Method of making a cellulose food casing including solvent recov

Details Method of making a cellulose food casing including solvent recov Method of making a cellulose food casing including solvent recov

1997-08-12

1999-08-24

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Recycling of reclaimed or purified process material

Of excess fiber or filament

264 3726, 264179, 26421113, 26421119, 264559, B29C 4794

Patent

active

059421673

ABSTRACT:
Disclosed is a method of extruding a solution of cellulose and an amine oxide cellulose solvent as a tube about a sizing mandrel which diametrically stretches the extruded tube. An aqueous poly(ethylene oxide) solution is introduced into the interior of the extruded tube to facilitate passage of the tube over the sizing mandrel and to extract the amine oxide cellulose solvent from the tube. After such extraction, the aqueous poly(ethylene oxide) solution containing the extracted amine oxide cellulose solvent is contacted with an anion exchanger to remove the poly(ethylene oxide) so the amine oxide cellulose solvent can be recovered.

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