发明名称 |
Molded respirator containing sorbent particles |
摘要 |
Molded respirators containing an air-permeable, sorbent-particle-containing layer between air-permeable particle-retaining layers. The particle-containing layer is stretchable during shaping without tearing or significant loss of particles. At least some of the fibers in the particle-containing layer are sufficiently tacky after being formed by themselves into a particle-free web and cooled to room temperature so that the web will adhere to itself. The respirators can be molded from flat webs without the need to fabricate the particle-containing layer into a shaped preform.
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申请公布号 |
US6234171(B1) |
申请公布日期 |
2001.05.22 |
申请号 |
US20000568731 |
申请日期 |
2000.05.11 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
SPRINGETT JAMES E.;BARRETT LEONARD W.;HARPER ROBERTA C. |
分类号 |
A62B18/02;A41D13/11;B01D39/16;B32B5/26;D04H1/40;(IPC1-7):A62B7/10 |
主分类号 |
A62B18/02 |
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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