Laminated glazing
AssigneePilkington Group Limited
InventorsPeter Paulus, Shirley Anne Sergeant, David Michael Bugg
Life of this patent
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Abstract
A laminated glazing comprising: a thick ply of glass having a thickness in the range 1.9 to 2.4 mm; a polymer interlayer; and a thin ply of glass having a thickness in the range 0.8 to 1.4 mm, wherein the relative optical power of the glazing is less than would be predicted from the single glass reflected optical power of the plies before lamination.
Claims12
A laminated glazing comprising:
- a thick ply of glass having a thickness in the range 1.9 to 2.4 mm,
- a polymer interlayer, and
- a thin ply of glass having a thickness in the range 0.8 to 1.4 mm,
- wherein the relative optical power of the glazing is less than would be predicted from the single glass reflected optical power of the plies before lamination.
A method of laminating glass the method comprising:
- providing a thick ply of glass having a thickness in the range 1.9 to 2.4 mm;
- providing a polymer interlayer;
- providing a thin ply of glass having a thickness in the range 0.8 to 1.4 mm;
- and
- laminating the thick ply, interlayer and thin ply under application of pressure in the range 8 bar to 15 bar and at a temperature in the range 110° C. to 150° C.
Use of a thin ply of glass having a thickness in the range 0.8 to 1.4 mm in a laminated glazing further comprising a thick ply of glass having a thickness in the range 1.9 to 2.4 mm and a polymer interlayer, the use being to provide a relative optical power of the glazing less than would be predicted from the single glass reflected optical power of the plies before lamination.
Dependencies are inferred from the claim text.