发明名称 SOUND ADSORBING MATERIAL
摘要 FIELD: textile, paper. ^ SUBSTANCE: sound adsorbing material comprises layered non-woven fabric with weight per area unit equal to 150-800 g/m2 and volume density equal to 0.01-0.2 g/cm2 and surface material with air permeability not more than 50 cm3/cm2/s measured according to JIS L-1096 standard. The non-woven fabric and surface material are arranged in layers by binding, amount of binding points for the non-woven fabric and surface material amounts to 30 points/cm2 at most, and the relation of the total binding point square to the total binding point square and points without binding amounts to 30% at most. ^ EFFECT: improving material sound adsorbing properties. ^ 22 cl
申请公布号 RU2358246(C2) 申请公布日期 2009.06.10
申请号 RU20060109476 申请日期 2004.08.24
申请人 TAKAJASU KO., LTD.;DJUPON-TOREHJ KOMPANI, LTD.;ITIMURA SANGIO KO., LTD. 发明人 TAKAJASU AKIRA;JAMAMOTO TSUTOMU;KOSUGE KAZUKHIKO;MATSUMURA MINEAKI
分类号 G01K11/16 主分类号 G01K11/16
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