Cellulose food casing manufacturing method

Details Cellulose food casing manufacturing method Cellulose food casing manufacturing method

1997-03-27

1998-06-16

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Production of continuous or running length

264187, 264203, 2642092, 2642095, 26421111, 264561, 264562, 264563, 425 71, 425380, 425467, B29C 4700, B29C 4720

Patent

active

057665400

ABSTRACT:
The tubular extrusion of a thermoplastic nonderivatized cellulose solution about a mandrel and through a long air gap in excess of 304 mm is facilitated by use of a mandrel which is extensible from the extrusion die. On extrusion start-up, the mandrel extends a short length from the die. For steady-state operation, the mandrel is extended its full length from the die. Also disclosed is a mandrel structure to facilitate the introduction of a nonsolvent liquid into the interior of the extruded tube at a high location on start-up of extrusion and at a lower location during steady-state operation.

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