JPH02112489A - Production of cloth of ink jet - Google Patents

Abstract

PURPOSE:To obtain the title cloth showing clear images free from ink blotting in printing by ink jet by dispersing or emulsifying a water-soluble polymer into a mixed solvent of a water-soluble solvent not to dissolve the water-soluble polymer and water to give a treating solution and treating a cloth with the solution. CONSTITUTION:A cloth (natural or synthetic fiber) for ink jet is treated in a treating solution prepared by dispersing or emulsifying a composition of water-soluble polymer/water/emulsifying agent/water-soluble solvent into a water-soluble solvent (e.g., alcohol) not to dissolve a water-soluble polymer such as natural sizing agent or synthetic sizing agent and water and the cloth is provided with 0.1-20wt.% water-soluble polymer. In dyeing by ink jet, blotting and diffusion are prevented by using the cloth so that clear images can be shown.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is an inkjet dyeing method for imparting an image of good quality to an inkjet dyeing method.
This relates to a method of manufacturing j-cloth.

(Prior Art) Conventionally, methods such as hand printing, roller printing, screen printing, and transfer printing have been used as methods for forming patterns on fabrics, but all of them involve screens with patterns formed in advance,
This method involves preparing an engraving roller and transfer paper.

Furthermore, in recent years, an inkjet printing method has been developed in the field of paper printing and has already been put into practical use.

Pattern formation using the inkjet method can be created without spending time and money by combining it with a pattern reader and computer, so it is also suitable for the pheasant field.
It has attracted attention and attempts are being made to apply it directly to fabrics.

In this method, prevention of bleeding is the most important issue in order to obtain delicate images on the fabric.

The present inventors also proposed the following method regarding inkjet.

(1) A method that uses special pre-processing for IFI fabric.

(2) Method using special ink.

(3) A method that uses both special pretreatment and special ink.

Regarding (1), water repellent treatment to prevent ink migration (Japanese Unexamined Patent Publication No. 60-99081), water-soluble polymer treatment to improve the water retention of fabrics (Japanese Unexamined Patent Publication No. 61-552)
Publication No. 77> etc.

Regarding (2), prevention of bleeding by ink with specific viscosity behavior (Japanese Unexamined Patent Publication No. 101669/1983).

Regarding (3), it is a method that reduces the movement of ink from both the cloth and the ink. For example, as a gelling method (
JP-A-60-81379, JP-A-61-2312
Publication No. 87), etc.

Among these, when the ink requires some kind of additive, even if the effect of preventing bleeding is great, the ejection performance of the ink is often deteriorated. That is, additives increase ink viscosity, increase stickiness, increase insoluble components, etc., resulting in a decrease in ink ejection performance and reliability.

On the other hand, pre-treatment of the fabric alone does not have sufficient bleeding prevention effect.
It has not been done. According to the inventors' investigation, ink 122
Even if a single drop of ink bleeds, it may be small, but when the ink comes into contact with other colored areas, the bleed will occur, and there is a problem that dark colors and sharp patterns cannot be printed properly. This is particularly a problem with water-soluble dyes. Therefore, at present, both the prevention of inkjet bleeding and the ink ejection performance have not been satisfied.

[Problems to be Solved by the Invention] In order to solve these problems, especially the prevention of inkjet bleeding, the present inventors conducted various investigations and found that water-soluble polymers can be dispersed or dissolved in a solvent that does not dissolve the polymers. The inventors have discovered that when a fabric is pretreated using an emulsified treatment liquid, the above-mentioned problems are not caused and the bleeding prevention effect is also increased, leading to the present invention.

An object of the present invention is to provide a method for producing 15 sheets for inkjet use for printing high-quality images that have excellent ink ejection stability, are dark in color, and are prevented from bleeding.

"Means for Solving the Problems" In order to achieve the above object, the present invention has the following configuration.

(1) For inkjet use: When obtaining a fabric, in a mixed solvent of water and a water-soluble solvent that does not dissolve the water-soluble polymer,
A method for producing an inkjet fabric, comprising treating 45 fabrics with a treatment liquid in which the water-soluble polymer is dispersed or emulsified.

(2) The inkjet inkjet device according to (1), wherein the treatment liquid has a composition of water-soluble polymer/water/emulsifier/water-soluble solvent.
Clothing manufacturing method.

(3) The method for producing an inkjet sheet according to (1) or (2), wherein 0.1 to 20% by weight of the water-soluble polymer is applied to a 45 sheet.

A detailed explanation of the present invention follows.

