Patent ID: 9400067
Filing Date: 2016-07-26
CPC Classification: B29C,F16L

Claim Text:
1. A method for manufacturing a flexible tubular underwater pipe intended to transport hydrocarbons, the method comprising: providing a leakproof tubular structure covered with at least one layer of armor wires wound in a first helix with a long pitch around said tubular structure wherein said armor wires are able to take up axial forces on said pipe when said tubular structure is stretched axially; winding at least one continuous longitudinal element made of a deformable material in a second helix with short pitch around said layer of armor wires to form a holding layer capable of taking up radial forces of said armor wires when said tubular structure contracts axially; and stretching said at least one continuous longitudinal element in said second helix during said winding under a longitudinal tension T wherein σ