Flat film extrusion nozzle

Details Flat film extrusion nozzle Flat film extrusion nozzle

1975-07-29

1977-06-14

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Means providing a shaping orifice

Adjustable shaping orifice or shape imparting insert member

425381, B29F 304

Patent

active

040294609

ABSTRACT:
A film extrusion apparatus or nozzle which includes a pair of oppositely disposed, spaced elongated blades which together define an extrusion orifice of generally uniform width. At least one of such blades is slotted to impart limited flexibility to an exposed terminal corner portion thereof which assists in defining an end of the extrusion orifice. Means are provided for selectively deflecting the exposed, flexible corner portion of the one blade to thereby vary the width of the extrusion orifice along the end thereof.

REFERENCES:
patent: 2712155 (1955-07-01), Nelson
patent: 2963741 (1960-12-01), Longstreth et al.
patent: 3162896 (1964-12-01), Seubert
patent: 3255488 (1966-06-01), Waldherr
patent: 3377655 (1968-04-01), Kucharski et al.
patent: 3461501 (1969-08-01), Stewart
patent: 3761553 (1973-09-01), Richardson

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