发明名称 |
Process for producing sound absorber and produced by the process, sound absorber and sound absorbing structure |
摘要 |
A process for producing a sound absorber having skin layers constituting front and back surfaces and, interposed between the skin layers, a void layer having a plurality of pin formed holes, each hole having a depth which is enough to penetrate one of the skin layers and is not enough to reach the other skin layer. The sound absorber is formed of a resin material containing 2 to 60 wt % of reinforcing fibers with a length of 2 to 100 mm.
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申请公布号 |
US7938228(B2) |
申请公布日期 |
2011.05.10 |
申请号 |
US20060817980 |
申请日期 |
2006.03.07 |
申请人 |
PRIME POLYMER CO., LTD.;DAIKYONISHIKAWA CORPORATION |
发明人 |
SAITO YOSHIAKI;SUGAWARA MINORU;GODA HIROFUMI;SUGA TAKEHARU;OKAMURA MASAHARU;SAKAI TOSHIFUMI |
分类号 |
E04B1/82;B28B1/00;B28B1/48;B32B37/00;E04B1/74;E04B1/84 |
主分类号 |
E04B1/82 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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