发明名称 |
folha contÍnua nço-tecida, e, mÉtodos para isolar acusticamente um espaÇo de uma fonte de ruÍdo e para isolar termicamente um espaÇo. |
摘要 |
New nonwoven fibrous webs are taught which comprise a collected mass of a) directly formed fibers disposed within the web in a C-shaped cross-sectional configuration and b) staple fibers having a crimp of at least 15% dispersed among the directly formed fibers in an amount of at least 5% the weight of the directly formed fibers. The web is lofty but free of macrovoids. Preferably, the web has a filling ratio of at least 50 and a light transmittance variation of about 2% or less. Typically, fibers within the web are bonded together at points of fiber intersection, preferably with autogenous bonds, to provide a compression-resistant matrix. The webs are especially useful as acoustic and thermal insulation. |
申请公布号 |
BR0315655(B1) |
申请公布日期 |
2013.06.04 |
申请号 |
BR20030315655 |
申请日期 |
2003.09.25 |
申请人 |
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发明人 |
DAVID A. OLSON;JONATHAN H. ALEXANDER;MICHAEL R. BERRIGAN |
分类号 |
D04H3/16;D04H1/00;D04H1/42 |
主分类号 |
D04H3/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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