Nippon Electric Glass Co., Ltd.

Shuji Akiyama

Kaoru Mitsugi

Hiroki Mori

Koichi Mori

Naohiro Ikai

Yasuhiro Uemura

Yoshinori Hasegawa

Koji Nishijima

Naoyuki Matsumoto

Provided is a glass film manufacturing method in which manufacture-related processing is performed on a glass film while the glass film (G) is conveyed, the glass film manufacturing method comprising the step of conveying the glass film (G) on a suction roller (), wherein the suction roller () is configured to suck only a center portion of the glass film in a width direction of the glass film (G).

Glass film manufacturing method

Provided is a method of manufacturing a glass film, including: a conveying step of conveying an elongated glass film (G) along a longitudinal direction thereof; and a cutting step of irradiating the glass film (G) with a laser beam (L) from a laser irradiation apparatus () while conveying the glass film (G) through the conveying step, to thereby separate the glass film (G). The cutting step includes generating a thread-like peeled material (Ge) in a helical shape from an end portion of the separated glass film (G) in a width direction. The thread-like peeled material (Ge) has a width (W) of 180 &#x3bc;m or more and 300 &#x3bc;m or less. In addition, the thread-like peeled material (Ge) has a helical diameter (D) of 80 mm or more and 200 mm or less.

Method for producing glass film

Provided is method of producing a glass roll, the method 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 () 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 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 (), to thereby collect the thread-like peeled material (Ge).

Method for manufacturing glass roll

A conveying device () for a glass film (G) includes: a first support () configured to support a first portion (Gc) of the glass film (G) having been cut; a second support () configured to support a second portion (Gd) of the glass film (G) having been cut; and an opening () formed at a position between the first support () and the second support () and below a laser irradiation apparatus (). A cutting step for the glass film (G) includes deforming the glass film (G) so as to be convex downward through the opening (), and radiating a laser beam (LB) from the laser irradiation apparatus () to a position which is within a range of the opening (), and which is prevented from coinciding with a top (GT) of the glass film (G).

Glass film production method

Provided is a workpiece conveyance method for conveying a workpiece () in a predetermined direction by applying a conveying force (F) to the workpiece () while supporting the workpiece () through use of free rollers (), and the workpiece conveyance method includes: applying flows of a fluid to the free rollers () to apply a rotation auxiliary force (f) to the free rollers () in a rotation direction of the free rollers () during conveyance of the workpiece ().

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Shiga, Japan

Shuji Akiyama