Plastic compounding

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Compounding consists in preparing plastic formulations, by mixing or/and blending polymers and additives in a molten state. There are different critical criteria to achieve a homogenous blend of the different raw material. Dispersive and the distributive mixing as well as heat are important factors. Ko-Kneaders and twin screws (co- and counter rotating) as well internal mixers are the most common used compounder in the plastic industries.