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US 2010/0136318 A1Published application
Construction boards with improved facers
AssigneeFirestone Building Products Company, LLC
InventorsJohn B. Letts, Robert C. Harrison
Life of this patent
Estimating the term…
Abstract
A construction board (10) comprising a cellular body and at least one facer (22,23), where the at least one cellulosic facer (22,23) is characterized by a burst strength of at least 250 kPa pursuant to T403 om-02 (TAPPI).
Claims20
A construction board comprising:
- a cellular body;
- and
- at least one cellulosic facer, where the at least one cellulosic facer is characterized by a burst strength of at least 250 kPa pursuant to T403 om-02 (TAPPI), where the at least one cellulosic facer is characterized by a basis weight of least 200 grams per square meter pursuant to T410 om-02 (TAPPI), where the at least one cellulosic facer has a thickness of from about 5 to about 20 mils, where the at least one cellulosic facer is characterized by a machine direction tensile strength pursuant to T494 om-01 (TAPPI) of at least 7.5 KN/m, and wherein the thickness of the at least one cellulosic facer is uniform within about ±3 mil.
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Dependencies are inferred from the claim text.