Plastic granulators are large, shredder-like machines found primarily in the plastics industry. They are used to break plastic products down so they can be recycled. It is no secret that plastic trash such as bottles, bags, packaging, and other plastic products represent as much as 40% of the solid waste that goes into our landfills. It is also no secret that plastic is not biodegradable – meaning it does not break down naturally to become part of the earth and may subsist for thousands of years.

How Plastic Granulators Operate

To help alleviate this problem, plastic granulators operate much like large shredders. They take in plastic bottles, jugs, and other plastic products and grind them down into flakes. The resulting plastic-flake product created by plastic granulators is later sold to molders and manufacturers of plastic products as recycled raw material, where it can be used to make new plastic items.

Plastic granulators are comprised of:

  • A large electric motor that turns a rotor
  • Cutting blades are attached to the rotor
  • These blades are available in a diverse array of shapes and sizes
  • When used plastic material is placed inside the chamber, the rotating blades shred it into granules.

Additionally, a screen is placed inside. This screen acts as a sifter, making sure the plastic is small enough to be useful on the open market. Plastic pieces too large to be sold - more than .125 to .375 inches (0.318 to 0.953 centimeters) - are caught by the sifter and reprocessed until they are small enough.

How Plastic Granulators are Rated

Plastic granulators are rated by pounds per hour. This is a simple calculation: how much it can shred within one hour. For industrial recyclers, the chamber of the plastic granulator needs to be large. It's feasible to purchase a plastic granulator for home use for those hobby folk who may have need of one. WARNING: These machines can be a dangerous!

Plastic Granulator Maintenance

Plastic Granulators must be kept clean - this requires regular maintenance on the part of the owner. An inability to clean the machines properly will result in an increase of plastic left overs too large to be resold. Naturally,the blades of the plastic granulator must be oiled. Finally, the inside of the chamber needs to be wiped clean.