Back to results
US 5,626,939 AGranted
Synthetic wood from waste fibrous waste products
AssigneeGeorgia Tech
InventorsAbraham M. Kotlair, Daniel P. Fountain
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeGeorgia Tech
InventorsAbraham M. Kotlair, Daniel P. Fountain
Estimating the term…
A composition of matter and a process for the preparation thereof is disclosed for a fibrous composite (e.g., synthetic wood). The fibrous composite contains 50 to 95% by weight carpet and 5 to 50% by weight of a structural adhesive. Structural adhesives effective in this application would include phenol-formaldehyde resins, either of the resole or novalac type, phenol-formaldehyde resins that have at least one other co-monomer present, e.g., bis-phenol A, resorcinol, and other substituted phenols, urea-formaldehyde resins, melamine urea formaldehyde resins, tannin-phenol-formaldehyde resins, diisocyanate resin, epoxy resins, crosslinkable polyvinyl acetate, proteins, e.g., soy flour, blood and polyester resins. The process steps necessary for the formation of the fibrous composite would include at least the steps of shredding the carpet without component separation thereof to form carpet fibers, coating a resin on the carpet fibers to form resin coated fibers, curing the resin coated fibers under a pressure and a temperature sufficient to cure the resin and form a fibrous composite, and cooling the composite. The carpet is typically shredded to produce fibers of from 1/8 to 3/4 of an inch. In one aspect of the invention, fabric, either natural or synthetic is added to the shredded carpet.
A fibrous composite which comprises:
A process for the formation of a fibrous composite from a carpet comprising a face yarn, a backing and a fiber adhesive, comprising the steps of:
A process for the formation of a fibrous composite from a carpet comprising a face yarn, a backing and a fiber adhesive, and a fabric, comprising the steps of:
A process for the formation of a fibrous composite from a fabric comprising the steps of:
Dependencies are inferred from the claim text.