SOUND ABSORBING MATERIAL

To provide a sound absorbing material which is excellent in sound absorption characteristics with respect to sounds of broad frequencies, and has a high peeling strength, even when having thin thickness and low basis weight.SOLUTION: In a sound absorbing material, a non-woven fabric skin layer inclu...

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Bibliographische Detailangaben
Hauptverfasser:	OKAMURA CHIE, SHIODA EIJI, KOMATSU TAKASHI, YAMAMURO SHINYA
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 LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 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 WADDING
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Beschreibung
Zusammenfassung:	To provide a sound absorbing material which is excellent in sound absorption characteristics with respect to sounds of broad frequencies, and has a high peeling strength, even when having thin thickness and low basis weight.SOLUTION: In a sound absorbing material, a non-woven fabric skin layer including a fiber composed of thermoplastic resin, and a short-fiber non-woven fabric base material layer are integrally interlaced. The non-woven fabric skin layer has an interlaced hole of 0.19 mm2 or less of a hole size.SELECTED DRAWING: None 【課題】厚みを薄く、低目付とした場合であっても、広い周波数の音に対する吸音性に優れ、かつ、高い剥離強力を有する吸音材の提供。【解決手段】熱可塑性樹脂からなる繊維を含む不織布表皮層と、短繊維不織布基材層とが、交絡一体化されている吸音材であって、該不織布表皮層が、孔サイズ０．１９ｍｍ2以下の交絡孔を有することを特徴とする吸音材。【選択図】なし