Wound multi-layer tube having one or more embossed plies

Details Wound multi-layer tube having one or more embossed plies Wound multi-layer tube having one or more embossed plies

B - Operations, Transporting

31

C

B31C 99/00 (2009.01) B29C 53/56 (2006.01) B29D 23/00 (2006.01) B31C 1/00 (2006.01) B31C 3/00 (2006.01) B31F 1/07 (2006.01) B32B 1/08 (2006.01) B32B 29/00 (2006.01) B65H 75/10 (2006.01)

Patent

CA 2445090

A spirally or convolutely wound multi-layer tube includes one or more plies or layers that have embossments formed therein and projecting from one or both sides of each such ply or layer. The embossments increase the effective caliper and volume of the ply without adding mass. The embossments can abut an adjacent ply or layer of the tube and space such adjacent ply or layer from regions of the embossed ply or layer between the embossments, thereby forming void spaces in the tube wall.

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