JP2732999B2 - Coloring and anti-dyeing method by inkjet 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 method for dyeing and preventing coloration by an ink jet system.

[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.
A technique for printing the result by an ink jet method has been developed, and has recently been put to practical use in the paper field. This ink-jet system has attracted attention in the field of textiles since it can be produced without spending time and money, and attempts have been made to apply it to fabrics.

[0004] Among them, studies have been made on coloring prevention and discharge printing by an ink-jet method.
JP-A-365-365 discloses a method in which ink containing a reducing agent and ink containing a dye that does not decompose into a reducing agent are made to fly droplets from separate nozzles on a colored cloth, and both inks are applied to the same place. An ink-jet dyeing prevention method using ink jet dyeing is disclosed in Japanese Patent Application Laid-Open No. Sho 62-206092. There has been proposed an ink-jet discharging method characterized by discharging.

[0005]

However, in the method described in JP-A-61-6365, since the dye ink and the reducing agent ink are simultaneously applied to the same location, bleeding may occur in the dye ink depending on the type of cloth. However, there are problems such as generation of the dye and poor removal of the ground dye.
In the method described in JP-A-92-92, a reducing agent coexists in the ink, and when the ink is stored for a long period of time, there is a problem that the reducing agent in the ink affects the dye over time and the color density is reduced. there were.

The present invention has been made in view of the above problems, and has as its object to provide a method for easily and easily obtaining a high-quality colored anti-dyeing product by an ink jet system.

[0007]

SUMMARY OF THE INVENTION The object of the present invention is to provide a printed pattern by applying a dye ink containing a dye which does not decompose to a reducing agent to a fabric by an ink jet method, and then applying a reducing agent to the printed pattern. This is achieved by a coloring and anti-dyeing method using an ink jet system, which is characterized by subsequently dyeing with a reductive bleaching dye.

Hereinafter, the present invention will be described in detail.

In the present invention, the fabric includes a woven fabric, a knitted fabric, and a nonwoven fabric. The fibers forming the fabric include natural fibers such as cotton, rayon, hemp, silk, and wool; semi-synthetic fibers such as acetate and triacetate; polyesters;
Synthetic fibers such as polyamide and acrylic are exemplified.

The dye ink used in the present invention is:
It consists of a dye and a solvent.
A surfactant, a surface tension adjuster, a pH adjuster, an electric conductivity adjuster and the like are added. The type of the dye may be selected according to the fiber constituting the fabric, and any of a direct dye, a reactive dye, an acid dye, a cationic dye, a disperse dye, a naphthol dye and the like can be used. Examples of the solvent include water or a mixture of water and a water-soluble organic solvent. Examples of the water-soluble organic solvent include ethylene glycol, diethylene glycol, triethylene glycol, thiodiethylene glycol, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, and polyethylene glycol dimethyl ether. Glycols.

The dye which does not decompose into a reducing agent is, for example, a reactive dye. I.
Reactive Blue 2,4,5,8,10,
13, 14, 15, 25, 29, 31, 40, 41, 4
9, 50, 52, 63, 71, 72, 74, 75, 7
9, 82, 109, 112, etc. are red-based, and C.I.
I. Reactive Red 2,3,4,5,8,
11, 13, 24, 29, 31, 33, 43, 55, 5
8, 65, 66, 78, 83, 84, 120, 141,
151, 184, 193, 206, 220, etc., as C.I. I. Reactive Yellow
1,2,3,4,7,18,22,27,39,8
1,84,85,86,95,102,135,13
8, 143, 161, 162, 163, 164, etc., are C.I. I. Reactive Blac
k 1, 8, 13, 23, 39 and the like.

The application of the dye ink containing a dye that does not decompose to the reducing agent to the fabric by the ink jet method involves embedding a heating resistor element in a nozzle, causing the ink to boil by the heat generated, and causing the ink to generate pressure by the pressure of the bubbles. Bubble jet method to discharge, pulse jet method to excite the volume change of the ink chamber by applying an electric signal to the piezoelectric element to deform and eject the ink particles, and to continuously pressurize the ink from the nozzle that vibrates ultrasonically to produce particles The control is performed by a charge control method or the like in which the particles are passed through a constant electric field and deflected to control the amount of charge, and the recording is performed separately for recording and non-recording particles.

