| 发明名称 |
A METHOD AND APPARATUS FOR PERFORATING A WEB OF MATERIAL |
| 摘要 |
<p>The present invention relates to a method of producing a web of material (6) having a generally flat upper surface and a pattern of perforated recesses (13; 14) which project downwardly from the flat upper surface. According to the invention, a flat web (6) of plastically deformable material is provided with a pattern of mutually separated cuts with the aid of an ultrasonic welding arrangement (1), whereafter a recess (13; 14) is formed on one side of each cut in the web. The invention also relates to apparatus for carrying out the method.</p> |
| 申请公布号 |
WO9620664(A1) |
申请公布日期 |
1996.07.11 |
| 申请号 |
WO1995SE01518 |
申请日期 |
1995.12.19 |
| 申请人 |
MOELNLYCKE AB;LINDQUIST, BENGT |
发明人 |
LINDQUIST, BENGT |
| 分类号 |
A61F13/15;B26D7/08;B26F1/18;B26F1/22;B26F1/26;B29C65/08;B29C65/74;B29C69/00;B29D7/01;(IPC1-7):A61F13/15 |
主分类号 |
A61F13/15 |
| 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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