发明名称 |
Zoned stretching of a web |
摘要 |
Apparatus and methods for stretching one or more zones of a web are disclosed. Webs including stretched or activated zones are also disclosed. Each of the zones in the web is stretched in the cross-web direction, i.e., the direction transverse to the down-web direction. The stretching it can be performed continuously as the web is advancing through the apparatus in the down-web direction. The stretching can occur in the absence of physical contact with the stretched zone of the web. Strain induced on the stretched zones can be introduced gradually over a stretch distance. The strain may increase at a linear rate. The stretching methods and apparatus may be used to activate an elastic zone or zones within a web.
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申请公布号 |
US2005147802(A1) |
申请公布日期 |
2005.07.07 |
申请号 |
US20050064465 |
申请日期 |
2005.02.23 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
GORMAN MICHAEL R.;HEHENBERGER RODNEY K. |
分类号 |
B29C55/08;(IPC1-7):B29C55/06;B32B7/02 |
主分类号 |
B29C55/08 |
代理机构 |
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