JPS5932587B2 - Transfer printing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wet transfer printing method for cellulose fibers, and more specifically, a transfer substrate pretreated with a color development aid and a fixing agent, a water-insoluble resin, and a reactive dye. The present invention relates to a wet transfer printing method in which color development and fixation are simultaneously achieved by steaming the transfer paper printed with a printing ink containing the same.

Conventionally, a support is coated with a water-insoluble resin layer that melts and softens onto the transfer substrate by heating and pressure, and then the printed surface of the transfer paper and the coating are printed with a printing ink containing a water-insoluble resin and a dye. In the wet transfer printing method, the ink layer is transferred from the transfer paper support to the transfer substrate by overlapping the transfer substrate and heating and pressurizing it, then the dye is developed by steaming, and then the resin and dye are washed off. When the substrate to be transferred is cellulose fiber and is dyed with a reactive dye, a fixing treatment is required, and the conventional treatment method involves an ink layer consisting of an ink containing a water-insoluble resin and a reactive dye. was transferred to a cellulosic fiber woven fabric with or without pretreatment with a coloring aid, and then at 130°.
After high-pressure steaming at CX for 20 to 60 minutes to allow the reactive dye to penetrate into the woven fabric and develop the color, or complete color development by normal pressure steaming at 100 to B for 5 minutes,
As a fixing method, 3.
Methods that have been used include dipping the cloth for 0 to 50 seconds or coating the cloth with a concentrated alkaline solution and leaving it for a long time to complete the fixation.

However, the above method has various problems in the production process, such as rod wobbling, pattern weeping, left-right unevenness, bar contact, etc., and a high defect rate.Also, it requires a fixing process after steaming, which adds one more process. This causes an increase in costs.

In particular, for the cold fix method,
Productivity is low because ~20 hours of aging time is required.

The inventors of the present invention have conducted various studies to improve the above-mentioned drawbacks, and as a result, the ink contains reactive dyes, water-insoluble thermoplastic resins,
Using a transfer paper printed with non-aqueous ink that contains non-aqueous solvents and no alkaline substances and can be stored for a long time, pre-mix a swelling agent or moisture absorbent with an alkaline substance or a substance that becomes alkaline when decomposed by steam. After being transferred to a dyed fabric that has been treated in combination with one or more of the following: 1-
We have completed a new wet transfer printing method in which extremely clear and deep color development is achieved by steaming under normal pressure for 10 minutes, and fixation is also completed at the same time.

Hereinafter, the present invention will be explained in detail.

First, a mixed substance consisting of a moisture absorbent or a swelling agent and an alkaline substance or a substance that becomes alkaline when decomposed by steam treatment is applied to a fabric to be dyed which is made of reactive dye-dyeable fiber or a blend thereof.

Next, a non-aqueous resin layer that is softened and melted and transferred onto the support by heating and pressurizing the dyed fabric subjected to the above-mentioned pretreatment and a support at 120 to 210°C is coated and reacted thereon. Using an ink containing a thermoplastic dye and a water-insoluble thermoplastic resin, it is layered with a transfer paper printed with a desired pattern using a printing method such as gravure printing or screen printing, and the layered material is used as a calendar roll. For example, between the cotton rolls, the temperature is 120 to 210°C, the pressure is 5 to
The ink layer is transferred from the support to the dyed fabric by passing under heating and pressure conditions of 50 kg/d1 and a speed of 5 to 40 m/min, and then the transfer paper is peeled off from the dyed fabric.

Next, the dyed cloth to which the ink layer has been transferred is heated at 95°C at normal pressure.
The coloring and fixation of the dye are completed at the same time by steaming with steam at ~150°C, preferably 100-130°C for 30 seconds to 10 minutes, and then the pattern is transferred by soaping and drying. get.

In the above, the moisture absorbing agent or swelling agent may be any agent as long as it absorbs moisture during normal pressure steaming and has the effect of increasing the vapor density of the fibers.For example, urea, alkylene glycols such as ethylene glycol, alkylene glycol, etc. Examples include ethers, alkylene glycol esters, alkylene glycol ether esters, polyhydric alcohols such as glycerin, polyethylene glycol monoethers, polyethylene glycol, pyrrolidone carboxylates such as sodium sulfate, and sodium pyrrolidone carboxylate. .

There are no restrictions on the combination of the above-mentioned moisture absorbent or swelling agent and an alkaline substance or a substance that becomes an alkaline substance when decomposed by steaming, and any combination can be used depending on the application.

Further, there is no restriction on the amount of processing, and it is possible to select and use a preferable state.

Furthermore, it is possible to increase the processing stability by adding a water-soluble resin to the processing solution, such as cellulose ethers such as methyl cellulose, etherified starches and esterified starches such as carboxymethyl starch, and sodium alginate. , alginic acid esters, polyvinyl alcohol, various types of dextrin-IJ, and the like.

The amount of water-soluble resin added is 0.1 per 100g of cloth to be dyed.
~0.5g is preferable Furthermore, in the above, the alkaline substance or the substance that decomposes and becomes alkaline by steaming treatment is an alkaline substance that has the effect of causing the dye and fiber to react during normal pressure steaming or an alkaline substance that has the effect of causing the dye and fiber to react during steaming. Any substance may be used as long as it decomposes and supplies the alkali necessary for the reaction.For example, the former includes caustic soda, potassium caustic, sodium carbonate, potassium carbonate, sodium metasilicate, sodium silicate, sodium triphosphate, and bicarbonate. The latter includes sodium trichloroacetate and the like.

