In the fun and colorful textiles, fabric printing Habitat undoubtedly the most important position. According to Ciba printing company estimates global daily output of more than 4,000 fabrics meters, half in Asia production, only 1 l% in North America, more than 70 percent of the cotton fabric printing or polyester-cotton fabric. Printing fabric coating 65 per cent, 15 per cent of reactive dyes, disperse dyes or 10 percent, acid dyes, and other 10 per cent. Printing fabric woman's coat consumption accounted for 40 per cent, 25 per cent of bedding, shirts, furniture fabrics and other products account for 35%. At present most of these traditional printing screen printing process, including the flat screen and rotary screen printing. Screen-printing color dye from the general (or pigment), the promoter of the original paste. Printing is the role of the original paste to a certain viscosity and color flow, which by the hydrophilic polymer modulator of paste from. Paste in the screen printing color play a key role in the formula, which controls the printing paste rheology and color printing penetration and migration. Apart from the dye properties, paste printing quality is the most important decision factor. Currently the largest amount of natural paste including alginate (disperse and reactive dyes are generally used for printing), guar gum or other plastic plant seeds (disperse dyes used in printing) and starch (for Vat Dyes printing). Thickener is natural advantages are easy to clean after printing fixing, the protective film to prevent formation of solid color printing James revealed. The drawback is the need longer time to complete hydration (8-24 h), and the dye may be reaction to the lower volume of color. To acrylic acid (PAA) as the representative of paste is a phony plastic rheology, or shear properties of thin, viscosity changes under stress, and stress can be eliminated immediately revert to the original viscosity. Therefore only synthetic paste l% ~ 3% concentration that is effective, and natural paste concentration required to achieve 10% of the required color paste viscosity, and synthetic paste hydration speed, printing patterns clear, permeability ideals, to a large amount of color and color of the absorbed better. But traditional PAA electrolyte paste on the sensitive, high concentrations of paint color would color viscosity decreased substantially, sometimes fixing after desizing difficulties. Development of new printing paste, including a new generation of PAA paste, synthetic and natural blending paste, applied inverse emulsion technology to produce more fine particles more homogeneous paste. These new paste can be improved color printing fabric, and the permeability of silky.

In the textile printing, the paste can control the color flow and prevent the spread of pigment. Printing quality such as clarity, brightness, color dye penetration and infiltration of such performance depends primarily on paste. At present, except for pigment printing, mainly uses natural paste or modified natural paste, and pigment printing usually coal oil emulsion. However, there are some limitations in natural paste, such as raw materials do not rich, poor stability of the mobility of the poor, higher costs (such as alginate). In addition, according to the dyes and printing machine using different types to choose different natural paste India first test and adjustment, rather than synthetic paste or blending paste can be used with the various materials vendors supporting paste products.

Because of the color yield PASTE high solid content is low and long storage time, can be dealt with easily, pseudoplastic, global development trend is to replace synthetic paste natural paste, especially synthetic pigment printing paste can be solved kerosene emulsion water pollution problems. Practical application that used in the synthesis of reactive printing paste instead of alginate can reduce the cost of printing disperse dyes used in the synthesis of paste, due to the lower volume of solid color from the dye transferred to the fabric, in the Color was enhanced. Synthesis of ethyl PASTE raw materials to maleic anhydride, acrylamide, acrylic acid and acrylate monomers based monomer composition and properties of the paste printing color is particularly the viscosity and drying have a decisive impact of the film. Acrylic used to achieve the required viscosity color, by adding alkali and acrylic polymers can have some flexibility. Therefore, according to the different uses, and the choice of monomer composition. Synthesis also paste the selection of appropriate cross-linking agent, and joined the appropriate surfactants from the environmental point of view, although the degradation of natural paste easier, but the use of natural paste much larger than synthetic paste, it still will produce a certain volume of pollution. Synthesis of the main raw material Thickener an alternative type acrylic chemicals, and the degree of polymerization of paste is not high, with much smaller than natural paste, therefore, in the printing and application of paste will not increase pollution volume.

Synthesis paste with the inherent shear flow, allows for the printing of a color-yan. Lines more precise, clear, more uniform color. But ordinary paste can not be used for the preparation of reactive dyes color because of its extremely sensitive dye ion in the printing after washing, in the form of white fabric sediments. Thus affecting the printing quality fabrics feel and appearance of the United States BFGoodrich Company Modified researchers polyacrylic acid paste made of new synthetic, its low-sensitivity, and can be completely cleaned. In addition, it can reduce the amount of urea in the printing half is conducive to reducing wastewater BOD, can be quick slurry, a fiber dye does not affect bond formation. In the experiment using three kinds of new PASTE: Carbopol 249I (sodium and liquid), Carbopol 2491WC (clean powder) and Carbopol2491WCS (in and clean their own powdered), and compared with sodium alginate, in seven different reactive printing. The results showed that Carbopol paste will be more color-yan, lines more clearly, more soft touch printing quality. BASF's new Lutexal GPECO thickener for pigment printing can improve clarity and outline printing reliability, while reducing costs and reduce environmental pollution. Trial results show that the factory. Such printing paste printing lines not only makes clear, and good operating performance, more color-more-yan. Natural or synthetic fiber in the fiber are good at printing color fastness, it can reduce printing infiltration, thus saving color. The electrolyte paste on the high stability, viscosity fluctuations small printing reproducible increase, the rate increase batches the same color. The paste to powder-like particles can provide products, these products smoke than liquid products low, therefore, granular powder thickener used in the future development direction of this new type of thickener printing products meet European ecological standards such as Oko-Tex Standard 100, etc..

Traditional printing technology users face new demands for high-quality low-cost challenges, which prompted screen printing technologies continue to improve. Although digital inkjet printers in recent years has made significant breakthroughs. Experts forecast to replace traditional printing process still need a long time to dye uptake by direct printing (as in cellulose or polyester fiber reactive dyes, disperse dyes) Users require reliable technology. color-concentration wet fastness excellent Ciba Company introduced CIBACRON P series dye users will be able to meet or viscose fiber reactive dyes cotton cloth printing some of the new requirements. CIBACRON black P-SG and CIBACRON orange P-4R as brown, beige and olive color dye to the basic color reproducibility greatly improved. However, in order to improve the quality of fabric printing it is not enough to rely solely on the dye, to that end, Ciba company developed a new generation of launch Thickener ALCOPR1NT RT-BC, it can improve the precision of the printing and color absorption, but also of good Shaiyan improve Dye staining of the deep. same color dye can save 10% a 15%. Ciba ALCOPRINT DT-CS paste and Ciba TERASIL disperse dubbed printing color printing for high color yield. ALCOPRINT P Series paste and Ciba UNISPERSE series matching paint pigment printing operations will enable more easy and flexible ALCOPRINT PT.RV paste printing can be difficult in a variety of fabrics provide a very clear pattern profile, rather than impervious agent with the original paste low electrolyte sensitivity, can be a substitute for natural paste reactive background discharge printing.

In short, textile printing paste is the direction of the future development of the gradual increase in the amount of paste, and with the major manufacturers of the material will be developed with the introduction of different dyes series matching the various formulations and dosage forms of synthetic paste. Synthesis paste and the blending of natural paste application will also gradually extend. It not only can improve the quality of fabric printing, and can significantly reduce the cost of printing.