Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1996-07-12
1997-12-09
Choi, Kathleen
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
4283171, 4283177, 4283193, 4283197, 428334, 428339, B32B 700
Patent
active
056958706
ABSTRACT:
Disclosed is a laminated foam insulation board having enhanced strength and resistance to bending and breaking. The board comprises a panel of an insulating plastic foam material and a thermoplastic facer film adhered to opposite surfaces of the panel. The facer films have an ultimate elongation of less than 200 percent in both machine and transverse directions, a yield tensile strength of at least 7,000 pounds per square inch (48,400 kilopascals) in both machine and transverse directions, and a 1 percent secant modulus of at least 200,000 pounds per square inch (1,380 megapascals) in both machine and transverse directions. The degree of adhesion is about 100 grams per inch or more (about 39.4 grams per centimeter or more) between the facer film and the foam panel.
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Bibee Douglas V.
Deibel Ronald D.
Kelch Robert H.
Kocsis Deborah L.
Choi Kathleen
Dean Jr. J. Robert
The Dow Chemical Company
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