Geocomposite liner
AssigneeSLT Environmental, Inc.
InventorsJohn L. Bohrer, Harald Unger
Life of this patent
Estimating the term…
Abstract
A geocomposite liner having a first fibrous layer, a second fibrous layer, and a non-fibrous layer secured between the first and second fibrous layers. A plurality of fibers extend from the non-fibrous layer such that the ends of the fibers extend outwardly of an outer surface of the first fibrous layer. The ends are heat fused so as to secure the ends outwardly of the outer surface of the first fibrous layer. The second fibrous layer is needle punched such that the fibers extend from the second fibrous layer through the non-fibrous layer. The ends of the fibers are heat fused such that the ends have a greater diameter exterior of the first fibrous layer than interior of the first fibrous layer. Some of the ends are heat fused together on the outer surface of the first fibrous layer.
Claims20
A geocomposite liner comprising:
- a first fibrous layer;
- a second fibrous layer;
- and
- a non-fibrous layer secured between said first and second fibrous layers, wherein a plurality of fibers extend from said non-fibrous layer such that ends of said fibers extend outwardly of an outer surface of said first fibrous layer, said ends being heat fused so as to secure said ends outwardly of said outer surface.
A geocomposite liner comprising:
- a first fibrous layer;
- a second fibrous layer;
- and
- a sodium bentonite layer retained between said first and second fibrous layers, said second fibrous layer being needle punched such that fibers of said second fibrous layer extend through said sodium bentonite layer, said fibers having ends extending outwardly of an exterior surface of said first fibrous layer, said ends being heat fused.
A method of forming a geocomposite liner comprising the steps of:
- placing a layer of sodium bentonite material between a first fibrous layer and a second fibrous layer;
- needle punching said second fibrous layer such that fibers extend through said sodium bentonite layer and said fibers having ends extending outwardly of said first fibrous layer;
- and
- heat fusing the ends of said fibers exterior of the first fibrous layer.
Dependencies are inferred from the claim text.