B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 5/18 (2006.01) B32B 27/32 (2006.01)
Patent
CA 2280255
A composite insulation and/or underlayment sheet is provided by continuously extruding a pair of cover laminae comprising a styrenic polymer, and simultaneously extruding between the freshly extruded cover laminae an inner lamina of a material selected from the group consisting of high-impact polystyrene, butadiene styrene, metallocene-catalyzed polymers, and acid copolymers of ethylene, formed with or without discontinuities, the cover laminae being bonded immediately to the inner lamina.
Grone Horst-Ditmar
Heap Anthony J. D.
Borden Ladner Gervais Llp
Linpac Inc.
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