SOUNDPROOF PANEL AND MANUFACTURE THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a soundproof panel which meets high demands on soundproofing and mechanical strength without sacrificing mass and necessary spatial dimensions and can be mass-produced. SOLUTION: A soundproof panel which comprises cores of honeycombs 5 sandwiched between a solid skin 12 and a porous skin 13 and wherein cells 6 of the honeycombs 5 are divided into at least two resonant cavities 11 by at least one partition 8 cut across to the opposite sides by a path 14. The partition 8 is constituted of hollow spherical microballs 15 having porous walls and being in contact with one another and also in contact with partition walls 7 of the honeycombs 5 at the contact points.