JPH0224665B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a textile printing method, and more particularly to a method of performing textile printing by direct lithographic printing or lithographic offset printing. [Prior Art] Conventional textile printing has mainly been roll printing, screen printing and sublimation transfer printing, each of which has serious drawbacks. In other words, it is impossible to print a graphic design with a photographic tone using roll printing or screen printing.
Furthermore, although it is possible to create graphic designs using transfer printing, it has the major drawback of being limited to specific fabrics such as polyester. In addition, the former method suffers from large printing losses during processes such as steaming, soaping, and water washing, and also has the drawback of easily causing fabric white spot contamination and water pollution, and the latter method's transfer printing also has poor texture. Another drawback was that phenomena such as eye peeling were likely to occur. [Problems to be Solved by the Invention] The problems to be solved by the present invention are to develop a printing method that does not have any of the above-mentioned difficulties in the conventional printing methods. The object of the present invention is to develop a printing method that can print good graphic textile designs not only on polyester but also on various other fabrics. [Means for solving the problem] This problem is solved by adding and reacting (a) a solution or dispersion of a metal compound and (b) a solution or dispersion of a nitrogen compound to a water-soluble dye. This is then dispersed in a binder for lithographic printing ink to perform lithographic direct printing or lithographic offset printing on the surface of the fabric, and after drying, the usual post-treatments such as steaming, soaping, and washing are performed. Strain,
This is accomplished by forming a pattern of dye on the fabric. [Structure and operation of the invention] The method of the present invention consists of: (i) printing on a fabric by direct lithographic printing or lithographic offset printing means, followed by ordinary steaming,
(ii) In this case, use an ink prepared by mixing a water-insoluble dye with a normal lithographic printing ink vehicle. to use,
and (iii) reacting a metal compound and a nitrogen compound with the dye as a means of insolubilization. More preferably, both the metal compound and the nitrogen compound are added to the water-soluble dye in the form of a solution or dispersion and reacted therein. Since it is composed of these three components (i) to (iii), it can produce the following effects. That is, compared to the conventional method, according to the method of the present invention, (A) a graphic-like gradation design can be obtained. (B) Fast because it is lithographic printing. (C) It is economical because the printing plate (mold) cost is low and it is suitable for producing small lots and a wide variety of printed products. (D) It is not limited to polyester, but it is also possible to print on various fabrics, such as natural fibers and recycled fibers such as cotton, silk, hemp, and rayon, as well as synthetic fibers such as nylon. It has the following effects. More specifically, in the method of the present invention, water-soluble dyes such as direct dyes, acid dyes, acidic metal-containing dyes, basic dyes, etc. are subjected to water-solubilization treatment to give them properties as pigments, and this is then added to a vehicle for ordinary lithographic inks. By kneading the material, direct lithographic printing or lithographic offset printing is possible, and delicate patterns and designs can be easily and economically reproduced on both natural fiber and synthetic fiber fabrics. Furthermore, since it does not rely on gravure printing, it can be economically and quickly adapted to the production of small lots and a wide variety of products. Furthermore, since the dye is insolubilized, it does not cause any pollution problems, and furthermore, it is possible to prevent the harmful effects of peeling off the whites of the eyes and contaminating the white areas. As the water-soluble dye used in the present invention, any of various water-soluble dyes can be widely used, but among them, direct dyes, acid dyes, acidic metal-containing dyes, and basic dyes are preferred. As a means for making the water-soluble dye water-insoluble, the dye is treated with a metal compound, preferably a solution or dispersion thereof, and a nitrogen compound, preferably a solution or dispersion thereof. At this time, it is necessary to treat the dye with the above two types of compounds, which allows printing of extremely vivid, sharp, delicate Greitsch style designs with excellent chroma. At this time, a delicate graphic-like design can be obtained by processing only one of them, but its clarity, color,
There is a tendency for the sharpness to decrease. In the present invention, both of these compounds may be used for treatment at the same time, but particularly in the present invention, it is preferable to first treat with a metal compound and then with a nitrogen compound; in this case, The best results can be obtained in each characteristic. Examples of the metal compounds used in the present invention include chlorides and sulfides of metals such as Na, Fe, Ca, Al, and Ba, as well as oxides of Si and Ti. Particularly preferred are sodium sulfate, sodium chloride, silicic acid, barium chloride, and the like. These metal compounds are usually used in the form of solutions or dispersions. Examples of nitrogen compounds used in the present invention include amines, amides, and other nitrogen-containing compounds, such as stearylamine, 1-
Examples include aminododecane, phenylenediamine, oleic acid amide, guanidine hydrochloride, diphenylguanidine, etc., and the present invention is not limited to these, but ortho-phenylenediamine and diphenylguanidine are particularly preferred. . These nitrogen compounds are also preferably used after being dissolved or dispersed in an appropriate solvent. The amount of each of these compounds to be used is sufficient as long as it can sufficiently insolubilize the dye, but usually 300 to 3000 parts by weight of the metal compound is used, preferably 500 parts by weight, per 100 parts by weight of the dye.
~1500 parts by weight, and about 80 to 1000 parts by weight, preferably 100 to 500 parts by weight of the nitrogen compound. The reaction between the dye and each of these compounds can be carried out by mixing and stirring a solution or dispersion of each of the compounds with the dye at room temperature or under heating. As the lithographic ink vehicle used in the present invention, a wide range of materials that have been conventionally used as vehicles for this type of lithographic ink can be used as they are, such as rosin, rosin-modified phenolic resin, alkyd resin, and oil-soluble acrylic resin. Any resin that can be used as a lithographic vehicle, such as petroleum resin, or a varnish consisting only of a natural drying vegetable oil such as tung oil or linseed oil or a synthetic drying oil without resin can also be used. In addition, the present invention does not preclude the addition of other usual additives used in lithographic inks, such as thickeners, thickening agents, gelling agents, etc.
Examples include dryers, Tokinis, anti-slip agents, etc. In the present invention, an ink is prepared according to a conventional method using this lithographic ink vehicle and the water-insolubilized product of the above-mentioned water-soluble dye. In this case, the ink and the means used may be in accordance with conventional methods. The ink thus obtained is used to perform lithographic direct printing or lithographic offset printing on the surface of the fabric. In this case, not only synthetic fibers but also natural fibers can be used.For example, synthetic fibers include various types of nylon, polyester, acrylic, and various other synthetic fibers, and natural fibers include cotton, silk,
Examples include hemp and wool. Any of the conventional methods such as lithographic direct printing or lithographic offset printing can be effectively used. The thus printed fabric is then dried. This drying is preferably dry to the touch or completely dry.
This is then followed by the usual steaming, soaping and rinsing. [Example] The method of the present invention will be explained below with reference to Examples.
All numerical values indicating blending ratios indicate weight ratios unless otherwise specified. Example 1 Dye, metal compound solution (or dispersion) [Sumilight Red 4B (Sumitomo Chemical) (CIDirect
Red 81) ...2 BaCl ₂ ...20 Boiling water ...100] Nitrogen compound solution [Soxinol D (Sumitomo Chemical, diphenylguanidine) ...5 Ethanol ...10 Hydrochloric acid ...4] Mix the above two solutions. , after stirring reaction, filtration,
After washing and drying, a water-insoluble and lipophilic pigmented dye lake is obtained. Manufacture of lithographic ink [Above dye lake...1 Super gloss medium (Dainippon Ink)...1 Linseed oil varnish...0.2 Extra varnish...0.1] The above composition was kneaded with three rolls and used for planographic printing. Ink. Printing Printing Direct lithographic printing (lithography) is performed on two types of fabrics, cotton and silk, using the above ink, and after the ink dries, steaming, soaping, and washing are performed to create a deep red tone with high fastness. A printed product with a pattern can be obtained. Example 2 Two types of dye lakes were prepared in the same manner as in Example 1 using the formulations shown in Table 1 below.

