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US 11,958,259 B2Granted
Thermoplastic composite
AssigneeBaker Hughes Energy Technology UK Limited
InventorsMajeed Al-Zubaidy, Neville Dodds, Vineet Jha, James Latto, David Finch
Life of this patent
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Abstract
A method of making a flexible pipe layer, which method comprises: commingling polymer filaments and carbon fibre filaments to form an intimate mixture, forming yarns of the commingled filaments, forming the yarns into a tape, and applying the tape to a pipe body to form a flexible pipe layer.
Claims16
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.
8 more elements
A method of manufacturing a flexible pipe layer for a flexible pipe, the method comprising:
- arranging a first plurality of filaments having a first concentration of carbon fibre, the arranging comprising:
- commingling polymer filaments and carbon fibre filaments to form a first intimate mixture;
- 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;
- arranging a second plurality of filaments having a second concentration of carbon fibre, the arranging comprising:
- commingling polymer filaments and carbon fibre filaments to form a second intimate mixture;
- forming second yarns from the second intimate mixture;
- and
- 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.
9 more elements
Dependencies are inferred from the claim text.