Fabric coating

- Oct 13, 2017-

Fabric coating, as the name suggests, is coated with a layer of other materials on the surface of the material. It also shows that the fabric coating has two processing objects - the base fabric, the coating material, and the combination of the two technologies - coating technology.

Generalized coating techniques, including lamination, that is, the application of a layer of adhesive on the base fabric, covered with a thin film or other material, heated and pressed to form a composite fabric; or the film itself is the adhesive material, Bind the base fabric with other materials.

In the narrow sense is the coating material coated to the fabric surface of the processing process. The coating method of the fabric coating will be selected according to the product requirements and the characteristics of the coating agent used. Generally divided into two types of direct coating and indirect coating. The direct coating method is to apply the coating agent directly to the surface of the fabric by the physical and mechanical method. The indirect coating method is also called the transfer coating, and the coating agent is coated with a special anti- (Also known as release paper). And then with the fabric pressure, so that the coating with the fabric adhesion, and then transfer paper and fabric separation.


First, the coating method and coating processing equipment


Fabric coating finishing, in terms of narrow sense is the coating material coated to the fabric surface of the processing process. The coating method of the fabric coating will be selected according to the product requirements and the characteristics of the coating agent used. Generally divided into two types of direct coating and indirect coating. The direct coating method is to apply the coating agent directly to the surface of the fabric by the physical and mechanical method. The indirect coating method is also called the transfer coating, and the coating agent is coated with a special anti- (Also known as release paper). And then with the fabric pressure, so that the coating with the fabric adhesion, and then transfer paper and fabric separation.


There are many types of coating processing equipment, some of the commonly used equipment are floating blade coating machine, knife roll coating machine, reverse roller coating machine, scraping roller coating machine, rotary screen coating machine, indirect coating machine (also Called transfer coating machine).


Second, the development of coating agent


There are many types of coating agents for coating finishing. Commonly used latex, polyurethane, polyacrylate, polyethylene and other polymer. Among these coating agents, polyacrylates and urethane-based resins have been particularly important in recent years. Polyacrylates are made by copolymerizing different acrylate monomers, which may have different physical and mechanical properties depending on the materials used. The polyurethane is prepared by reacting a compound containing a diisocyanate group with a polyhydric alcohol or other active hydrogen-containing Compounds are added together, there is no by-product in the reaction. A few years ago, the domestic fabric coating processing used by most of the coating are * imports, nearly two years, there are several domestic chemical plants and scientific research units to produce high-level coating agent, which for the development China's fabric coating technology has created favorable conditions.


Third, China's fabric coating technology development status quo


In China, the coating processing technology for rubber, paper and other industries is not a new technology, but in the textile printing and dyeing industry in the application of coating technology, but only in recent years to expand the development. China's large population, vast territory, the demand for coated fabrics, but the domestic production is slow. According to the survey, the Ministry of Commerce in recent years from Japan, South Korea, Taiwan and other places imported coated fabric

More than 2000 million meters, mainly due to Guangdong, Fujian coastal areas after opening up, the vigorous development of clothing, footwear processing industry requires a large number of coated fabrics as raw materials. However, for our country, high-grade fabric coating finishing this new technology, the new process is starting late, although there is a certain amount of products to enter the market, but it is not a pity? Due to small variety of colors, the quality can not level, it is difficult to enter the international market. For this situation, the Ministry of Textile

In the development of "Seventh Five" Spark plan meeting decided to transfer coating technology and product development included in the "seven five" during the national key technology development project to study the transfer coating equipment, coating agent synthesis and coating Products to start side by side, come up with the characteristics of our country. In short, in China, the development of fabric coating technology, on the one hand will increase the versatility and diversification of textiles to bring a new market, and the most important is to bring the national economy more significant social and economic benefits.


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