Twin Screw Extruder
Make sure to have a clear command of the change regulation of two or more polymers and materials in the extruding process, their mixing state, the process of their structural change, and the relationship between final mixtures and their functions.
A model that is helpful for the molding-filling process can be formed by the internal relationship among the reaction process, speed, function of extruding process and twin screw extruder structure, as well as operation condition.
The development of twin screw extruders: it was first invented in 1930s in Italy, while in the late 1960s and early 1970s, it experienced a rapid development. With the development of RPVC products, counter-rotating twin screw extruder came into being; while co-rotating twin screw extruder appeared, companying with the polymer modification. It is useful to study the twin screw extruding theory, because it can not only be applied effectively, but also has become a consensus and a hot research in the world.