JPH06146178A - Method for printing fabric - Google Patents

Abstract

PURPOSE:To provide a method for printing a fabric, by which a printed product having excellent brightness and printing grade is obtained according to an ink jet method. CONSTITUTION:A fabric is dyed with a dye ink according to an ink jet method to form a desired printed pattern. In this method, a treating liquid containing at least one selected from carboxymethyl cellulose and sodium alginate, at least one selected from water-soluble acrylic resins and maleic acid-based resins and at least one selected from water repellents and softening water repellents is preapplied to a fabric, which is then printed with the dye ink according to the ink jet method. Thereby, the dye is fixed to the 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 cloth by an ink jet method.

[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 are limited to paper to be printed, there is a problem that bleeding is markedly inferior in sharpness when applied to a fabric, which is a problem. Was desired.

There is known a method of increasing the viscosity of the dye ink for the purpose of preventing the bleeding, but if the viscosity of the dye ink is increased, the nozzle clogging of the ink jet will occur.

In order to solve these problems, Japanese Patent Laid-Open No. 63-63
Although a method of preventing bleeding by pretreatment with a water-soluble polymer such as starch or carboxymethylcellulose is proposed in Japanese Patent Publication No. -85188, it has a drawback that a sufficient bleeding preventing effect has not been obtained yet. .

Further, Japanese Patent Application No. 2-298399 discloses a method for preventing bleeding by pretreatment with one kind selected from a water repellent and a soft water repellent and a hydrotrope, and Japanese Patent Application No. No. 337720 discloses a method of preventing bleeding by pretreatment with a soft water repellent and a super absorbent polymer, and Japanese Patent Publication No. 63-31593 discloses a method of using a cloth having a water repellency of 50 or more. Methods have been proposed to prevent this, and although bleeding can be prevented by these methods,
In the obtained product, ink dots are visible and it looks like a print,
Further, due to its water repellency, there is a problem that a large amount of finishing agent is required at the time of finishing processing after printing.

[0007]

DISCLOSURE OF THE INVENTION The present inventors, as a result of continuing diligent research on a textile printing method using an ink jet method, found a new printing method which solved the problems of the existing methods and solved the present invention. It has been completed.

An object of the present invention is to provide a textile printing method capable of obtaining a printed article by an ink jet system having excellent sharpness and printing quality.

[0009]

Means for Solving the Problems The above-mentioned object is a method for forming a desired printed pattern by dyeing a dye ink on a cloth by an ink jet method, and at least one selected from carboxymethylcellulose and sodium alginate is preliminarily selected on the cloth. And a treatment liquid containing at least one selected from a water-soluble acrylic resin and a maleic acid-based resin and at least one selected from a water repellent and a soft water repellent, and then using a dye ink. This is achieved by a method for printing a fabric, which comprises printing with an inkjet method and then fixing a dye.

The present invention will be described in detail below.

The cloth used in the present invention is a natural fiber such as cotton, rayon, hemp, silk or wool, a semi-synthetic fiber such as acetate or triacetate, a synthetic fiber such as polyester, nylon or acrylic, and a mixed or mixed fabric of various fibers. And so on. Examples of the cloth include woven, knitted, and non-woven fabrics.

In carrying out the present invention, first, at least one selected from carboxymethyl cellulose and sodium alginate, at least one selected from water-soluble acrylic resins and maleic acid resins, a water repellent and a soft water repellent. A treatment liquid containing at least one selected from the above is applied. Examples of methods for applying the treatment liquid include a padding method, a spray method, and a coating method.

In the present invention, carboxymethyl cellulose and sodium alginate include modified ones. The amounts of such carboxymethyl cellulose and sodium alginate used are not particularly limited, but it is preferable that they are used so that they are attached at a ratio of about 0.2 to 0.8% by dry weight to the cloth.

In the present invention, the water-soluble acrylic resin and maleic acid resin include copolymerized and modified resins. The amounts of the water-soluble acrylic resin and the maleic acid resin used are not particularly limited, but it is preferable that the water-soluble acrylic resin and the maleic acid resin are used so as to adhere to the cloth at a ratio of about 0.5 to 5% by dry weight. It should be noted that an emulsion type acrylic resin cannot be used because the resulting product has a hard texture because it does not fall off in a subsequent step.

In the present invention, the water repellent is not particularly limited, and any general water repellent such as a fluorine compound, a silicon compound and a zirconium compound can be used. Examples of the soft water repellent include octadecyl ethylene urea, zirconium acetate, polyolefin compounds, wax compounds, silicone compounds and the like. The amounts of the water repellent and the soft water repellent are preferably used so as to be attached to the cloth in a dry weight ratio of about 0.1 to 10%. That is, when used in a large amount, the product obtained becomes too water-repellent to give a print-like product, and a large amount of finishing agent is required during the subsequent finishing processing.

Then, a dye 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 the heat generation, and the ink is ejected by the pressure of the bubble, and an electric signal is applied to a piezoelectric element. Pulse jet method that deforms and excites volume change of ink chamber to fly ink particles, ink is continuously jetted under pressure from nozzles that are vibrating ultrasonically to make particles, and the particles are controlled to charge amount Deflection through a constant electric field A charge control method in which recording is performed separately for recording and non-recording particles can be used.

