Composite structure and method of making the same

Details Composite structure and method of making the same Composite structure and method of making the same

B - Operations, Transporting

32

B

154/90.2

B32B 3/12 (2006.01) B32B 27/00 (2006.01) E04C 2/20 (2006.01) F25D 23/08 (2006.01)

Patent

CA 1054917

APPLICATION FOR LETTERS PATENT FOR COMPOSITE CONSTRUCTION ABSTRACT OF THE DISCLOSURE Disclosed herein is a composite structure comprising a layer of a gas fillet cellular insulation material combined with a layer of impact re- sistant thermoplastic sheet material wherein a rubber modified high nitrile polymer containing at least 55% by weight of nitrile monomer units (calculated as acrylonitrile) is interposed between the gas filled cellular material and the thermoplastic sheet. The high nitrile polymer layer presents an effective barrier to the gas in the cellular material and provides improved impact strength in the composite while retaining good rigidity of the com- posite structure.

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