This plastic crusher is a callback equipment of waster and old plastic, suitable for the crushing and granulation of injection runner of engineering plastics' scrap and inferior, and is suitable for crushing various plastic doors and windows, decoration boards and foam plastics, or crushing and granulation of plastic pipes and special-shaped materials either. Adopt sound insulation device, with little noise. The power adopts demountable blades, which can be removed and grinded after dulling; Suitable for crushing vast soft, hard and foam plastics.