XPA toothed V-beltIt is generally composed of a wrapping layer, a stretching layer (top adhesive), a strong layer (tensile layer), and a compression layer (bottom adhesive). The functions of different parts of the V-belt are as follows:

　　

1. The wrapping layer is composed of plain weave rubber canvas (mainly cotton canvas and polyester cotton canvas) cut at a 45 ° angle, which has excellent elasticity and friction, can connect various parts into a whole, protect other parts from wear and erosion, and increase the stiffness of the V-belt.

　　

2. Stretch adhesive layer, which is composed of rubber material with high elasticity and excellent stretching performance, can withstand the tensile stress of V-belt during operation and bending, and play a buffering and protective role for the strong layer.

　　

3. The strong layer is the skeleton of the V-belt, mainly consisting of polyester rope, polyester tempered brown wire, aramid rope, and impregnated curtain fabric. Its function is to withstand the tensile and other stresses generated by the V-belt during operation, and it is the main force bearing part in the V-belt transmission process.

　　

4. Buffer adhesive, a triangular belt with polyester tempered brown ribbon core or wire rope core, has a layer of adhesive material with good adhesion strength to the core around the strong layer, which is called buffer adhesive. It plays a role in fixing the core and can absorb the dynamic shear stress generated by frequent deformation of the triangular belt during high-speed operation.

　　

5. Compressed rubber layer is composed of rubber material with excellent bending fatigue resistance, which can withstand the compressive stress generated by the bending of the V-belt during operation, maintain the stiffness and elasticity of the V-belt, and increase the cross-section of the V-belt and the friction contact surface with the pulley, thereby improving transmission efficiency. Due to the different functions of different parts, the rubber formula used is also different.

　　

XPA toothed triangle has two types of special core structure and rope core structure, which are composed of four parts: wrapping, top glue, tensile body, and bottom glue. The triangular belt with rope core structure is easy to manufacture, has average tensile strength, and is widely used. The triangular belt with special core structure has good toughness and high strength, and is suitable for situations with high rotational speed.