Abstract: A full body of a glass sheet (G) is cut by forming an initial crack (6a) on a preset cutting line (5) of the glass sheet (G) that is supported by a support member (2 (8)) from a back surface side of the glass sheet (G), followed by propagating the initial crack (6a) while passing through the glass sheet from a front surface to the back surface thereof due to a stress generated through localized heating along the preset cutting line (5) and cooling of a heated region that is formed through the localized heating, the glass sheet (G) being supported by the support member (2 (8)) from the back surface side through an intermediation of an elastic sheet (E) having low thermal conductivity.

Abstract: Provided is a method of cutting a glass sheet (G) by performing at least localized heating along a preset cutting line (5) of the glass sheet (G), the method comprising cutting a full body of the glass sheet (G) by performing at least the localized heating along the preset cutting line (5) of the glass sheet (G) under a state in which support members (2 (8)) for supporting, from a back surface side of the glass sheet (G), portions of the glass sheet (G) that are situated apart from the preset cutting line (5) toward both sides thereof are arranged apart from each other so as to form a space (S) on the back surface side of the preset cutting line (8).

Abstract: A manufacturing method for a glass film includes a cleaving step of dividing a glass film having a band shape into a product glass portion and an unnecessary glass portion, and a collecting step of sequentially shattering the unnecessary glass portion, and collecting the shattered unnecessary glass portion. The cleaving step is followed by vibration regulating processing of regulating vibrations of the unnecessary glass portion in a thickness direction thereof, the vibration regulating processing being executed in at least one location in the longitudinal direction of the unnecessary glass portion, and the collecting step being executed on a downstream side of the at least one location of the vibration regulating processing.

Abstract: A full body of a glass sheet (G) is cut by forming an initial crack (6a) on a preset cutting line (5) of the glass sheet (G) that is supported by a support member (2 (8)) from a back surface side of the glass sheet (G), followed by propagating the initial crack (6a) while passing through the glass sheet from a front surface to the back surface thereof due to a stress generated through localized heating along the preset cutting line (5) and cooling of a heated region that is formed through the localized heating, the glass sheet (G) being supported by the support member (2 (8)) from the back surface side through an intermediation of an elastic sheet (E) having low thermal conductivity.

Abstract: A full body of a glass sheet (G) is cut by forming an initial crack (6a) on a preset cutting line (5) of the glass sheet (G) that is supported by a support member (2 (8)) from a back surface side of the glass sheet (G), followed by propagating the initial crack (6a) while passing through the glass sheet from a front surface to the back surface thereof due to a stress generated through localized heating along the preset cutting line (5) and cooling of a heated region that is formed through the localized heating, the glass sheet (G) being supported by the support member (2 (8)) from the back surface side through an intermediation of an elastic sheet (E) having low thermal conductivity.

Abstract: Provided is a method of cutting a glass sheet (G) by performing at least localized heating along a preset cutting line (5) of the glass sheet (G), the method comprising cutting a full body of the glass sheet (G) by performing at least the localized heating along the preset cutting line (5) of the glass sheet (G) under a state in which support members (2 (8)) for supporting, from a back surface side of the glass sheet (G), portions of the glass sheet (G) that are situated apart from the preset cutting line (5) toward both sides thereof are arranged apart from each other so as to form a space (S) on the back surface side of the preset cutting line (8).

Abstract: In a cleaving apparatus for a glass film, an initial crack, which is formed at a leading end portion of a preset cleaving line of a glass film, is propagated along the preset cleaving line by a thermal stress generated in the glass film through localized heating performed along the preset cleaving line and cooling of a heated region resulting from the localized heating. At this time, a resin sheet having higher flexibility than the glass film is arranged in a cleaving region, and the resin sheet is floated by blowing a gas on a lower surface of the resin sheet by a floating unit. Then, a preset cleaving portion of the glass film including the preset cleaving line is lifted and supported while being covered with the floated resin sheet from below, and in this state, the glass film is cleaved.

Abstract: The manufacturing method for a glass film includes, in this order: a cleaving step of dividing a glass film (G) having a band shape into a product glass portion (Ga) and an unnecessary glass portion (Gb); and a collecting step of sequentially shattering the unnecessary glass portion (Gb), and collecting the shattered unnecessary glass portion. The cleaving step is followed by vibration regulating processing of regulating vibrations of the unnecessary glass portion (Gb) in a thickness direction thereof, the vibration regulating processing being executed in at least one location in the longitudinal direction of the unnecessary glass portion (Gb) together with the collecting step executed on a downstream side of the at least one location of the vibration regulating processing.

Abstract: In a cleaving apparatus (1) for a glass film, an initial crack (10), which is formed at a leading end portion of a preset cleaving line (7) of a glass film (G), is propagated along the preset cleaving line (7) by a thermal stress generated in the glass film (G) through localized heating performed along the preset cleaving line (7) and cooling of a heated region resulting from the localized heating. At this time, a resin sheet (R) having higher flexibility than the glass film (G) is arranged in a cleaving region, and the resin sheet (R) is floated by blowing a gas on a lower surface of the resin sheet (R) by a floating unit (3). Then, a preset cleaving portion of the glass film (G) including the preset cleaving line (7) is lifted and supported while being covered with the floated resin sheet (R) from below, and in this state, the glass film (G) is cleaved.