Multiphase matter introduction with a plasticating screw arrange

Details Multiphase matter introduction with a plasticating screw arrange Multiphase matter introduction with a plasticating screw arrange

1995-08-03

1997-09-23

Timm, Catherine

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

With internal application of fluid pressure

425130, B29C 4500

Patent

active

056701128

ABSTRACT:
The present invention comprises a method for delivering a medium such as a gas, vapor or liquid into a melted plastic in a mold via an elongated screw shaft rotatably supported in a housing, the method including the steps of providing the screw shaft with a bore longitudinally therethrough from a proximal end to a distal tip end thereof, rotating the screw shaft in the housing to move plastic therethrough, and into the mold, introducing a gas, vapor or liquid into the bore, to permit the gas, vapor or liquid to be delivered through the bore, and into the molten plastic in the mold through the distal tip end of the screw shaft.

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Howlicus, Cinpres Patents, Part A Details of U.K. Patents, p. 8, Nov. 2, 1992.

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