Method and apparatus for manufacturing laminate film for cell-type battery pouch

A method of manufacturing a laminate film for a cell-type battery pouch, the method comprising:

• hot pressing a material sheet on one surface of a base sheet to form a laminate;
• and
• thermally treating the laminate without applying pressure to the laminate,
• wherein the thermally treating comprises:
• a temperature elevation stage of gradually increasing the amount of thermal energy supplied to the laminate until the temperature of the laminate reaches a thermal treatment target temperature;
• and
• a temperature drop stage of gradually decreasing the amount of thermal energy supplied to the laminate so that the temperature of the laminate gradually drops from the thermal treatment target temperature;
• wherein in the thermally treating, the thermal energy is supplied to the laminate using multiple induction heating rolls,
• the temperature of the induction heating rolls used in the temperature elevation stage is gradually increased, and
• the temperature of the induction heating rolls used in the temperature drop stage is gradually decreased.