Weather resistant panels
AssigneeAcell Holdings Limited
InventorsIain Steel, Aldino Albertelli
Life of this patent
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Abstract
The use is described of rigid foam cores in panels, especially doors, of the kind comprising a foam core (22) between two molded skins (8,10). The weather-resistance, especially the resistance to thermally-induced bowing, of such panels is improved by forming the panel of at least one vacuum-formed thermoplastics skin (8,10) adhesively bonded to a substantially open-cell, rigid foam core (22). If the foam has frangible cell walls, it can be conformed to accommodate the depressed zones of a molded overlying door skin (8,10) by crumbling under compression, with fracture of the cell walls to accommodate the zones. A preferred open-cell rigid foam is a phenolic foam reinforced with finely divided particulate filler.
Claims31
A panel comprising a substantially open-cell, rigid foam core and at least one vacuum formed thermoplastic skin adhesively bonded to said foam core, the panel is in the form of a door.
A moulded panel comprising at least one thermoplastics skin having depressed zones adhesively bonded to a foamed plastics core wherein the core comprises a substantially rigid plastics foam having frangible cell walls and portions of the core behind the depressed zones have been compressed with fracture of the cell walls of the foam to accommodate said zones, the panel is in the form of a door.
A method of an open cell foam as a rigid core for a panel having at least one thermoplastics skin to improve the weather resistance of the panel, comprising the step of using the panel as a door.
Dependencies are inferred from the claim text.