JPS58156053A - Production of polyester processed yarn knitted 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 producing a cationically dyeable polyester processed yarn woven or knitted fabric having excellent bulk and high fastness.

Polyester fibers have advantages such as high fiber strength, chemical stability, dimensional stability, pleat retention properties, and wrinkle resistance. Fourthly, the false-twisted processed yarn has excellent bulkiness and stability against wet heat and dry heat, and has been used in many clothing and interior decoration fields.

In recent years, with the diversification of the clothing field, there has been a demand for value-added products made from resin processing. However, when polyester) V fiber woven and knitted fabrics dyed with disperse dyes in primary colors are processed with resin, problems occur frequently due to a decrease in color fastness, especially in sports training wear. The combination of dark and light colors with a fashionable design has become the mainstream, and in order to prevent melting caused by sliding or falling in gymnasiums, etc., resin processing with silicone-based smoothing agents is carried out. Color fastness decreases &! Problems such as hot water contamination due to ironing during molding, hot water contamination due to washing after dye transfer 1 wear during product storage, etc. are occurring frequently. Therefore, as a measure against color fastness, instead of the usual disperse dye dyeable polyester fiber (hereinafter referred to as 1'', Pl'l'), we used ordinary cationic dye ijJ dyed polyester fiber (hereinafter referred to as C).
It's called DP. ) and dyeing with a turn-on dye that has good color fastness.1 However, ordinary CDP has inferior fiber properties (melting point, strength, etc.) compared to polyester fibers, so Twisting temperature 20-30% higher than PET
It must be processed at a lower temperature, so the texture is P.
Compared to gT, the knitted fabric loses the volume and has no waist. Furthermore, if processed at the same false twisting temperature as PET, the strength will decrease and the texture will become harder.

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

The object of the present invention is to obtain a high-fastness polyester bulk-processed yarn woven or knitted fabric that has a sense of volume and firmness comparable to that of PET.

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

That is, the present invention produces a cationic dye-dyable polyester long fiber yarn copolymerized with a sulfoisophthalic acid component in a range of 0.8 mol to 1.8 mol, and then heats it with a false twist heater at a temperature of 200 to 220 mol. This is a method for producing a woven or knitted fabric of polyester processed yarn, which is characterized in that the fabric is false-twisted at a temperature of 0.degree.

The present invention will be explained in detail below.

The present invention uses 0.8 mol% of sodium sulfoisophthalic acid (hereinafter referred to as SIP) in a range that takes into account fiber properties.
The polyester fibers copolymerized at 1.8 mol% or less are false-twisted at the same false-twisting temperature as ordinary polyester fibers, and the yarn is used to make a woven or knitted fabric using a cationic dye with good color fastness. By dyeing, the above-mentioned drawbacks can be solved and a processed polyester yarn woven or knitted fabric having high fastness and good texture can be obtained.

The first feature of the present invention is that the SIP content is 0.8 mol% or more and 1.8 mol% or more.
The point is that a cationic dye-dyable polyester A/fiber (CDP') copolymerized in a range of mol % or less is produced and used.

The manufacturing method of CDP is known from several patents and documents, and although it is not particularly limited, generally commercially available CDP is polyester fiber copolymerized with 2.0 to 3.0 mol% of SIP component. It is dyed at a dyeing temperature of 120°C or less.

The reason why the SIP addition number is limited to 0.8 mol% or more and 1.87 mol% or less in the present invention is as follows.

If it is less than 0.8 mol %, the dyeability becomes extremely poor and a sufficiently vivid color cannot be obtained by the cationic dye. Moreover, if it exceeds 1.8 mol %, the physical properties such as a decrease in the strength of the fibers will occur at the false twisting temperature and dyeing temperature described later. That is, the range in which deep dyeing with cationic dyes is possible and the decrease in fiber physical properties is relatively small is 0.8 mol% or more and 1.8 mol% or less.

In the present invention, the above-mentioned fibers are subjected to false twisting at a temperature of 200 to 220°C. The second feature of the present invention is this temporary processing temperature. The false twisting temperature for +i & regular CDP is carried out at a heater temperature of 185 to 195℃, which is 20 to 50℃ lower than that of PET, resulting in a lack of twist set and a loose texture with no volume. The cationic dyeable polyester of the present invention can be false-twisted at a temperature comparable to that of PgT.

That is, the false twisting process is performed at a heater temperature of 200 to 220°C.

When processed at the false twisting temperature of the present invention, the twist setting is good and the fabric has an excellent texture with a voluminous feel.

If the false twist is less than 200°C, the twist will be insufficiently set and the volume will be insufficient, and if it is more than 220°C, the strength will decrease due to the influence of heat and the texture will become hard. In the present invention, a woven or knitted fabric is produced using the above-mentioned false twisted yarn, and then dyed at high temperature with a cationic dye. The third feature of the present invention is that the CDP of the constituent fibers of the woven or knitted fabric is dyed at high temperature with a cationic dye. S in the present invention
IP copolymerized polyester fiber (CDP) can be dyed with Kanaon dye as well as with disperse dye. The reason for dyeing CDP with cationic dyes is (1) Cationic dyes are
Generally, the hue is clear and deep. (2) Cationic dyes have better wet and sublimation fastness than disperse dyes and less decrease in fastness during resin processing, and (3) cationic dyes cause less staining of other fibers. Also.

