Differences between open mill and internal mixer

The open mill is a double roll mill, which uses the shear force generated by two rolls moving relative to each other at different speeds to produce plastic. In the process of operation, it is necessary to conduct triangle wrapping or curling operations on the rubber material continuously.

The internal mixer uses the regular shrinkage of the space generated by the internal designed blade relative motion to generate the shear force, without manual operation and labor saving.

The open mill is simple in structure and low in cost, but it is labor-intensive, polluting and harmful to workers.

Internal mixer is more expensive, but it can be heated, and pressurized internal mixer can be used to deal with materials that are difficult to plasticize. Low labor intensity and strong adaptability.

Internal mixer is a kind of high strength intermittent mixing equipment developed on the basis of open mill. Therefore, the emergence of internal mixer is an important achievement of rubber machinery, which is still a typical important equipment for plastic refining and mixing, and is still developing and improving.

Kneader is a device that makes semi dry or rubber like viscous plastic materials react quickly to obtain uniform mixing and stirring due to strong shearing action generated by a pair of matched and rotating blades (usually in Z-shape). It is an ideal equipment for mixing, kneading, crushing, dispersing and re polymerizing various high viscosity elastoplastic materials. It has the advantages of uniform mixing, no dead angle and high kneading efficiency. It is widely used in high viscosity sealant, silicone rubber, neutral acid glass glue, chewing gum, bubble gum, pulp, cellulose, and also in batteries, inks, pigments, dyes, medicine, resins, plastics, rubber Cosmetics and other industries.