Thermoplastic structural system and components therefor and method of making same
AssigneeRoyal Building Systems (CDN) Limited
InventorVittorio De Zen
Life of this patent
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Abstract
The invention is for a thermoplastic structural system, structural components therefor, and method of producing same in which the structural components are extruded from a thermoplastic material containing a reinforcing constituent flowable through an extrusion die, the structural components being configured for interlocking interconnection.
Claims19
Hollow rectilinear thermoplastic structural components for a structural building system in which said components have spaced longitudinally extending interlocking means for slidable interlocking engagement with adjacent mating components characterized in that each said hollow component is a co-extrusion of a hollow substrate and an impact resistant and weather protecting skin substantially thinner than the walls of said substrate, said substrate comprises a polyvinyl chloride reinforced with a reinforcing and expansion controlling constituent extruded into a hollow form having a rough surface with said co-extruded impact resistant and weather protecting skin covering the surfaces of said hollow component which are exposed as exterior walls when said hollow component is interlocked with a mating component, said skin has a thickness sufficient to cover and seal and interlock with the underlying rough substrate surfaces to present said exposed exterior walls as planar smooth surfaces.
A hollow rectilinear thermoplastic structural component having spaced longitudinally interlocking means for slidably interlocking engagement with adjacent mating components characterized in that said component is a coextrusion of a hollow substrate comprised of polyvinyl chloride containing a reinforcing and expansion controlling agent and a protective thermoplastic skin covering surfaces of said hollow substrate which are exposed as external walls of said component when same is interlocked with mating components, the walls of said substrate covered by said skin being substantially thicker than said protective skin and the width of said component between said exterior walls being of the order of several tens of times the combined thickness of said substrate and skin of said skin covered substrate walls.
Dependencies are inferred from the claim text.