JP2607451B2 - Fabric for ink-jet printing and printing method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fabric used for ink jet printing and a printing method using the same.

[0002]

2. Description of the Related Art Conventionally, screen printing, roller printing, rotary screen printing, transfer printing, and the like have been used as a method of printing a pattern on a cloth. It is necessary to prepare engraving rollers, transfer paper, and the like, and the production of these screen frames, engraving rollers, and transfer paper is quite expensive. It has the disadvantage that it cannot respond quickly to diversification of fashion.

In order to solve these drawbacks, a sample is read by a scanner, and image processing is performed by a computer.
Techniques for printing the results by an ink jet method have been developed.However, since these prints are limited to paper, there is a problem that when applied to a cloth, bleeding is remarkably inferior in sharpness. The solution was desired.

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

In order to solve these problems, Japanese Patent Laid-Open No.
JP-A-85188 proposes a method of preventing bleeding by pre-treating with a water-soluble polymer such as starch or carboxymethylcellulose in advance, but has a drawback that a sufficient bleeding preventing effect has not yet been obtained. .

Further, Japanese Patent Application No. 2-298399 discloses a method of preventing bleeding by pretreatment with one selected from a water repellent and a soft water repellent and a hydrotrope. No. 337720 discloses a method of preventing bleeding by pre-treatment with a soft water repellent and a superabsorbent resin, and Japanese Patent Publication No. 63-31593 discloses a method of using a cloth having a water repellency of 50 points or more. There have been proposed methods for preventing bleeding, and although these methods can prevent bleeding,
The resulting product looks like ink dots and prints,
In addition, there is a problem that a large amount of a finishing agent is required at the time of finishing after printing due to its water repellency.

[0007]

SUMMARY OF THE INVENTION The present inventors have conducted intensive studies on an ink-jet printing method for fabrics, and as a result, have solved all of the problems of the existing method. The present invention has been completed by finding a printing method.

An object of the present invention is to provide a fabric capable of obtaining a printed product by an ink jet system having excellent clarity and print quality, and a printing method using the same.

[0009]

In order to achieve the above object, the present invention has the following arrangement. That is, in the first invention, at least one selected from a water repellent and a soft water repellent is unevenly attached to at least one surface layer of the fabric, and the water absorbent is a water repellent for the fabric and The gist of the present invention is an ink-jet printing fabric characterized in that at least one selected from a soft water repellent is attached to a portion to which the soft water repellent is not attached. Is attached to at least one surface layer portion of the fabric in a non-uniform manner, and then a water absorbing agent is attached to a portion of the fabric where at least one selected from the water repellent and the soft water repellent is not attached. The gist of the invention is an ink-jet printing method characterized by dyeing a dye ink by an ink-jet method on at least one kind of unevenly-adhered surface side selected from a water repellent and a soft water repellent of the fabric.

Hereinafter, the present invention will be described in detail.

The fabric used in the present invention is a natural fiber such as cotton, rayon, hemp, silk, wool, etc., a semi-synthetic fiber such as acetate and triacetate, a synthetic fiber such as polyester, nylon, acrylic and the like, and a mixed spinning and weaving of various fibers. Etc. Examples of the fabric include a woven fabric, a knitted fabric, and a non-woven fabric.

In the present invention, the water repellent is not particularly limited, and any of common water repellents such as a fluorine compound, a silicon compound and a zirconium compound can be used. Examples of the soft water repellent include octadecylethylene urea, zirconium acetate, polyolefin compounds, wax compounds, and silicone compounds. The amount of the water repellent and the soft water repellent is preferably used so as to adhere to the fabric at a ratio of about 0.1 to 10% by dry weight. That is, if used in a large amount, the resulting product has too strong water repellency to give a print tone, and there is a problem that a large amount of a finishing agent is required at the time of the subsequent finishing processing.

