Process for the production of deepdrawable,sterilizable polyester film

摘要: THIS INVENTION RELATES TO A PROCESS FOR THE PRODUCTION OF DEEP-DRAWABLE, STERILIZABLE POLYESTER FILM HAVING GOOD SHELF LIFE IN WHICH STRESS IS APPLIED AN AMORPHOUS ORTHOGONAL DIRECTIONS PLANE FILM, WHEREBY THINNED AT MOST 1/9 ORIGINAL THICKNESS, AND THEN DOUBLED THICKNESS DUE RETARDATION TEMPERATURES BETWEEN 120* 140*C.