IP Library › Granted Patent US 12,686,628
Granted Patent B2
US 12,686,628 · App. 18/550,038 · Granted Jul 21, 2026

Method for cutting a laminated glazing by means of a laser source

Inventors: Thibault Rapenne (Noyon, FR); Alexandre Fessemaz (Aachen, DE); Tobias Nielsen (Cologne, DE)
Assignee: SAINT-GOBAIN SEKURIT FRANCE
C03B33/078B23K26/38B32B3/266B32B17/10036B32B17/10165C03B33/0222B32B2605/006
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Quick Facts
Patent No.
US 12,686,628
App. No.
18/550,038
Granted
Jul 21, 2026
Kind
B2
Abstract

A laminated glazing having at least one cut-out and a method for cutting a laminated glazing, particularly for a motor vehicle, including at least a first glass sheet, a second glass assembled by an interlayer including at least one sheet of polymer material, the glazing further including an insert having a hole delimited by an inner contour, the insert being housed in a recess provided in the interlayer, the method including detecting, by a vision device, the inner contour; calculating a cutting path to be traveled based on the detection of the inner contour; and cutting, by a laser source having a beam, the first glass sheet based on the calculated cutting path.

Claims (16)

1 . A method for cutting a laminated glazing comprising at least a first glass sheet, a second glass sheet assembled by an interlayer comprising at least one sheet of polymer material, said glazing further comprising an insert having a hole delimited by an inner contour, said insert being housed in a recess provided in said interlayer, said method comprising:

detecting by a vision device said inner contour;

calculating a cutting path to be traveled based on the detection of said inner contour, and

cutting at least said first glass sheet, based on said calculated cutting path, by a laser source having a beam.

2 . The method according to claim 1 , wherein, during the calculating, a shrinkage with respect to said inner contour between 0.1 mm and 1 mm is calculated so that said beam does not reach the insert during the cutting.

3 . The method according to claim 1 , further comprising:

a chamfering step by said laser source consisting of chamfering at least one edge of a hole in said first glass sheet resulting from the cutting.

4 . The method according to claim 1 , wherein, during the cutting, said second glass sheet is also cut based on said calculated cutting path by said laser source.

5 . The method according to claim 1 , further comprising:

a step of chamfering, by said laser source, at least one chamfer on an edge of said first glass sheet and/or on an edge of said second glass sheet of a through-hole resulting from the cutting.

6 . The method according to claim 1 , further comprising:

an additional cutting of said second glass sheet by an additional laser source having a beam based on said calculated cutting path.

7 . The method according to claim 6 , wherein the cutting and the additional cutting are executed simultaneously.

8 . The method according to claim 6 , wherein the cutting and the additional cutting are executed consecutively.

9 . The method according to claim 1 , wherein the laminated glazing is a motor vehicle glazing.

10 . The method according to claim 2 , wherein the shrinkage with respect to said inner contour is between 0.5 mm and 1 mm.