Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
2006-09-12
2006-09-12
Yao, Sam Chuan (Department: 1733)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C156S285000, C156S309900, C264S101000, C428S095000, C428S096000
Reexamination Certificate
active
07105069
ABSTRACT:
Sound absorbing/sound blocking products, including trim products formed from a porous fibrous layer backed by a sound absorbing layer and a sound blocking layer for use within vehicles, and methods of making same, are provided. A porous fibrous layer structure including a fibrous layer backing is heated to achieve a fluid or semi-fluid state and then subjected to vacuum to draw air through the fibrous layer backing to create a porous structure. A layer of sound absorbing and a layer of sound blocking material may be applied to the porous fibrous layer backing to provide improved acoustic properties. An underlayment may further be included to provide selected areas of increased thickness and provide tailoring of sound attenuation.
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Allison Timothy J.
Lash Ronnie
Owenby Carroll L.
Wilson Ernie
Collins & Aikman Products & Co.
Grossman Tucker Perreault & Pfleger PLLC
Yao Sam Chuan
LandOfFree
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