The amount of treating agent applied to the dyed fabric is 1 g to 50.9 g of the solid content of the moisture absorbing agent or swelling agent, preferably 5 to 20 g per 100 g of the dyed fabric, and the amount of the treatment agent is 1 g to 50.9 g, preferably 5 to 20 g. The amount of the alkaline substance is 1 g to 30 g, preferably 1 g to 15 g.

As for the processing method, it can be sufficiently processed by the usual method, for example, after dipping, the reduction rate is 80 to 10.
It can be processed by squeezing it at 0% and then drying it with a tenter.

According to this method, color development and fixation can be completed in a shorter time than in the conventional wet transfer printing method, and color development and stabilization are remarkable, so it is of great industrial significance.

Examples of reactive dyes that can be applied to this method include those having the following reactive groups, all of which give good results.

○Dye having a vinyl sulfone group: Remazol (manufactured by Hoechst), Diamira (manufactured by Mitsubishi Kasei), Sumifix (manufactured by Sumitomo Chemical), Revafix (manufactured by Bayer) Selmasol (manufactured by Mitsui Toatsu) ○Has a monochlorotriazine group Dyes: Procion H (manufactured by ICI), Cibacron (manufactured by Ciba Geigy) ○Dye having a monochloromethoxytriazine group: Cibacron Pronto (manufactured by Ciba Geigy), etc.○Dye having a trichloropyrimidine group: Reactone (manufactured by Kyigy)
, Trimalene Z (manufactured by Sandoz) etc. ○ Dye having a dicoure triazine group: Procion M (
(manufactured by ICI), Mikasion (manufactured by Mitsubishi-Nippon Kayaku) ○Dye having a dichloroquinoxaline group: Revafix E (manufactured by Bayer), etc. ○Dye having a dichloropyrimidine group: Reactophil (manufactured by Ciba Geigy) Next The present invention will be specifically explained with reference to Examples.

Example 1 Using a padding machine, cotton sateen was uniformly impregnated with an aqueous solution having the following composition, and then squeezed and dried at a squeezing rate of 100%.

On the other hand, what about tissue paper 309? (Paper brand: Sacchi, manufactured by Tamakoshi Paper Co., Ltd.) was coated with varnish of the following composition by the gravure coating method.
j9/- was coated, and then a pattern was printed on the coated varnished surface by gravure printing using an ink having the composition below to obtain a transfer paper.

Next, the pretreated cloth was superimposed on the transfer paper, and the superimposed product was heated at a temperature of 160°C and a pressure of 35kg/crit.
The ink layer was transferred from the transfer paper support to the cloth by passing it between a calender roll and a cotton roll at a running speed of 15 m/min% and applying heat and pressure.

The transfer paper was then peeled off from the cloth. Next, the cloth to which the ink layer had been transferred was steamed at normal pressure for 4 minutes at a temperature of 105°C to complete color development and fixation.

Next, wash with water for 5 to 10 minutes, then wash with warm water at a temperature of 70 to 808 C for 5 minutes, then wash with 2 g/l of monogen for 10 minutes, and dry to create a very highly concentrated and clear yellow-red pattern with high fastness. We were able to obtain a dyed cloth to which was transferred.

Example 2 A cotton lawn was uniformly impregnated with an aqueous solution having the following composition using a padding machine, and then squeezed and dried at a squeezing rate of 100%.

On the other hand, tissue paper 30El/lr? (Paper brand: Sacchi, manufactured by Tamakoshi Paper Co., Ltd.) was coated with 3 g/- of Showa Ink's GT primer (polyamide-based primer) using the gravure coating method, and then applied with the gravure printing method using an ink with the composition below. A pattern was printed to obtain transfer paper.

Transfer steaming and soaping operations were carried out in the same manner as in Example 1 on the pretreated fabric using the transfer paper, and a dyed fabric with a very clear and highly fastened light blue pattern transferred could be obtained. Ta.

Example 3 Brightly dyed fabrics were obtained in the same manner as in Example 1 except that the following dyes were used.

(a) Selmazole Brill Scarlet R Conc (Mitsui Toatsu Chemical Co., Ltd. product) (b) Prodione Red H3BN (ICI Co., Ltd. product)
(c) Sumifix Thread B (Suminami Chemical Co., Ltd. product) (
d) Remazol Yellow GL (Hoechst product) (e
) Revafix Blue E3R (Bayer product) (
f) Trimaren Blue R-3GL (Sandoz Co. product)
(g) IJ Acton Blue RLD (product of Geigy) (h) Cibaclone Red 4BE (product of Ciba) Comparative example Sodium carbonate alone was applied to cotton sateen in the same manner as in Example 2.
Transfer, steaming, and soaping were performed in the same manner as in Example 2 using ~10 g of padded material.

However, this product was not dyed sufficiently, and only a vague color was obtained with no density.

As described in detail above, according to the present invention, color development and fixation of the dye can be completed at the same time by atmospheric pressure steaming, which not only simplifies the processing process and shortens the processing time, but also allows the dyed fabric to contain alkaline substances. It is possible to obtain a dyed fabric with a much higher concentration and brightness and high fastness than when using the conventional method of padding only.

Claims (1)

[Claims] 1 A transfer in which a resin that melts and softens when heated and pressurized is applied onto a support, and an arbitrary pattern is printed using a water-insoluble thermoplastic resin that melts and softens when heated and pressurized, and ink containing a reactive dye and a solvent. In the wet transfer printing method, which transfers the resin dye onto the cloth by heating and pressurizing the paper and the cloth to be dyed, followed by steaming and washing, reactive dye-dyeable fibers or blends thereof are used as the cloth to be dyed. A wet transfer printing method characterized in that a mixture of a hygroscopic agent or a swelling agent and an alkaline substance or a substance that becomes alkaline when decomposed by steaming treatment is applied to the dyed fabric in advance.