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US 11,305,517 B2Granted
Stiff interlayers for laminated glass structures
AssigneeCorning Incorporated
InventorsWilliam Keith Fisher, Mark Stephen Friske, Anurag Jain
Life of this patent
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Abstract
A new laminated glass structure for automotive glazing, architectural window and other applications that includes two sheets of relatively thin, optionally chemically strengthened glass, such as Corning® Gorilla® Glass, with a composite interlayer structure that includes at least one relatively stiff layer having relatively high Young's modulus of 50 MPa or higher and a relatively softer polymer layer having a relatively low Young's modulus of 20 MPa or lower.
Claims15
A glass laminate comprising:
- a first chemically strengthened alkali aluminosilicate glass sheet having a thickness of 1.5 mm or less, wherein the first chemically strengthened alkali aluminosilicate glass sheet has a compressive stress of greater than about 600 MPa, a depth of layer greater than about 40 micrometers, and a tensile stress between about 40 and 65 MPa;
- a second glass sheet;
- and
- a composite interlayer positioned between the first and second glass sheets, the composite interlayer comprising:
- two outer polymer layers having a Young's modulus of 50 MPa or greater, and selected from the group consisting of polyvinyl butyral (PVB), poly carbonate (PC), or polyethylene terephthalate (PET), and
- an inner polymer layer having a Young's modulus of less than 20 MPa, and selected from the group consisting of polyvinyl butyral (PVB), acoustic poly vinyl butyral (A -PVB), ethylene vinyl acetate (EVA), plasticized polyvinyl chloride (PVC), or thermoplastic polyurethane (TPU),
- wherein the inner polymer layer is disposed between the two outer polymer layers.
4 more elements
Dependencies are inferred from the claim text.