JPH0913283A - Printing of fabric - Google Patents

Abstract

PURPOSE: To obtain printed fabric by providing fabric comprising a polar group- containing fiber with a latent alkali, printing the fabric by ink jetting with a reactive dye-containing ink, then treating the fabric with steam or dry heat. CONSTITUTION: Fabric, for example, woven fabric of cotton, comprising yarn such as cotton, rayon, wool, silk, etc., containing a polar group to be reacted with a reactive dye, is padded with an aqueous treating solution composed of a latent alkali such as sodium trichloroacetate and a modified polyethylene, pressed and dried to provide the woven fabric of cotton with the latent alkali. Then the woven fabric of cotton is printed in a fixed pattern by ink-jet printing method using a reactive dye-containing ink and treated with steam or dry heat. The latent alkali is converted into an alkali, the dye is fixed to the fabric, washed and dried to give the objective printed fabric.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for printing a fabric by an ink jet system, and more specifically, a fabric containing a fiber having a polar group is colored by an ink jet system with a reactive dye. The present invention relates to a printing method capable of printing with excellent stability.

[0002]

2. Description of the Related Art Conventionally, as a method for printing a pattern on a cloth, a screen printing method, a roller printing method, a rotary screen printing method, a transfer printing method, etc. have been used. It is necessary to prepare engraving rollers, transfer paper, etc., and since the production of these screen frames, engraving rollers, transfer paper is quite expensive, not only is it economically incompatible unless a large lot is produced, It has the drawback of not being able to quickly respond to the diversification of fashion.

In order to solve these drawbacks, a sample is read by a scanner, and image processing is performed by a computer.
A technique for printing the results by an inkjet method has been developed, but since these were limited to paper to be printed, it was not necessary to fix the dye, but when applied to a cloth, the dye was not applied. It is necessary to fix it, and when printing is carried out using a reactive dye, pretreatment with an alkali such as sodium carbonate, sodium bicarbonate or calcium carbonate has been carried out.

[0004]

However, when pretreated with sodium carbonate, sodium bicarbonate, calcium carbonate, etc., the alkali is decomposed due to aging, and the pretreated fabric is printed after being stored for a long time. In such a case, there is a problem in that the color developability is remarkably deteriorated and the quality is deteriorated.

The present inventors have conducted extensive studies on a printing method by an ink jet method using a reactive dye of cloth, and as a result, have found a new printing method in which the problems of the existing method are solved and the present invention has been completed. It is a thing.

An object of the present invention is to provide a printing method capable of performing printing with excellent color stability when printing with a reactive dye by an ink jet method.

[0007]

The above-mentioned object is to impart a latent alkali to a fabric containing a fiber having a polar group, and subsequently print with an ink jet method using an ink containing a reactive dye, and then print. This is achieved by a textile printing method characterized by fixing a dye.

Hereinafter, the present invention will be described in detail.

Examples of the fiber having a polar group used in the present invention include cellulosic fibers such as cotton and rayon, and fibers having a polar group which reacts with a reactive dye such as wool and silk. Examples of the cloth include woven fabrics, knitted fabrics, and non-woven fabrics made of fibers having such polar groups.

The latent alkali used in the present invention is an alkali substance upon steaming or dry heat treatment, such as sodium trichloroacetate, specifically Hoec.
Examples include Remazol Salt FD manufactured by hst. Such latent alkali is applied to the cloth by pad dry, spray dry, coating dry method or the like. The latent alkali is used in an amount of 0.1 to 10% by weight based on the weight of the cloth. If it is less than 0.1% by weight, the fixing property of the reactive dye is inferior, and if it is 10% by weight or more, it is not economical for its effect.

Then, a dye ink is applied to the cloth thus treated by an ink jet method.

As the ink jet method used in the present invention, a heating resistance element is embedded in a nozzle, the ink is boiled by its heat generation, and the ink is ejected by the pressure of the bubble, and an electric signal is applied to the piezoelectric element to deform it. A pulse jet method in which volume changes in the ink chamber are excited to eject ink particles, and ink is continuously jetted under pressure from a nozzle that is vibrating ultrasonically to form particles, and the particles are controlled to a charged amount and deflected through a constant electric field. , A recording control method and a non-recording particle recording method separately.

