Polyisocyanurate boards with reduced moisture absorbency and lower air permeability and related methods
First Claim
1. A composite iso recovery board comprising:
- a foam core selected from the group consisting of polyisocyanurate and polyurethane materials and mixtures thereof; and
first and second facers, between which said foam core is sandwiched, said facers comprising a polymer sheet selected from the group consisting of polyamides and polycarbonates.
4 Assignments
0 Petitions
Accused Products
Abstract
A composite iso board (10) comprises a foam core (11) selected from the group consisting of polyisocyanurate and polyurethane materials and mixtures thereof; and first and second facers (12, 13), between which the foam core is sandwiched, the facers comprising a sheet selected from the group consisting of polyamides and polycarbonates. A method of reroofing a roof comprises applying composite iso boards of the present invention to a roof deck; and, applying a weather protective layer over the iso boards. A continuous method of making a composite iso board comprising the steps of feeding a first layer of facer material into a laminator (24); depositing a foamable polymer liquid onto the first layer (12); feeding a second layer of facer material (13) into the laminator above the foamable polymer liquid; allowing the polymer liquid to rise between the first and second facer materials forming polymer foam (42) of a predetermined thickness; curing the polymer foam under heat to create the iso board; cutting the iso board to desired lengths; and stacking said boards in bundles.
72 Citations
10 Claims
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1. A composite iso recovery board comprising:
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a foam core selected from the group consisting of polyisocyanurate and polyurethane materials and mixtures thereof; and first and second facers, between which said foam core is sandwiched, said facers comprising a polymer sheet selected from the group consisting of polyamides and polycarbonates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification