Nippon Electric Glass Co., Ltd.

Yasuhiro Uemura

Hiroki Mori

Koichi Mori

Shuji Akiyama

Kaoru Mitsugi

Naohiro Ikai

Naoyuki Matsumoto

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

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Shiga, Japan

Yasuhiro Uemura