Production of cellulose films

摘要

A process for the production of a multi-layered cellulose film which comprises co-extruding through a single orifice into a regeneration bath two or more adjacent flows of solutions of cellulose or a cellulose derivative from which cellulose can be regenerated thereby to regenerate the cellulose in the respective flows and produce said multi-layered film, the position at which the respective flows are brought into contact with each other prior to co-extrusion through the single orifice being controlled by an adjustable separator. Apparatus is also provided for carrying out the process. The films produced have particularly high inter-ply strengths.