In the present invention, the water-absorbing agent is not particularly limited, and examples thereof include a sizing agent and water-absorbing silicon salts. Examples of the paste include starches (starch, soluble starch, water-soluble starch derivatives, etc.), water-soluble cellulose derivatives (carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose, etc.), sodium alginate, gum arabic, gums (locust bean gum, guar gum, etc.). ), Water-soluble proteins (gelatin, glue, etc.), water-soluble synthetic high molecular compounds (sodium polyacrylate, polyvinyl alcohol, polyethylene oxide, polyvinylpyrrolidone, polyacrylamide, polyethyleneimine, quaternized water-soluble cationic polymer, etc.) Is mentioned. The amount of such a water-absorbing agent is 0.
It is preferably used so as to adhere at a rate of about 1 to 3%. That is, when used in a large amount, the change in the feeling becomes too large, so that it is used in the above ratio.

One of the above-mentioned water repellents and soft water repellents is a fixing reagent, for example, an alkaline substance such as sodium carbonate or sodium hydrogen carbonate, or a hydrotropic agent, for example, urea, monomethylurea, dimethylurea, thiourea. Urea, monomethylthiourea, dimethylthiourea, formamide, dimethylformamide, dimethylacetamide and the like may be added.

What is important in the present invention is that one of the water repellent and the soft water repellent is unevenly attached to at least one surface layer of the cloth, and the water absorbing agent is a water repellent of the cloth. That is, at least one selected from the group consisting of an agent and a soft water repellent is attached to a portion where it is not attached.

In order to adhere at least one member selected from the group consisting of a water repellent and a soft water repellent to one surface layer of the fabric, the at least one member selected from the group consisting of, for example, a water repellent and a soft water repellent is contained. After the treatment liquid to be applied is applied by a padding method, a spray method or the like, it is rapidly dried from one side at, for example, 120 ° C. or more, and the treatment liquid is caused to migrate to the dry surface side, or the treatment liquid is applied by a coating method. A method or the like can be used. In order to adhere to both surface layers unevenly, for example, a treatment liquid is applied by a padding method, a spray method, or the like, and then rapidly dried from both surfaces at, for example, 130 ° C. or more, to migrate the treatment liquid to the surface layer part. A wake-up method or the like can be used.

In order to make the water-absorbing agent adhere to a portion of the fabric to which at least one selected from the group consisting of a water repellent and a soft water-repellent is not adhered, a treatment liquid containing the water-absorbing agent is applied by a padding method, a spray method, or the like. It is possible to use a method of providing the same.

Thereafter, a dye ink is applied to at least one kind of unevenly-applied surface side selected from a water repellent and a soft water repellent of the fabric by an ink jet method.

In the ink jet system used in the present invention, a heating resistor element is buried in a nozzle, the ink is boiled by the heat generated, and the ink is ejected by the pressure of the bubbles. An electric signal is applied to the piezoelectric element. A pulse jet method in which ink is deformed to excite the volume change of the ink chamber and eject ink particles, ink is continuously ejected from the nozzle that is ultrasonically vibrating under pressure and turned into particles, and the particles are controlled to the charge amount. And a charge control method for recording the data separately for recording and non-recording particles.

The dye used in the present invention may be a direct dye, a reactive dye, or a reactive dye depending on the material of the fiber structure constituting the fabric.
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 for dissolving or dispersing the above-mentioned dye, 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. Various dispersants, surfactants, viscosity adjusters, surface tension adjusters, pH adjusters, conductivity adjusters, and the like are added to the dye ink as needed.

The printed fabric is then subjected to 80 to 12
After drying at 0 ° C., the dye is fixed by a method corresponding to the dye, washed and dried.

By adhering at least one selected from the group consisting of a water repellent and a soft water repellent to the surface layer of the fabric, it is possible to prevent the ink from adhering in the form of dots at the time of printing, thereby preventing the ink from bleeding. There is no color mixing, and the dye ink is surely dyed in the form of fine dots. Further, since the water-absorbing agent is attached to the middle layer of the fabric, the dye ink easily penetrates to the middle layer of the fabric and does not have a print tone.

[0024]

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

In this embodiment, the warp 5
A cotton plain fabric having a warp density of 136 yarns / inch and a weft density of 72 yarns / inch consisting of a 0-th single yarn and a 50-th single yarn was subjected to baking, desizing, scouring, bleaching and mercerizing in a conventional manner. Was used.

