Film and method of producing the same

A method of producing a film comprising a copolymer having a tetrafluoroethylene-based unit and an ethylene-based unit, comprising:

• melting a copolymer comprising a copolymer having a tetrafluoroethylene-based unit and an ethylene-based unit such that a melt comprising the copolymer is obtained;
• continuously extruding the melt through a die to form the melt into a sheet shape;
• and
• passing the melt extruded in the sheet shape between a pair of a rigid roll and an elastic roll or bringing the melt extruded in the sheet shape into contact with a rigid roll or an elastic roll, and a subsequent stage roll placed at a subsequent stage, for cooling such that a film comprising the copolymer is obtained,
• wherein the film has a haze in a range of 1.2% to 8.0%, an ultraviolet reflectance of less than 17.0%, and a thickness in a range of 250 to 400 μm, a surface temperature of each of the rigid roll, the elastic roll and the subsequent stage roll is controlled with a heating medium, a temperature of the melt immediately before passing between the rigid roll and the elastic roll or immediately before being in contact with the rigid roll or the elastic roll is in a range of from 200° C. to 330° C., a melting point M of the copolymer is 200° C. or more, and an average of a heating medium temperature of the rigid roll and a heating medium temperature of the elastic roll or an average of a heating medium temperature of the rigid roll or the elastic roll and a heating medium temperature of the subsequent stage roll is designated as T (° C.), T×M is 31,000 or less.