The reason for high temperature dyeing is that in the case of i+M ordinary CDP, it is dyed at a temperature of 120°C or less, but in the present invention, it is
Perform high temperature dyeing at 0°C or higher. In the present invention, the temperature is high, preferably the normal PET dyeing is
-140°C.

Polyester fiber weaving in the clothing field using the JT method of the present invention
This eliminates the problem of decreased color fastness of products dyed in 1lllf colors, which is a problem with products, and creates products with higher added value than ever before, which have been known to suffer from stiffness during processing. It is now possible to produce polyester knitted fabrics with ground-breaking performance in the clothing field and interior design.

The present invention will be explained below with reference to Examples, but the present invention is not limited thereto.

Example 1 Using polyester fiber 150 denier/48 filament obtained by co-marketing 1.5 mol% of SIP,
Jlj LS-6 type heater temperature 2111℃,
After performing saka-twisting under the condition of twist number 2500 T/M,
A knitted fabric having a structure of Motsukumi funoribu was knitted using an Osumi Seiko Maru #li machine (M-48 type, 30 inches, 20 gauge). This was subjected to usual scouring and presetting, and then dyed under the following dyeing conditions 1.

Staining conditions 1 Diacryl Yellow 2RL-PN
2.0% owf (cationic dye manufactured by Mitsubishi Kasei) Diacryl, Red GRL-PN
3.0%owf'Diacryl Blue R
L-PNO, 01% owf acetic acid
(48%) 0.2cc/l sodium acetate 0.29/1 bath ratio 1
: 20 Temperature x Time: After dyeing at 155°C for 45 minutes or more, temporarily apply antistatic agent Niceball F.
0.7% of L (product of Nicca Chemical Co., Ltd.) was added. The performance of the obtained knitted fabric is shown in Table 1. For comparison with the method of the present invention, two types of samples, the following Comparative Examples 1 and 2, were prepared and compared with the method of the present invention.

Comparative Example 1 Ordinary CDP fiber was heated to 1 temperature using the same model as Example 1.
False twisting was performed at 90°C and a number of 2500 T/M. Thereafter, it was knitted under the same conditions as in Example 1, and dyed under the same conditions except for the dyeing temperature of 120°C.

Comparative Example 2 Ordinary polyester fibers were false-twisted and circular knitted under the same conditions as in Example 1, and then processed by dyeing with a disperse dye to the hue of the same radius.

Example 1 obtained in this way. Comparative example 1. The samples of Comparative Example 2 were crushed and evaluated for color fastness and texture, and the results are shown in Table 1.

@1 Table Washing fastness: Tested according to JISL-0844, A-2 method.

However, the detergent is 1 part of synthetic detergent. (Kao tM) was used.

Sublimation fastness: According to JISL-0854.

Wind: Performed by sensory test by handling.

As is clear from Table 1, the product of the present invention was a sportswear material with high fastness and good texture.

Example 2 Polyester V fiber 1 containing 1.07% SIP
Example 1 using 50 denny zlz/48 fifment
False twisting was performed under the same conditions as in the case of , and a three-tier double-sided knitted fabric was created using the resulting processed yarn.

Next, the cationic dye AizenC manufactured by Hodogaya Chemical
athilon Navy Blue CD-RLH6
Dyeing was carried out under the same conditions as in Example 1 except that %owf was used, and during resin processing, the silicone smoothing agent Poron MF-3 was used.
2 (manufactured by Shin-Etsu Chemical Co., Ltd.) was applied with 5% OWF, and then heat treatment was performed using a heat setter at a temperature of 180° C. for a treatment time of 1 minute. The performance of the obtained knitted fabric is shown in Table 2. The following Comparative Example 1 for comparison with the method of the present invention
Two types of samples, Nos. 5 and 4, were prepared and compared with the method of the present invention.

Comparative Example 5 Ordinary CDP fibers were prepared and false-twisted under the same conditions as in Comparative Example 1.

For other processing, the dyeing temperature in Example 2 was changed to 1.
Processing was carried out under the same conditions as in Example 2 except that the temperature was 20°C.

Comparative Example 4 Ordinary polyester fibers were subjected to false twisting and knitted into a circular knitted fabric under the same conditions as in Example 2.

Subsequent dyeing was carried out using a disperse dye to obtain the same hue, and resin processing was carried out under the same conditions as in Example 2.

Example 2 obtained in this way. Comparative example 3. The color fastness, white line staining, and texture of the sample of Comparative Example 4 were evaluated, and the results are shown in Table 2. In addition, the evaluation of contamination of the white fin was carried out by the following method. Sportswear with dyed white fin tape attached was created, washed once in a home washing machine, and the degree of contamination of the white line was evaluated.

As is clear from Table 2, the products produced by the method of the present invention had high fastness and good texture, and were products with high added value.

Patent applicant: Unitika Co., Ltd.

Claims (1)

[Claims] (1) Total 0.8 mol% or more of sulfoisophthalic acid components1.
A cationic dye-dyeable polyester long fiber yarn copolymerized in a range of 8 mol% or less is produced, false-twisted at a temperature of 200 to 220°C using a false-twist heater, and woven using this false-twisted yarn. A method for producing a polyester processed yarn woven or knitted fabric, which comprises dyeing the knitted fabric at a high temperature with a cationic dye after weaving and knitting the fabric.