发明名称 |
MIKROPERFORIERTE POLYMERFOLIE ZUR SCHALLDÄMPFUNG AND SCHALLDÄMPFER DER DIESE VERWENDET |
摘要 |
Microperforated polymeric films and sound absorbers using such films are provided. The microperforated polymeric films may be relatively thin and flexible and may further include holes having a narrowest diameter less than the film thickness and a widest diameter greater than the narrowest diameter. The microperforated polymeric films of a sound absorber may also have relatively large free span portions, which, in certain embodiments, may vibrate in response to incident sound waves. |
申请公布号 |
DE69902276(D1) |
申请公布日期 |
2002.08.29 |
申请号 |
DE1999602276 |
申请日期 |
1999.01.18 |
申请人 |
MINNESOTA MINING & MANUFACTURING COMPANY, ST. PAUL |
发明人 |
WOOD, B. |
分类号 |
E04B1/82;B29C59/04;B32B27/12;B65D65/28;G10K11/16;G10K11/162;(IPC1-7):G10K11/16 |
主分类号 |
E04B1/82 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|