Tubular liner for rehabilitating underground and surface pipes and pipelines
AssigneesSanexen Environmental Services Inc., Niedner Inc.
InventorsSylvain Morissette, Martin Bureau, Sylvain Boissonneault, Joël Héraud, Dave Lord, Pascal Michaud, Gilles Gagnon
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Abstract
A seamless tubular liner for repairing an underground or surface pipe is disclosed, including circumferential wefts consisting of slivers comprising a plurality of staple fibers bundled together, the slivers adapted to elongate through disentanglement of the bundled staple fibers when the seamless tubular liner is subjected to an inflation pressure such that the diameter of the tubular liner is able to expand to accommodate variations of diameter of the pipe being repaired.
Claims10
A seamless tubular liner for repairing a pipe in a cured in place pipe process, the tubular liner having a diameter and comprising a circular woven sheath including longitudinal warps consisting of filament yarns extending along a longitudinal axis of the tubular liner and circumferential wefts consisting of slivers oriented substantially perpendicular to the longitudinal warps, the slivers comprising a plurality of staple fibers bundled together to form a continuous strand, the slivers adapted to elongate through disentanglement of the bundled staple fibers when the tubular liner is subjected to an inflation pressure such that the diameter of the tubular liner is able to expand to accommodate variations of diameter of the pipe being repaired.
Dependencies are inferred from the claim text.