Patents
United States Patent 5250249
Douris , ê et al. October 5, 1993
Extrusion apparatus and methods of extrusion
Garner October 5, 1993
Abstract
Extrusion apparatus and a method of extruding in which an extrusion screw terminates close to a breaker plate so that an annular passage surrounding the screw extends to the breaker plate. The breaker plate has flow apertures arranged around an edge region of the plate for direct communication with the annular passage. The flow passage arrangement decreases in cross-sectional area in a downstream direction whereby plastics materials do not become static in certain regions. Plastics degradation, particularly for PVC, is therefore avoided.
Feed Screws
Barrels
Augers
Static Mixers
Wear Measuring Devices
- Manufactured
- Rebuild
- Repaired
- Designed
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