Multi-layered noise absorbing and insulating material having air-permeability
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United States of America Patent
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Jan 2, 2018
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app pub date -
Aug 25, 2015
filing date -
Sep 2, 2014
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Abstract
A multi-layered noise absorbing and insulating material includes a noise insulation material having opposing first and second major surfaces. The noise insulation material includes an adhesive resin including an air permeability-forming material. A first noise absorption material is adhered to the first major surface of the noise insulation material. A second noise absorption material is adhered to the second major surface of the noise insulation material. The multi-layered noise insulation absorbing and insulating material has air-permeability.
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