US 5,700,555 A · Sandable and stainable plastic/wood composite

Abstract

A composite article includes a first zone made entirely of plastic and a second zone made of plastic and natural fiber. The first and second zones are integral and are continuously coextruded. The ratio of natural fiber in the second zone is between 10% and 55%. The outer surface of the second zone includes embossing to resemble wood grain. The outer surface has sufficient porosity so as to hold and retain wood stain and paint so that the composite article is stainable to resemble genuine wood. The composition of the second zone includes between 45% and 90% polyvinylchloride, between 10% and 55% natural fiber, and external lubricate and a fusion enhancer. A color adjusting agent such as titanium dioxide, and coloring agents may also be added.

Claims16

Dependent claims

A composite article of manufacture comprising:

a first zone, said first zone being comprised of a first plastic;
and
a second zone, said second zone being comprised of
a second plastic, and
a natural cellulose-containing fiber,
a paraffin or hydrocarbon wax blend metal release agent to control the porosity of said second zone having an outer surface, said outer surface being porous to hold and retain wood stain or paint;
and
an oxidized polyethylene fusion enhancer to form a homogeneous melt of the natural cellulose-containing fiber and the second plastic and modifies the effect of the porosity aid which deters fusion, yet retains the porosity of the second zone;
and
said first and second zones being integral and being coextruded together.

7 more elements

Dependencies are inferred from the claim text.

Sandable and stainable plastic/wood composite

Life of this patent

Sandable and stainable plastic/wood composite

Life of this patent

Abstract

Claims16