Natural rubber can be divided into standard rubber (also known as particle glue), smoke film, condensed rubber, white film, light-colored film, rubber clear rubber and air-dry film, etc. The most commonly used are standard glue and smoke film. The standard glue is divided into four grades: SCR5, SCR10, SCR20, and SCR50. Cigarette glue is divided into five grades, namely, No. 1 to No. 5 smoke film (RSS1~RSS5).
The use of rubber has a good overall performance and is widely used. There are: 1 natural rubber. Made from the latex of Hevea brasiliensis, the basic chemical composition is cis-polyisoprene. Good elasticity, high strength, good overall performance.
2 isoprene rubber. The full name is cis-1,4-polyisoprene rubber, a high-cis synthetic rubber made from isoprene, and the special rubber material is also called synthetic natural rubber because its structure and properties are similar to natural rubber.
Rubber molds are used to press metal models of rubber products. The steel is generally produced by mechanical processing according to the requirements of the drawings, and heat-treated to improve its hardness and wear resistance. The mold cavity is the same as the product structure, and the cavity size must take into account the shrinkage of different rubbers, and the size of the product can be enlarged or reduced based on the product size.
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