MANUFACTURING METHOD OF GLASS PLATE

• Main Authors: YAMASHITA TERUHISA, ITAKURA KEI
• Format: Patent
• Language: English; Japanese
• Published: 27.11.2014
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; 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; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS; FREQUENCY-CHANGING; GLASS; GRINDING; JOINING GLASS TO GLASS OR OTHER MATERIALS; MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES; METALLURGY; MINERAL OR SLAG WOOL; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PERFORMING OPERATIONS; PHYSICS; POLISHING; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a manufacturing method of a glass plate for chamfering a corner of an end face of a glass plate that suppresses microcracks on the end face of the glass plate and suppresses cracks and deformation of the glass plate.SOLUTION: A manufacturing method of a glass plate is a method for chamfering a corner 93 of an end face 92 of a glass plate 90 and includes a corner heating step and a corner removing step. In the corner heating step, the corner 93 is locally heated to at least the glass transition temperature. In the corner removing step, the corner 93 heated in the corner heating step is cooled and removed from the glass plate 90. 【課題】本発明の目的は、ガラス板の端面の角部を面取りする方法であって、ガラス板の端面のマイクロクラックの発生を抑制し、かつ、ガラス板の割れおよび変形を抑制することができるガラス板の製造方法を提供することである。【解決手段】ガラス板の製造方法は、ガラス板９０の端面９２の角部９３を面取りする方法であって、角部加熱工程と、角部剥離工程とを有する。角部加熱工程は、角部９３の温度を少なくともガラス転移点まで上げて、角部９３を局所的に加熱する。角部剥離工程は、角部加熱工程において加熱された角部９３を冷却して、ガラス板９０から角部９３を剥離させる。【選択図】図５