1. Cooling: After the compounded rubber is pressed into tablets, the temperature of the rubber compound is about 100℃. If it is not cooled in time, ① the rubber compound is easy to scorch, and ② it is easy to cause adhesion during the parking process. The cooling method of our factory is to stick the release agent liquid evenly on the surface of the rubber material through the release agent pool after the film is unloaded in the open mill, and then immediately pick up the piece and hang it up and air-cool it to make the temperature drop below 40℃. Stacking into storage. 
2. Parking: After cooling, the rubber compound generally needs to be parked for more than 8 hours before it can be used. The purpose is: ① to restore the rubber compound to fatigue, to relax the mechanical stress during mixing and to reduce the rubber compound shrinkage; ② during the parking process, the compounding agent is in the rubber compound. It can continue to diffuse in the material, improving the uniformity of dispersion, and at the same time, it can further generate bonded rubber between the rubber and carbon black, and improve the reinforcing effect. 
3. Filter rubber: Some rubber materials (such as inner tubes) for products with thin walls and good air tightness requirements should be filtered to remove impurities that may be brought in during compounding. There are 30 and 40 mesh filters for inner tube filtration in our factory. The filtered rubber is strictly prohibited from landing and stepping on the seat. The impurities filtered out during filtration should be stored in a designated location, cleaned up and taken away after get off work, and should not be thrown away casually.