CPC G10K 11/168 (2013.01) [B32B 5/022 (2013.01); B32B 2307/102 (2013.01); B32B 2307/732 (2013.01)] | 13 Claims |
1. A soundproof material comprising:
a surface cover layer composed of a fiber material;
a back-surface layer laminated onto the surface cover layer, and composed of a porous material with voids interconnected with each other; and
a joining layer laminated between the surface cover layer and the back-surface layer, and composed of a joining material,
wherein:
the fiber material has an average fiber diameter of 1 to 10 μm and an air-permeation volume of 5 to 200 cm3/cm2·sec,
the joining layer has a joint area percentage of 50 to 95% with respect to an entire surface where the surface cover layer and the back-surface layer face each other, and
the surface cover layer has a basis weight from 5 to 300 g/m2.
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