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US 5,401,118 AGranted
Composition and method for covering soil
OwnerFritz Kramerinventor
Life of this patent
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OwnerFritz Kramerinventor
Estimating the term…
A composition and method for forming a water-impermeable barrier in soil such as for use in closing a waste disposal cell. The composition comprises a water-impermeable sheet to each side of which has been applied an adhesive such as polybutene. The sheet is a substantially nonflammable, water-impermeable, highly stretchable film, preferably a plasticized polyvinyl chloride-based or very low density polyethylene film. The composition is applied to a first layer of soil such as a landfill site and covered with a second layer of soil. When the first layer is sloped, several rows of the composition placed in adjacent, overlapping relationship, starting at the bottom of the slope. The soil particles in the first and second soil layers adhere to the sheet and enable the slope of the first layer to approach the shear angle for that type of soil. Thus, the disposal cell can have steeper sides and hold more waste than otherwise.
A composition for use in forming a barrier to water penetration through soil, said composition comprising:
A method for covering a first layer of soil to impede the flow of water into said soil surface, said method comprising the steps of:
A method of closing a waste disposal cell, said cell containing waste, said method comprising the steps of:
Dependencies are inferred from the claim text.