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US 5,635,125 AGranted
Method for forming simulated shake shingles
AssigneeRe-New Wood, Incorporated
InventorsThomas J. Ternes, Kimberly K. Ternes, Barry L. West
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Abstract
An artificial shake type shingle includes of a molded composite of wood sawdust particles and ground-up recycled polyvinyl chloride (PVC) particles. The PVC particles are preferably formed from recycled water or garden hose, preferably those with reinforcing fibers therein, which composition helps to attain a strong building material product.
Claims9
A method for forming simulated wood products comprising the steps of:
- grinding a waste fiber reinforced polymeric material to a size sufficient to pass a 3/8" (10 mm) screen size;
- providing wood particles of a size greater than 1/8" (3 mm) but small enough to pass a 3/8" (10 mm) screen size, said wood particles having a moisture content of 40-60% humidity;
- homogeneously mixing said ground fiber reinforced polymeric material and wood particles in a weight ratio within the range of 55:44 to 65:34 respectively, along with an ultraviolet protectant, a fire retardant, and a colorant to produce a mixed product;
- extruding said mixed product under temperature and pressure conditions such that said fiber of said fiber reinforced polymeric material will not melt, and any moisture in said wood particles is released to form an extruded product;
- and
- introducing said extruded product into an injection molding machine to form said simulated wood product.
3 more elements
Dependencies are inferred from the claim text.