Seal strips are classified by cure

(1) non-continuous curing method (after the length of extruded tape is cut, it is placed in the autoclave, and sulfide is formed in the model of rubber semi-product extruded by sealing strip);

(2) continuous vulcanization method (microwave continuous vulcanization method, salt bath continuous vulcanization method, hot air continuous curing method and other methods).

A. Microwave continuous vulcanization composite seal: microwave curing technology was applied in foreign countries in the 1970s after the energy crisis, and has been widely promoted production technology. Microwave continuous vulcanization production technology including metal core and solid core rubber and sponge material composite rubber belt, sealing strip and in energy, improve efficiency, equipment is better than other continuous vulcanization method. This technology has been used around the world to squeeze the best way to produce products. The characteristic of sealed strip microwave heating is that the object is heated, a bit like regular soldiers from the external input, not only heated and distributed, the heat produced improves the quality of the product, greatly reducing the time required for heating.

B. Continuous sulfide sealed salt bath: the salt bath contains sulfide nitrite bath system, which causes great environmental pollution, and the sealing strip is gradually eliminated.

C. thermal air cure: the hot air sealing sulfur has become wind sulfide type, the use of high temperature, can realize high speed and hot air sulfide (Tmax: 450 ° C and Vmax: 60 m/s), using pretreatment, flame retardant effect, greatly improving the safety at the same time.