Filter screen pack for extrusion die

Details Filter screen pack for extrusion die Filter screen pack for extrusion die

B - Operations, Transporting

29

C

B29C 47/68 (2006.01)

Patent

CA 2205450

13 Title: FILTER SCREEN PACK FOR EXTRUSION DIE Abstract of the Disclosure The filter intercepts dirt emanating from a molten-polymer extruder. The filter is clamped between perforated support plates, and a rotor sweeps the holes in the upstream plate. The rotor defines a cavity which communicates with a small sector of the holes at any one time. The cavity is openable to drain, via a valve. The melt is under high pressure, to which the cavity is exposed. The rotor is rotated by means of a drive-shaft, and the drain is located co-axially with the drive-shaft.

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