The reactive dyes used in the present invention include vinyl sulfone-based dyes, specifically Reemazole from Hoechst, Diamira from Mitsubishi Chemical, Sumix fix from Sumitomo Chemical, and monochlorotriazine-based dyes. IC
Examples include Procion H manufactured by I Company, Cibacron manufactured by CIBA-GEIGY, and Kayashion manufactured by Nippon Kayaku Co., Ltd.

In the present invention, as a medium in which the reactive dye is dissolved or dispersed, a medium used in conventional general printing and a medium used in a conventional ink jet system can be used, and water or a mixture of water and an organic solvent can be used. However, it is common to use water. And various dispersants, surfactants, viscosity modifiers, surface tension modifiers for dyes,
A pH adjusting agent, an electric conductivity adjusting agent and the like are added as necessary to form an ink.

The cloth subjected to such printing is then
After drying at 0 ° C., steaming or dry heat treatment is performed to generate an alkali from a latent alkali, fix the dye, wash and dry.

[0016]

Next, the present invention will be described in detail with reference to examples.

Example 1 In this example, as a fabric, a warp density of 50 single yarn and a weft yarn of 50 single yarn are 130 warps / inch and weft density 70.
A book / inch cotton flat fabric was used which had been burnt, desizing, scouring, and bleaching in the usual manner. Remazol Salt FD (Hoechst
(Trichloroacetic acid sodium) 40 g / l, Finetex PEN as modified polyethylene emulsion
A treatment liquid (manufactured by Dainippon Ink and Chemicals, Inc.) of which the amount was 50 g / l and the balance thereof was adjusted with water was padded, immediately squeezed with a mangle at a pickup rate of 70%, and dried at 100 ° C. for 2 minutes.

Immediately after the fabric thus pretreated,
C. I. Reactive Yellow 2 20
Ink, 5 parts of urea (hydrotrope agent) and 75 parts of water, C.I. I. Reactive Red 24
An ink containing 20 parts, 5 parts of urea and 75 parts of water, C.I.
I. An ink composed of 20 parts of Reactive Blue 49, 5 parts of urea and 75 parts of water, C.I. I. React
4 kinds of ink consisting of 20 parts of ive Black 1, 5 parts of urea, and 75 parts of water are mounted on a pulse jet type ink jet printer, continuous printing of 8 dots / mm is performed, and then dried at 120 ° C. for 2 minutes, After heat treatment for 20 minutes at saturated steam at 102 ° C., washing and drying were performed to obtain the product of Example 1.

Example 2 The product of Example 2 was obtained by carrying out the same treatment as in Example 1 except that the plain woven fabric which had been pretreated in Example 1 was allowed to stand for 7 days and then printed by an inkjet method.

Example 3 A product of Example 3 was obtained by carrying out the same treatment as in Example 1 except that the pretreated plain fabric was left for 14 days and then printed by an ink jet method.

Comparative Example 1 In Example 1, the Remazol Salt FD was used.
A product of Comparative Example 1 was obtained by performing the same treatment as in Example 1 except that sodium bicarbonate of 20 g / l was used instead of 40 g / l.

Comparative Example 2 The product of Comparative Example 2 was obtained by carrying out the same processing as in Comparative Example 1 except that the pretreated fabric was allowed to stand for 7 days and then printed by an inkjet method.

Color measurements of the products obtained in Examples 1 to 3 and Comparative Examples 1 and 2 were carried out using a Macbeth colorimeter. Table 1 shows the results
Shown in

[0024]

[Table 1]

As is apparent from Table 1, the products obtained in the examples are superior in color stability as compared with the comparative examples.

[0026]

According to the method of the present invention described in detail above, since a cloth having excellent coloration stability can be obtained, it is industrially possible to print the cloth by an ink jet method, and it is possible to quickly respond to the diversification of fashion, which is very useful. Is.

Claims (1)

[Claims] 1. A cloth containing a fiber having a polar group is imparted with a latent alkali, and thereafter, an ink containing a reactive dye is used for printing by an inkjet method, and then the dye is fixed. A method for printing a fabric.