The GF Series grinders from Process Control Corporation are used as part of an asr® Automatic Scrap Recycling system for in-line recycling of production film scrap. GF Series grinders are designed to provide efficient, uniform grinding of film scrap. There are four cutting chamber sizes available along with different horsepower motors to accurately match the grinder to the required scrap rate. The GF Series grinders are available in configurations that accept edge and bleed trims, roll scrap, and loose scrap.
Standard carbide-coated knives are employed in the system, increasing the time between sharpening. The rotor knives approach the stationary bed knife, or knives, at a steep angle to ensure a clean scissors-cut. This technique is used for maximum bulk-density and flow of ground scrap. The open rotor design improves airflow for cooling , permitting the highest possible throughput.
After the cutting chamber, material passes through a sizing screen that is chosen specifically for the application and material. The ground scrap is pulled through the grinder screen and carried through the process by the scrap conveying fan standard on each GF Series grinder.
Reintroduction of roll scrap is achieved with the attachment of an optional RN Series roll feeder. The roll feeder has knurled rolls that provide a strong pull on the film, without wrapping. They are available in several sizes with variable speed DC motors that run at 3 - 32 fpm (1 - 10 m/min).
The control panel for the grinders includes a motor starter for the grinder. When purchased as part of a complete asr® system, the control panel includes controls for the inducers and roll feeder, as well.
- ODP motor with 4-sided belt guard (TEFC motor on GFB)
- Open rotor cutting chamber with outboard bearings
- 2 HP scrap conveying fan (5 HP on GFD)
- Mild steel construction
- Carbide-coated knives
- Remote-mount control panel
- Electricals: Power requirements 460V/3PH/60Hz
- Special paint
- Special electricals
- Hydraulic lift for opening cutting chamber (not available on GFA or GFB, standard on GFD)
- Sound enclosure
- AEN air eliminator separates conveying air from edge trims
- RF Series roll feeder
There are (2) different version of the GFA Series grinder.
The GFA with Air Bypass is designed to handle edge and/or bleed trims only. This design utilizes a 5 HP fluff conveying fan for both inducing the trims into the grinder cutting chamber and for blowing the ground fluff out of the grinder. There is no need for a separate trim removal inducer or air eliminator.
The second version is for handling both trims and off-spec roll scrap. This design does require a separate inducer, eliminator and roll feeder and utilizes a 2 HP fluff conveying fan to blow the ground scrap. Both versions are designed with a single stationary knife and (2) rotating knives.
The standard knives are carbide coated to promote long life.
Optional AEN air eliminator separates conveying air from edge trims.
Optional RF Series Roll Feeder