Protective glazing laminate
AssigneeSaint-Gobain Performance Plastics Corporation
InventorsMichael L. Friedman, Glenn T. Visscher
Life of this patent
Estimating the term…
Abstract
Disclosed is a fire-protection and safety glazing laminate having a haze value less than 4 percent comprising (A) a plurality of high modulus layers laminated with (B) at least one fluoropolymer resin layer wherein (B) resides between (A). The high modulus layers comprise glass, polycarbonate or polyurethane. The fluoropolymer resin layer has a matte finish surface, an embossed finish surface or a combination thereof and is exposed to a corona treatment in an organic gas atmosphere. The high modulus layers are adhered to the fluoropolymer resin layer through a pressure and heat lamination.
Claims12
A fire-protection and safety glazing laminate having a haze value less than 4 percent comprising:
- (A) a plurality of high modulus layers laminated with
- (B) at least one fluoropolymer resin layer
- wherein (B) resides between (A),
- wherein the high modulus layers comprise glass, polycarbonate or polyurethane, provided that the high modulus layer has a Shore D hardness greater than about 70 when the high modulus layer comprises polyurethane,
- wherein the fluoropolymer resin layer is of a precursor resin web having a matte finish surface, an embossed finish surface or a combination thereof, said matte finish surface and embossed finish surface comprising projections having a height in the range of about 10 to 500 μm,
- wherein the fluoropolymer precursor resin web is exposed to a corona treatment in an organic gas atmosphere, and
- wherein the high modulus layers are adhered to the fluoropolymer resin layer through a pressure and heat lamination of the high modulus layers to the precursor resin web.
A fire-protection and safety glazing laminate having a haze value less than 4 percent comprising:
- (A) a plurality of high modulus layers laminated with
- (B) at least one fluoropolymer resin layer
- wherein (B) resides between (A),
- wherein the high modulus layers comprise glass, polycarbonate or polyurethane, provided that the high modulus layer has a Shore D hardness greater than about 70 when the high modulus layer comprises polyurethane,
- wherein the fluoropolymer resin layer is of a precursor resin web having a matte finish surface, an embossed finish surface or a combination thereof, said matte finish and embossed finish comprising projection having a height in the range of about 10 to 500 μm,
- wherein the fluoropolymer precursor resin web is exposed to a corona treatment in an organic gas atmosphere,
- wherein the high modulus layers are adhered to the fluoropolymer resin layer through a pressure and heat lamination of the high modulus layers to the precursor resin web, and
- wherein the laminate is free of any adhesive layer between each adjacent layer (A) and layer (B).
Dependencies are inferred from the claim text.