Extrusion tool

Details Extrusion tool Extrusion tool

1978-06-26

1979-08-07

Schulz, William E.

Plastic article or earthenware shaping or treating: apparatus

Means providing a shaping orifice

264176R, 425192R, B29C 2300

Patent

active

041636414

ABSTRACT:
An extrusion tool consisting of a stack of thin metal wafers in which apertures have been machined by chemical etching. Each wafer has one or several apertures. For simple profiles the wafers are identical. The apertures in adjacent wafers are angularly offset one with respect of the other for helical extrusion.

REFERENCES:
patent: 3632279 (1972-01-01), Christy et al.
patent: 3825456 (1974-07-01), Weber et al.
patent: 3924988 (1975-12-01), Hodge
patent: 4090828 (1978-05-01), Renegar

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