METHODS OF SEPARATING A GLASS WEB

• Main Author: Abramov, Anatoli Anatolyevich
• Format: Patent
• Language: English
• Published: 29.07.2021
• Subjects: CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; GLASS; MACHINE TOOLS; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; MINERAL OR SLAG WOOL; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM; WORKING CEMENT, CLAY, OR STONE; WORKING STONE OR STONE-LIKE MATERIALS

Methods of separating a glass web that is moving at a glass web velocity. The method includes exposing a separation path on the glass web to at least one laser beam spot that moves with a laser beam spot velocity vector that is equal to a glass web velocity vector in a conveyance direction. The method also includes creating a defect on the separation path while the separation path is under thermal stress from the laser beam spot, whereupon the glass web spontaneously separates along the separation path in response to the defect. In further examples, a glass web separation apparatus includes a first reflector that rotates such that a laser beam spot repeatedly passes along a separation path and a second reflector that rotates such that the laser beam spot moves in a conveyance direction of the glass web.