Process for extruding polymer shapes with smooth, unbroken...

Details Process for extruding polymer shapes with smooth, unbroken... Process for extruding polymer shapes with smooth, unbroken...

B - Operations, Transporting

29

C

B29C 47/00 (2006.01)

Patent

CA 2044536

- 26 - ABSTRACT A solid state extrusion process extrudes a semi- crystalling polymer billet through a die at the end of a pressure chamber. The temperature of the die is controlled so that a thin surface layer of the polymer profile being extruded is melted to form a thin, smooth surface layer on the profile of reduced orientation and increased toughness and which is substantially free of surface imperfections. F501\A45039\mc

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