A manufacturing method for a glass film includes at least a cutting step of cutting a strip-shaped glass film while conveying the glass film in a predetermined direction by a conveying device. In the cutting step, the glass film is cut in predetermined cutting zones by irradiating the glass film with laser beams. A support conveyance surface of the conveying device for the glass film is separated at the cutting zones for the glass film. Further, a first surface plate capable of supporting the glass film in a contact manner is disposed at a position that is located in a width direction of the glass film with respect to the cutting zones and corresponds to a center of a glass film obtained by the cutting in the width direction.

In a method of manufacturing a glass film, in a cutting step, a crack (CR) formed in a non-product portion (Gc1, Gc2) along a longitudinal direction of a glass film (G2) is guided by a guiding member (17a, 17b) so as to propagate to an outer end portion (Gd) of the non-product portion (Gc1, Gc2) in a width direction.

Provided is an apparatus for checking a point of impact. The apparatus for checking a point of impact includes: a first supply unit configured to supply an object through rolling; a second supply unit configured to receive the object from the first supply unit through rolling and supply the object to a demand place; a variable unit configured to apply a tension force by pressurizing the object or release the tension force by releasing the pressurization based on a change in a position; a detection unit configured to detect the change in the position of the variable unit to generate position information of the object; a guide unit provided between the first supply unit and the second supply unit to guide the object; and a control unit configured to control a handling process including the supply of the object based on the position information of the detection unit.

Provided is a method of manufacturing a glass roll (GR), including: a conveying step of conveying a band-shaped glass film (G2) in a lateral conveying direction by a conveying device (4); and a roll-up step of rolling up the glass film (G2) into a roll shape. The conveying step includes an inspection step of measuring a state of each of end portions (Gd, Ge) in a width direction of the glass film (G2) by a detection unit (19a, 19b) under a state in which a tension is applied to the glass film (G2) that passes through an intermediate conveying region (MS) of the conveying device (4) by a tension applying portion.

A position of a band-shaped glass film (1) conveyed downward in a vertical direction is detected by a detection unit (21), and the conveyance speed of each of a plurality of conveyance devices (10, 11, 12, and 14) provided in a horizontal conveyance path (R2) is controlled based on detection data in the detection unit (21). Under a condition that, of the plurality of conveyance devices (10, 11, 12, and 14), the conveyance device (10) located on a most upstream side is defined as an upstream side conveyance device, and the conveyance devices (11, 12, and 14) on a downstream side of the upstream side conveyance device (10) are defined as downstream side conveyance devices, an upper limit and a lower limit are set to the conveyance speed of each of the downstream side conveyance devices (11, 12, and 14).

A roller for transporting a flexible substrate is described. The roller includes a main body having a plurality of gas supply slits provided in an outer surface of the main body. The plurality of gas supply slits extends in a direction of a central rotation axis of the roller. Further, the roller includes a sleeve provided circumferentially around and in contact with the main body. The sleeve has a plurality of gas outlets being provided above the plurality of gas supply slits. Further, the sleeve includes a metal layer embedded within isolating material.

At the time of performing manufacture-related processing on a glass film (G1) with a manufacture-related-processing unit (9) while conveying the glass film (G1) with a belt conveyor (22d), the belt conveyor (22d) is configured to be capable of attracting the glass film (G1) to the belt (23d) on an upstream side in a conveyance direction of the glass film (G1) with respect to the manufacture-related-processing unit (9), and the belt conveyor (22d) is configured to be capable of changing attraction forces (P11 and P12) with respect to the glass film (G1) in a conveyance direction (X) of the glass film (G1).

Provided is a method of producing a glass roll including: a conveying step of conveying a glass film (G) along a longitudinal direction thereof; a cutting step of irradiating the glass film (G) with a laser beam (L) from a laser irradiation apparatus (19) while conveying the glass film (G) by the conveying step, to thereby separate the glass film (G) into a non-product portion (Gc) and a product portion (Gd); and a take-up step of taking up the product portion (Gd) into a roll shape, to thereby form a glass roll (R). The cutting step includes a step of winding a thread-like peeled material (Ge) generated from an end portion of the product portion (Gd) in a width direction around a rod-shaped collecting member (23), and leading the wound thread-like peeled material (Ge) in a predetermined conveying direction (PX) by a leading device (24).

Provided is a method of manufacturing a glass article, including: a preparation step of preparing a glass preform (1) including a first thin-walled portion (1a) and a first thick-walled portion (1b) at different positions in a width direction; a forming step of drawing the glass preform (1) downward while heating the glass preform (1) through use of a redraw method, to thereby form a glass ribbon (2) including a second thin-walled portion (2a) and a second thick-walled portion (2b) at different positions in the width direction; and an article formation step of obtaining a glass roll (3) serving as a glass article from the glass ribbon (2).

A manufacturing method for a band-shaped glass includes a forming step, which forms a band-shaped glass, an annealing step, which performs an annealing treatment on the band-shaped glass, a cooling step, which cools the annealed band-shaped glass, a direction-changing step, which changes a feeding direction of the cooled band-shaped glass from a longitudinal direction to a horizontal direction, and a horizontal conveying step, which conveys the band-shaped glass in the horizontal direction while supporting the band-shaped glass at a horizontal conveyance part. In the horizontal conveying step, the band-shaped glass is conveyed in the horizontal direction while a first propulsion for driving the conveyance in the horizontal direction is provided at both sides in the width direction of the band-shaped glass by the horizontal conveyance part, the first propulsion being larger than a second propulsion provided at a center in the width direction of the band-shaped glass.