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US 10,724,292 B2Granted
Manufacture of laminated glazing
AssigneeSaint-Gobain Glass France
InventorsStéphane Berard, Alexandre Hennion, Philippe Frebourg
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AssigneeSaint-Gobain Glass France
InventorsStéphane Berard, Alexandre Hennion, Philippe Frebourg
Estimating the term…
A laminated includes two bent glass substrates, a polymer interlayer between the glass substrates, and a notch or orifice cut in an entire thickness of the glazing. The glazing includes a border of compressive edge stresses obtained by general controlled cooling of the substrates in a paired state so that compressive stresses are generated at the border, and a local compression zone, different from the border, and obtained by local controlled cooling of a local area of a main surface of the glazing so that compressive stresses are generated in theid local compression zone. The notch or orifice is located in the local compression zone and made in the substrates in a paired state after forming the local compression zone so that cut contours of the substrates in the notch or orifice have a perfect superposition. The compressive edge stresses of the cut contours are greater than 4 MPa.
A bent laminated glazing comprising at least two glass substrates, the bent laminated glazing comprising a border of compressive edge stresses and locally comprising in each of the at least two glass substrates and in a superposed manner in all of the at least two glass substrates a local zone of compressive stresses free of orifices and different from said border, enabling a cutting of said bent laminated glazing along a line within said local zone in order to form, after cutting, an edge having compressive edge stresses greater than 4 MPa.
A bent laminated glazing, comprising at least two glass substrates and at least one interlayer made of a polymer material arranged between the at least two substrates, and at least one notch or orifice in a thickness of said bent laminated glazing, wherein contours of the two glass substrates in the notch or orifice have a perfect superposition, and wherein compressive edge stresses of the contours are greater than 4 MPa.
The bent laminated glazing as claimed 39, wherein the equipment component is a wiper shaft.
A laminated glazing comprising at least two bent glass substrates, at least one interlayer made of a polymer material arranged between the at least two bent glass substrates, and at least one notch or orifice cut in an entire thickness of the laminated glazing, wherein the laminated glazing includes a border of compressive edge stresses obtained by general controlled cooling of the at least two bent glass substrates in a paired state so that compressive stresses are generated at the border of the laminated glazing, and a local compression zone, different from said border, and obtained by local controlled cooling of at least one local area of a main surface of the laminated glazing so that compressive stresses are generated in said local compression zone, wherein the at least one notch or orifice is located in said local compression zone and made in the at least two bent glass substrates in a paired state after forming said local compression zone so that cut contours of the two glass substrates in the notch or orifice of the laminated glazing have a perfect superposition, and wherein compressive edge stresses of said cut contours are greater than 4 MPa.
Dependencies are inferred from the claim text.