CASING MATERIAL AND A METHOD AND APPARATUS FOR ITS MANUFACTURE
摘要
The invention relates to a method and to apparatus for perforating a web of material (12) intended to form an outer casing sheet of absorbent articles. As the web (12) is advanced the web is first provided with a large number of mutually separated cuts in the nip defined between raised plateaus (24) on a matrix cylinder (14) and circumferentially extending knife-edges (26) of a cutting cylinder (16). The web (12) 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
WO9620673(A1)
申请公布日期
1996.07.11
申请号
WO1995SE01594
申请日期
1995.12.28
申请人
MOELNLYCKE AB;LINDQUIST, BENGT;ARESKOUG, STEFAN;STRAALIN, ANDERS
发明人
LINDQUIST, BENGT;ARESKOUG, STEFAN;STRAALIN, ANDERS