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US 12,516,489 B2Granted
Polymeric waterproofing membrane
AssigneeAgru/America, Inc.
InventorMatthew Danysh
Life of this patent
Estimating the term…
Abstract
Described herein are systems and methods for forming an improved Drainliner Max with improved load bearing capability in the range of 500-15,000 or 23 to 720 kPA via improved stud placement and improved height/diameter dimensions to provide a much improved product that vastly outperforms existing systems.
Claims15
An improved geomembrane comprising:
- a substrate;
- at least three studs on the substrate, wherein the at least three studs include a dome-shaped base contacting the substrate and a column extending upward from the dome shaped base and away from the substrate, wherein a top of the column of the at least three studs is configured to contact a top layer positioned above the substrate;
- wherein the at least three studs are configured in adjacent offset rows across a surface of the substrate;
- a stud density defined on the substrate via placement of the at least three studs to provide a three-dimensional contour on the substrate wherein the stud density provides uniform stud spacing of 6 mm to 12 mm in all of the row spacing, column spacing, and diagonal spacing dimensions between all studs of the substrate to configure any group of three adjacent studs in a triangular relationship across the surface of the substrate;
- and
- wherein the stud density allows the substrate to provide a support weight of 1,500 to 15,000 pounds per square foot or 23 to 720 kPa.
3 more elements
A method for forming an improved geomembrane comprising:
- extruding a molten polymer onto a calendaring roller gap;
- pressing the molten polymer into at least three stud cavities defined on a roller;
- cooling the molten polymer to solidify the molten polymer into a substrate and to form at least three studs on the substrate wherein the studs conform to a shape of the at least three stud cavities defined on the roller wherein the at least three studs include a dome-shaped base contacting the substrate and a column extending upward from the dome shaped base and away from the substrate, wherein a top of the column of the at least three studs are configured to contact a top layer positioned above the substrate;
- wherein the at least three studs are configured in adjacent offset rows across a surface of the substrate;
- defining a stud density on the substrate via placement of the at least two studs to provide a three-dimensional contour on the substrate wherein the stud density provides uniform stud spacing of 6 mm to 12 mm in all of the row spacing, column spacing, and diagonal spacing dimensions between all studs of the substrate to configure any group of three adjacent studs in a triangular relationship across the surface of the substrate;
- and
- forming the stud density so the substrate has a support weight of 1,500 to 15,000 pounds per square foot or 23 to 720 kPa.
4 more elements
Dependencies are inferred from the claim text.