JPS6233891A - Dyeing processing of fiber structure - 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 (Industrial Field of Application) Kikomei is a yarn consisting of polyester fibers and cotton fibers, or a tiIAL product made of these yarns.
LO) It relates to a dyeing process that improves the coloring effect.

(Prior art) Recently, mixed knitted fabrics, in which the front side is made of polyester or a polyester/cotton blend yarn and the back side is mainly made of cotton or an ester/cotton blend yarn, have been widely used for sports clothing, especially training wear and suede. ing.

The conventional dyeing and processing methods for these garments include scouring to remove impurities such as oil and wax from the fibers, and bleaching to improve the quality of the cotton. After the treatment, the polyester fiber part is dyed with a disperse dye, followed by soaping and reduction washing to remove the Table 17it stain from one fiber of the polyester, and then the cotton fiber part is dyed mainly with a reactive dye. Met.

(Problems to be Solved by the Invention) However, in the conventional method, when dyeing polynisder fibers,
There was a problem with the navy blue cotton being contaminated with disperse dyes. Especially recently, small bath ratio dyeing has been carried out, and cotton T! fiber contamination is more likely to occur. As the contamination of Azusa Qiao 1 male progresses, the disadvantages are: ■ The color tone becomes unstable, making +1 color development and color matching difficult, and ■ The color development of the cotton α group becomes unclear, making it impossible to obtain a desirable color tone. Good, now.

(First Step to Solve the Problems) As a result of various studies to solve these problems, the present invention has been arrived at. That is, the present invention involves dyeing a fiber structure made of polynisbourg pine and cotton fibers by dyeing the polyester fibers in advance and then bleaching them with an oxidizing agent to pH.
Next, 8 consisting of polynisder fiber and cotton fiber, which is characterized by dyeing cotton fiber! lli+:'t A method of dyeing and processing S objects.

Polyester U fiber and cotton hull 1 to which the present invention is applied
The fiber structure consisting of 1 is in the form of yarn and knitted fabric, and the yarn is a blended yarn of both fibers. IAm yarns or plied and twisted yarns, and knitted fabrics are fabrics made of these blended yarns, blended (single yarns and plied and twisted yarns).

Also, 1! This is a mixed-knit/mixed-woven fabric knitted with medium-sized yarns of lico, stell fiber, and cotton fiber.

The polyester fibers referred to in the present invention include regular polyester made of polyethylene prephthalate and modified polyester fibers in which inphthalic acid, 5-sodium sulfoisophthalic acid, polyalkylene glycol, etc. are combined.

The oxidizing agent used in the bleaching treatment of the present invention includes sodium chlorite, sodium chlorite, and peroxide, but hydrogen peroxide is particularly preferred.Amount of oxidizing agent (bleaching agent) used is 0.5-10% by market weight, preferably 2-5%
jrI, LE%. If less than 0.5% is used, sufficient bleaching effect and staining dye removal effect cannot be obtained;
Use of - causes bleaching of dyed products and weakening of cotton fibers. Hydrogen peroxide (35
% aqueous solution) 0.5-10cc/Q1 preferably 2-5
cc/R is used, and treatment line 11 is under normal conditions, 11110.5~1.0.5.60~90''C, 30
~120 minutes.

The polyester dyeing process used in the present invention is a dyeing process using disperse dyes, cationic dyes, and aniline dyes.

For dyeing cotton fibers, ordinary dyeing methods using direct dyes, vat dyes, etc. can be applied, but dyeing with reactive dyes is preferable in consideration of fastness tlE.

(Function) The method of the present invention treats the contamination of the cotton component, which occurs when dyeing the polyester component of a fiber product such as yarn or fabric made of polyester fiber and cotton fiber, with an oxidizing agent instead of the conventional reduction cleaning. This process oxidizes and removes surface-contaminating dyes from polyester components and 1η dyes from polyester dyes from cotton components. Through this treatment, the cotton fibers are restored to their initial state and the cotton components are dyed to a color close to the target color. Make it easier.

(Example) The present invention will now be described in detail with reference to Examples.

Example 1゜The front side is 100% polyester processed yarn (150 denier/
48 filament) and a tack reversible knitted fabric (the usage ratio of each fiber is 50 weight ffi%), the back side of which is made of cotton yarn (30'S), is refined and dispersed using the following formulation.IJ! ! After dyeing and bleaching the polyester fibers using rt, the cotton fibers are dyed using reactive dyes, washed with hot water, washed with water,
Dry.

Refinement, 1; Riester! $11 dye reduction washed cotton i! Ill staining comparative example 1 Example 1. Example 1 was prepared using the same polyester processed yarn used in Example 1. The knitted fabric was knitted into a fabric similar to the polyester part of the knitted fabric used in , and after being scoured and bleached according to the above recipe, it was dyed using the dyeing recipe for polyester fibers, washed by orphans, washed with hot water,
It was washed with water and dried to prepare a comparison sample.

Comparative Example 2 Example 1. Example 16 using the same No. 30 cotton yarn used in Example 16.
The knitted fabric was knitted into a fabric similar to the line part of the knitted fabric used in , and after bleaching it according to the above recipe, it was dyed with the dyeing recipe of Nishikiori TTL (Nishikori TTL), and was washed with hot water, water, and dried to make a comparison/rimple.

A tank reversible knitted fabric made of the same surface polyester and caustic line as used in Conventional Method Example 1 was refined according to the above recipe, dyed with: white spot, dyed with polynisdel fiber dyeing feeling 1), and then dyed with reduction method 7?
After 1, the cotton fibers were dyed, washed with hot water, and washed with water to make a sol/sol.

The a and b values of the color tones of people's dyed samples were measured using E1 Color Difference J1 manufactured by Hondenshoku Kogyo Co., Ltd.

The results are shown in Table 1.

Table 1 Example 1 according to the method of the invention. Polyester fiber $a6
Partial adhesiveness, a, and b values are as in Comparative Example 1. of polyester fiber (1
1, no? , , a, b values approximate to 1. of the cotton fiber portion. , a, b values are for the cotton fiber paste of Comparative Example 2, a,.

It shows a value close to b.

On the other hand, in the conventional method, 1 part of the polyester braided cord,
, a, b values are Comparative Example 1.0 Polyester 1
1F [.

+ a, b (approximate to p' [but L+ a, l of the cotton fiber part) ♂ (is the cotton fiber glue of comparative example λ, a,
Unlike the b value, this shows that the cotton fibers are contaminated by the dye used to dye the polyester fibers.

(Effects of the Invention) According to the method of the present invention, when dyeing a fabric made of polyester fibers and cotton fibers, the j! The staining caused by silester disperse dyes is reduced, and the color development of cotton strings is improved, making it possible to dye brightly dyed cloth.

Furthermore, the poor color reproducibility caused by contamination of the double cotton fibers can be improved, and the mismatch rate due to color tone mismatch can be reduced.

Claims (1)

[Scope of Claims] Polyester fibers and cotton fibers, which are characterized in that, in dyeing a fiber structure made of polyester fibers and cotton fibers, the polyester fibers are bleached with an oxidizing agent after dyeing, and then the cotton fibers are dyed. A method for dyeing and processing a fiber structure consisting of.