Asymmetrical fabrics composition for winding applications in pipe relining
AssigneeOwens Corning Intellectual Capital, LLC
InventorAntoni Serarols Beltran
Life of this patent
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Abstract
A continuous fabric for use in forming a repair liner for reinforcing a pipe. The fabric includes a top layer and one or more bottom layers. The width of the top layer is less than the width of the continuous fabric and the density of the top layer is less than the density of at least one of the at least one or more bottom layers. The top layer may serve as a guide for winding the fabric in an overlapping pattern about a mandrel so that the essentially only the top layer is visible in the fabric winding.
Claims24
A method of manufacturing a repair liner for reinforcing a pipe, the method comprising:
- selecting a continuous fabric having a top layer, a top intermediate layer, and a bottom intermediate layer, wherein a width of the top layer is less than a width of the continuous fabric and a fiber density of the top layer is less than a fiber density of the bottom intermediate layer;
- and
- wrapping the continuous fabric around a mandrel in an orientation with the top layer outward and in an overlapping pattern with the top layer essentially covering a length of the liner,
- wherein the width of the top layer is less than ⅓ the width of the continuous fabric.
A method of manufacturing a repair liner for reinforcing a pipe, the method comprising:
- selecting a continuous fabric having a top layer, a top intermediate layer, and a bottom intermediate layer, wherein a width of the top layer is less than a width of the continuous fabric and a fiber density of the top layer is less than a fiber density of the bottom intermediate layer;
- and
- wrapping the continuous fabric around a mandrel in an orientation with the top layer outward and in an overlapping pattern with the top layer essentially covering a length of the liner,
- wherein the top layer includes a plurality of fibers, and
- wherein the fibers are randomly-oriented in the top layer.
A method of manufacturing a repair liner for reinforcing a pipe, the method comprising:
- selecting a continuous fabric having a top layer, a top intermediate layer, and a bottom intermediate layer, wherein a width of the top layer is less than a width of the continuous fabric and a fiber density of the top layer is less than a fiber density of the bottom intermediate layer;
- and
- wrapping the continuous fabric around a mandrel in an orientation with the top layer outward and in an overlapping pattern with the top layer essentially covering a length of the liner,
- wherein the bottom intermediate layer is thinner along the outer edges of the continuous fabric than along a centerline of the continuous fabric.
Dependencies are inferred from the claim text.