Sound absorbing material

The present invention can obtain a sound absorbing material (1) comprising: a fiber block (2) in which one or a plurality of fibers (6) are intertwined to form a block, the block having first voids (8) and first resin particles (3) trapped in the first voids (8); and second resin particles (4) dispo...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MITAMURA MASAYA, MASAKI MOTOKI, MATSUMOTO MICHIHITO
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The present invention can obtain a sound absorbing material (1) comprising: a fiber block (2) in which one or a plurality of fibers (6) are intertwined to form a block, the block having first voids (8) and first resin particles (3) trapped in the first voids (8); and second resin particles (4) disposed in second voids (9) formed between the plurality of fiber blocks (2) and having a particle diameter larger than the particle diameter of the first resin particles (3). The first resin particles (3) captured in the first voids (8) improve sound absorption performance in a high-frequency range. Sound absorption performance in a low-frequency range is improved by the second resin particles (4) disposed in the second voids (9). The sound-absorbing material has excellent sound-absorbing performance in a low-frequency range and a high-frequency range. 本发明能够得到一种吸音材料(1),其构成如下:纤维块(2),其中,一根或多根纤维(6)相互缠绕而成块,在块的内部具有第一空隙(8)和在第一空隙(8)中捕捉的第一树脂粒子(3);和第二树脂粒子(4),其配置于在多个纤维块(2)之间形成的第二空隙(9)中、具有比第一树脂粒子(3)的粒径大的粒径。利用在第一空隙(8)中捕捉的第一树脂粒子(3