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US 2023/0142784 A1Published application
Laminated glazing
AssigneePilkington Group Limited
InventorsPeter PAULUS, Tomasz TELEGA
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AssigneePilkington Group Limited
InventorsPeter PAULUS, Tomasz TELEGA
Estimating the term…
A laminated glazing for a vehicle windscreen comprising first and second sheets of glazing material joined by a sheet of adhesive interlayer material is described. The laminated glazing has an outer facing surface and an inner facing surface comprising a first treated region that has been subjected to a roughening process such that before the roughening process the first treated region has a first surface roughness and after the roughening process the first treated region has a second surface roughness. The first treated region having the second surface roughness helps the laminated glazing break when subject to an impact on the outer facing surface. Use of a roughened region to reduce the time taken for a laminated glazing to break upon being impacted by an impactor is also described.
A laminated glazing for a vehicle windscreen comprising a first sheet of glazing material joined to a second sheet of glazing material by at least one sheet of adhesive interlayer material, each of the first and second sheets of glazing material having a respective first major surface and second major surface, wherein the second major surface of the first sheet of glazing material faces the first major surface of the second sheet of glazing material, further wherein the second major surface of the second sheet of glazing material comprises at least a first treated region, the first treated region having been subjected to a roughening process such that prior to the roughening process the first treated region has a first surface roughness, and after the roughening process, the first treated region has a second surface roughness.
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Use of one or more roughened region on a first exposed surface of a laminated glazing to reduce the time taken for the laminated glazing to break upon being impacted by a suitable impactor at an impact region on a second exposed surface of the laminated glazing.
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Dependencies are inferred from the claim text.