Thereafter, the fabric is treated by a method corresponding to the dye contained in the dye ink, and the dye is fixed to the fiber to form a printed pattern.

The term "reducing agent" as used in the present invention means a substance which decomposes a reductive decolorizing dye of a colored fabric, and includes stannous chloride, stannous oxalate, stannous acetate, stannous fluoride, hydrosal. Phyto, thiourea dioxide, sodium sulfoxylate-formaldehyde complex represented by Rongalit, formaldehyde sulfoxylic zinc salt represented by dechlorin, and the like, but are not limited thereto. Any substance that decomposes and eliminates coloring is included.

As a method for applying such a reducing agent to a printed pattern, there is a method in which a reducing agent is added to a printing paste and applied using a screen printing machine, a roller printing machine, a rotary printing machine or the like.

In the present invention, the reductive bleaching dye is one which is decomposed by the above-mentioned reducing agent to eliminate coloring, and the type of the dye may be selected according to the fibers constituting the fabric. Reactive dyes, acid dyes, cationic dyes,
Any of disperse dyes and naphthol dyes can be used. As the reductive bleaching dye, for example, when a reactive dye is taken as an example, as a blue dye, C.I. I. Reactive
Blue 19, 21, 27, 28, 38, 77, 8
9, 100, 122, 147, 158, 194, etc. are red-based C.I. I. Reactive Red 2
1,22,23,24,35,49,63,106,1
09, 111, 112, 113, 114, 170, 18
0, etc., as yellow, C.I. I. Reactive
Yellow 15, 17, 23, 24, 37, 4
2,57,75,76,77 etc. are black
C. I. Reactive Black 5,14,3
1 and the like.

Examples of the method for dyeing with such a reductive bleaching dye include a dyeing method, a full-screen printing method using a rotary screen, a spray method, a padding method, and an ink jet method. After that, treat with the method according to the dye,
The dye is fixed to the fiber to form the product.

It is preferable to apply a kind selected from a water repellent or a soft water repellent to the cloth and a sizing agent by a padding method, a spray method, a coating method or the like in order to prevent bleeding.

The water repellent is not particularly limited, and any common water repellent such as a fluorine compound, a silicon compound and a zirconium compound can be used. In addition, octadecyl ethylene urea, zirconium acetate,
Examples include polyolefin-based compounds, wax-based compounds, and silicone-based 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.

The sizing agent is not particularly limited, and includes starches (starch, soluble starch, water-soluble starch derivatives, etc.), water-soluble cellulose derivatives (carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose, etc.), sodium alginate, gum arabic, gum (Locust bean gum, guar gum, etc.), water-soluble protein (gelatin, glue, etc.), water-soluble synthetic polymer compound (sodium polyacrylate, polyvinyl alcohol, polyethylene oxide, polyvinylpyrrolidone, polyacrylamide, polyethyleneimine, quaternary) Water-soluble cationic polymer). The amount of the sizing agent is preferably used such that the sizing agent adheres to the fabric at a rate of about 0.1 to 3% by dry weight. That is, if used in a large amount, the hand becomes too hard, so that it is used in the above ratio.

One type selected from the above-mentioned water repellents and soft water repellents and the sizing agent include fixing agents, for example, alkaline substances such as sodium carbonate and sodium hydrogen carbonate, and hydrotropes, for example, urea, monomethylurea, and the like. Dimethylurea, thiourea, monomethylthiourea, dimethylthiourea, formamide, dimethylformamide, dimethylacetamide and the like may be added.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on embodiments.

Example 1 In this example, a warp 50-count single yarn was used as a fabric.
A cotton plain fabric having a warp density of 72 yarns / inch and a weft yarn density of 72 yarns / inch consisting of a single yarn of the 50th weft is baked, desizing, scouring, etc.
Bleached and mercerized products were used.

Sumiflu Oil EM-21 is added to the plain fabric.
(Fluorine-based water repellent manufactured by Sumitomo Chemical Co., Ltd.) 2% by weight, Duck Algin NSPM (manufactured by Kibun Food Co., Ltd., medium viscosity type sodium alginate) 0.5% by weight, urea (hydrotrope agent) 5% by weight, sodium hydrogencarbonate (Reaction fixing agent) A processing liquid consisting of 3% by weight and 89.5% by weight of water was padded, squeezed with a mangle to a squeezing ratio of 65%, and dried at 120 ° C. for 2 minutes.

