JP3474814B2 - Treatment agent for ink-jet printing of cellulosic fiber and / or protein fiber, printing cloth and printing method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pretreatment agent, a pretreatment cloth, and a printing method using the pretreatment agent, which are capable of performing printing by an ink jet method on both cellulosic fibers and / or protein fibers. .

[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, it is uneconomical if a lot of them are not produced. It had the drawback of not being able to respond quickly to diversification.

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 result 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 color developability when applied to a fabric, which is a problem. Was desired.

Further, in the case of dip dyeing or screen printing, generally, a reactive dye has been widely used for cellulosic fibers and an acid dye has been used for protein fibers. In the case of ink jet printing, various dyes are used under various conditions. Since the adjustment work of setting becomes complicated and leads to a decrease in productivity, a method capable of printing with a treatment agent and treatment conditions that are as small as possible, specifically, using a reactive dye, ink jetting both cellulosic fiber and protein fiber It was desired to establish a pretreatment method for printing.

Conventionally, as a method of preventing bleeding, a method of using a water repellent (JP-A-60-99081), a method of using a water-soluble polymer (JP-A-61-55277), and a specific viscosity Method using dye ink (JP-A-62-1)
01699) and a method using a water-insoluble water-absorbent resin and a polyoxyalkylene type nonionic surfactant (JP-A-8-81887) and the like, but in these cases, the bleeding preventing effect is insufficient. Yes, the color is poor,
Further, there is a problem that the texture of the cloth on the part to which the dye ink is attached deteriorates.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, in which the occurrence of bleeding is suppressed,
In addition, an inkjet printing treatment agent, which is excellent in color developability, has a clear printed pattern, and has an excellent texture, and an inkjet printing cloth provided with the same, and further solves the above problems. It is an object of the present invention to provide an inkjet printing method.

[0007]

In order to achieve the above object, the present invention has the following constitution.

[0008] First, the first invention is a water-soluble metal salts, hydrotropes, polyethylene compound emulsion, in
Adjust the pH to 8-9 during the color development process after printing by jet printing
It is a treatment agent for inkjet printing, which contains such a pH adjusting agent and polyoxyethylene glycol ether.

Next, a second invention is a cloth made of cellulosic fibers or protein fibers, to which the treating agent of the first invention is applied, which is a cloth for ink jet printing. is there.

Finally, a third invention is a method using the treating agent described in the first invention, and specifically, a cellulose fiber cloth, a protein fiber cloth, or both of them. The mixed fabric is provided with the treatment agent according to the first invention and dried, and then the fabric is printed by an inkjet method using a reactive dye, and then the fabric is dried, and then the pH is adjusted to 8 to 8. The method is an ink jet textile printing method, characterized in that heat treatment is carried out at 9 .

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION (Cloth) The cloth used in the present invention is a cellulosic fiber such as cotton, rayon, TENCEL (registered trademark of Courtles Fibers Holdings Limited), and animal hair such as wool. A protein fiber such as fiber or silk, each of which is a single fiber or a mixture of two or more fibers, a mixed weave,
It is composed by intermixing. Examples of the cloth include woven, knitted, and non-woven fabrics.

(Treatment Agent) As described above, the treatment agent for inkjet printing (hereinafter referred to as treatment agent) in the present invention is
It contains a water-soluble metal salt, a hydrotrope, a polyethylene compound emulsion, a pH adjuster, and a polyoxyethylene glycol ether, and these are used after being appropriately diluted with water or the like.

(Water-Soluble Metal Salt) Examples of the water-soluble metal salt include Glauber's salt and salt. The affinity between the cloth and the dye ink is improved to improve the dyeing property. In addition, the diffusion of the dye is prevented by the improvement of the dyeing property to the cloth, and the bleeding prevention effect is obtained.

The water-soluble metal salt is preferably used so as to adhere to the cloth in an amount of 2.0 to 7.0% by weight. If the amount of the water-soluble metal salt used is less than 2.0% by weight, the affinity between the dye and the fabric will not be sufficiently improved, and the desired concentration and bleeding preventive effect cannot be obtained, and more than 7.0% by weight. This is because there is a problem that the ink easily bleeds and the coloring is not stable.

