Method for marking of single pane safety glass

Details Method for marking of single pane safety glass Method for marking of single pane safety glass

C - Chemistry, Metallurgy

03

C

C03C 21/00 (2006.01) B41M 5/26 (2006.01) C03C 23/00 (2006.01)

Patent

CA 2639684

The invention relates to a method for marking single pane security glass, produced from single pane glass by a heat treatment said single pane glass (1) being provided with at least one metal-particle- or metal-ion- containing marking, generated by laser irradiation (3) of a metal ion donor material (2) arranged on the single pane glass, said single pane glass (1) being subjected to a heat treatment to form single pane security glass (1) wherein at least one marking is altered by the heat treatment and it may be checked whether a change to at least one marking has occurred and thus the heat treatment may be verified.

L'invention concerne un procédé servant à marquer du verre de sécurité trempé qui est produit par traitement thermique d'une feuille de verre. Selon ce procédé, une feuille de verre (1) est pourvue, avant traitement thermique, d'au moins un marquage qui contient des particules métalliques et/ou des ions métalliques et qui est produit par irradiation laser (3) d'un milieu donneur (2) d'ions métalliques placé sur la feuille de verre (1). La feuille de verre (1) est ensuite soumise à un traitement thermique afin de former du verre de sécurité trempé (1), au moins un marquage étant modifié par le traitement thermique. On peut ainsi vérifier la présence d'une modification d'au moins un marquage, ce qui permet de contrôler l'exécution du traitement thermique.

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