Low porosity facings for acoustic applications

Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Nonwoven fabric – Including an additional nonwoven fabric

Reexamination Certificate

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Details

C442S400000, C442S409000, C442S387000, C442S388000, C442S393000, C442S417000, C264S113000

Reexamination Certificate

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07618907

ABSTRACT:
A fibrous blanket material is provided having a first fibrous layer selected from a group of fibers consisting of polyester, polypropylene, polyethylene, fiberglass, natural fibers, nylon, rayon and blends thereof and a layer of meltblown polypropylene fibers. In an alternative embodiment the blanket may also include a second fibrous layer made of the same material as the first layer where the layer of meltblown polypropylene fibers is sandwiched between the two fibrous layers.

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Seminar: Ban-und Dammstoffe aus Hanf: Technik, Sep. 12, 1998 in Bremen, Eignung unterschiedlicher biogener Fasern fur die Warmedammung.

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