Asahigard AG 480 (a fluorine-based water repellent manufactured by Asahi Glass Company, solid content 30%) was added to the plain fabric at a rate of 30 g /
l, 30 g / l of urea (hydrotrope agent), 30 g / l of sodium bicarbonate (fixing reactant) and the remainder of the treatment liquid adjusted with water are applied to one surface by a knife over coater,
It was dried at 120 ° C. for 20 minutes and baked at 150 ° C. for 3 minutes. In addition, the adhesion amount of the water repellent was 30 g / m ² .

On the plain fabric thus treated, San Silicon M-84 (a silicon-based water absorbing agent manufactured by Sanyo Chemical Co.,
0%) 50 g / l, duck algin NSPM (middle viscosity type sodium alginate manufactured by Kibunsha) 25 g / l, and the rest of the processing solution prepared with water was subjected to padding treatment, and then squeezed to 65% with a mangle. It was dried at 120 ° C. for 2 minutes.

The woven fabric pretreated in this manner has C.I.
I. Reactive Blue 15 100g /
l, urea (a hydrotroping agent) 50 g / l, and an ink prepared by adjusting the balance to water, and C.I. I. Reactive R
ed22 80 g / l, urea (hydrotrope agent) 5
0 g / l and the remainder of the ink adjusted with water were separately mounted on a pulse jet type inkjet printer,
Continuous printing of dots / mm was performed, followed by drying at 120 ° C. for 2 minutes, heat treatment at 102 ° C. for 10 minutes with saturated steam, and then washing and drying to obtain the product of Example 1.

Comparative Example 1 The same procedure as in Example 1 was carried out except that the water repellent was not coated, to obtain a product of Comparative Example 1.

Comparative Example 2 Asahigard AG480 was added to the same plain woven fabric as in Example 1.
30 g / l, urea 30 g / l, sodium bicarbonate 30 g
The processing solution prepared by adjusting the water content of / l and the remainder with water was subjected to padding processing, squeezed with a mangle to a squeezing ratio of 65%, dried at 120 ° C for 2 minutes, and baked at 150 ° C for 3 minutes.

On the plain fabric thus pretreated, the same ink jet printing as in Example 1 was performed, and Comparative Example 2 was performed.
Got the product.

Table 1 shows the bleeding, penetration and coloring of the products obtained in Example 1 and Comparative Examples 1 and 2.

The bleeding was judged by visual observation by 10 specialist inspectors. The criteria are as follows. ◎: No bleeding ○: Slight bleeding △: Slight bleeding ×: Large bleeding

The permeability was determined by visual inspection of 10 professional inspectors. The criteria are as follows. ◎: very good permeability ○: good permeability △: slightly poor permeability ×: poor permeability

The color development was judged by visual observation by 10 specialist inspectors. The criteria are as follows. ◎: very good coloring property ○: good coloring property △: slightly poor coloring property ×: poor coloring property

[0036]

[Table 1]

As is evident from Table 1, the products obtained in the examples have no bleeding, have clear molds, have good dye penetration and are not of print tone, and have excellent color development and very high quality. It was a good printed fabric.

[0038]

The fabric for ink jet printing according to the present invention has no bleeding and is printed up to the middle layer of the fabric, so that it is possible to obtain a high-quality printed fabric having a clear edge and a non-printing tone. In addition, the present invention also enables uniform printing of ultra-fine lines, is very efficient, enables high-quality printing in all fields, and is a practical method that can quickly respond to diversification of fashion. Things.

 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-60-99081 (JP, A) JP-A-2-61183 (JP, A) JP-A-6-116880 (JP, A)

Claims (2)

(57) [Claims] At least one selected from a water repellent and a soft water repellent is unevenly attached to at least one surface layer of the fabric, and the water absorbent is a water repellent and a soft water repellent for the fabric. Characterized in that at least one kind selected from the group consisting of: 2. After at least one kind selected from a water repellent and a soft water repellent is adhered to at least one surface layer of the fabric in a non-uniform manner, the water absorbent is converted from the water repellent and the soft water repellent of the fabric. At least one of the selected portions is not attached, and then the dye ink is dyed on the side of at least one unevenly attached surface selected from the water repellent and the soft water repellent of the fabric by an ink jet method. Characteristic inkjet printing method.