(Hydrotrope Agent) Next, as the hydrotrope agent, urea, thiourea, diethylene glycol, glycerin and the like can be mentioned. When the hydrotrope agent is supplied to the heat treatment step after ink jet printing, it gives optimum wettability to the atmosphere. , Which promotes color fixation of the dye.

The hydrotrope is 5.0 for fabrics.
It is preferable to use it so as to deposit 20.0% by weight. When the amount used is less than 5.0% by weight, the amount of water is insufficient during the color forming step, so that satisfactory color developability cannot be obtained.
If it is used in an amount exceeding 0.0% by weight, there is a problem that color bleeding occurs and the concentration decreases due to permeation.

(Polyethylene Compound Emulsion) Further, the above-mentioned polyethylene compound emulsion is obtained by mixing a polyethylene compound with a surfactant in water and emulsifying it, and suppressing permeation of the dye in the thickness direction and the surface direction of the cloth. The purpose is to do. By the polyethylene compound emulsion, bleeding is suppressed, and at the same time, permeation of the dye, that is, diffusion is suppressed, and as a result, dark and vivid color is obtained. .

Among the above-mentioned polyethylene compound emulsions, those having an effect as a softening agent are most suitable, and a specific example of the product is Finetex P.
EN (manufactured by Dainippon Ink Industry Co., Ltd.), Iodozole PE
400 (manufactured by Nippon NSC Co., Ltd.), Sun Mariner S712 (manufactured by Nichika Kagaku Co., Ltd.), or a polypropylene compound or the like is suitable. With such a flexible polyethylene compound emulsion, it is possible to prevent bleeding, improve the texture, and reduce the occurrence of creases in the fabric.

The content of the polyethylene compound in the polyethylene compound emulsion is 2.0 to 2
0.0% by weight is preferable, and the amount of the emulsion attached to the cloth is preferably 20.0 to 75.0% by weight. That is, the amount of the polyethylene compound attached to the cloth is 0.4 to 15.0% by weight.

At this time, if the content of the polyethylene compound in the cloth is less than 0.4% by weight, satisfactory bleeding preventing effect and softening effect of the texture cannot be obtained, resulting in poor printing quality and easy wrinkling. If it is used in excess of 15.0% by weight, it may cause problems such as a texture effect, discoloration and poor color development.

(PH Adjusting Agent) Next, a pH adjusting agent is used in the treating agent of the present invention. Specifically, it is possible to use an alkaline agent such as baking soda or soda ash, and thereby adjust the pH during the color development step to 8-9. For that purpose, the amount of the pH adjuster attached to the cloth is set to 0.5 to 5.0% by weight.

(Polyoxyethylene glycol ether) And, further, polyoxyethylene glycol ether improves the solubility of the dye on the cloth when the dye is applied in the printing step by adding this. It absorbs moisture from steam and enables improvement in color development. In particular, in the case of this polyoxyethylene glycol ether, it is possible to deal with slight fluctuations in the coloring temperature, so even if there is a slight temperature setting error, it will not hinder the coloring, and it will greatly affect the stability of coloring. To do.

(Inkjet Printing Fabric) As described above, a water-soluble metal salt, a hydrotrope agent, a polyethylene compound emulsion, a pH adjusting agent, and a polyoxyethylene glycol ether are used, and these are diluted with water or the like to perform inkjet printing. I explained in detail that it is a treatment agent for
The treatment agent is applied to the cloth by a pad nip method, a spray method, a coating method, a kiss roll method, and the like, and then dried to obtain the ink-jet printing cloth according to the second invention.

