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GLASS FIRE STRENGTHEN MINERAL BASED ACUTIC PLACE
GLASS FIRE STRENGTHEN MINERAL BASED ACUTIC PLACE
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机译:玻璃火增强了基于矿产的地方
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摘要
A wet laid basemat for an acoustical ceiling tile comprising on a dry weight basis, 50% or more mineral wool fiber, including shot, less than 9% binder, and between 5 and 20% chopped strand glass fiber, and, optionally, minor amounts of other constituents, whereby the chopped strand glass fibers serve to promote and/or maintain voids in the mat such that the dry basemat has a density of between about 7½ to about 10½ lbs. per cubic foot and an NRC substantially greater than 0.55.
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