The concept of the present invention is essentially different from conventional bleeding prevention methods. That is, conventionally, water-soluble polymers used to prevent bleeding have been applied as a treatment liquid dissolved in water. However, when common water-soluble polymers are dissolved in water, their viscosity increases, making it difficult to apply them to fabrics in the amount necessary to prevent bleeding. That is, the application means are limited, and even if it is applied, there is a problem that the fabric is likely to be twisted, distorted, or uneven. When the inkjet ink was applied to the ink, the occurrence of similar unevenness and distortion increased, making it quite difficult to apply the inkjet ink uniformly, and the quality was never satisfactory.

Water-soluble polymers naturally dissolve in water, but according to the inventors' inquiry 1, when using a mixed medium of water and a solvent that does not dissolve water-soluble polymers but dissolves in water, it is possible to It has been found that if f1 is set, it is possible to obtain a liquid in a dispersed or emulsified state without substantially decomposing the water-soluble polymer.

The inkjet fabric treated with this mixed medium liquid has the following characteristics compared to the fabric A1 pretreated with a normal dissolution system.

(1) Since the viscosity hardly increases in a solvent, it can be easily applied to necessary hangings and fabrics.

(2) The pre-treated 'f[i-paper] has almost no distortion or unevenness, and even when ink is applied, the occurrence of distortion or unevenness is small.

(3) When the same water-soluble polymer is applied and pretreated,
The present application has a higher bleeding prevention effect.

In the present invention, the water-soluble polymer is dissolved t! If the ink is dispersed or emulsified with a water-soluble solvent, it is applied as a dispersion system, so it adheres in the form of particles, has a large surface area, and absorbs the ink quickly. As a result, when it comes into contact with water-soil medium ink, it instantly thickens and prevents bleeding.

Therefore, the present invention is applicable to all types of ink systems in water-soil medium, including inks in which water-insoluble dyes such as disperse dyes are necessarily dispersed, as well as inks containing water-soluble dyes such as reactive dyes and acid dyes. Compatible materials are synthetic fibers (polyester,
nylon, acrylic, etc.), natural plant fibers (cotton, linen, etc.)
It is a rational and versatile method that can be used for animal fibers (silk, wool, etc.). The fabric is not particularly limited, and includes woven fabrics, knitted fabrics, non-woven fabrics, and the like.

According to the investigation conducted by the present inventors, the water-soluble polymer of the present invention dispersed or emulsified with a water-soluble solvent can be used when dissolved in commonly used water and in oil-in-water type (0/W type emulsion). The bleeding prevention is better compared to the one using .

Inkjet as used in the present invention refers to ejecting liquid such as ink from a nozzle, converting the ejected liquid into droplets, and controlling the
The methods are classified into (1) continuous discharge method (deflection type, diverging type), and (2) on-demand type (pressure pulse type, bubble jet type, electrostatic discharge type). may also be used.

The water-soluble polymer referred to in the present invention includes natural sizing agents (including semi-synthetic sizing agents) and synthetic sizing agents. Natural sizing agents include starch-based sizing agents such as raw starch and solubilized starch, methyl cellulose, and hydroxymethyl cellulose. , cellulose-based products such as calhophedimethylcellulose, locust bean gum,
There are gum types such as tamarind, others, and sodium alginate.

Synthetic adhesives include vinyl-based adhesives such as polyvinyl alcohol and polyvinyl methyl ether, acrylic adhesives such as poly(meth)acrylic acid, poly(meth)acrylate, and polyacrylamide, and maleic acid copolymers such as styrene and vinyl acetate. Examples include copolymers with polyvinylpyrrolidone, polyethylene oxide, etc. These may be used alone or in combination of two or more.

In terms of fL, stabilization of dispersed particles, and uniform treatment of fabrics, the water-soluble polymer must be particularly fine particles, and
Anionic water-soluble polymers are preferably used as they do not react with dyes (do not inhibit dyeability). For example, acrylics, preferably poly(meth)acrylic acid or poly(meth)acrylates, alginic acid or algin B, and carboxydimethyl cellulose are preferably used.

The amount of water-soluble polymer added to the fabric is preferably 0.1 to 20%, and 0.5 to 10%.
% is most preferably used. If it exceeds 20%, desizing properties will be extremely poor, which is also unfavorable from an economic point of view.

Moreover, if it is less than 0.1%, the effect will be poor.

The water-soluble solvent referred to in the present invention refers to a water-soluble solvent that substantially dissolves the water-soluble polymer. Any solvent may be used as long as it is water-soluble and the solvent is water-soluble. The solvents that can be used differ depending on the type of water-soluble polymer, but examples of such solvents include, for example, 1
Hydrolic alcohols, dihydric alcohols, polyhydric alcohols, pyrrolidone, sulfolane, etc. are included. Monohydric alcohols include methyl alcohol, ethyl alcohol, propyl alcohol, butyl alcohol, ethyldiglycol, butyldiglycol, etc.; dihydric alcohols include ethylene glycol, diethylene glycol, triethylene glycol, te]-laethylene glycol, and methylene. Glycol, l-limedylene glycol, propylene glycol, dipropylene glycol, 1.3 butanediol, 1.4 butanediol, 1.3 propanediol, hexylene glycol, thiodiglycol, polyethylene glycol, etc. , trihydric alcohols include glycerin, trimethylolzulopane, etc., pyrrolidones include 2-pyrrolidone, hemedyl 2-pyrrolidone, etc.
Additionally, ethylene carbonate 1~, propylene carbonate, etc. can also be used.

