Extrusion: Go from Fluff to Blown Film With Twin-Screw System
System bypasses pelletizing step and can reprocess barrier films.
Reifenhauser has taken its EVO Fusion twin screw technology typically deployed in its non-woven and sheet ´óÏó´«Ã½ units and adapted it for blown film. This allows barrier and other types of films to be reprocessed directly into blown film, bypassing the pelletizing step and eliminating a heat history.
The twin-screw extruder is equipped with a degassing unit to extract impurities and contaminants to reduce the risk of gel formation. With this technology, film processors reportedly can recycle conventional barrier film, such as PE/nylon structures with up to 30% nylon content, allowing them to reuse old barrier film or production scrap to obtain valuable raw materials and produce other high-quality films, such as industrial packaging, sacks, construction film or agricultural film. EVO Fusion allows direct extrusion and requires no pre-processing.
Related Content
-
Troubleshooting Screw and Barrel Wear in Extrusion
Extruder screws and barrels will wear over time. If you are seeing a reduction in specific rate and higher discharge temperatures, wear is the likely culprit.
-
Understanding Melting in Single-Screw Extruders
You can better visualize the melting process by “flipping” the observation point so the barrel appears to be turning clockwise around a stationary screw.
-
Why Are There No 'Universal' Screws for All Polymers?
There’s a simple answer: Because all plastics are not the same.
