Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Reexamination Certificate
2007-01-26
2010-02-23
Sample, David R (Department: 1794)
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
C428S141000, C525S191000, C525S232000, C525S240000, C524S425000, C524S430000, C524S515000
Reexamination Certificate
active
07666491
ABSTRACT:
In one embodiment, the present invention relates to a membrane for use as an outdoor building material comprising a non-reinforced TPO outdoor building material membrane composed of a single ply embossed thermoplastic polyolefin polymer wherein the embossed membrane has a stretchability in the range of about 5 lbf to about 30 lbf, as tested with about a 30-mil thickness sample under the “stretchability test.” In yet another embodiment, the present invention relates to a method of applying a non-reinforced TPO outdoor building material membrane to a motor home roof comprising the step of: a) applying a non-reinforced TPO membrane to RV roof wood deck, wherein the membrane is composed of a thermoplastic polyolefin polymer with at least one of the following ingredients of a fire retardant, a UV and thermal stabilizers, a titanium dioxide and a calcium carbonate and wherein the membrane has a stretchability in the range of about 5 lbf to about 30 lbf, as tested with about a 30-mil thickness sample under the “stretchability test” and wherein the roofing membrane has a whiteness of at least an L* value of 90 as measured by the Whiteness Test; and b) adhering the non-reinforced TPO membrane to the wood deck via factory or field applied adhesive with a minimum 4 PLI of peel strength under the ASTM D413 peel test.
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Nebesnak Edward
Yang Li-Ying
Building Materials Investment Corporation
Davis William J.
Greenberg & Traurig, LLP
Sample David R
Simone Catherine
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