(Inkjet printing method) As described above,
A treatment agent for inkjet printing is applied to a fabric to form a pretreated fabric, and the fabric is printed by an inkjet method. As the ink jet method used in this printing process, a heating resistance element is embedded in the nozzle, the ink is boiled by the heat generation, and the ink is ejected by the pressure of the bubble, and the piezoelectric element is deformed by applying an electric signal. Pulse jet method that excites volume changes in the ink chamber and ejects ink particles, ink is continuously jetted under pressure from a nozzle that is vibrating ultrasonically to atomize, and the particles are controlled to a charged amount Pass through a constant electrolysis An example is a charge control method in which recording is performed by deflecting and recording is performed separately for recording and non-recording particles.

After passing through the printing process in this way, the cloth is dried and then supplied to the coloring process, and the dye is fixed and reacted in the moist heat to obtain a product. At this time, it is important to adjust the pH to 8 to 9 as described above,
Here, if the pH is less than 8, fixation and reaction of the reactive dye will be insufficient and color development will be poor, and if it exceeds 9, the fibers will be hydrolyzed and cause embrittlement.

[0026]

EXAMPLES Next, the present invention will be described in detail based on examples.

Example 1 First, 100% cotton was used as a cellulosic fiber, and a plain weave fabric having a basis weight of 120 g / m ² was woven with a spun yarn composed of 40 warps and 40 wefts (English cotton count). After that, the woven fabric is fried and desized by a conventional method.
Scouring and bleaching were performed.

Then, a treating agent having the following formulation was applied to the above cloth by the pad nip method so that the pickup rate was 70%, and then dried.

[0029] Prescription (1)     Bow salt (water-soluble metal salt) 2.5% by weight     Urea (hydrotrope agent) 10.0% by weight     Finetex PEN (polyethylene compound emulsion)                                                           5.0% by weight     Baking soda (pH adjuster) 2.0% by weight     Polyoxyethylene glycol ether 2.0% by weight     Water 78.5% by weight     ──────────────────────────────────                                                       100.0% by weight

Next, the following four types of reactive dye-containing inks were mounted on a bubble jet type ink jet printing apparatus, and the above cloth was continuously printed at 360 dots / inch, and then dried, and further, The product of Example 1 was obtained by performing heat treatment in a steam of 91% Rh for 20 minutes at a temperature of 104 ° C, followed by washing and drying.

[0031] (1) C.I.Reactive Yellow 2 20.0% by weight       Water 80.0% by weight (2) C.I.Reactive Red 24 20.0% by weight       Water 80.0% by weight (3) C.I.Reactive Blue 49 20.0% by weight       Water 80.0% by weight (4) C.I.Reactive Black 1 20.0% by weight       Water 80.0% by weight

(Example 2) Subsequently, using 100% silk as the protein fiber, a plain weave fabric having a basis weight of 97 g / m ² was woven with silk yarns having a warp of 21 d and a width of 21 d, and the woven fabric was woven by a conventional method. After baking, desizing, scouring, and bleaching, the cloth was treated with a treating agent having the same formulation as in Example 1 by a pad nip method so that the pickup rate was 70%, and then dried, and the same as Example 1. Printing was performed under the method and conditions described in 1. to obtain the product of Example 2.

(Example 3) Next, a plain woven fabric having a basis weight of 141 g / m ² was woven using a mixed yarn composed of 41% cotton and 59% silk, and then the woven fabric was quilled and desized by a conventional method. , Scouring, and bleaching treatment, and then the above fabric was treated with a treating agent having the same formulation as in Example 1 by a pad nip method to pick up a ratio of 70.
% So that the product is dried, and printing is performed under the same method and conditions as in Example 1 to obtain a product of Example 3.

(Comparative Example 1) 100% cotton as in Example 1
A treatment agent having the following formulation was applied to the unprocessed cloth by the pad nip method so that the pick-up rate was 70%, and then dried. Subsequently, printing was carried out under the same method and conditions as in Example 1 to obtain a product of Comparative Example 1.

