JPS5944430B2 - Crack pattern dyeing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel crack-pattern dyed fabric that can be easily obtained by treating various fabrics with a special resist dyeing composition.

Traditionally, molten wax is applied onto a fabric, left to cool to create irregular linear cracks, then a dye solution is attached to the fabric, air-dried at room temperature, wax components are removed, and the fabric is dyed. Obtaining dyed cloth with a crack pattern by heat treatment for fixation is ``
It is well known as "Roukera" dyeing, and there is also other method of obtaining this type of crack pattern, such as sizing and dyeing using a starch-based sizing agent.

The former is a dyeing method that takes advantage of the physical properties of wax, such as dye resistance, room temperature curing, and brittleness. As long as it lasts, preliminary drying after dye attachment must be done by air drying.

That is, the wax used for the wax component usually has a content of 400 to 1
Since it has a melting temperature in the range of 50° C., it is extremely difficult to dye continuously when the material to be dyed is continuous paper, film, fabric, or nonwoven fabric.

In addition, with this method, heat treatment for fixing the dye must be performed after the wax is removed from the material to be dyed, so it is impossible to carry out preliminary drying and fixing at the same time, resulting in poor workability.

Further, when removing the wax, using a solvent such as trichloroethane or volatile oil is extremely unfavorable from the viewpoint of workability and hygiene.

The latter method of sizing is a method commonly called crack dyeing, in which cracks are generated in the glue layer on the fabric by drying and dyeing is performed, but at this time water, water, It is impossible to create a crack pattern through resist dyeing without appropriate strength against other dye solvents, and for this reason only sticky pastes such as mochi powder and non-glutinous powder are used for resist dyeing. Therefore, there is a restriction that other glue layer-based glues cannot be used, and glue layer-based glues are
There is also the problem that drying at temperatures above 0°C causes discoloration and contamination of the fabric.

The present invention was made to solve the problems in crack pattern dyeing using such a wax or glue layer, and by developing a new resist dyeing composition that hardens by heating and has appropriate brittleness, continuous dyeing is possible. This method makes it possible to reliably and easily obtain crack pattern dyeing, and its characteristics are as follows: A resist dyeing composition made of a mixture of gypsum, polyacrylamide, water and/or starch is applied to the fabric surface; After drying, the applied resist dyeing composition is cracked and dyed to produce a crack pattern on the fabric.

The details will be explained below. In the present invention, a resist dyeing composition in which gypsum, polyacrylamide, and/or starch are uniformly mixed with water is used.
Printing is done on the surface of various fabrics made of synthetic fibers such as acrylonitrol, natural fibers such as cotton, silk, wool, rayon, acetate, and recycled fibers alone or in combination. Cracks are given to the entire resist dyeing composition that has been printed and dried by a method, and then dyed as desired by pad dyeing, draw dyeing, spray dyeing, etc., pre-dried, and then subjected to normal steaming and drying treatments. After fixing the dye, the resist composition can be easily removed by washing with water under normal conditions, thereby producing various dyed fabrics with crack patterns.

In this case, when starch is used in combination with the present invention, the color may change due to heat as mentioned above, so the amount added to the gypsum and polyacrylamide should be adjusted appropriately, taking into consideration the processing temperature and processing time. It is desirable to select
This point will be illustrated in the examples described below.

According to the method of the present invention, it is possible to continuously dye a crack pattern on a long continuous fabric, and in the drawings, 1 is the fabric and 2 is the dyed crack pattern. However, the crack pattern 2 obtained by the present invention can range from a fibrous crack pattern with thin lines to a coarse crack pattern with thick lines, and the pattern shape can be any size, and any irregular crack pattern can be easily obtained. It will be done.

Furthermore, the area around the crack line can be blurred if necessary, and compared to the conventional crack pattern made of wax or starch,
The appearance and taste are significantly different in that the crack line shape is very clear and has a free pattern.

The gypsum used in the present invention can be any of gypsum hemihydrate, gypsum trihydrate, and gypsum anhydrite. However, when gypsum hemihydrate is used, the gypsum absorbs water and becomes gypsum trihydrate.
After water use, changes are observed in the water content, viscosity, etc. of the resist dyeing composition.

However, since it does not change after becoming hydrated gypsum trihydrate, it may be applied after the gypsum in the resist composition has been converted to gypsum trihydrate.

In addition, the polyacrylamide used in the present invention is preferably one that forms a film on the fabric and easily falls off when washed with water, and suitably has a degree of polymerization of approximately 10' to 106. Mignon NS
(Main component polyacrylamide, degree of polymerization 105, viscosity 40
0CPS).

The dye used for dyeing can be selected as appropriate depending on the material of the fabric to be dyed, such as disperse dyes, reactive dyes, cationic dyes, acid dyes, direct dyes, etc., and there are no restrictions. When printing, it is possible to print partially or completely using rollers, screens, coatings, etc., and the thickness of the coating layer of the resist composition depends on the fabric material, the desired pattern arrangement, shape, etc. Although it varies depending on the material, the thickness of the print should be such that the resist dyeing composition layer can be seen on the surface of the fabric.
After coating, dry at 100 to 200°C for about 2 to 10 minutes, and create cracks by rubbing, etc. The temperature during heat treatment for fixing the dye is about 90° to 200°C, and then concrete implementation. Give an example.

Example 1 Plaster of Paris 350 parts Polyacrylamide (Migson N5) 350 parts Flour
120 parts water and the rest The above materials are uniformly mixed to form a resist dyeing composition, which is applied to a white cotton cloth and dried at 150°C for about 5 minutes.
Cracks were created by hand kneading, and dyeing was performed using Direct Fast Yellow R Special 5 water-receiving solution.

Next, the dye was fixed by heat treatment at 90° C., and the resist composition was removed by washing with water.

This made it possible to obtain a crack pattern on the entire surface of the fabric.

Furthermore, the same process as in Example 17, but the ingredients used,
Table 1 shows resist dyeing compositions, dyes, and types of fabrics to be dyed according to Examples 2, 3, and 4゜5 with various formulations, and similar results were obtained in all Examples. Therefore, as shown in Example 2, the present invention is applicable even when no starch is used at all.

All coefficient values for compounding amounts in the above table indicate weight coefficient values.

Further, in carrying out the present invention, it is possible to apply the method to a fabric to be dyed which has been dyed in advance by a conventional method, or it is possible to apply the resist composition to an undyed fabric and then dye it.

The present invention is as follows. Compared to conventional methods, the present invention uses special contents of the resist dyeing composition to ensure that a resist dyeing layer that is cured by heating and has appropriate brittleness is formed on the fabric surface. Free patterns of cracks can be easily obtained, and they can be continuously processed into long length fabrics, making it possible to mass-produce novel crack-patterned dyed fabrics through a continuous, integrated process, which is much easier than conventional methods. It can be obtained much more economically, and the processing method is easier than in the past, making it an excellent new means for dyeing crack patterns.

[Brief explanation of the drawing]

The drawing is an example of a dyed fabric according to the present invention. 1...Fabric material, 2...Crack pattern.

Claims (1)

[Claims] 1. A resist dyeing composition made by mixing gypsum, polyacrylamide, water and/or starch is applied to the fabric surface, and after drying,
A crack pattern dyeing method characterized in that a crack pattern is obtained on a fabric by imparting cracks to the applied resist dyeing composition and then dyeing the fabric.