US 4,073,997 AGranted

Composite panel

AssigneeOwens-Corning Fiberglas Corporation

InventorsDavid O. Richards, Isaac P. Jones, Homer W. Duffee, Charles E. Nutter

Life of this patent

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Abstract

A composite panel is provided which comprises an organic foam core with layers of inorganic fibers on opposite major surfaces of the core. The fibrous layers are affixed to the core in a manner such that they are functionally integral therewith, thereby providing dimensional stability for the core. In a preferred embodiment, the panel is embodied in roof insulation which consists of a core of organic foam with a mat of inorganic fibers located on an upper surface of the foam core and a layer of inorganic fibers located on a lower surface of the core. The lower surface of the insulation is affixed to an underlying roof structure by a layer of adhesive and specifically asphalt. Alternate layers of asphalt and fibrous mats are applied over the upper mat of the inorganic fibers to complete the roof insulation system.

Claims13

Dependent claims

A roof insulating system comprising a roof deck;

an adhesive layer on said roof deck;
roof insulation on said layer, said roof insulation comprising a slab of expanded organic polymeric material having two major, substantially planar, substantially parallel surfaces and a peripheral edge of predetermined shape, said slab having a thickness from about one-half inch to about four inches, a thin mat of substantially randomly-disposed glass fibers on the upper major surface of said slab with the mat disposed substantially uniformly over said entire major surface, said fibers being held together by a binder, the polymeric material at the upper edge of said slab at least partially penetrating interstices among the fibers of said mat in a manner to be functionally integral therewith, and a layer of glass fibers affixed to the lower major surface of said slab, the polymeric material at the lower surface of said slab at least partially penetrating interstices among the fibers of the latter layer in a manner to be functionally integral therewith;
a second adhesive layer on the upper surface of said mat;
and a mat of fibers impregnated with asphalt on top of said second layer.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 05/724,129Filed 17 Sep 1976 · continuation
Priority: 9 Jun 1972
Granted: 14 Feb 1978
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

B32B 5/245
One layer being a fibrous or filamentary layer: another layer next to it being a foam layer
B29C 44/321
Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements: the preformed part being a lining, e.g. a film or a support…
B29C 44/326
Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements: joining the preformed parts, e.g. to make flat or profiled…
B32B 5/18
Layered products characterised by the non- homogeneity or physical structure , i.e. comprising a fibrous, filamentary, particulate or foam…