According to the occurred parts, the bubbles of rubber conveyor belt could be divided into: in cover layer, in canvas layer, between cover layer plastic and cloth.
Bubble production may be specific to one or several of the following exist:
1. The rubber material of rubber conveyor belt failed, such as excessive moisture, low volatile components exceeded the point.
2. Unreasonable means of rubber conveyor belt's storage lead to damp or absorb moisture.
3. Uneven mixing rubber of rubber conveyor belt.
4. The rolling out of the rubber does not heat evenly refining, with not smooth surface; the internal pores of rubber conveyor belt are too many.
5. Over time storage of rubber conveyor belt absorb too much moisture.
Therefore, excessive moisture of raw materials or the existence of low volatile components caused the bubbles of rubber conveyor belt.