Closed rubber mixing machine referred to as mixing machine, mainly used for rubber plasticizing and mixing. Mixer is a kind of machine with a pair of specific shape and relative rotation of the rotor, in the closed state of adjustable temperature and pressure clearance of polymer material plasticizing and mixing, mainly by mixing chamber, rotor, rotor sealing device, charging and pressing device, discharge device, transmission device and frame and other parts.

The mixer is a kind of high strength interstitial mixing equipment developed on the basis of the open mixer. Since the emergence of the real sense of Banbury (Benbury) type mixer in 1916, the power of the mixer has gradually been recognized by people, it shows a series of characteristics in the rubber mixing process than the open mixer, such as: mixing capacity, short time, high production efficiency; Better overcome dust flying, reduce the loss of additives, improve product quality and working environment; Safe and convenient operation, reduce labor intensity; It is beneficial to realize mechanical and automatic operation. Therefore, the emergence of the mixer is an important achievement of rubber machinery, and it is still a typical important equipment for plasticizing and mixing, and it is still being continuously developed and improved.