Above all, it does not cause any damage to the fabric, has low odor, and
Solvents with a boiling point of 250'C or less are preferably used because they do not remain on the dye cloth after drying, such as methyl alcohol, edyl alcohol, 1,3 butanediol, 1.4
Examples include butanediol, and these may be used alone or in combination of two or more.

The surfactant referred to in the present invention is a medium for dispersing or emulsifying the water-soluble polymer in a solvent. Although there are no particular limitations on the material as long as it has such an effect, nonionic materials are preferred and include the following. These include polyoxyethylene fatty acid ester, polyquaternary diethylene alkyl ether, fatty acid ester of polyhydric alcohol, polyoxyethylene sorbitan fatty acid ester, and Plu[1nick type]. The amount of surfactant used is 0 in the processing solution.
．． It is 1 to 10%, preferably 1 to 6%.

Further, when the water-soluble polymer is a polycarboxylic acid such as polyacrylic acid, it may be partially converted into a salt form using a neutralizing agent. Examples of inorganic alkaline substances include aqueous ammonia, sodium hydroxide, potassium hydroxide, sodium carbonate, potassium FAR, disodium phosphate, sodium bicarbonate, potassium bicarbonate, and the like. On the right, examples of alkaline substances include monoethanolamine, jetanolamine, 1-liethanolamine, and propatoolamine. The amount of alkaline substance used may be based on the neutralization of carboxylic acid.

The blending ratio of each of the above components is not particularly limited, and it is sufficient to obtain a liquid in which the water-soluble polymer is stably emulsified and dispersed in the water-soluble (d) agent and in the mixed solvent of water. . Typical treatment liquids include water-soluble polymers 1 to 40% water.
5~50% alkaline substance O~40% surfactant
0.5-10% water-soluble solvent 20-9
It is 3.5%.

The fabric may be treated by any of the pad method, spray method, printing method, and coating method, but the pad method, spray method, and low-pickup coater are particularly preferably used because the viscosity of the treatment liquid is low.

The fabric pretreated by the method of the present invention is then generally subjected to an inkjet process, a coloring process, a soaping process, etc., using commonly known equipment and methods.

Hereinafter, the present invention will be specifically explained with reference to Examples.

[Example] Example 1 Sodium alginate IL-2 (
1 (manufactured by Kagaku Kogyo Co., Ltd.) was pulverized using a small jet mill to prepare a treatment liquid (1) having the following composition.

1: Treatment liquid (1) A, 1.4 butanediol (water-soluble solvent >70% B, sodium alginate It--25% (manufactured by Kimitsu Chemical Industry Co., Ltd.) C, Sorbon T-80 (Sorbon T-80)
5% (Polyoxyethylene sorbitan monooleate manufactured by Tobu Kagaku Co., Ltd.) D. Water 20% How to make: 1. Add sodium alginate IL-2 to 1.
Add 4-butanediol (water-soluble solvent) and stir.

Next, Turupon T-80 was added as a surfactant and thoroughly stirred.

Finally, water was added and thoroughly stirred to prepare a treatment liquid (1).

Using this treatment liquid (1), it was applied to cotton and tissue by the pad method (squeezing ratio: 60%) and dried to produce 1 q of pretreated fabric for inkjet use.

2: Inkjet conditions Under the inkjet conditions shown below, inkjet pre-treated fabric J3 treated with the above treatment liquid (1) and untreated Ifi were also inkjetted at the same time for comparison (Comparative Example 1: Cotton, Comparative Example 2 :silk). The composition of the ink used is shown in 3 below.

Inkjet method; on-demand type Nozzle diameter: 75 microns Applied voltage: 60V Driving frequency: 4000H2 Resolution ° 8 dots/mm 3: Ink composition (2) Reactive dye (liquid) a, Cibacron Yellow 6G Liquid (Ciba
cron Yellow 6G Liquid) (Cibac Geigy) b, Cibacron Red 6B Liquid (Cibac
ron Red 6B Liquid) (manufactured by Civer Geigy) C, Cibacron Turquoise GR Re 4 Knit (Ci
bacron urguoise GRLiqu
id) (manufactured by Civer Geigy) d, Cibacron Black BG Liquid (Cib
Acron Black BG Liquid> (manufactured by Civer-Geigy) Four types of inks having the following compositions were prepared for dyes a, b, c, and d.

