A solid tire is a composite of rubber and a framework material. The rubber is mainly used in the tread, sidewall, inner liner, carcass, belt and bead. The rubber composition and function of different parts of the tire are different.

According to the formula of different technical requirements, the raw materials such as carbon black, natural/synthetic rubber, oil, silicon, sulfur, plasticizer, accelerator, etc. are mixed together. Under the action of the internal mixer, they are fully mixed and accompanied by a certain amount of The chemical reaction, this process is called "tantra".

　　All raw materials must be tested before entering the internal mixer and can be used after being released. The weight of each pot of the internal mixer is approximately 250 kg. The rubber used for each rubber component in the tire has specific properties. The composition of the rubber compound depends on the performance requirements of the tire. At the same time, the change of the rubber composition also depends on the needs of the supporting manufacturers and the market, which mainly come from the requirements of traction, driving performance, road conditions and the tires themselves. All rubber materials must be tested before entering the next process, and can only enter the next process after being released.

Compared with the rubber open mill, in the rubber mixing process, the mixing time of the internal mixer is short, the production efficiency is high, and the operation is easy. It can well overcome the dust flying, greatly reduce the loss of the compounding agent, and also Reduce the labor intensity of personnel. With the continuous improvement of production technology, rubber internal mixer products are constantly developing and improving.

The mixing process is to uniformly disperse various compounding agents in the rubber to form a rubber-based medium or a mixture of rubber and some compatible components that are compatible with the rubber. The compounding agent is the process of a multiphase colloidal dispersion system of the dispersed phase.