| 摘要 |
<p>A laminate (10) which is substantially free of distortion when used in a safety glazing comprising a transparent, thermo- plastic substrate layer (12) optionally surface treated or coated to improve adhesion, bearing one or more functional performance layers (18), such as an infra-red radiation reflecting stack, and at least o ne layer of plasticized polyvinyl butyral (14, 16) bonded on one side to a functional performance layer or the substrate layer having a roughened deairing surface on its other side charac- terized by a roughness value, Rz, of at least 10 micrometers, such plasticiz ed polyvinyl butyral Layer, before bonding to the sub- strate layer or functional performance layer, possessing low surface wavines s on each side characterized by a wave index value. WI, of less than 15.</p> |