Dye 30% ethylene glycol]
-L 30% Sodium trichloroacetate 5% Ion exchange water 35% Both were filtered through a 1 micron filter and degassed under reduced pressure before use.

4: Color Development - So Pink Inkjet fabric was subjected to steam color development at 100° C. for 20 minutes, then subjected to saw pink treatment at 95° C. for 10 minutes, washed with water, and dried.

After drying, bleeding was measured for the cotton and silk fabrics, and the results of bleeding prevention are shown in Table 1.

The bleed here is a measurement of the distance (mm) that ink moves between adjacent colors, and the smaller the number, the smaller the distance that ink moves (mm) and the smaller the bleed. .

Moreover, the value in parentheses is the adhesion %Owf of water-soluble polymer.

Table 1 Smudge prevention properties As shown in Table 1, the ink travel path fi (mm>) of the cotton and silk fabricated according to the present invention is significantly reduced, indicating good smear prevention. On the other hand, in all of the comparative examples, the distance traveled by the ink was extremely large, and the bleeding was severe.

Example 2 In order to confirm the relationship between water-soluble polymer (=J adhesion and bleeding prevention), carboxymedyl cellulose (CMC) was used instead of sodium alginate in Example 1, and 1.4-butanol was used instead of sodium alginate. , N steel 2 pyrrolidone was used, but in the same manner as in Example 1, a treatment solution (2) shown in Ill. 2 below was prepared.

Processing liquid (2) A
Nohe A, N-methyl 2-pyrrolidone 84 82 80 7
5B, CMC13510 C0T-805555 D, Water 10101010 Cotton was treated in the same manner as in Example 1, and inkjet 1~, color development, and soaping were performed using reactive dye ink. For bleeding, the moving distance (mm) of the ink was measured in the same manner as in Example 1.

The values in parentheses indicate CMC's 6% off@1°.The results are shown in Table 2.

As can be seen from Table 2, in the case of the CMC of the present invention (I), as the amount of CMC adhered increases, the distance traveled by the ink becomes smaller and the bleeding becomes better.

Example 3 1: Pretreatment of 11 fabrics Regarding the treatment solution (1) of Example 1 consisting of a water-soluble solvent and the conventional treatment solution (3) consisting of the following aqueous system, a polyester fabric (texture: satin) was treated. It was processed and the bleeding was compared.

Treatment liquid (3) 8 g of zutorium alginate was dissolved in 92 CI of water,
19 is a water-based high viscosity (viscosity: 30,000 cp) aqueous solution of sodium alginate (8%). In the treatment liquid (1), the water-soluble polymer does not dissolve but is in a dispersed state, and has a low viscosity (3
0 cp). Both treatment liquid (1) and treatment liquid (3) were applied by a coating method, and the applied amounts (%) are shown in Table 3.

2: Inkjet conditions same as Example 1. However, the untreated sample (Comparative Example 3) was also subjected to inkjet printing at the same time.

3: Ink composition Disperse dye a for polyester, C.I. Disperse Red 206 (CI D
isperse Red 206) b, CI Desperse Blue 56 (CI [)isperse B
lue 5B) Two types of inks having the following compositions were prepared for each of the a and b dyes.

Dye: 10% 1.4-butanediol: 30% Ion-exchanged water: 60% Each was filtered through a 1-micron filter and degassed under reduced pressure before use.

4: Color development - Soaping Color development treatment at 170'C with superheated steam (HT-3) for 7 minutes. Next, it was washed with water and dried using the usual reduction cleaning method. Example 1
The moving distance (mm>) of the ink was measured in the same manner as above, and the results are shown in Table 3.

Table 3 Comparison of bleeding at the same applied ω Moreover, it is possible to provide a bleeding prevention method that is rich in general-purpose f4.

Table 3 shows a comparison of bleed prevention using the 1-same A-1 solution.
J-cloth is significantly better in preventing bleeding than treatment liquid (3) applied in the same amount.

(Effects of the Invention) The inkjet fabric of the present invention, which can be made by 1 tsubo, has no ink bleeding or diffusion, and provides clear and sharp images.

Claims (3)

[Claims] (1) When obtaining a fabric for inkjet use, the fabric is treated with a treatment liquid in which a water-soluble polymer is dispersed or emulsified in a mixed solvent of water and a water-soluble solvent that does not dissolve the water-soluble polymer. A method for manufacturing an inkjet fabric. (2) The method for producing an inkjet fabric according to claim (1), wherein the treatment liquid has a composition of water-soluble polymer/water/emulsifier/water-soluble solvent. (3) 0.1 to 20% by weight of the water-soluble polymer based on the fabric
A method for producing an inkjet fabric according to claim (1) or (2).