Biodegradable slit and expanded erosion control cover
AssigneeResearch Products Corporation
InventorsM. Sohail Aslam, James M. Buckler
Life of this patent
Estimating the term…
Abstract
An erosion control blanket is made of recycled, biodegradable slit and expanded sheets of paper. A plurality of layers are provided and are oriented such that the slope of the baffles in the grid pattern of the paper may be disposed in a positive or negative direction relative to the slope. The upper layers promote runoff of water for reducing erosion. The lower layers trap the water which passes through the blanket, passing it into the soil, and trap loose soil particles. The open grid pattern provided by the slit and expanded paper provides ample air space for promoting the germination and growth of seeds.
Claims15
An erosion control blanket for controlling and limiting the erosion of soil after seeding and during revegetation, the blanket comprising:
- a. a base layer of sheet material, said base layer of sheet material begin slit and expanded for defining a plurality of air spaces of a first predetermined size;
- b. a second layer of sheet material, said second layer of sheet material being slit and expanded for defining a plurality of air spaces of predetermined size smaller than the air spaces of said first predetermined size, each sheet of slit and expanded sheet material comprising a flat, generally planar sheet of pliable, nonstretchable material having a plurality of elongated parallel, through the slits, these slits defining the perimeter of said air spaces when the material is expanded in a direction generally orthogonal to the direction of said elongates slits;
- and
- c. means for securing the layers in overlying relationship with one another.
An erosion control blanket for controlling and limiting the erosion of soil after seeding and during revegetation, the blanket comprising:
- a. a base layer of slit and expanded sheet material, said base sheet material being slit and expanded for defining a plurality of air spaces of a first predetermined size;
- b. a second layer of slit and expanded sheet material, said second layer of sheet material being slit and expanded for defining a plurality of air spaces of a second predetermined size smaller than the air spaces of said first predetermined size;
- c. means for securing the layers in overlying relationship with one another, wherein each sheet of said slit and expanded sheet material comprises a flat, planar sheet of pliable, non-stretchable material having a plurality of elongate parallel, through slits and wherein said slits define the perimeter of air spaces when the material is expanded in a direction generally orthogonal to the elongate slits, the sheet material, when expanded, defining an intersecting grid pattern having elongate runners intersecting at baffles defined by the portion of material disposed between adjacent slits, and wherein each of the runners intersects the plane of the sheet material at an acute angle defining a slope angle for the respective sheet, said base layer being of one slope and said second layer being of another slope.
Dependencies are inferred from the claim text.