Sound and thermal insulating non-woven synthetic sheet material

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United States of America Patent

PATENT NO 6514889
SERIAL NO

09585481

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A non-woven synthetic sheet material for use in sound insulation and/or thermal insulation is described. The sheet material is a felt or mat of substantially uniform synthetic fiber thickness and defines opposed flat surfaces. The sheet material is needle-punched from at least one of the opposed flat surfaces thereof to cause the synthetic fibers to intertwine to form a pliable sound and/or thermal insulating sheet. The insulating sheet has a density in the range of from about 100 to 1500 g/m.sup.2 and a homogeneous integrity resistant to fragmentation. Preferably a polymeric film is interconnected to a surface of the synthetic fiber sheet by a further needle punch step the polymeric film is preferably a metalized polyethylene film. The material has a multitude of uses in the construction industry. The felt may also be provided in strip form for use in the framing of wooden structures to sound insulate interconnected parts.

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Patent Owner(s)

Patent OwnerAddress
ALTER INVEST II FUND L P5 PLACE VILLE-MARIE #500 MONTREAL QUEBEC H3B SE7

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ducharme, Robert Ste-Anne-des Plaines, CA 12 365
Poirier, Alain St-Luc, CA 13 346
Theoret, Richard Montreal, CA 5 56

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