The dye used in the present invention may be a direct dye, a reactive dye, a reactive dye, depending on the material of the fiber structure constituting the cloth.
Acid dyes, cationic dyes, disperse dyes and the like can be used. For example, there are direct dyes, acid dyes and reactive dyes for silk fibers, direct dyes and reactive dyes for cotton fibers, disperse dyes for polyester fibers, and acid dyes and reactive dyes for nylon fibers.

In the present invention, as a medium in which the above dye is dissolved or dispersed, a medium used in conventional general printing or 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. Further, various kinds of dispersants, surfactants, viscosity modifiers, surface tension modifiers, pH modifiers, conductivity modifiers, etc. are added to the dye ink as needed.

The fabric subjected to such printing is then
It is dried at 0 ° C., then the dye is fixed by a method depending on the dye, washed and dried.

[0021]

A dye that is attached in a dot shape during printing by adhering at least one selected from carboxymethyl cellulose and sodium alginate and at least one selected from a water-soluble acrylic resin and a maleic acid resin on the surface of the fabric. The ink can be instantaneously held on the surface of the fabric, while at least one selected from a water repellent and a soft water repellent is attached to the surface of the fabric to prevent the ink from being held as described above. As a result, there is no bleeding or color mixing of the dye, and the dye is reliably dyed in the form of fine dots.

[0022]

EXAMPLES The present invention will be described in detail with reference to Examples. Example 1 In this example, the fabric has a warp density of 50 single yarn, a weft yarn of 50 single yarn, warp density 136 / inch, weft density 72.
Book / inchon cotton woven fabric is burnt, desizing, scouring, bleaching,
The mercerized product was used.

5 g / l of fine gum HES (carboxymethyl cellulose manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) was added to the plain fabric.
FD Thickner 100 (water-soluble acrylic resin manufactured by Furukawa Chemical Co., Ltd., solid content 28%) 30 g / l, Scotchguard FC-214 (fluorine water repellent manufactured by Sumitomo 3M, solid content 15%) 0 0.5 g / l, sodium carbonate (reactive adhesive) 30 g / l, urea (hydrotrope)
After treating the treatment liquid with 50 g / l and the balance with water, padding treatment and squeezing with a mangle to 80%, 120
C., dried for 2 minutes.

The woven fabric pretreated in this manner was treated with C.I.
I. Reactive Red 49 (Reactive Dye) 15
Ink of 0 g / l, 50 g / l of urea (hydrotrope agent) and the balance of water was mounted on a pulse jet type ink jet printer, continuous printing was performed at 8 dots / mm, and then dried at 120 ° C for 2 minutes. Then, the product was steam-heated at 102 ° C. for 10 minutes in saturated steam, washed and dried to obtain the product of Example 1.

Example 2 In Example 1, instead of the FD Thickner 100, Sancomatech N-30 (manufactured by Sanko Shoji Co., Ltd.,
A product of Example 2 was obtained by performing the same treatment as in Example 1 except that a maleic acid resin and a solid content of 30%) were used.

Comparative Example 1 A product of Comparative Example 1 was obtained by performing the same treatment as in Example 1 except that Scotchguard FC-214 was not used.

Comparative Example 2 A product of Comparative Example 2 was obtained by performing the same processing as in Example 1 except that the FD Thickner 100 was not used.

Comparative Example 3 A product of Comparative Example 3 was obtained by performing the same treatment as in Example 1 except that fine gum HES was not used.

Comparative Example 4 Same as Example 1 except that Vicron 90 (manufactured by Yushisha Kogyo Co., Ltd., cationic softening agent, solid content 35%) was used in place of Scotchguard FC-214 in Example 1. Then, the product of Comparative Example 4 was obtained.

Comparative Example 5 The same treatment as in Example 1 was carried out except that Evaphanol N-20 (manufactured by NICCA, urethane resin, solid content 20%) was used in place of the FD Thickner 100 in Example 1. A product of Comparative Example 5 was obtained.

Comparative Example 6 Instead of fine gum HES in Example 1, sorbitose C-5 (Avebe, etherified starch)
The same treatment as in Example 1 was carried out except that was used to obtain a product of Comparative Example 6.

Next, the bleeding and print quality of the products obtained in Examples 1 and 2 and Comparative Examples 1 to 6 were evaluated in three grades (◯, Δ, ×). The results are shown in Table 1.

[0033]

[Table 1]

As is clear from Table 1, the products obtained in Examples 1 and 2 were free from bleeding and sharp on the edge of the pattern, and not a print-like product but a very good quality printing fabric. In addition, the texture was good, and the water repellency was 50 points or less, and no problems occurred during post-processing.

[0035]

According to the present invention, the dye ink which is dyed in a dot shape for printing on a specific pre-treated fabric by an ink jet method is instantaneously held on the fabric at the time of printing and prevents bleeding. It is possible to obtain a high-quality textile printing fabric having a sharp pattern. Further, the present invention is capable of uniform printing of ultrafine wires, is very efficient, and enables high-quality printing in all fields, and is a practical tool that can quickly respond to diversification of fashion. That's the method.

Claims (1)

[Claims] 1. A dye ink is formed by an inkjet method,
In the method of forming a desired printed pattern by dyeing on a fabric,
The cloth contains at least one selected from carboxymethyl cellulose and sodium alginate in advance, at least one selected from water-soluble acrylic resins and maleic acid resins, and at least one selected from water repellents and soft water repellents. After applying the treatment liquid, the method for printing a fabric is characterized in that printing is performed by an inkjet method using a dye ink, and then the dye is fixed.