Expansion deformable extrusion die blade

Plastic article or earthenware shaping or treating: apparatus – Means providing a shaping orifice

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Details

264 401, 264176R, 425141, 425143, 425144, 425192R, 425379R, 425466, 425381, B29F 304

Patent

active

042819806

ABSTRACT:
A flexible lip die blade is provided in which local flexing of the blade is brought about by activation of heaters located in connector members connecting the flexible lip with the body of the die blade.

REFERENCES:
patent: 2938231 (1960-05-01), Lowey, Jr.
patent: 3261893 (1966-07-01), George et al.
patent: 3767346 (1973-10-01), Mihalik
patent: 3940221 (1976-02-01), Nissel
patent: 3985845 (1976-10-01), Akatsuka et al.
patent: 4003689 (1977-01-01), Harrison et al.
patent: 4055389 (1977-10-01), Hayward
patent: 4125350 (1978-11-01), Brown

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