Thermoplastic interlayer film
First Claim
1. An interlayer film for use in an optical laminate, the optical laminate having a haze value of less than 4% at a film thickness of 125 to 1000 mcm, comprising a film of at least one substantially linear low density polyolefin, having a polydispersity index of less than 3.5, a density from about 0.850 to 0.905 g/ccm and less than 20%, by weight, crystallinity, laminated to at least one film of ethylene vinyl acetate copolymer.
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Accused Products
Abstract
High clarity optical and safety glass laminate interlayer films and optical laminates are described. The films and their laminates comprise very low density polyethylene and/or its copolymers, preferably polymerized with metallocene catalysts, and modified with additives, such as coupling agents, clarifying or nucleation agents, UV-light absorbers, pigment or color concentrate, and IR-light blockers. The very low density polyethylene is laminated to EVA film for improved bondability in optical laminates.
60 Citations
11 Claims
- 1. An interlayer film for use in an optical laminate, the optical laminate having a haze value of less than 4% at a film thickness of 125 to 1000 mcm, comprising a film of at least one substantially linear low density polyolefin, having a polydispersity index of less than 3.5, a density from about 0.850 to 0.905 g/ccm and less than 20%, by weight, crystallinity, laminated to at least one film of ethylene vinyl acetate copolymer.
Specification