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Vulcanized Shoes Production Process

Vulcanized shoes are rubber, fabric or leather for the side, rubber for the substrate, with paste, molded or plastic injection molding processing, and then under a certain temperature and pressure vulcanization, give the upper, soles of high strength and elasticity, and make the two firmly combine, so called vulcanized shoes. The use of curing process leather shoes and vulcanized leather shoes.

Vulcanized shoes Vulcanized sole is vulcanized, after curing this step of rubber products not easy aging cracking, elastic, heat, now the basic rubber products are this kind of rubber, also known as ripe rubber, collectively, rubber or rubber.

The vulcanized shoe is the sport and leisure shoe made from the "Vulcanization method" with the sole and the upper in the form of sulfur. Hardness, the rubber to sulfur treatment, vulcanized shoes on the soles of the rubber and sulfur treatment increase the elasticity of the shoe rubber and hardness, is through vulcanization treatment, not necessarily only canvas shoes, vulcanization treatment is the earliest PUMA invented in 1960.

Advantages of vulcanized Shoe

Vulcanized shoes Fashion, good-looking, with the classic jeans; Dirty is still relatively good care, affordable;

The term "vulcanization" has its historic, because the original natural rubber products with sulfur as cross-linking agent for Cross-linking and the name, with the development of the rubber industry, now can be used in a variety of non-sulfur crosslinking agent cross-linking. Therefore, the more scientific meaning of vulcanization should be "cross-linking" or "bridging", that is, the linear polymer through cross-linking effect of the formation of a mesh of process. It is the process of converting plastic rubber into elastic rubber or hard rubber from physical properties. The meaning of "vulcanization" includes not only the process of the actual cross-linking, but also the method of producing cross-linking.

Through the rubber sense of the strength of the measurement (or vulcanizing meter) can be seen, the entire curing process can be divided into sulfide induction, pre sulfur, positive vulcanization and sulfur (for natural glue is vulcanized back to the original) four phases.

Vulcanized shoes vulcanization induction period (Coke burn time), cross-linking has not begun, gum material has good liquidity. This stage determines the coke burning and processing safety of the glue. At the end of this stage, glue begins to cross-linking and loses liquidity. The length of the curing induction period is related to the properties of the raw rubber, mainly depending on the auxiliary agent used, such as the delay promoter can be used to obtain longer coke burn time, and have higher processing safety.

Vulcanized shoes After curing induction period is the pre vulcanization stage with a certain speed. The crosslinking degree of pre curing period is low, even when the vulcanization strength of the late stage, elasticity can not reach the expected level, but the tear and dynamic RIP performance is better than the corresponding curing.

After reaching the positive curing stage, the various physical properties of vulcanizate are reached or close to the best point, or the overall balance of performance is achieved.

Vulcanized shoes After the curing phase (vulcanized flat area), that is the sulfur phase, there are two cases: natural glue appears "returning to the original" phenomenon (the definite elongation strength drops), most synthetic glue (except butyl gum) The definite extension strength continues to increase.

Vulcanized shoes For any rubber, curing is not only produced cross-linking, but also due to heat and other factors of the role of production chain and molecular chain rupture. This phenomenon permeates the entire vulcanization process. In the sulfur phase, if the cross-linking is still dominant, rubber is hard, the strength of the extension continues to rise, conversely, rubber weak, that is, return to the original.