B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 5/18 (2006.01) B29C 47/06 (2006.01) B32B 27/08 (2006.01) C08J 9/36 (2006.01)
Patent
CA 2054772
2054772 9113750 PCTABS00007 The invention comprises a multi-layer thermoplastic foam sheet comprising a thermoplastic foam layer adjacent to at least one multi-resin layer, preferably comprising a reclaim material mixture recycled from the sheet manufacturing process, and which comprises a thermoplastic barrier resin. In a preferred embodiment, the multi-layer sheet (10) of the invention comprises a four major layer sheet comprising a barrier film layer which comprises a thermoplastic oxygen barrier resin (11); an inner multi-resin reclaim layer (12) comprising the oxygen barrier resin used in the barrier film layer; a foam core layer (13) adjacent to the inner multi-resin reclaim layer; and an outer multi-resin reclaim layer (14), also comprising the oxygen barrier resin, as the other outer layer of the multi-layer sheet. A method for producing the multi-layer sheets of the invention comprising extrusion coating multi-resin layers onto each side of the foam core layer and then lamination of a barrier film layer onto one of the multi-resin layers.
Luetkens Melvin Louis Jr.
Pischke Robert Duane
Schubert John Charles
Amoco Corporation
Gowling Lafleur Henderson Llp
LandOfFree
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