Cellulose extrusion

Details Cellulose extrusion Cellulose extrusion

2006-05-02

2006-05-02

Del Sole, Joseph S. (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Immersed shaping orifice discharging directly into liquid...

Means directing product through tubular conduit within bath...

C425S071000, C425S326100, C425S392000

Reexamination Certificate

active

07037096

ABSTRACT:
Apparatus for the production of extruded blown cellulose film from a solution of cellulose, water and an amine-oxide, which includes:—extrusion apparatus for continuously extruding a cellulose solution to produce a cellulose film;—solidifying apparatus for solidifying the extruded cellulose film;—drawing apparatus positioned downstream of the extrusion apparatus for continuously drawing the extruded cellulose film from the extrusion apparatus; and a tubular member for containing precipitation apparatus and for receiving an extruded blown film wherein the tubular member is situated within a precipitation bath. The invention also includes a method of extruding blown film.

REFERENCES:
patent: 1654253 (1927-12-01), Blades
patent: 3725519 (1973-04-01), Seifried et al.
patent: 3767756 (1973-10-01), Henderson
patent: 3778205 (1973-12-01), Turner et al.
patent: 4750873 (1988-06-01), Loe et al.
patent: 4939235 (1990-07-01), Harvey et al.
patent: 0 483 562 (1991-10-01), None

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