SOUND INSULATING FIBER AND SOUNDPROOF MATERIAL
PROBLEM TO BE SOLVED: To provide a soundproof material which is high in sound insulating performance and light in weight, and to provide a sound insulating fiber useful for the soundproof material. SOLUTION: The sound insulating fiber is constituted of thermoplastic resin and single-fiber fineness i...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a soundproof material which is high in sound insulating performance and light in weight, and to provide a sound insulating fiber useful for the soundproof material. SOLUTION: The sound insulating fiber is constituted of thermoplastic resin and single-fiber fineness is adjusted to 5 dtexes or smaller and cross-sectional flattening is adjusted to 7 to 40. The thermoplastic resin may be polyvinyl alcohol resin, and for example, the fiber may be vinylon fiber or polyclar fiber. The fiber may contain stratified inorganic compound of a mass proportion of about 0.01 to 30% in the fiber and the face direction of the stratified inorganic compound may be oriented to the direction of the flat face of the fiber. The soundproof material may be prepared of nonwoven fabric which contain mass proportion of 50% or higher of the fiber. In the soundproof material, average apparent density may be 0.01 to 0.5 g/cm3, and the mesh density may be about 30 to 500 g/m2and permeability may be about 1 to 150 ml/cm2/second. COPYRIGHT: (C)2007,JPO&INPIT |
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