1. Product cracking

A. Causes:

① The operation method is incorrect.

② The mold structure is unreasonable

③ If the material has poor tearing performance

④ The temperature is too high

B. Countermeasures:

① Train personnel and do the first inspection

② Mold structure, if demolding is difficult, make a block structure

③ Recipe improvement

④ Lower the mold temperature,

2. Product heavy leather

A. Causes:

① The flash was not cleaned during molding

② The product is burned or shrunk seriously

③ The surface of the rubber compound is contaminated / there are two incompatible materials

B. Countermeasures:

① Clean burrs

② Control mold temperature / feeding weight

③ Do rubber control