# US 2019/0375666 A1 · Method for producing glass film

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- Number: US 2019/0375666 A1
- Document ID: US20190375666A1
- Status: Published application
- Kind: A1
- Application number: 16/481,919
- Filed: 2018-01-29
- Published: 2019-12-12
- Earliest claimed: 2017-02-07
- Assignees: Nippon Electric Glass Co., Ltd.
- Applicants: Nippon Electric Glass Co., Ltd.
- Inventors: Hiroki MORI; Koichi MORI; Shuji AKIYAMA; Yasuhiro UEMURA; Naoyuki MATSUMOTO
- Web page: https://patentgrep.com/patent/US20190375666A1

## CPC

- C03B 17/06: Forming glass sheets
- B23K 26/38: by boring or cutting
- B65G 49/06: for fragile sheets, e.g. glass
- C03B 33/082: {using a focussed radiation beam, e.g. laser (C03B33/0855 takes precedence)}
- C03B 33/091: {using at least one focussed radiation beam, e.g. laser beam (C03B33/0955 takes precedence)}
- C03B 33/102: {involving a focussed radiation beam, e.g. lasers}
- B23K 26/0846: {for moving elongated workpieces longitudinally, e.g. wire or strip material}
- B23K 2103/54: {Glass}
- C03B 33/0222: {Scoring using a focussed radiation beam, e.g. laser}
- C03B 33/0235: {Ribbons}
- C03B: MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B65G: TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS (packaging B65B; handling thin or filamentary materials, e.g. paper sheets or thread, B65H; cranes B66C; portable mobile or lifting or hauling appliances, e.g. hoists, B66D; devices for lifting or lowering goods for loading or unloading purposes, e.g. fork-lift trucks, B66F9/00; emptying bottles, jars, casks, barrels or similar containers, not otherwise provided for, B67C9/00; delivering or transferring liquids B67D; filling or discharging vessels for liquefied, solidified or compressed gases F17C; pipe-line systems for fluids F17D)

## Abstract

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 (19) 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 μm or more and 300 μm 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.

## Claims

### Claim 1

A method of manufacturing a glass film, comprising:
a conveying step of conveying an elongated glass film along a longitudinal direction thereof; and
a cutting step of irradiating the glass film with a laser beam from a laser irradiation apparatus while conveying the glass film through the conveying step, to thereby separate the glass film,
the cutting step comprising generating a thread-like peeled material in a helical shape from an end portion of the separated glass film in a width direction,
the thread-like peeled material having a width of 180 μm or more and 300 μm or less and a helical diameter of 80 mm or more and 200 mm or less.

### Claim 2 (depends on 1)

The method of manufacturing a glass film according to claim 1, wherein the laser beam to be radiated to the glass film has a diameter of 160 μm or more and 400 μm or less.

### Claim 3 (depends on 2)

The method of manufacturing a glass film according to claim 2, wherein the diameter of the laser beam to be radiated to the glass film is 160 μm or more and 300 μm or less.

### Claim 4 (depends on 1)

The method of manufacturing a glass film according to claim 1,
wherein the width of the thread-like peeled material is 200 μm or more and 270 μm or less, and
wherein the helical diameter of the thread-like peeled material is 90 mm or more and 150 mm or less.

### Claim 5 (depends on 2)

The method of manufacturing a glass film according to claim 2,
wherein the width of the thread-like peeled material is 200 μm or more and 270 μm or less, and
wherein the helical diameter of the thread-like peeled material is 90 mm or more and 150 mm or less.

### Claim 6 (depends on 3)

The method of manufacturing a glass film according to claim 3,
wherein the width of the thread-like peeled material is 200 μm or more and 270 μm or less, and
wherein the helical diameter of the thread-like peeled material is 90 mm or more and 150 mm or less.