Vulcanization method of extruded rubber seal strip can be divided into discontinuous and continuous vulcanization method.
Discontinuous vulcanization method (After cutting the extruded rubber strip to specific length, then put it into a vulcanizing tank to vulcanize)
Continuous vulcanization method (can be divided into microwave continuous vulcanization method, salt bath continuous vulcanization method, hot air continuous vulcanization method and other methods).
Advantage of Microwave vulcanization?
Microwave continuous vulcanization sealing strip technology is a production technology that was applied and widely promoted after the foreign energy crisis in the 1970s. The microwave continuous vulcanization method can not only produce composite rubber sealing strips made of metal core, solid rubber and sponge rubber, but also can save energy and improve work efficiency than other continuous vulcanization devices. This technology is recognized the best method to produce extruded rubber products. The characteristic of microwave vulcanization is that the heat is directly generated in the object to be heated, instead of being input from the outside as usual. This not only get heat quickly, but also uniformly, which is not only increase the output but also greatly shorten the heating time.
What is salt bath vulcanization?
Salt bath vulcanization is also another method to produce sponge self adhesive rubber strip, it using a salt bath system that containing nitrite, this production technology not only has big environmental pollution, but also waste large water and large salt. They have been gradually eliminated. Currently only D P E I self adhesive rubber seals are still produced by salt bath vulcanization.
