Pressing out process is through pressing out machine cylinder wall and the role of screw parts, so that the rubber material to achieve the purpose of extrusion and preliminary modeling, pressing out process is also known as the extrusion process. The main equipment of the pressing process is the pressing machine. Several kinds of rubber pressing characteristics:

Natural rubber pressing speed, semi - finished shrinkage rate is small. Body temperature 50-60℃, nose 70-80℃, mouth 80-90℃;

Styrene butadiene rubber pressing speed is slow, compression deformation is large, the surface is rough, body temperature 50-70℃, nose temperature 70-80℃, mouth temperature 100-105℃;

Neoprene rubber is not fully heated before pressing out, body temperature is 50℃, mouth type 70℃;

Ethylene-propylene rubber pressing speed, small shrinkage, body temperature 60-70℃, nose temperature 80-130℃, mouth 90-140℃.

Nitrile butadiene rubber pressing performance is poor, pressing should be fully hot refining. Fuselage temperature 50-60℃, nose temperature 70-80℃.

The above is about the pressing process, the related finishing of the extrusion process, I hope you have a deeper understanding of the pressing process, extrusion process. Details of extrusion process and extrusion process _ all kinds of rubber in the characteristics of extrusion attention