Discover Gorillabelt, Cofit’s most powerful screen changer for post consumer recycled plastic. It ensures uninterrupted production, low polymer loss, and exceptional filtration, even with highly and different contaminated materials.
The molten material is conveyed by an extruder through the filter screen. Losses of molten material are totally prevented by a pair of wedges that seal the passage openings of the screen..
The impurities contained in the extrudate accumulate on the surface of the screen causing an increase in pressure upstream of the filter. When the differential between the inlet and outlet melt pressure exceeds the set threshold, or alternatively the preset timer value has elapsed, a dedicated valve closes the melt flow channel and both sealing wedges move to allow the progress of the filter screen. The contaminated section of the screen is then replaced with a clean one.
Look at the video to see GorillaBelt in action.
During filter replacement, the extrusion cycle is not interrupted: the extruder continues to convey the molten material into an accumulator cylinder. As soon as the clean filter section is positioned correctly, the sealing wedges close again and the unit is sealed again. The inlet valve opens and the accumulator cylinder slowly pushes the accumulated melt into the flow channel. As soon as the accumulator cylinder has completed the return stroke to the initial position, the screen change cycle is completed.
With GorillaBelt your production line can be improved in multiple aspects:
In secondary plastics recycling and re-pelletizing, impurity filtering is playing an increasingly important role. The quality of the filtering process determines the quality level of the final recycled material, its scope and fields of application, as well its price on the market.
The GorillaBelt screen changer can be employed for filtering highly contaminated plastic materials, e.g. agricultural or building films and post-consumer materials.
GorillaBelt filtering system involves automatic replacement of clean and fresh filtering screen at every change. Even with the most contaminated materials, GorillaBelt screen changer ensures several filtering screen changes. Screen changing process takes less than two minutes.
Material waste is reduced to minimum. Due to the special GorillaBelt screen changer technology and design, only dirt, impurities and plastics, sticking onto the filtering screen surface are discarded – a remarkable advantage to be considered as waste disposal costs are elevated
The key strength of GorillaBelt screen changer lies in its automatic operation. Based on programmable setups, operation of GorillaBelt screen changer does not require any operator intervention, except for screen belt replacement (the belt is approx. 50m long). The screen belt replacement interval depends on the level of impurities in the filtered material. Filtering belt replacement takes approx. 10 minutes.
Processing: |
Automatic |
Type of material: |
Steel |
Filtering area: |
up to 900 cm² |
Heaters: |
Armored – Ceramic |
Material contamination: |
Very High |
Operating Temperature contamination: |
Up to 350°C (662°F) |
Pressure contamination: |
Up to 200 bar (2.900 psi) |
Hourly capacity: |
Up to 2.000 Kg (4.400 pounds) |
Polymers: |
HDPE, LDPE, LLDPE, PP, ABS, PS, and more |
Products and Applications: |
Pelletized product for film grade too |
Watch a 3D animation with detailed explanations of GorillaBelt internal operation
Watch a double GorillaBelt installation running PE flakes
Cofit deals with research, engineering, manufacture and distribution of automatic and continuous screen changers for post-consumer and post-industrial recycling materials, too.
Contact us to test your materials with our screen changers, download 3D schemes of our products, contact us to upgrade your extrusion system, ask us for more info about any product; follow us on Linkedin and Twitter.
