To provide a manufacturing method of a T-die cast film excellent in the balance between extrusion molding processability and the quality such as a smell, the taste or the like of an extrusion molded product.

In the manufacturing method of the T-die cast film containing an ethylene/α-olefin copolymer with a flow activating energy of 50 kJ/mol or above having a constituent unit derived from ethylene and a constituent unit derived from a 3-20 C α-olefin, the ethylene/α-olefin copolymer is molded under a condition wherein the melting temperature in a die gap is 200°C or below.

COPYRIGHT: (C)2005,JPO&NCIPI