Our plastic sanitary items manufacturer process is unique. Vision Plastics use different critical criteria to achieve a homogenous blend of the different raw material. Dispersive and distributive mixing as well as heat are important factors.
Compounding is usually done by extrusion. The hopper feeds the begin of the screw which will gradually transport the resins towards the die. The screw itself is confined in a barrel that has different zones that can be heated according to the resins properties.
Co-kneaders and twin screws (co- and counter rotating) as well internal mixers are the most common used compounders in the plastic industry.
The extrudate, which look like long plastic strands, are then cooled in a water bath, or by spraying as the conveyor belt moves it to the granulator. The granulator breaks the strands into the desired pellet sizes