CS255923B1 - Method of local dyeing of textile materials - Google Patents

Abstract

A method of local dyeing of flat textile materials without the need for complex special equipment, which allows you to influence the saturation of the dyeing and the ratio of dyed and undyed areas, so that the dyeing can have the character of classic batik or full-fledged dyed spotted dyeing.

Description

The present invention relates to a method for dyeing textile fabrics which enables local dyeing to be achieved in non-repeatable but approximately uniformly spaced patterns.

Previously known methods of local dyeing of textile fabrics utilize the local application of dyeing solutions on a moving fabric or on a roll conveying the solution onto the fabric, as well as the application of powdered dyes to damp textile fabrics and their subsequent dissolution and fixation on the material. also described processes where local coloring occurs after removal of the dye bath from the level of the carrier liquid ·

A widely used technique for producing irregular dyeing of textile fabrics is the use of a variety of methods of leaching, obtained by ligation, stitching, application of fabrics that prevent the penetration of dye baths and subsequent dyeing. The methods described generally require complex speoial devices or, in the case of meohaniocyte reserves, are prononous and industrially unusable.

Most of the above drawbacks are overcome by the solution according to the invention, which consists in the fact that a dye solution, dispersion or emulsion is unilaterally applied to a textile fabric in the form of a rope embedded in one or vioe layers and subsequently subjected to dye fixing and uneven coloring.

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The process according to the invention makes use of the fact that one-sided application of the dye solutions or dispersion onto the sheet material deposited in the form of a cord in a layer results in partial penetration of the dye into the material. Depending on the way in which the material is deposited in the layer, the composition and finish of the material, the ability of the bath to penetrate the material and the ratio of the amount of solution, dispersion or emulsion applied to the amount of material processed. dispersion and fixation conditions such as time, temperature, pH and uryohlove staining.

The process according to the invention can be used in the coloring of oily cellulosic materials with soluble dyes or dyes which are converted into a soluble state in solution. Polyamide and polyacrylonitrile are suitable soluble and disperse dyes, disperse dyes are suitable for polyester materials.

The solution according to the invention achieves local dyeing of textile fabrics without the need for complex special equipment. Here, it is possible to easily influence the color saturation and the ratio of the colored and uncolored patches so that the batik heater can have both a classical batik heater and full-colored stained spots.

Example 1

On pretreated cotton interlock exploded barvioí bath in a winch with one side coated with a solution comprising in one lit- ⁹ herein barvioí bath:

10, - β blue dye C.I. Reactktiv Blue 4 5, - g anhydrous sodium carbonate,

20 g of urea 0.5 e of anionic surfactant

10 g of crystalline sodium sulphate This bath is applied to 0.55 l per 1 meter of knitted fabric weighing 185 e at 20 ° C.

Excess dye solution is drained, the bath is sealed and the material is left to rest at 20 ° C for 4 hours. It is then impregnated with water at 15 ° C and thoroughly rinsed in the fire, then treated in a water bath at 60 ° C, washed out in the presence of a cationic polyelectrolyte and rinsed with water at 15 ° C.

Local coloring of medium blue saturation with smooth color transitions is obtained.

Example 3 ~

Cotton shirts can be pre-treated on a multi-colored dye bath and a solution containing one liter of bath is applied unilaterally to the fabric stacked in the bath: *

15, - & brown dye <3.1. Vat Broun

3.5 8 solid sodium hydroxide 3 - 8 sodium dithionite

This bath is applied 0.15 L per 1 meter of fabric having a weight of 130 ° C at 60 ° C.

The dye solution is pre-dripped at 60 ° C for 10 minutes. · After one-sided application, the excess dye solution is not heated. After 5 minutes, a bath of water containing 15 ml of 2 ml of hydrogen peroxide is introduced into the bath at 15 DEG C. 33 the material is briefly purged and the dyeing is completed by conventional oxidation, anionic surfactant soap and water-purging.

Get local color of the batik character with sharp color transitions to white material ·

Example 3.

On a polyester fabric stacked in a rope on the steamer conveyor belt, a one-liter bath is applied on one side.

5, - 8 Red dye C.I. Dispersion Red 60,

0,05 ml glacial acetic acid,

3, - 8 naphthalenediphenyl carriers.

This bath is applied with 0.10 l per 1 r of knitted fabric weighing 115.8.

After application of the bath, the fabric is steamed for 30 minutes at 120 ° C and, after leaving the steamer, is finished in a conventional manner by washing in water, reducing purification and rinsing in water.

A local light red color is produced with predominant white, uncolored surfaces.

P A B D ML T INVOLVED 2 V

Claims (2)

P O B D ML T RESULT 2 V Method for local dyeing of textile fabrics, characterized in that a solution or disintegration of the dye and the dye is fixed on the material in the form of a strand embedded in one or more layers unilaterally and the dye is fixed on the material.