MANUFACTURING METHOD FOR BIAXIALLY ORIENTED POLYESTER FILM

• Main Authors: HARUTA MASAYUKI, SUGIMOTO MASANORI, HAMANO AKITO, FURUTA OSAMU
• Format: Patent
• Language: English
• Published: 15.10.2002
• Edition: 7
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a manufacturing method which relates to an effective orientation of a polyester film in a width direction in obtaining a biaxially oriented polyester film with a uniformity of physical property in the width direction by inhibiting a bowing phenomenon when the film is...