发明名称 |
Ytmaterial samt förfarande och apparat för dess framställning |
摘要 |
The invention relates to a method and to an apparatus for perforating a web of material intended to form an outer casing sheet of absorbent articles. As the web is advanced, the web is first provided with a large number of mutually separated cuts in the nip defined between raised plateaus on a matrix cylinder and circumferentially extending knife-edges of a cutting cylinder. The web is then deformed transversely to its plane at parts which border on each cut. The invention also relates to a perforated outer casing sheet which includes recesses in the form of mutually adjacent elongated channel-like grooves. |
申请公布号 |
SE508449(C2) |
申请公布日期 |
1998.10.05 |
申请号 |
SE19940004579 |
申请日期 |
1994.12.30 |
申请人 |
SCA HYGIENE PRODUCTS AB |
发明人 |
BENGT *LINDQUIST;STEFAN *ARESKOUG;ANDERS *STRAALIN |
分类号 |
A61F13/511;A61F13/15;A61F13/472;A61F13/49;A61F13/514;B26F1/18;B26F1/20;B29C59/04;B29D7/01;(IPC1-7):A61F13/15 |
主分类号 |
A61F13/511 |
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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