[0035] Prescription (2)     Sumifuru Oil E21 0.3% by weight       (Sumitomo Chemical Co., Ltd. fluorine-based water repellent)     Sodium carbonate (fixing reaction agent) 2.0% by weight     Water 97.7% by weight     ──────────────────────────────────                                                       100.0% by weight

(Comparative Example 2) 100% cotton as in Example 1
A treatment agent having the following formulation was applied to the unprocessed cloth by the pad nip method so that the pick-up rate was 70%, and then dried. Subsequently, printing was performed under the same method and conditions as in Example 1 to obtain a product of Comparative Example 2.

Prescription (3) Aquakeep SA60S 3.0 wt% (Sumitomo Seika Chemicals Ltd. acrylic water-insoluble water-absorbing resin) Pegnol L-6 3.0 wt% (Toho Chemical Industry's polyoxyalkylene type non-) Ionic surfactant) Ethylene glycol (solvent) 5.0 wt% Water 89.0 wt% ───────────────────────────── ───── 100.0% by weight (Comparative Example 3) A 100% cotton untreated cloth similar to that of Example 1,
A treatment agent having the following formulation was applied by a pad nip method so that the pickup rate was 70%, and then dried.
Subsequently, printing was carried out under the same method and conditions as in Example 1 to obtain a product of Comparative Example 3.

[0038] Prescription (2)     Carboxymethyl cellulose (paste) 2.0% by weight     Sodium carbonate (fixing reaction agent) 2.0% by weight     Water 96.0% by weight     ──────────────────────────────────                                                       100.0% by weight

The bleeding and color-developing properties of the fabrics to be printed in Examples 1 to 3 and Comparative Examples 1 and 2 obtained as described above were visually observed by a specialist inspector. The results are shown in Table 1 below. The evaluation in Table 1 is as follows.

(Bleeding) ◎: No blur ○: Slight blurring △: Bleed ×: remarkable bleeding

(Coloring property) ○: Good △: Slightly defective ×: defective

[0042]

[Table 1]

As is clear from the above results, the printing cloth obtained by the constitution of the present invention had no bleeding and good color development, and was of an extremely excellent printing quality.

[0044]

According to the present invention, it is possible to obtain a cellulosic fiber cloth, a protein fiber cloth, or a cloth obtained by blending, knitting, and knitting cellulosic fibers and protein fibers, which has no bleeding and is excellent in color development. Therefore, it is possible to provide high-quality printed products in various fields, and it is possible to quickly respond to diversification of taste in the field of fashion. Furthermore, since cellulose fibers and protein fibers having different properties can be treated by the same method, there is also an effect that productivity is improved.

─────────────────────────────────────────────────── ─── Continued Front Page (51) Int.Cl. ⁷ Identification FI D06P 5/00 112 D06P 5/00 112 B41J 2/01 B41M 5/00 A B41M 5/00 B D06M 13/432 D06M 13/432 15/227 15/227 D06P 3/10 D06P 3/10 3/14 Z 3/14 3/66 Z 3/66 3/82 C 3/82 5/20 C 5/20 D06M 101: 10 // D06M 101 10 B41J 3/04 101Y (56) Reference JP-A-11-247076 (JP, A) JP-A-10-183481 (JP, A) JP-A-9-67783 (JP, A) JP-A-2000-110084 (JP, A) JP 2000-226780 (JP, A) JP 2001-98469 (JP, A) JP 2000-327976 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) ) D06P 5/00 102-104 D06P 5/00 111

Claims (3)

(57) [Claims] 1. A water-soluble metal salt, a hydrotrope agent, a polyethylene compound emulsion, after inkjet printing
A pH adjusting agent that adjusts the pH during the coloring step to 8-9 ,
And a treatment agent for ink-jet printing, comprising polyoxyethylene glycol ether. 2. A cloth for cellulosic fibers and / or protein fibers, to which the treatment agent according to claim 1 is applied, which is a cloth for inkjet printing. 3. A cellulosic fiber cloth, a protein fiber cloth, or a cloth in which both are mixed, the treatment agent according to claim 1 is applied and dried, and then a reactive dye is used to carry out the above inkjet method. An ink-jet printing method, comprising printing a cloth, drying the cloth, and then heat-treating the cloth at a pH of 8 to 9.