Grossbottwar, Germany — Lindner Washtech GmbH developed a film examiner for polyethylene film that is placed directly in front of the extrusion phase as a final process to improve product quality.
The device separates small hard contamination particles, which the company says are extremely difficult to remove using traditional methods within the washing line due to their density and size. These particles can include rigid plastic pieces of polypropylene or high density PE as well as light aluminum and small wood flakes.
The film examiner mounts directly in the air stream after the thermal drying process. The company says the system uses the different flow characteristics between small contamination and the light film flakes in order to achieve reliable separation.
The air flow can be adjusted by sliding gates. The separated contamination falls into a collection bin that can be easily monitored and emptied.
Improving output quality is a customer focus, according to Georg Krenn, technical manager of Lindner Washtech.
"The film examiner without doubt provides a compact and inexpensive solution to further improve product quality and reduce operational costs supporting our customer key goals. Retrofitting of existing plants with the film examiner is fast, easy and highly cost-effective," Krenn said in a news release.
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