Landfill liner

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 88/76 (2006.01) B09B 5/00 (2006.01) B32B 3/30 (2006.01) B65D 88/16 (2006.01) E02D 29/00 (2006.01) E02D 31/00 (2006.01)

Patent

CA 2047591

A landfill liner is provided for protecting soil from contaminated waste. The landfill liner includes a unitarily extruded sheet having a flexible central support defining opposed substantially parallel top and bottom surfaces. A plurality of soil gripping protrusions project unitarily from the bottom surface of the central support. The soil gripping protrusions are pointed to grippingly engage the soil being protected, and are disposed in a staggered array to prevent furrowing of the soil to which the liner is applied. A plurality of supporting protrusions project unitarily from the top surface of the central support. The supporting protrusions include substantially blunted or planar top surfaces for supporting a top liner thereon. The supporting protrusions are configured to optimize the transmissivity of waste material flowing therebetween. Edge regions of the central support are substantially free of protrusions to enable face-to-face overlapping of edge regions of the central support on adjacent liners.

Membrane d'étanchéité pour protéger le sol contre les déchets contaminés dans les décharges contrôlées. La membrane comprend une feuille extrudée de façon unitaire à support central souple définissant des surfaces supérieure et inférieure opposées sensiblement parallèles. Un certain nombre de saillies permettant une adhésion au sol garnissent de façon unitaire la surface inférieure du support central. Ces saillies sont taillées en pointes de façon à assurer une bonne adhésion au sol à protéger, et elles sont disposées en quinconce afin de ne pas creuser de sillons dans le sol recouvert. Un certain nombre de saillies d'appui garnissent de façon unitaire le dessus du support central. Ces dernières ont des surfaces supérieures sensiblement émoussées ou planes destinées à soutenir une membrane supérieure. Elles sont configurées de façon à optimiser la transmissivité des matières de rebut qui circulent entre elles. Les bords du support central sont essentiellement dépourvues de saillies de façon qu'ils puissent être superposés face à face sur des membranes contiguës.

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