Impact-resistant laminate
First Claim
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1. An impact-resistant laminate comprising a front glass sheet which receives an impact and a rear polycarbonate sheet to the rear face of which there is adhered a thin polycarbonate sheet not more than about 0.64 mm thick having an abrasion-resistant self-healing coating of polyurethane.
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Abstract
An impact-resistant laminate has a front glass sheet which receives an impact such as a bullet, and a rear polycarbonate sheet. A thin polycarbonate sheet up to about 1 mm thick is adhered to the rear polycarbonate sheet, and carries a self-healing polyurethane coating.
43 Citations
18 Claims
- 1. An impact-resistant laminate comprising a front glass sheet which receives an impact and a rear polycarbonate sheet to the rear face of which there is adhered a thin polycarbonate sheet not more than about 0.64 mm thick having an abrasion-resistant self-healing coating of polyurethane.
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2. An impact-resistant laminate comprising a front glass sheet which receives an impact and a rear polycarbonate sheet to the rear face of which there is adhered a thin polycarbonate sheet of thickness in the range about 0.25 mm to about 0.64 mm, which thin polycarbonate sheet has a self-healing coating of polyurethane.
- 4. An impact-resistant laminate comprising at least two sheets of annealed glass bonded together by a polyvinylbutyral interlayer, the front glass sheet of which receives an impact, a rear polycarbonate sheet bonded to the rear glass face of said sheets of annealed glass, and a thin polycarbonate sheet not more than about 0.64 mm thick adhered to the rear polycarbonate sheet, which thin polycarbonate sheet has an abrasion-resistant self-healing coating of polyurethane.
- 7. An impact-resistant laminate comprising a front sheet of toughened glass which receives an impact and at least one sheet of polycarbonate, thermoplastic interlayers bonding those sheets, a thin polycarbonate sheet not more than about 0.64 mm thick adhered to the rear face of the rear polycarbonate sheet, and an abrasion-resistant self-healing coating of polyurethane on the thin polycarbonate sheet.
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10. A curved laminated impact resistant panel comprising:
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a front glass sheet which receives an impact and which is preformed to a predetermined curvature, a rear polycarbonate sheet which is preformed to a curved configuration which matches the configuration of the curved front glass sheet, and a self-healing coating of polyurethane which is carried by a thin flexible polycarbonate sheet which is adhered to the rearmost curved face of said rear polycarbonate sheet without preforming of said thin flexible polycarbonate sheet. - View Dependent Claims (11, 12, 13, 14)
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15. A curved laminated security panel comprising:
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a front glass sheet which receives an impact and which is preformed to a predetermined curvature, a rear polycarbonate sheet which is preformed to a configuration matching the front glass sheet, and a self-healing polyurethane coating which is carried by a polycarbonate sheet and is adhered to the rearmost curved face of said rear polycarbonate sheet without preforming of said thick polycarbonate sheet, the polycarbonate sheet with its outer self-healing coating of polyurethane being a film about 1 mm thick. - View Dependent Claims (16)
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- 17. A method of producing a curved laminated impact resistant panel wherein a preformed curved glass sheet which is to be the impact-receiving front glass sheet of the panel is laminated with a preformed curved polycarbonate sheet whose curvature matches the curvature of said front glass sheet, which curved polycarbonate sheet is to be the rear sheet of the laminate, comprising applying a self-healing coating of polyurethane to said rear polycarbonate sheet by adhering to the preformed curved rear polycarbonate face of said rear polycarbonate sheet, a thin flexible polycarbonate sheet which carries said self-healing coating, without preforming said thin flexible polycarbonate sheet.
Specification