Impact-resistant laminate
AssigneePilkington plc
InventorChristopher W. G. Hall
Life of this patent
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Abstract
An impact-resistant laminate has adhered to a rear glass face, opposite to the face which receives the impact, a polycarbonate sheet up to about 3 mm thick which is sufficiently thin to conform to the rear glass face and to be adhered thereto without preforming. Preferably the thickness of the polycarbonate sheet is in the range about 0.25 mm to about 0.64 mm, and it has an abrasion-resistant self-healing coating. The laminate may include toughened or annealed glass sheets.
Claims3
A method of producing a curved, laminated impact-resistant panel comprising laminating together a plurality of glass sheets which are preformed to a curved shape and including an exposed front glass sheet and a rear glass sheet;
- and adhering to the rear glass face of the rear glass sheet a thin flexible polycarbonate sheet up to about 1 mm thick, which carries a self-healing polyurethane coating up to about 0.5 mm thick, to match the curvature of the preformed rear glass face of the rear glass sheet without preforming said thin flexible polycarbonate sheet.
Dependencies are inferred from the claim text.