UNIT FOR PRODUCTION OF TUBULAR RESIN FILM

摘要

A unit for producing a tubular resin film which is oriented by stretching and has high quality and a uniform thickness and which is favorably usable as retardation film or the like, that is, a unit which is provided with a stretching zone (6) for stretching a tubular resin film (20) and a supporting zone (7) for keeping the shape of the stretched tubular resin film (20) wherein the stretching zone (6) is so constituted as to apply lengthwise and/or circumferential stretching force to the tubular resin film (20).