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US 12,540,799 B2Granted
Lightweight ballistic glasses
AssigneeSabic Global Technologies B.V.
InventorsAbdulrhman Mohammad Alfawzan, Waleed Fahad Allafi, Mohannad Abulghaith Alhaidari
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Abstract
Lightweight ballistic glasses are provided that provide effective protection from ballistic attack while also being lightweight enough for use in armored vehicles and aircraft. In addition to other embodiments, a multilayered lightweight ballistic glass is provided that meets the CEN 1063 Level BR7 standard while having a weight of no greater than about 155 kilograms per square meter (kg/m2), and a total thickness of less than about 75 mm.
Claims15
A lightweight ballistic glass comprising:
- an exterior side comprising an exterior surface of the ballistic glass and an interior side comprising an interior surface of the ballistic glass;
- a plurality of borosilicate glass layers, one of the plurality of borosilicate glass layers forming the exterior surface of the ballistic glass;
- a plurality of exterior aliphatic polyurethane film layers, each of the plurality of borosilicate glass layers separated from an adjacent borosilicate glass layer by at least one of the plurality of exterior aliphatic polyurethane film layers, each of the plurality of exterior aliphatic polyurethane layers in contact with a surface of at least one of the plurality of borosilicate glass layers;
- an interior polycarbonate sheet having a first surface and a second surface, the second surface of the interior polycarbonate sheet forming the interior surface of the ballistic glass;
- an interior aliphatic polyurethane film layer in contact with the first surface of the interior polycarbonate sheet, the interior aliphatic polyurethane film layer positioned to separate the first surface of the polycarbonate sheet from a surface of a borosilicate glass layer;
- and
- a first exterior polycarbonate sheet, and a second exterior polycarbonate sheet, each exterior polycarbonate sheet having a thickness from about 0.5 mm to about 1.5 mm, the first exterior polycarbonate sheet separated from the second exterior polycarbonate sheet by at least two borosilicate glass layers, each of the at least two borosilicate glass layers having a thickness from about 7.5 mm to about 10.5 mm;
- wherein each of the exterior polycarbonate sheets are separated from the interior polycarbonate sheet by at least three borosilicate glass layers, each of the at least three borosilicate glass layers having a thickness from about 7.5 mm to about 19.5 mm;
- and
- wherein each of the exterior polycarbonate sheets is in contact with two of the plurality of exterior aliphatic polyurethane film layers.
7 more elements
A method of manufacturing a multi-layered lightweight ballistic glass, the method comprising assembling a multi-layered structure comprising:
- a first borosilicate glass layer forming the exterior surface of the lightweight ballistic glass, the first borosilicate glass layer having a thickness from about 3.5 mm to about 4.5 mm;
- a first polycarbonate sheet separated from the first borosilicate glass layer by a first aliphatic polyurethane film layer, the first polycarbonate sheet having a thickness from about 0.5 mm to about 1.5 mm;
- a second borosilicate glass layer separated from the first polycarbonate sheet by a second aliphatic polyurethane film layer, the second borosilicate glass layer having a thickness from about 7.5 mm to about 8.5 mm;
- a third borosilicate glass layer separated from the second borosilicate glass layer by a third aliphatic polyurethane film layer, the third borosilicate glass layer having a thickness from about 9.5 mm to about 10.5 mm;
- a second polycarbonate sheet separated from the third borosilicate glass layer by a fourth aliphatic polyurethane film layer, the second polycarbonate sheet having a thickness from about 0.5 mm to about 1.5 mm;
- a fourth borosilicate glass layer separated from the second polycarbonate sheet by a fifth aliphatic polyurethane film layer, the fourth borosilicate glass layer having a thickness from about 9.5 mm to about 10.5 mm;
- a fifth borosilicate glass layer separated from the fourth borosilicate glass layer by a sixth aliphatic polyurethane film layer, the fifth borosilicate glass layer having a thickness from about 9.5 mm to about 10.5 mm;
- a sixth borosilicate glass layer separated from the fifth borosilicate glass layer by a seventh aliphatic polyurethane film layer, the sixth borosilicate glass layer having a thickness from about 18.5 mm to about 19.5 mm;
- and
- a third polycarbonate sheet forming the interior surface of the lightweight ballistic glass and separated from the sixth borosilicate glass layer by an eighth aliphatic polyurethane film layer, the third polycarbonate sheet having a thickness from about 5.5 mm to about 6.5 mm;
- the first, second, third, fourth, fifth, sixth, and seventh aliphatic polyurethane film layers having a thickness from about 0.60 mm to about 0.65 mm and the eighth aliphatic polyurethane film layer having a thickness of from about 1.1 mm to about 1.4 mm.
8 more elements
Dependencies are inferred from the claim text.