Plastic crusher, also known as plastic granulators or shredders, are machines used in plastic recycling processes to reduce the size of plastic scraps. They play an important role in processing waste plastics and preparing recyclable materials for further treatment.

Plastic crushers use rotating blades to grind, shred and chop plastic pieces into smaller, uniform fragments. They are designed specifically to process tough and flexible plastic materials that are difficult to break down. Different types include granulators, shear shredder crushers, grinders and pulverizers.

Key components of a plastic crusher include the hopper, rotor assembly with blades, screen or grates, and discharge chute. The plastic enters the hopper and comes into contact with the spinning rotor blades which slice it into particles that fall through the screen below. The end product is plastic chips or flakes of a specified size.

Crushers can process many kinds of plastic waste like PET bottles, jugs, barrels, bags, packaging, plastic pipes, film, wraps and other items. They reduce large plastic objects into uniform smaller pieces for recycling. The size output is determined by rotor speed, screen configuration, and blade design.

Proper use and maintenance is key for plastic crushers. Operators must regularly inspect blade sharpness, screen gaps, wear parts, and electrical components. The equipment must be kept clear of jams and clogs for optimum performance. Well-maintained plastic crushers have a high throughput of scrap plastic and reliably produce uniform chip sizes.

From recycling facilities to manufacturing plants, plastic crushers provide an efficient mechanical means to tear apart tough plastic waste for reprocessing. They enable recycled plastics to re-enter manufacturing streams as a sustainable alternative to virgin plastic. The versatile reduction capabilities of plastic crushers make them indispensable equipment for plastic recycling operations.