Patent ID: 11958259
Assignee: BAKER HUGHES ENERGY TECHNOLOGY UK LIMITED
Field: Surface technology, coating (Chemistry)
Classification: CPC B  C  D  F | IPC B  C  D

Claim 0:
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.