Method and apparatus for forming a cellulose article...

Details Method and apparatus for forming a cellulose article... Method and apparatus for forming a cellulose article...

C - Chemistry, Metallurgy

08

J

C08J 5/18 (2006.01) A22C 13/00 (2006.01) B29C 47/00 (2006.01)

Patent

CA 2252340

A method and apparatus is disclosed for forming a cellulose film suitable for direct food contact by precipitation from a solution of cellulose water and a tertiary amine oxide cellulose solvent. After precipitation of a cellulose gel from the solution, the gel is washed at ever increasing temperatures and then dried to provide a cellulose film having a solvent level to not more than 40 ppm. Portions of the wash water is collected and treated to recover the solvent for reuse.

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