SOUNDPROOF MATERIAL, SOUNDPROOF STRUCTURE, AND CONSTRUCTION METHOD OF THE SAME

PROBLEM TO BE SOLVED: To provide a soundproof material which can absorb or insulate an airborne sound effectively in spite of being a lightweight and a simple structure.SOLUTION: A soundproof material 6 which may contact an inner wall of a hollow double wall structure having an air layer inside and...

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Bibliographische Detailangaben
Hauptverfasser:	ADACHI ATSUMI, TAKAMATSU MASAHIKO, KOIZUMI SATOSHI, KINDEI HIDENORI, MIYAIE NOBORU, KIYOOKA SUMITO
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR BUILDING CEILINGS FIXED CONSTRUCTIONS FLOORS GENERAL BUILDING CONSTRUCTIONS INSULATION OR OTHER PROTECTION OF BUILDINGS METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS ROOFS SOUND-PRODUCING DEVICES WALLS, e.g. PARTITIONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a soundproof material which can absorb or insulate an airborne sound effectively in spite of being a lightweight and a simple structure.SOLUTION: A soundproof material 6 which may contact an inner wall of a hollow double wall structure having an air layer inside and is for insulating an airborne sound includes: a buffer layer 6a formed of a shock absorbing material with an apparent density of 0.03 to 0.7 g/cm; and a mass layer 6b having a larger density than that of the buffer layer 6a. The mass layer 6b is formed of a first mass layer 6b1 and a second mass layer 6b2 having a smaller density than that of the first mass layer.