Composite roofing panel

Details Composite roofing panel Composite roofing panel

1982-02-08

1983-11-29

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

156 78, 428285, 428286, 4283044, 4283066, 4283166, B32B 310, B32B 520

Patent

active

044181086

ABSTRACT:
A composite panel including a fibrous glass board and foamed-in-place plastic foam has a perforated sheet at the foam-fiberglass interface, there being at least two holes per square inch in the perforated sheet, the diameter of the holes being less than 0.06 of an inch, and the amount of open area represented by the holes being less than 1.5 percent of the total area of the sheet.

REFERENCES:
patent: 4088805 (1978-05-01), Wiegand
patent: 4229473 (1980-10-01), Elber
patent: 4279958 (1981-07-01), Ahmad

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