JPS6088168A - Wet treatment of fabric material - 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] The present invention relates to a method for wet processing, in particular dyeing or bleaching, of woven or mesh materials consisting of fibers capable of being cold dyed. The present invention relates to a wet processing method, such as removing water from the material after applying it, passing a processing solution through the material in an application step, and resting the material in the form of a roll. [Prior Art] Conventionally, the dyeing of textile materials using the cold resting method was carried out as follows: after a wet treatment (such as bleaching or washing) the material was first removed from the water and then dried. did. The dried material was then dyed in a Tourard dyeing machine, rolled into rolls and then allowed to rest in the cold.

[Problem that the invention seeks to solve]

Conventionally, this known method involves significant plant expense and energy consumption, as it requires intermediate drying between the water removal and application steps. On the other hand, in this well-known method, intermediate drying is omitted and the common process is "wet-medium-wet" (1net -
1n-evet) work is impossible. This is because if wet material is introduced into the Tourard dye application process, there is a risk that these solutions will mix and the dye solution will gradually dilute.

A further disadvantage of this known method is the risk of overdrying the material between the water removal step and the application step.

If fibers, especially cotton, are dried hot, and especially if the moisture content fluctuates, overdrying of the material can easily occur, resulting in local wetting in the next common process and thus uneven material production. Become.

Therefore, one object of the present invention is to produce a method as described above that eliminates the need for intermediate drying between the water removal step and the application step, and in addition improves the uniformity of material treatment during the application step. be.

[Means for solving problems]

The purpose of this is to feed the material with the moisture reached during water removal to the application step; to carry out an additional application of the solution to the damp material in the application step; to select the amount of solution to be added in the application step by the roll. This was achieved by selecting a solution that would still hold the solution under the winding tension.

In the tests on which the present invention is based, surprisingly,
The ``humidity'' that existed among experts in this technology in the past
A bias against "medium-M dyeing" is that if the dyeing (or any other application) is not carried out in the conventional manner by a Tourard dyeing machine, but in the purely additive form of the solution,
It turned out that it had not been discovered. Such additional application of the solution can be carried out, in particular, by pouring, spraying or adding it in the form of a foam onto the material.

The material is sent to the application step retaining the moisture achieved during water removal without intermediate drying. The purely additive application of the solution in the application step eliminates the risk of mixing or diluting the solution. This is because moisture in the material cannot enter into the application solution outside the material.

Surprisingly, this "Tangzhong 11ii" application results in a considerable improvement in the quality of the application. The moisture still contained in the material after water removal ensures that the front of the material is uniformly wetted with the application solution. As a result, the material absorbs, for example, applied application solutions completely uniformly, resulting in, for example, in the case of dyeing, an excellent uniformity of the dyeing of the material.

In the method according to the invention, the amount of solution added to the material in the application step is such that the subsequently formed roll can still retain the solution at the selected winding tension during the cold rest step. shall be.

Advantageously, at least one-third, preferably from 40 to 70%, of the total volume of solution is applied in the application step,
The remainder of the solution is formed by the water still contained in the solution after water removal.

In the method according to the invention, the water may be removed in particular by squeezing or suctioning.

An embodiment of the means for carrying out the method according to the invention is schematically shown in the drawing.

The untreated material placed on the roll (1) first undergoes a wet treatment (such as bleaching, washing, boiling) in step (2) and is then placed in a wet state in the form of a compost (3). .

This compost (3) is then sent to a water removal step (4). In the illustrated embodiment, this is a pair of squeeze rollers.

The material from which the water has been removed is then sent to an application step (5), in which a dye solution, for example, is applied to the material as a thin film from a guide plate (5a). The material dyed in this way is then rolled (
6) It is rolled up and then rested in a cold state for several hours.

〔Example〕

The invention will be explained in more detail by the following examples.

1. ii It 150 g/rd polyester/cotton single chassis is first processed in an HT beam dyeing machine to dye the polyester.

After reduction washing, the material is washed with water in a T-beam dyeing machine and then sent to a device for dyeing the cotton sections. The material is poured with an 80% dye solution.This dye solution is mixed with 10 g/j! of the reactive dye RimazolBlau 3R (Ren+azolBlau 3R (Hoechst)).
hst)) plus the required amount of tenside and alkali. The speed of the material is 30 m/min.

The material is then rolled under such tension that most of the solution escapes.

After a rest period of at least 6 hours, the material is rewound and washed with water.

2. Coarse fabric made from cotton (300 g/rd) is coated with enzymatic desizing medium in a separate plant. The material is stored in a carriage, allowed to rest, and then washed. This wet material is then fed at 15 m/ll1in to a plant operating according to the method according to the invention in which a water removal of up to 130% is achieved in a squeezing device and a 150% bleaching solution is poured into the plant. Spray inside the device. This solution is 30n+I! /β11202
and contains the necessary alkali and a large amount of tenside.

The material is then rolled into rolls and rested for 12 hours.

3. A mesh material made of cotton (200 g/td) is bleached, washed with water, and then squeezed to 100% moisture in a water removal zone. Then add to it a 70% dye solution (20 g/j! Lavafix Gold Gelbut G, Bayer) (Lav
ax Goldgelb EG, Bayer) with the required amount of alkali and tenside. The material is rolled into rolls and allowed to rest for 12 hours.

[Brief explanation of drawings]

The figure is a route map of the equipment for carrying out the method of the present invention, in which (1) is a roll, (2) is a wet treatment process, (3) is a pile, (4) is a squeezing roller, (5) is an application process, ( 5a) is the information board, (
6) is a roll.

Claims (1)

[Claims] 1. A method for wet processing, in particular a dyeing or bleaching method, of textile materials, especially woven or mesh materials, consisting of cold-dyeable fibers, which method comprises removing water from the material after the wet treatment. ;
A treatment solution is passed to the material in an application step; the material is then sent to the application step with the degree of moisture reached during the water removal step, such as by resting the material in a roll; the addition of the solution to the material is carried out in the application step; the amount of the solution applied to the material in the application step is selected such that the roll still retains the solution at the selected winding tension; A method for wet treatment of textile materials, characterized by: 2. A method for the wet treatment of textile materials according to claim 1, characterized in that the additional application of the solution is carried out by pouring, spraying or applying foam. 3. A method for wet treatment of textile materials according to claim 1, characterized in that at least one third of the total amount of the solution, preferably 70% of the total amount of the solution, is applied in the application step. wet processing method. 4. A method for wet treatment of textile materials according to claim 1, characterized in that the water is removed by squeezing and/or suction.