| 摘要 |
PROBLEM TO BE SOLVED: To provide a transparent laminated polyester film holding the excellent original properties (thermal, mechanical, physical or chemical properties, dimensional stability or the like), excellent in surface flatness and reduced in curling. SOLUTION: This manufacturing method for the laminated polyester film is a manufacturing process for a laminated polyester non-oriented film characterized in that either one of mutually different polyester layers contains an aromatic dicarboxylic acid having a metal sulfonate group and polyalkylene glycols and/or a saturated aliphatic dicarboxylic aid as copolymerizable components. When a laminated molten polymer is coold and solidified on a casting drum to manufacture a non-oriented film, a cooling speed T (°C/sec) is set to≥12°C/sec. COPYRIGHT: (C)2004,JPO&NCIPI |
