Application of polyester fiber to rubber conveyor belt

Fabric material used by rubber conveyor belt can be divided into two major types—metal and fiber—in terms of texture. The development of a conveyor belt can do without improvement of fabric material performance. Strength, stretching characteristic, toughness and dimensional stability of the conveyor belt is closely related to the fabric material.

Fiber fabric materials used by conveyor belt mainly are: cotton, polyester, chinlon 6, chinlon 66 and aramid fiber, and other fiber materials are not commonly used.

Cotton fiber, with medium breaking strength, is applicable to produce bottom-weight fabrics with not high strength. As hairiness exists in cotton fiber, it has favorable mechanical adhesive force with rubber, and then fabric material may not go through dipping treatment.

However as natural fiber, price of cotton fiber is high with not high-cost performance; polyamide fiber is of high breaking strength and elasticity, but its modulus is small, and it can extend through creep deformation, so it has been usually used on occasions with short-haul distance, large safety factor and high requirement for elasticity, and chinlon can take its full advantages of low modulus and good trough ability mostly as weft in polyester/polyamide blend-dipping process; polyester fiber is of high breaking strength and high modulus, it will not easily extend through creep deformation, it is the material with the highest strength and best cost performance among all fiber materials at present, so it has been applied to conveyor belt the most extensively.

With favorable weather-proof performance, polyester will not easily be corroded as steel wire or easily be rotted as cotton yarn, in the meantime, it can resist solarization and acid rain, so it is a kind of very ideal material; aramid fiber is of high breaking strength, but it can’t resist compression and dynamic fatigue with high price, and it is limited to a certain degree in application to conveyor belt.

Conveyor belt structure