Blends are mixtures of different polymers which do not form any copolymers. bilden. The different polymer types are present in a blend without any chemical reaction, but also without phase separation. Often, new materials with favourable propertied can be created by blending different plastics neue Werkstoffe mit günstigen Eigenschaften herstellen. As a precondition, the polymers must be compatible, able to form homogeneous blends, and must not separate during processing.