Impact resistant laminate
First Claim
1. Impact or shock resistant laminate having improved spall resistance consisting essentially of a plurality of laminae including a back polycarbonate lamina having a controlled thickness of from about 30 mils to about 220 mils opposite the direction of impact or shock, said back polycarbonate lamina having a mar-resistant coating on the exposed surface thereof opposite the direction of impact, a front polycarbonate lamina facing the direction of impact or shock having a mar-resistant coating on the exposed surface thereof facing the direction of impact, and at least one acrylic resin lamina disposed intermediate said back and front polycarbonate laminae, the back and front polycarbonate laminae being bonded to said acrylic resin lamina by a compatible adhesive.
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Abstract
Improved impact or shock resistant laminates are provided comprising a plurality of laminae including a back polycarbonate lamina of controlled thickness opposite the direction of impact or shock, a front polycarbonate lamina facing the direction of impact or shock, and at least one acrylic resin lamina intermediate said back and front polycarbonate laminae, said polycarbonate laminae having a relatively brittle overlayer or coating on the outer surfaces thereof opposite said intermediate acrylic based lamina.
25 Citations
6 Claims
- 1. Impact or shock resistant laminate having improved spall resistance consisting essentially of a plurality of laminae including a back polycarbonate lamina having a controlled thickness of from about 30 mils to about 220 mils opposite the direction of impact or shock, said back polycarbonate lamina having a mar-resistant coating on the exposed surface thereof opposite the direction of impact, a front polycarbonate lamina facing the direction of impact or shock having a mar-resistant coating on the exposed surface thereof facing the direction of impact, and at least one acrylic resin lamina disposed intermediate said back and front polycarbonate laminae, the back and front polycarbonate laminae being bonded to said acrylic resin lamina by a compatible adhesive.
Specification