Method of producing permanent identification of glass segments
AssigneeSaint-Gobain Glass France
InventorsHubert Hauser, Herbert Stadelmann, Andreas Kasper
Life of this patent
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Abstract
A method for visual marking of heat-treated substrates, in particular tempered glass panes. The method modifies a marking layer deposited on a surface of the substrate, that visually indicates that the heat treatment has been carried out, and produces a rough marking field on the surface of the substrate that the marking layer deposited on the substrate exhibits intimate adhesive bonding thereto, which marking layer cannot be completely removed using a mechanical mechanism.
Claims18
1-17. (canceled)
A method for visual marking glass panes tempered and then heat-treated, the method comprising:
- modifying a marking layer deposited on a surface of the glass pane, that visually indicates that the heat treatment has been carried out;
- producing a marking field on the surface of the glass pane, the surface of the marking field having a surface structure and being modified relative to a smooth surface of the glass pane such that the marking layer deposited on the glass pane between tempering and heat treatment exhibits intimate adhesive bonding thereto, which marking layer cannot be completely removed from the marking field using a mechanical mechanism, and the color of the marking layer being irreversibly modified by the heat treatment.
A glass pane tempered and then heat-treated, comprising:
- a locally deposited marking layer modified, in a visually perceptible manner by the heat treatment,
- wherein the marking layer is supported by the marking field presenting a rough surface structure configured to form an intimate bond with the marking layer, which layer cannot be completely removed by a mechanical mechanism.
Dependencies are inferred from the claim text.