Cellulose extrusion
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United States of America Patent
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May 2, 2006
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N/A
app pub date -
Oct 18, 1999
filing date -
Oct 21, 1998
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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.
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