The dipped polyester thread is a skeleton material commonly used in the production of rubber hoses, and its function is mainly to improve the compressive strength and the steelity of the hose. The hose woven or wound by the dipping wire has the advantages of light and soft pipe body, high bearing strength, good bending performance, and sufficient strength of the wire material as a skeleton material. Therefore, in the design of the hose, the selection of a suitable polyester dipping line as the skeleton material is particularly important for the technical and economic indicators of the hose to meet the user's needs. In the past, when the hoses of China's hose production plants were used to manufacture braided (or wound) hoses, the skeleton materials used were all cotton fibers, such as 21S/4 x 3, 21S/3 X 3, 21S/2 X 3 and other specifications. Because the cotton thread is easy to process and has good adhesion to rubber, it is more commonly used in medium, low and compressed fiber braided (or entangled) hoses. Please indicate the source. Pillow Case
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However, the cotton fiber has a large specific ratio, low strength, light and thick wire, and the outer diameter of the braided (or wound) hose is large, which is bulky compared with the foreign hose product of the same pressure level, and the bearing strength is low, and it is difficult. Entering the international market. As the hose industry continues to evolve, higher demands are placed on the performance of the selected frame materials. Manufacturers are also looking for new fiber materials to replace cotton. 