Can polyurethane (PU) material be molded by injection molding machine?
Injection molding machine more commonly used materials are PP, PA6, PA66, POM
PU according to the hardness can be divided into a variety of, can be injection molding, molding temperature between 170-210. Shoes materials, wheels are used more
Polyurethane is divided into three categories, 1, thermosetting casting (CPU); 2, thermoplastic extrusion (TPU); 3, MPU (mixed type).TPU can be injected with an injection molding machine. CPU and MPU can't be injection molded.
Certainly.Range of melting point of polyurethane 204-232CProcess control temperature 196-232CGeneral polyurethane injection molding temperature 200C, high temperature resistant 250CPolyurethane molding is divided into one step, two steps, and if it is two step molding, that is, the preparation of prepolymer, then injection molding, if it is a one-step method of direct alcohol or fat and the reaction of a unique acid, then the use of casting.
