Multilayer dash isolation pad having superior formability and sound absorption performance

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Multilayer dash isolation pad having superior formability and sound absorption performance

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LEE JUNG WOOK / JOO KIL BU / SEO WON JIN / SEO DAE WON / PARK BONG HYUN / JUNG PAN KI / JEONG KIE YOUN / RYU SEUNG SOO / KIM KEUN YOUNG

Abstract

The present invention provides a multilayer dash isolation pad having superior formability and sound absorption performance. The multilayer dash isolation pad includes a decoupler and a sound absorption and insulation layer. The decoupler is a soft felt manufactured from urethane foam or octalobal cross-section fiber, and the sound absorption and insulation layer includes a compressed felt manufactured from octalobal cross-section fibers. In particular, the shape factor (α) of the octalobal cross-section fiber is 2.0 to 2.7. Particularly, the multilayer dash isolation pad according to the present invention does not decrease thickness or be contracted upon press molding after pre-heating felt, such that superior formability in components can be obtained and a sound absorption coefficient may be enhanced without increase in the weights and thicknesses of the decoupler and the sound absorption and insulation layer.

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Title :

Multilayer dash isolation pad having superior formability and sound absorption performance

Contributors:

LEE JUNG WOOK (author) / JOO KIL BU (author) / SEO WON JIN (author) / SEO DAE WON (author) / PARK BONG HYUN (author) / JUNG PAN KI (author) / JEONG KIE YOUN (author) / RYU SEUNG SOO (author) / KIM KEUN YOUNG (author)

Publication date :

2017-07-25

Type of media :

Patent

Type of material :

Electronic Resource

Language :

English

Classification :

IPC:

B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES