METHOD FOR CUTTING LAMINATE, METHOD FOR PROCESSING LAMINATE, AND DEVICE AND METHOD FOR CUTTING BRITTLE PLATE-LIKE OBJECT

• Main Authors: MIWA, YOSHIHARU, HASEGAWA, YOSHINORI, ETA, MICHIHARU, NODA, TAKAYUKI, MORI, HIROKI
• Format: Patent
• Language: English; French; German
• Published: 13.04.2016
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACHINE TOOLS; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; MINERAL OR SLAG WOOL; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PERFORMING OPERATIONS; PHYSICS; SOLDERING OR UNSOLDERING; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING; WELDING; WORKING BY LASER BEAM

A cutting method for a laminate, comprising carrying out laser fusing by irradiating the laminate with a laser beam from one side thereof, the laminate being obtained by integrally laminating glass sheets on both surfaces of a resin sheet, the laser beam having a focal point adjusted inside the laminate at a position that is set within a range of more than 50% and 90% or less of an overall thickness of the laminate from an incident surface side of the laser beam.