Here is the second part of last week’s post on the completed ASR system. Shown below are pictures of the 100HP GF Series film grinder that has been equipped with a roll feed allowing additional scrap to enter the system. An air eliminator (not pictured) has also been made to separate the conveying air from the edge trims.
PCC recently shipped the largest order of ASR Automatic Scrap Recycling Equipment, in recent history, to Germany. The order includes multiple cutting chambers for GF Series grinders as well as RMX refeed machines.
Cutting Chambers for GF Series Film Grinders
In the cutting chambers, standard carbide-coated knives are employed, 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.
RMX Series Refeed Machines
The unique, double-compartment RMX Series Refeed Machine operates with a variable-speed auger/bridge-breaker assembly to compact and meter ground scrap from the inner hopper to the throat of the production extruder. The outer compartment contains virgin material which is gravity-fed to the throat. The virgin material completely surrounds the ground scrap as it enters the extruder. The extruder screw receives a consistent column of compacted ground scrap surrounded by virgin material. This method provides consistent operation without extruder surging or starvation. With the standard extruder follower circuit, refeed machine will increase or decrease the scrap rate in proportion to the extruder speed. This holds scrap percentage constant without additional operator attention.
In today’s entry, we would like to highlight the features of our GF Series Film Grinder for automatic scrap recycling applications.
GF Series Film Grinder with Roll Feeder and Air Eliminator
The GF Series grinders from PCC are used as part of an ASR Automatic Scrap Recycling system for in-line recycling of production film scrap. GF grinders are designed to provide efficient, uniform grinding o film scrap. There are four cutting chamber sizes available along with different horsepower motors to accurately match the grinder to the scrap rate. Grinders are available in configurations that accept edge and bleed trims, roll scrap, and loose scrap.
Film Grinder Cutting Chamber
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 scissor 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.