COPOLYESTER FILM FOR STRETCH PACKAGING

摘要

PROBLEM TO BE SOLVED: To provide a copolyester film useful as a film for stretch packaging having biodegradability and moderate elastic recovery. SOLUTION: This copolyester film for stretch packaging is characterized by including at least >=65% copolyester containing 45-55 mol% butanediol component, 20-30 mol% terephthalic acid component, 20-30 mol% adipic acid component and 0-5 mol% sulfonate compound as main components and exhibiting >=25% elastic recovery after 40% elongation.