B - Operations – Transporting – 28 – B
Patent
B - Operations, Transporting
28
B
18/722
B28B 11/16 (2006.01) B26F 3/00 (2006.01) B29B 9/06 (2006.01) B29C 47/08 (2006.01)
Patent
CA 1319477
In an apparatus for producing particles of thermoplastic material by extruding material in a plastic state through orifices in a die plate and thereafter cutting the extruded plastic material into crumb upon exit from the orifices, an air supply is coupled to a cutting chamber for providing a stream of air across the face of the die plate to cut and convey the crumb away from the orifices. The cutting chamber is arranged to include a restricted throat having an exit area in close proximity to the orifices and a further portion for providing an accumulation zone adjacent the orifices, the accumulation zone having a cross-sectional area which increases from the exit area of the throat to a product discharge zone remote from the orifices in a downstream direction.
605366
Borden Ladner Gervais Llp
Exxon Chemical Patents Inc.
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