Being production manner of the glass/glass ceramic board which the widely slant face was formed plate glass or beforehand to ceramics is converted by grinding the slant face in

摘要

PROBLEM TO BE SOLVED: To enable to fabricate a glass/glass-ceramic plate which is provided with a remarkably widened facet without necessitating the increase in a standard thickness of the glass/glass-ceramic cooking plate, and can prevent flow-out.;SOLUTION: The glass/glass-ceramic plate on which the widened facet is formed is fabricated by forming a glass molten material into the glass plate and cutting a shallow facet on the end part of the glass plate, and if necessary, forming into the glass-ceramic or cutting the shallow facet on the glass-ceramic plate previously formed into ceramic. In a 1st step for forming the glass plate (1), a ridge structure (2) is formed at least on a base material corresponding to one end part of the glass plate, and in a 2nd step, the widened facet (3), having 30-70 mm width and a flank formed higher to the upper surface of the glass plate on the inside end part of the facet, is cut using the ridge structure (2) in the base material which is formed on the corresponding end part of the glass plate.;COPYRIGHT: (C)2005,JPO&NCIPI