DASH ISOLATION PAD HAVING MULTILAYER STRUCTURE EXCELLENT IN FORMABILITY AND SOUND ABSORPTIVITY

PROBLEM TO BE SOLVED: To provide a dash isolation pad having a multilayer structure excellent in formability and sound absorptivity.SOLUTION: A dash isolation pad comprises a decoupler and a sound-absorbing/insulation layer. The decoupler includes a cocoon cotton felt made of an urethane foam or an...

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Bibliographische Detailangaben
Hauptverfasser:	PARK BONG HYUN, JUNG PAN KI, RYU SEUNG SOO, KIM KEUN YOUNG, LEE JUNG WOOK, JEONG KIE YOUN, SEO WON JIN, JOO KIL BU, SEO DAE WON
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR BRAIDING COTTON-WOOL FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS KNITTING LACE-MAKING MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS NON-WOVEN FABRICS PERFORMING OPERATIONS PHYSICS SOUND-PRODUCING DEVICES TEXTILES TRANSPORTING TRIMMINGS VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR WADDING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a dash isolation pad having a multilayer structure excellent in formability and sound absorptivity.SOLUTION: A dash isolation pad comprises a decoupler and a sound-absorbing/insulation layer. The decoupler includes a cocoon cotton felt made of an urethane foam or an octo-lobal-shaped cross-section fiber. The sound-absorbing/insulation layer includes a high rigidity felt made of an octo-lobal-shaped cross-section fiber. The octo-lobal-shaped cross-section fiber has a profile degree (α) of 2.0 to 2.7.SELECTED DRAWING: Figure 1 【課題】成形性及び吸音性能に優れた多層構造のダッシュアイソレーションパッドを提供する。【解決手段】デカップラーと吸遮音層を含むダッシュアイソレーションパッドであって、前記デカップラーはウレタンフォーム又は８葉形断面繊維から製造された繭綿フェルトを含み、前記吸遮音層は８葉形断面繊維から製造された高剛性フェルトを含み、前記８葉形断面繊維は異形度（α）が２．０〜２．７である。【選択図】図１