In underground mining, conveying the creep lengthening with skeleton materials with low is very important. This is because for underground space is limited, can not be equipped with large tensioning device for power leveling, high-speed operation of the belt

The belt body temperature tends to increase, under high temperature, therefore, how to maintain its enough tension, especially important.

The conveyor belt is often used outdoors, so in outdoor environment moisture of skeleton material creep elongation, also have serious consequences: cotton fibers standard backtracking rate is 4.5%, cotton yarn and polyester only in 8%.

Only 0.3%. The skeleton material after water absorption, water as a plasticizer, can the material becomes easy elongation, modulus decrease. Elongation larger. Apparently little water absorbing material is more stable.

Water will cause the adhesive interface of rubber and skeleton material, adhesive and RFL decreased interfacial strength between the resin layer and fiber materials are impregnated, resulting in decreased peel strength between layers, of transport

The service life of the belt feeding.