发明名称 |
METHODS AND APPARATUS FOR PRODUCING NONWOVEN FIBROUS WEBS |
摘要 |
Methods and apparatus including a chamber having a substantially open lower end positioned above a collector surface, at least one fiber inlet positioned above the lower end, a first multiplicity of rollers positioned within the chamber wherein each roller has a multiplicity of projections extending outwardly from a circumferential surface surrounding a center axis of rotation, a second multiplicity of rollers positioned within the chamber above the first multiplicity of rollers wherein each of the second multiplicity of rollers has a multiplicity of projections extending outwardly from a circumferential surface surrounding a center axis of rotation, the second multiplicity of rollers positioned so at least a portion of the projections extending outwardly from the circumferential surfaces of each of the second multiplicity of rollers vertically overlaps with at least a portion of the projections extending outwardly from the circumferential surface of at least one of the first multiplicity of rollers. |
申请公布号 |
EP2798107(A4) |
申请公布日期 |
2015.11.25 |
申请号 |
EP20120862417 |
申请日期 |
2012.12.20 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
WU, TIEN T.;HENDERSON, JOHN W.;CASTRO, GUSTAVO H.;HOFFDAHL, GERRY A.;VALL, DAVID L. |
分类号 |
D04H1/732;D04H1/541;D04H1/736 |
主分类号 |
D04H1/732 |
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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