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Vulcanized shoes production process

Vulcanized shoes production process

Industry news
2019/05/27 15:52
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Vulcanized rubber soles are vulcanized rubber, vulcanized this step of the rubber products are not easy to crack, good elasticity, heat resistance, and now the rubber products are basically this kind of rubber....

Vulcanized shoes is to use a sole and a vamp to add sulfur cohesion made of "curing" sports shoes (in order to strengthen the elasticity, hardness, the rubber with sulfur vulcanization treatment), vulcanized shoes in the soles of rubber with sulfur treatment increase the elasticity and hardness of rubber shoes, is processed by vulcanization.

"Curing" has its historical nature, because of the initial natural rubber products with sulfur as the crosslinking agent for crosslinking, with the development of the rubber industry, can now be used with a variety of non sulfur cross linked agent for crosslinking. Therefore vulcanized more scientific meaning should be "crosslinking" or "bridging", namely linear polymer by crosslinking formed polymer mesh process. The property that is plastic rubber into elastic rubber or hard rubber. The meaning of "curing" includes not only the actual crosslinking process, but also the method of producing cross linking.

Through the glue material tensile strength (or instrument sulfide) measurements can be seen, the whole vulcanization process can be divided into sulfide induced, pre sulfur, vulcanization and sulfur (for natural rubber is vulcanized back to the original four stages.

Curing induction period (char burn time), the crosslinking has not yet started, the gel has good mobility. This phase determines the coke burning and processing safety. At the end of this phase, the gel begins to cross link and loses its fluidity. Sulfide induced duration with the exception of the rubber properties, depending on the auxiliary, such as delayed accelerant can get longer scorch time, and has high processing safety.

After the curing period, the curing stage is carried out at a certain speed. Pre vulcanization crosslink degree is low, even late vulcanizate tensile strength, elastic cannot reach the desired level, but dynamic tearing and tear performance but than the corresponding vulcanization.

Arrival is after the curing process, and the physical properties of vulcanizate were at or near the optimum point, or achieve the balance of properties of the composite.

Is after curing stage (sulfide flat area), namely for sulfur phases, there are two cases: natural rubber "back" phenomenon (tensile strength decreased), most synthetic rubber (except for the butyl rubber) constant tensile strength continues to increase.
For any rubber, it is not only a crosslinking, but also due to the heat and other factors of the production chain and the chain of the chain. This phenomenon runs through the whole curing process. In sulfur phases, if the crosslinking reaction is still dominant, rubber on the hair hard, tensile strength continues to rise. On the contrary, rubber weak, the reversion.


Baixi Industrial Area, Chengnan Town, Wenling City, Zhejiang, China