Laminate for a safety glazing

Details Laminate for a safety glazing Laminate for a safety glazing

B - Operations, Transporting

32

B

B32B 17/10 (2006.01) B32B 15/08 (2006.01) B32B 27/08 (2006.01) C07F 9/20 (2006.01)

Patent

CA 2088991

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 one 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 plasticized polyvinyl butyral Layer, before bonding to the sub- strate layer or functional performance layer, possessing low surface waviness on each side characterized by a wave index value. WI, of less than 15.

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