24f
and silk spinning 104 homote (meter te) are combined and then strongly twisted (2
000 times/l 1 l) l, weaved a fabric with a warp density of 190 fibers/inch and a weft density of 75 fibers/inch using a satin texture, and the gourd fabric was subjected to low-temperature oxygen plasma under the following treatment conditions 2. processed.

Processing conditions 2 Gas used: Air pressure: 0 jTorr High frequency: 15.56 M'Hz Power: 2.5 KW/width Processing time: 15 minutes Next, this fabric was subjected to washer relaxation treatment under normal conditions, and then dyed using a jet dyeing machine. The following finishing work was performed. As a result, it was found that the fabric treated by the method of the present invention was soft and had a good feel compared to the fabric treated in the same manner without low-temperature Pfusma treatment at a weight loss rate of g11. Furthermore, when the drape coefficient of the obtained fabric was measured (the measuring method was the same as in Example 1), it showed flexible values as shown in Table 2.

Table 2 For comparison with the method of the present invention, a fabric of the same standard as the fabric used in the nine-pronged example was separately prepared, and a fabric with caustic soda 2
When ordinary alkali weight loss treatment (target weight loss rate of 8%) was carried out at 100C for 50 minutes, the silk became brittle and subsequent processing was not possible.

Example 3 Spun yarn 6 made of polyester/L'65% cotton 35g6
Boblin using 0'/1 was prepared and subjected to desizing, scouring, bleaching, and mercerization under normal conditions. Here, this fabric was divided into two parts, and one side was subjected to plasma heat treatment under the same conditions as in Example 1 of the present invention.

On the other hand, the conventional method of alkaline reduction treatment 1101JLOH2
After steaming at 100°C for 20 minutes at 0°C, water (turning) was performed.

The flexibility of the obtained fabric was measured (the measuring method was the same as in Example 1). The results were as shown in Table 5. Even though the method of the present invention does not use water, caustic soda, etc., it was possible to obtain almost the same soft and improved texture as the conventional method.

Table 3 Patent applicant: Unitika Co., Ltd.

Claims (2)

[Claims] (1) A method for improving the feel of a fabric, which comprises subjecting the fabric to a low-temperature defusma treatment using oxygen to eliminate the surface layer of the constituent fibers of the fabric. (2) The low-temperature plasma of oxygen is an elementary low-temperature plasma generated by irradiating high frequency to an acid rate reduced to 0.1 to 10 Torr or a mixed gas of oxygen and other gases. A cloth lengthening method according to claim 1 of the patent claim.