1. Choose mold material according to recycled rubber varieties

At present, in the rubber products industry, rubber moulds are mainly metal materials; Due to the different material corrosion resistance of different mould, different varieties of renewable rubber products and rubber compound and the effects of mould and different, so when choosing reclaimed rubber mold, must according to the reclaimed rubber, collagen, and the performance characteristics of chelating agent, choose appropriate materials reclaimed rubber mold, Avoid mold corrosion caused by mold pollution problems.

2. Strictly calculate the mold accuracy and size

The surface of the recycled rubber mould is not smooth and the structure design of the mould is not reasonable, which will lead to the deposition of local rubber material and cause serious mould pollution. Therefore, when using recycled rubber to produce rubber products, we must choose to strictly calculate the mold size according to the size of recycled rubber products and combined with the shrinkage of rubber material, improve the processing accuracy and surface smoothness of the mold, and reduce the probability of pollution of the recycled rubber mold.

3. Use acid absorbing substances in the formula of recycled rubber products

Metal materials are the main raw materials of rubber moulds, and metal materials themselves are easily corroded. Even a small amount of acidic substances generated during the production of recycled rubber products will corrode the moulds and cause mould pollution. Therefore, when designing the formula of recycled rubber products, acid absorbing materials that can absorb acid substances should be used appropriately, and vacuumized when necessary to avoid acid corrosion of the mold. In addition to acidic substances, if the production process produces corrosion of the mold ions will also cause mold corrosion, the design of recycled rubber products formula needs to consider whether the interaction between various coordination agents will produce this kind of ion corrosion mold.

4. Process or coat the surface of the recycled rubber mold

In the production process of recycled rubber, if the affinity between rubber material and mold is particularly strong, it usually causes serious mold pollution. At this time, we must look back to consider the characteristics of recycled rubber and mold material. If the mold material can not be replaced, then the surface of the recycled rubber mold can be treated or the inert coating can be directly increased to reduce the affinity between the rubber material and the mold and improve the mold pollution.