Extruder or calibrating die

Details Extruder or calibrating die Extruder or calibrating die

1985-07-25

1986-06-10

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Control means responsive to product weight or dimension

264 401, 264176R, 264555, 310 26, 310328, 425140, B29C 4792, H01L 4100

Patent

active

045940630

ABSTRACT:
A die for a thermoplastic material with at least one output-gap-defining adjustable die lip, an opposing gap-bounding lip, at least one adjusting element working on the output-gap-defining die lip as well as a control and adjusting device for the thickness of the extruded plastic product, wherein the adjusting element is associated with and operated at least partially by the control and adjusting device. A field translator, either a piezotranslator or a magnetostriction translator, is employed as the adjusting element.

REFERENCES:
patent: 3040221 (1962-06-01), Fitzner
patent: 3940221 (1976-02-01), Nissel
patent: 4016437 (1977-04-01), Calderara et al.
patent: 4126031 (1978-11-01), Ignashev et al.
patent: 4305704 (1981-12-01), Lemelson

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