Thermoplastic structural components and structures formed therefrom
AssigneeRoyal Building Systems (CDN) Limited
InventorVittorio De Zen
Life of this patent
Estimating the term…
Abstract
Thermoplastic structural components utilized within building construction as permanent formwork. The components formed with openings along a length which serve to allow concrete to flow from one form to adjacent forms. Thus, filling the components forming a surrounding wall of a building. The openings allow for air circulation within components forming a roof assembly. The components are co-extruded with a protective skin along outer surfaces thereof. Grooves are provided along the length of the component for mating with interlocking flanges of a box connector. Planar spaced walls are provided within each component and have a series of openings along a length thereof.
Claims16
An elongated hollow generally rectilinear thermoplastic structural component for use in the erection of a thermoplastic building structure, said component comprising a coextrusion of a hollow substrate of reinforced thermoplastic material having spaced substantially planar walls held in spaced relation by transverse walls or webs and having interlocking means extending the length of said planar walls and a smooth protective coextruded thermoplastic skin covering the outer surfaces of said planar substrate walls, said transverse walls or webs having material cut therefrom to provide a plurality of openings along the length thereof and inwardly of said interlocking means, the material cut from said walls or webs providing material suitable for use as substrate material in the coextrusion of a subsequent component.
An elongated thermoplastic building component as claimed in claim 11 in which said substrate material is a polyvinyl chloride containing a reinforcing and expansion controlling agent.
A method of manufacturing hollow rectilinear thermoplastic building components adapted for interlocking engagement to form building structures, said method comprising co-extruding said components to provide spaced planar walls held in spaced relation by transverse webs and presenting interlocking formations for interlocking engagement with mating components, salad building components being formed of substrate material containing a reinforcing agent, while co-extruding a thin smooth thermoplastic skin to cover the outer surfaces of said planar walls, cutting material from said transverse walls and webs to provide openings therethrough, recovering said material cut from said transverse walls or webs, and reusing said recovered materials as substrate material in the coextrusion of a subsequent component.
Dependencies are inferred from the claim text.