Composite products comprising cellulosic materials and synthetic resins and methods of making the same
AssigneeCorrect Building Products, L.L.C.
InventorMartin Grohman
Life of this patent
Estimating the term…
Abstract
New wood-synthetic resin composite products and methods of forming these products are provided. The products comprise a cellulosic or fibrous material and polypropylene (preferably reactor flake polypropylene). The products are formed by passing ingredients including the fibrous material and polypropylene through an extruder (preferably a twin screw extruder) at temperatures of from about 150-260° C. The extruded composite products have physical properties very similar to those of natural wood, including high tensile strengths, high compressive strengths, and high densities.
Claims8
An extruded, wood-synthetic resin composite product in the form of a self-sustaining body formed from a mixture comprising a fibrous material and reactor flake polypropylene, wherein said composite product has an ASTM D-6109 flexural modulus of from about 600,000-1,100,000 psi.
Dependencies are inferred from the claim text.