CPC B29D 23/001 (2013.01) [B29C 53/60 (2013.01); B32B 1/08 (2013.01); B32B 5/08 (2013.01); B32B 27/08 (2013.01); B32B 27/12 (2013.01); B32B 27/304 (2013.01); C08J 5/042 (2013.01); C08K 7/06 (2013.01); D02G 3/16 (2013.01); D02G 3/402 (2013.01); D02G 3/447 (2013.01); B32B 2262/0238 (2013.01); B32B 2262/106 (2013.01); B32B 2307/30 (2013.01); B32B 2597/00 (2013.01); C08J 2327/16 (2013.01); D10B 2321/042 (2013.01); D10B 2331/02 (2013.01); D10B 2331/061 (2013.01)] | 16 Claims |
1. A flexible pipe, comprising:
a pipe layer that comprises:
a first region characterized by a thermoplastic composite comprising a polymer and carbon fibre, wherein carbon fibre is present in a first concentration made by arranging a first plurality of filaments having a first concentration of carbon fibre, commingling polymer filaments and carbon fibre filaments to form a first intimate mixture, and forming first yarns from the first intimate mixture and compressing or extruding first yarns to form a first tape, wherein the first tape is characterized by a first concentration of carbon fibre; and
a second region characterized by one or more of:
a thermoplastic composite comprising a polymer and carbon fibre, wherein carbon fibre is present in a second concentration; and
a polymer composition, wherein the second region is formed by arranging a second plurality of filaments having a second concentration of carbon fibre by commingling polymer filaments and carbon fibre filaments to form a second intimate mixture and forming second yarns from the second intimate mixture;
wherein the pipe layer is formed by:
compressing or extruding the second yarns to form a second tape, wherein the second tape is characterized by a second concentration of carbon fibre; and
applying predetermined amounts of the first tape and the second tape to a pipe body to form a flexible pipe layer.
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