Screw for single-screw extruder

Details Screw for single-screw extruder Screw for single-screw extruder

B - Operations, Transporting

29

C

18/733

B29C 47/60 (2006.01) B29C 47/58 (2006.01)

Patent

CA 1276763

ABSTRACT OF THE DISCLOSURE: Screw for a single screw extruder, with a conically shaped feed zone which undergoes transition into a decompression zone which is followed by a compression zone. The compression ratio in the feed zone of the screw is greater than four, with a pitch angle (?1) to the screw line of 15° to 23°, the decompression in the decompression zone amounts to 1.5 to 2.0 and the compression ratio in the compression zone is less than 4.5 with a pitch angle (?2) to the screw line of the screw of 25° to 32°.

506176

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