Sediment control
First Claim
1. A method of making a sediment control roll, the method comprising(A) providing a precursor for a sediment control roll, the precursor comprising (i) an apertured sheet material having apertures therethrough, each of the apertures having an area of 0.01 to 1.0 in.2, and (ii) a sheet of filter material which has apertures therethrough, each of the apertures having an area of less than 0.01 in.2, and which is secured to part or all of the apertured sheet material;
- (B) shaping the precursor to provide a generally tubular body (a) which comprises first and second parts of the apertured sheet material which overlap each other, and (b) in which at least part of the filter material is secured to at least part of an interior surface of the generally tubular body; and
(C) securing the overlapping first and second parts of the apertured sheet material together.
2 Assignments
0 Petitions
Accused Products
Abstract
A sediment control roll includes a threshold member having large apertures therethrough, a hollow sediment collection chamber, and an outflow filter having small apertures therethrough. The sediment control roll can be used to collect sediment in runoff from a construction site, or to reduce removal of sediment from an existing land mass. The sediment control roll can for example be made by rolling up extruded polymeric netting with filter cloth attached thereto.
36 Citations
18 Claims
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1. A method of making a sediment control roll, the method comprising
(A) providing a precursor for a sediment control roll, the precursor comprising (i) an apertured sheet material having apertures therethrough, each of the apertures having an area of 0.01 to 1.0 in.2, and (ii) a sheet of filter material which has apertures therethrough, each of the apertures having an area of less than 0.01 in.2, and which is secured to part or all of the apertured sheet material; -
(B) shaping the precursor to provide a generally tubular body (a) which comprises first and second parts of the apertured sheet material which overlap each other, and (b) in which at least part of the filter material is secured to at least part of an interior surface of the generally tubular body; and (C) securing the overlapping first and second parts of the apertured sheet material together. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An article which comprisesan apertured sheet material which is composed of a multiplicity of polymeric strands;
- each of the polymeric strands having a thickness, viewed at right angles to the plane of the sheet material, of 0.1 to 0.2 in.;
the polymeric strands being connected together at junction points and defining a multiplicity of apertures through the sheet material, each of the apertures having an area of 0.02 to 0.25 in.2; and
the solid surface area of the sheet material being 25 to 65% of the total area of the sheet material; and2) a sheet of filter material which (i) comprises a synthetic polymer, and (ii) has apertures therethrough and has a mesh size of 80 to 600 micron, and (iii) is secured to the apertured sheet material. - View Dependent Claims (16, 17, 18)
- each of the polymeric strands having a thickness, viewed at right angles to the plane of the sheet material, of 0.1 to 0.2 in.;
Specification