Regranulators are used as plastic recycling machines. Process starts with a grinder which is a rotor knife mill designed to take larger components of feed stock (such as plastics film, bottles, etc…) and reduce them to a flake or particle size. These flakes are fed in an extruder which melts material and re shapes it into a granular form. Regranulators are used to recycle various type of polymers: PE, PP, PET, PS and others.