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United States Patent 6153093
Douris , ê et al. November 28, 2000

Filter screen pack for extrusion die

Bentivoglio November 28, 2000

Abstract

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 a drive-shaft, and the drain is located co-axially with the drive-shaft.

 

 

 

 

 

 

 

 

 

 




Feed Screws
Barrels
Augers
Static Mixers
Wear Measuring Devices
  • Manufactured
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