Trim components for lapboard siding that are co-extruded from wood-plastic composites and polyvinyl chloride

摘要

A lapboard siding and trim system is provided in which trim siding components for board-and-batten siding and associated trim components are manufactured using a co-extrusion process, whereby wood/thermoplastic resin composite material and polyvinyl chloride thermoplastic resins are co-extruded through a single die assembly, thereby producing a trim piece having a plastic composite component, that will be visible following installation, fused under heat and pressure to the polyvinyl chloride standoff and attachment fins, that will be hidden following installation. Also provided is a lapboard siding and trim system in which siding components for clapboard siding are manufactured by extruding wood/thermoplastic resin composite material through a die. Associated trim components are manufactured using the co-extrusion process described above. The siding and trim components are completely waterproof, and installation proceeds with almost no face nailing and almost no caulk.

主权项

1. A trim piece for use with lapboard siding comprising:
a main body made from a mixture of cellulose fiber and thermoplastic resin; and a polyvinyl chloride (PVC) resin component including at least one standoff and at least one attachment fin, wherein said polyvinyl chloride resin component and said main body are molecularly fused by heat in a co-extrusion process; wherein a heat-fused interface between the main body and said PVC resin component provides molecular bonding between said PVC resin component and the main body, as well as mechanical attachment of said PVC resin component to the main body via PVC ribs of generally triangular cross section, which project from said PVC resin component, and are embedded within the main body.