Method and apparatus for use in manufacture of cellulose casing

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 47/20 (2006.01) B29C 47/00 (2006.01) B29C 47/90 (2006.01) B29D 23/00 (2006.01)

Patent

CA 2358016

Disclosed is a mandrel structure for extruding a tube composed of a nonderivatized cellulose. The mandrel includes a hollow sizing portion having openings which gather gas bubbles that may evolve at the interface between the extruded tube and the sizing portion and allows the gas to pass into the hollow interior of the mandrel. Improved nonderivatized extruded tubes that are used as casings with improved peeling characteristics are also disclosed.

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