E - Fixed Constructions – 04 – B
Patent
E - Fixed Constructions
04
B
18/41, 20/38.2
E04B 2/28 (2006.01) B29C 47/00 (2006.01) B29C 47/04 (2006.01) B29C 47/06 (2006.01) B32B 3/12 (2006.01) E04C 2/54 (2006.01)
Patent
CA 1208873
ABSTRACT A plastic multilayer multiple-wall panel, manufactured by the coextrusion of a plurality of adhesively bonded layers of thermoplastically extrudable synthetic resins by means of a multicomponent extrusion die, and comprising a supporting core layer of polycarbonate resin with a plurality of continuous hollow chambers, a UV absorption layer, bonded on one or both sides of said core layer, and made of a synthetic resin containing at least 2 weight percent of a UV absorber that is volatile at elevated temperatures, and a cover layer, on that side of the UV absorption layer which faces away from the core layer, of a synthetic resin which contains less than 2 weight percent of volatile UV absorber.
442490
Ridout & Maybee Llp
Rohm G.m.b.h.
LandOfFree
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