Injection molding method and injection molding machine

An injection molding machine comprising:

• a molding unit including a first die and a second die with a long film traveling between the first die and the second die, the film including a base film, the molding unit closing the first die and the second die when the film is positioned between the first die and the second die, forming a molded article with a transfer film by injecting resin into a cavity formed by the first die and the second die that hold a part of the film, and then opening the first die and the second die, the transfer film being transferred from the base film;
• and
• a film feeder including a feeding unit that feeds the film and a winding unit that winds up the film fed from the feeding unit, the film feeder causing the film to travel between the first die and the second die while applying tension to the film having a surface tilted with respect to a parting face of the first die,
• wherein after the first die and the second die are opened, the film feeder separates the base film from the first die so as to tilt the surface of the film with respect to the parting face of the first die.