METHOD OF PRODUCING PERMANENT IDENTIFICATION OF GLASS SEGMENTS

摘要

Before heat treatment of a glass sheet, a layer of enamel paint is printed on at least one portion of the glass sheet (5), either by screen-printing or tampon-printing, in the form of at least one block (4), on which at least one laser beam is directed in such a way that it removes a layer of enamel paint at desired positions (7), thereby providing the glass sheet with specific immediate information and identification data relative to date, time and/or process equipment which are stocked in a computer database for at least three years.