A method for producing a flexible pipe and a flexible pipe

A method for producing a flexible pipe for offshore transport of fluids, wherein said pipe having a length Lp and a bore with a diameter DBore and comprises at least one continuous extruded sheath of polymer material, wherein the method comprises extruding said at least one continuous extruded sheath of polymer material is extruded continuously along the length of the pipe, wherein at least one zone A and at least one zone B are extruded along the length of the pipe and wherein:

• zone A is extruded from a polymer comprising polypropylene (PP), and where the extruded sheath in zone A has a Youngs modulus EA;
• zone B is extruded from a thermoplastic vulcanizate polymer (TPV), and the extruded sheath in zone B has a Youngs modulus EB, where EB<0.9×EA;
• and wherein the polymers forming zone A and B are switched during extrusion.

A flexible pipe for offshore transport of fluids, said pipe having a length LP and a bore with a diameter DB, wherein said flexible pipe comprises at least one continuous extruded sheath of polymer material, said at least one continuous extruded sheath of polymer material comprising at least one zone A and at least one zone B along the length of the pipe, said sheath in zone A comprises polypropylene (PP) and having a Youngs modulus EA, said sheath in zone B comprises a thermoplastic vulcanizate polymer (TPV) and having a Youngs modulus EB, wherein EB<0.9×EA, and wherein said sheath comprising zone A and zone B is continuous along the length of the pipe.