METHOD FOR MANUFACTURING CELLULOSE FILM, AND FLAT YARN

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a cellulose film industrially by a blow molding method of a cellulose solution using an organic solvent and to provide a method for manufacturing a flat yarn from the cellulose film. SOLUTION: A tertiary amine oxide solution of the cellulose is extruded by an annular slit die 1 to mold a tubular film 4. The method for manufacturing the cellulose film comprises the step of regulating a concentration of a solidified liquid enclosed in a tubular body in this process. The flat yarn is formed by cutting the obtained cellulose film in an extruding direction.