The replacement of metals in rubber metal combinations through suitable plastics has, in addition to the reduction of weight, 2 further advantages. On the one hand plastics do not corrode, on the other hand also complex plastic parts can be rationally produced through injection moulding.
Plastics are usually degreased similar to metals and mechanically prepared, as well as coated with an adhesive agent. The thermoplastics used for the production of rubber plastic combinations must be dimensionally stable with the applied vulcanization temperatures of 160 – 200°C. Otherwise with the production of moulded parts there is a demouldation of the plastic part.
In exceptional cases also a steadily adhesive rubber plastic combination without the use of adhesion agents is possible. This requires however very special rubber thermoplastic combinations.