Granulators crush scrap pieces of plastic earlier disposed during the plastic’s process. Granulator machinery has not been modified remarkably in recent years and plastic granulators provide a high return on investments. A normal life of a new granulator from a reputable provider is 20+ years. Its life can extend more once properly maintained and cared for. The most valuable consideration when purchasing a granulator is its quality, cost and delivery time.
A plastic granulator is used to recycle or regrind a product. This reground product is then reintroduced into an extruder to be reused or reprocessed.
The granulator consists of four major parts: motor, rotor, cutting chamber, a hopper (feeding into the feed throat). Inside the cutting chamber are a rotor and bed knives. The bed knives are situated on the other sides of a cutting chamber.
When purchasing plastic granulators, consider the size of the feed throat, the number of blades, the style of the rotor, and the horsepower of the motor. An open rotor is normally desirableas it provides a higher production rate. A hog rotor is a drum with many distributed smaller blades on its surface and utilized to handle larger pieces of scrap. The smaller blades create smaller cuts in the scrap and will not ruin the rotor. Another important component of a rotor is the number of blades. Close and opened rotors usually have three blades. So that it optimizes production capacity, two or more bed knives on opposite sides of the cutting chamber is preferable. The discharge is either a blower, bin height, or by drum height. Another granulator feature includes water cooling, hard surfacing inside the cutting chamber and rotor, and the cutting chamber wall and rotor.
Brands include Mitts & Merrill, Rotogran, Condux, Granutec, Entoleter, Alsteele, Wortex, Gloucester, Polymer, Ball & Jewell, Nelmor, Rapid and Cumberland.
When buying plastic granulators consider the type of rotor, capacity, manufacturer, and equipment age. Ensure an adequate blade configuration of the rotor and horsepower for a preferable production rate. Consider whether the process requires the granulator to have additional attributes. The advantages of buying a granulator includes competitive price and immediate delivery.