METHOD FOR PRODUCING COMPOSITE FILM

摘要

To provide a manufacturing method of a composite film for laminated glass, the method enabling the high-yield manufacture of the composite film that causes less appearance failure in the obtained laminated glass, while ensuring smooth workability. A manufacturing method of a composite film composed of a resin intermediate film and a plastic film for laminated glass, including: feeding the resin intermediate film with 0.04 to 0.4 N/cm tension and the plastic film, between a two rolls whose surface temperatures are 25 to 50°C, and pressing these to obtain a laminate; and feeding the laminate between a third roll whose surface temperature is 60°C or higher and lower than Tg of a resin in the plastic film and a fourth roll whose surface temperature is lower than this by 15 to 30°C, so as to bring the plastic film into contact with the third roll, and pressing the laminate.