[Table] 1 part each of the above two dye lakes, 1-1 and 1-2, 1 part super gloss medium, and linseed oil varnish.
Mix with three rolls at a ratio of 0.2 and extra varnish 0.1 to obtain two types of red ink. They are referred to as ink 1-1 and ink 1-2, respectively. The former ink is printed on the silk fabric surface, and the latter ink is printed on the nylon fabric surface using a lithographic offset printing machine, and after drying, the usual steaming, soaping, and water washing processes are performed. It also shows a strong deep red color. Example 3 The dye lakes of four colors as shown in Table 2 below were prepared in the same manner as in Examples 1-2.

[Table] Using the above four color dye lakes, inks were prepared according to the same formulation as in Examples 1 and 2. The yellow produced in this way
A color photographic floral pattern is printed on the surface of cotton, silk, nylon, rayon, and linen fabric using a lithographic offset printing machine using four colors of ink: red, indigo, and ink. After the ink is dry, the usual steaming, soaping, and washing processes are performed. A printed floral pattern with tones and colorful patterns similar to those of a color photograph was dyed and formed on each fabric. Example 4 The same procedure as in Examples 1 to 3 was followed to produce dye lakes as shown in Table 3 below.

【table】

[Table] Using these four color dye lakes, Examples 1-
Make four colors of ink using the same formula as in step 3. These four colors of ink are used to print landscape color photographs on the surface of silk and nylon fabrics according to the manuscript using a lithographic offset printing machine, and after the inks are dry, the usual steaming, soaping, and water washing processes are performed. The resulting prints, both on silk and nylon, are robust and exhibit a colorful graphic-like color tone. Example 5 The following dye lakes are prepared using basic dyes and treated in the same manner as in Examples 1 to 4.

【table】

[Table] Using this dye lake, ink was prepared according to the same formulation as in Examples 1 to 4. Using this ink, a graphic pattern is printed on acrylic and cotton fabric using a lithographic offset printing machine, and after the ink dries, it is steamed,
After soaping and washing, a bright yellow print is obtained on both fabrics. In the embodiments of the present invention, ultra-gloss medium is used as the binder for lithographic printing ink, but the invention is not limited to this, and any general binder for lithographic ink can be used, such as rosin-modified binder. It includes all polymeric substances such as phenolic resins, alkyd resins, oil-soluble acrylic resins, and petroleum resins, as well as natural drying oils such as linseed oil and tung oil, their polymerized oils, synthetic drying oils, and mineral oils.

Claims (1)

[Claims] 1. To a water-soluble dye, (a) a solution or dispersion of a metal compound, and (b) a solution or dispersion of a nitrogen compound are added and reacted to form a pigment, and this is used as a lithographic printing ink. Direct lithographic printing or lithographic offset printing is performed on the surface of the fabric using the ink obtained by dispersing it in a vehicle for printing, and after drying, the usual post-treatments such as steaming, soaping, and washing are performed to print on the fabric. A printing method characterized by forming a dye dye pattern. 2. The textile printing method according to claim 1, characterized in that the above (a) is added to the water-soluble dye and reacted, and then the above (b) is added and reacted.