On the other hand, C.I. I. Reactive Blu
A dye ink composed of 10% by weight of e2, 8% by weight of urea, and 82% by weight of water was prepared, mounted on an inkjet printer, and a printed pattern was formed on the pretreated plain fabric at 8 dots / mm. Next, the printed fabric thus obtained was dried at 120 ° C. for 2 minutes.

Then, only in the portion where the printed pattern of the plain fabric was formed, duck algine NSPH (manufactured by Kibun Food Co., Ltd., high-viscosity type sodium alginate) 20 g / l, Registol HWC (Meishei Chemical, an anti-dyeing agent for reactive dyes) A screen-printing machine was used to print 80 g / l and the remainder of the paste adjusted with water using a screen printing machine, and dried at 120 ° C. for 2 minutes.

Further, C.I. I. Reactive Yellow 15
10% by weight, 2% by weight of duck algin NSPH (manufactured by Kibun Food Co., Ltd., high viscosity type sodium alginate), 5% of urea
% By weight, 3% by weight of sodium bicarbonate and 80% by weight of water are dyed, dried at 120 ° C. for 2 minutes, and then at 102 ° C.
Was carried out for 8 minutes under saturated steam, followed by soaping and drying to obtain the product of Example 1.

Example 2 The pretreatment agent, dye ink, anti-dyeing paste and colored paste used in Example 1 were stored at room temperature for 2 weeks, and then subjected to coloring and anti-dyeing in exactly the same manner as in Example 1. 2 products were obtained.

Comparative Example 1 The plain woven fabric after the mercerization treatment of Example 1 was treated with C.I. I. Re
active Red22 15 g / l, C.I. I. Re
active Yellow 23 5 g / l, urea 5
0 g / l, sodium bicarbonate 30 g / l, acetic acid 20 g / l
l and the rest of the processing solution adjusted with water are padded,
Drying was performed at 20 ° C. for 2 minutes.

On the other hand, C.I. I. Reactive Yel
low 158% by weight, GCR-13 (Senka,
8% by weight, 5% by weight of urea and 79 of water
A dye ink consisting of% by weight was prepared, mounted on an ink jet printer, and a printed pattern was formed on the plain fabric after dyeing at 8 dots / mm. Next, drying was performed at 120 ° C. for 2 minutes, and then steaming was performed for 8 minutes under saturated steam at 102 ° C., followed by soaping and drying.
Got the product.

Comparative Example 2 The dyeing solution and dye ink used in Example 1 were stored at room temperature for 2 weeks, and then subjected to coloring and dyeing in the same manner as in Example 2 to obtain a product of Comparative Example 2.

The products obtained in Examples 1 and 2 and Comparative Examples 1 and 2 were evaluated for bleeding of the dye ink, sharpness at the time of molding, and stability of the ink by visual observation by ten professional inspectors. Table 1 shows the results.

[0033]

[Table 1] Bleeding of dye ink ○: No bleeding Δ: Slight bleeding ×: Bleeding Sharpness at the time of molding ○: Excellent sharpness at the time of molding △: Slightly poor at the time of molding ×: Poor at the time of molding Ink stability ：: very excellent ink stability ：: excellent ink stability △: slightly poor ink stability ×: poor ink stability

As is clear from Table 1, the products obtained in the examples had less bleeding of the dye ink, sharper printed patterns, and the ink used was stable over time as compared with the comparative example. You can see that it is doing.

[0035]

As described in detail above, the product obtained by the method of the present invention is very useful because it has little bleeding and a sharp printed pattern. In addition, since the dye ink used is stable for a long period of time, the accompanying effects of the color development stability of the dye and the processing stability of anti-dyeing can be obtained.

Claims (1)

(57) [Claims] 1. A textile print containing a dye ink containing a dye that does not decompose into a reducing agent is applied by an ink-jet method to form a printed pattern, and then a reducing agent is applied to the printed pattern, followed by dyeing with a reductive decolorizing dye. A coloring and anti-dyeing method by an ink-jet method, characterized in that: