Method for producing glass film

A method of manufacturing a glass film, comprising:

• a forming step of forming a band-shaped glass film by drawing the band-shaped glass film downward in a vertical direction by a down-draw method;
• a conveyance direction changing step of changing a conveyance direction of the band-shaped glass film from a vertically downward direction to a horizontal direction by conveying the formed band-shaped glass film along a curved conveyance path so that a front surface of the band-shaped glass film after having passed through the curved conveyance path faces upward;
• and
• a horizontal conveyance step of conveying the band-shaped glass film, which has been changed in conveyance direction, in the horizontal direction along a horizontal conveyance path,
• wherein, when some sections of the band-shaped glass film along a longitudinal direction are to be discarded as a discard glass part, the method involves:
• a separating step of separating the discard glass part from the band-shaped glass film by cutting the band-shaped glass film in a width direction on the horizontal conveyance path;
• and
• a discarding step of discarding the separated discard glass part by causing the discard glass part to leave the horizontal conveyance path downward.