Axially movable cluster conduits for plastic processing in a scr

Details Axially movable cluster conduits for plastic processing in a scr Axially movable cluster conduits for plastic processing in a scr

1996-12-30

1998-04-28

Timm, Catherine

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

With internal application of fluid pressure

264 451, 264241, 264255, 26427211, 26427218, 264279, 26417113, 26417114, 425113, 4251311, 4251331, 425130, 4253791, 425381, B29C 4500

Patent

active

057440921

ABSTRACT:
The invention comprises a plasticating machine for the working and forcing of plastic material into a mold, said machine including an elongated housing having a first or proximal end and a second or distal end, an elongated screw shaft with a screw flight therearound, the screw shaft being rotatably supported in the elongated housing, for the working of plastic between the screw shaft and the elongated housing with at least one delivery conduit generally longitudinally arranged through the screw shaft, from a proximal end to a distal tip end thereof. The conduit may be arranged to be movable with respect to the screw shaft to permit delivery of a medium through the screw shaft to any plastic being driven from the machine. The medium may be any single or combination of components selected from the group comprising vapor, liquid, gas, powder or solid, to control the machine or treat any plastic being driven therefrom.

REFERENCES:
patent: 3387331 (1968-06-01), Billings
patent: 3566753 (1971-03-01), Mantke
patent: 3694424 (1972-09-01), Hunkar et al.
patent: 4174935 (1979-11-01), Driskill
patent: 4302409 (1981-11-01), Miller et al.
patent: 4770624 (1988-09-01), Ziegler
patent: 4859068 (1989-08-01), Sironi
patent: 5064364 (1991-11-01), Muller-Erwig
patent: 5078948 (1992-01-01), Troutman
patent: 5098267 (1992-03-01), Cheng

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