| 发明名称 |
Ear plugs and method of forming same |
| 摘要 |
A process for forming a foamed thermoplastic earplug, comprising the steps of extruding a foamed body of thermoplastic material; shaping the foamed thermoplastic material; and at least partially separating the resulting shaped material for forming individual earplugs.
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| 申请公布号 |
US7096872(B2) |
申请公布日期 |
2006.08.29 |
| 申请号 |
US20020256644 |
申请日期 |
2002.09.27 |
| 申请人 |
LIGON SR JAMES T;LEWIS JEFFREY C |
发明人 |
LIGON, SR. JAMES T.;LEWIS JEFFREY C. |
| 分类号 |
A61F11/00;B29C44/30;A61F11/08;B29C44/56 |
主分类号 |
A61F11/00 |
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