Fiberglass sandwich panel
AssigneeInternational Paper Company
InventorsDavid W. Buzza, Frederick W. Schoen, Harold P. Lovelace
Life of this patent
Estimating the term…
Abstract
A roofing system that provides a safe, long lasting, leak-free and maintenance-free insulated roof for flat roof applications. More particularly, a sandwich panel comprises an inner foam core, a fiberglass skin fully encapsulating and surrounding the core, and a gel coating surrounding the skin. The panel has two substantially parallel surfaces and a peripheral edge having a step edge. A plurality of panels having two different shapes and relative dimensions are alternately secured to purlins to form the roofing system so that half of the panels can be easily removed without affecting the rest of the roof.
Claims14
An insulated and corrosion resistant sandwich panel having a length greater than 8 feet and a width greater than 4 feet, which comprises a foam core having a plurality of depthwise fiberglass ribs extending therethrough, a fiberglass skin fully encapsulating and cured in integral contact with said core, and a gel coating fully encapsulating said skin;
- wherein said foam core comprises a plurality of preformed foam blocks each having a length of 8 feet and a width of 4 feet and a resin filling inserted between each of said blocks, said blocks being arranged such that said length of said blocks is oriented with said length of the panel;
- wherein the panel has a first surface and a second surface substantially parallel thereto and a peripheral edge having a step therein, said ribs connecting said fiberglass skin on said first surface to said fiberglass skin on said second surface.
Dependencies are inferred from the claim text.