Glass film production method, glass roll production method, and glass film production device

A manufacturing method for a glass film, the manufacturing method comprising at least a cutting step of cutting a strip-shaped glass film to obtain the glass film while conveying the strip-shaped glass film in a predetermined direction by a conveying device,

• wherein, in the cutting step, the strip-shaped glass film is cut in predetermined cutting zones by irradiating the strip-shaped glass film with laser beams,
• wherein a support conveyance surface of the conveying device for the strip-shaped glass film is separated at the cutting zones for the strip-shaped glass film so that the conveying device is separated into an upstream-side belt conveyor including an upstream-side support conveyance surface located on an upstream side of the cutting zones in a conveying direction for the strip-shaped glass film and a downstream-side belt conveyor including a downstream-side support conveyance surface located on a downstream side of the cutting zones in the conveying direction,
• wherein the upstream-side support conveyance surface and the downstream-side support conveyance surface each move in the conveying direction,
• wherein a first surface plate capable of directly supporting the strip-shaped glass film in a contact manner is disposed at a position that is located in a width direction of the strip-shaped glass film with respect to the cutting zones, overlaps the cutting zones in the conveying direction of the strip-shaped glass film, and corresponds to a center of the glass film obtained by the cutting of the strip-shaped glass film in the width direction, and
• wherein the support conveyance surface does not overlap the cutting zones in plan view.

A manufacturing method for a glass film, the manufacturing method comprising at least a cutting step of cutting a strip-shaped glass film to obtain the glass film while conveying the strip-shaped glass film in a predetermined direction by a conveying device,

• wherein, in the cutting step, the strip-shaped glass film is cut in predetermined cutting zones by irradiating the strip-shaped glass film with laser beams,
• wherein a support conveyance surface of the conveying device for the strip-shaped glass film is separated at the cutting zones for the strip-shaped glass film so that the conveying device is separated into an upstream-side belt conveyor including an upstream-side support conveyance surface located on an upstream side of the cutting zones in a conveying direction for the strip-shaped glass film and a downstream-side belt conveyor including a downstream-side support conveyance surface located on a downstream side of the cutting zones in the conveying direction,
• wherein the upstream-side support conveyance surface and the downstream-side support conveyance surface each move in the conveying direction,
• wherein a first surface plate capable of directly supporting the strip-shaped glass film in a contact manner is disposed at a position that is located in a width direction of the strip-shaped glass film with respect to the cutting zones and corresponds to a center of the glass film obtained by the cutting of the strip-shaped glass film in the width direction,
• wherein the support conveyance surface does not overlap the cutting zones in plan view,
• wherein the first surface plate comprises a first support surface capable of directly supporting the strip-shaped glass film in a contact manner and a first suction portion capable of sucking the strip-shaped glass film toward the first support surface,
• wherein second surface plates each having a second support surface capable of supporting the strip-shaped glass film in a contact manner are disposed so as to each include one of the cutting zones, and each the second surface plates has a second suction portion capable of sucking the strip-shaped glass film toward the second support surface, and
• wherein each of the second suction portions has a second air intake port being open on the second support surface and a pair of third air intake ports located on both sides of the second air intake port in the width direction.

A manufacturing method for a glass film, the manufacturing method comprising at least a cutting step of cutting a strip-shaped glass film to obtain the glass film while conveying the strip-shaped glass film in a predetermined direction by a conveying device,

• wherein, in the cutting step, the strip-shaped glass film is cut in predetermined cutting zones by irradiating the strip-shaped glass film with laser beams,
• wherein a support conveyance surface of the conveying device for the strip-shaped glass film is separated at the cutting zones for the strip-shaped glass film so that the conveying device is separated into an upstream-side belt conveyor including an upstream-side support conveyance surface located on an upstream side of the cutting zones in a conveying direction for the strip-shaped glass film and a downstream-side belt conveyor including a downstream-side support conveyance surface located on a downstream side of the cutting zones in the conveying direction,
• wherein the upstream-side support conveyance surface and the downstream-side support conveyance surface each move in the conveying direction,
• wherein a first surface plate capable of directly supporting the strip-shaped glass film in a contact manner is disposed at a position that is located in a width direction of the strip-shaped glass film with respect to the cutting zones and corresponds to a center of the glass film obtained by the cutting of the strip-shaped glass film in the width direction,
• wherein the support conveyance surface does not overlap the cutting zones in plan view,
• wherein the first surface plate comprises a first support surface capable of directly supporting the strip-shaped glass film in a contact manner and a first suction portion capable of sucking the strip-shaped glass film toward the first support surface,
• wherein second surface plates each having a second support surface capable of supporting the strip-shaped glass film in a contact manner are disposed so as to each include one of the cutting zones, and each the second surface plates has a second suction portion capable of sucking the strip-shaped glass film toward the second support surface, and
• wherein a suction force of the first suction portion for the strip-shaped glass film is smaller than a suction force of the second suction portions for the strip-shaped glass film.