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    Extensible absorbent core and absorbent article
    8.
    发明申请
    Extensible absorbent core and absorbent article 审中-公开
    可拉伸吸收芯和吸收制品

    公开(公告)号：US20060047257A1

    公开(公告)日：2006-03-02

    申请号：US10930226

    申请日：2004-08-31

    申请人： Maria Raidel ,  Franz Aschenbrenner ,  Jan Ullmann

    发明人： Maria Raidel ,  Franz Aschenbrenner ,  Jan Ullmann

    IPC分类号： A61F13/15

    CPC分类号： A61F13/532 ,  A61F13/535 ,  A61F2013/53791

    摘要： The present invention provides an absorbent article, such as a sanitary napkin or catamenial napkin, wherein the absorbent article has a longitudinal direction and a lateral direction, the absorbent article has: a) a liquid-permeable top layer, wherein the top layer has an extensibility in lateral direction of at least 30% to 70% at 4N/50 mm, b) a liquid-impermeable backing layer laminated to the top layer, wherein the backing layer has a higher extensibility in lateral direction than in longitudinal direction and the extensibility in lateral direction is at least between 5% and 40% at 4N/50 mm, and c) an absorbent core positioned between the top layer and the backing layer, wherein the absorbent core has a plurality of non-linear slits and/or linear slits at an acute angle relative to the longitudinal direction through the absorbent core. The absorbent core may be a variety of materials, however one particular example is an absorbent core with a layer of material having a basis weight of between 20 g/m2 to 1000 g/m2 and is an airlaid fiber layers, coform fiber layers, meltblown fiber layers or laminates thereof and laminates of airlaid fiber layers, coform fiber layers or meltblown fiber layers or laminates thereof with a nonwoven support. The absorbent core generally will have a ratio of tensile strength in longitudinal direction and resistance to tear in lateral direction has a value in the range from 3.5:1 to 6:1. The invention further provides a punching die for forming slits in an nonwoven absorbent core material and a process for forming an absorbent article using said punching die.

    摘要翻译： 本发明提供一种吸收性物品，例如卫生巾或月经巾，其中吸收性物品具有纵向和横向，吸收性物品具有：a）透液性顶层，其中顶层具有 侧向延伸率在4N / 50mm处至少为30％至70％，b）层压在顶层上的不透液性背层，其中背衬层在横向方向上具有比在纵向方向上更高的延展性和延展性 在4N / 50mm处，在侧向方向上至少为5％至40％之间，c）位于顶层和背衬层之间的吸收芯，其中吸收芯具有多个非线性狭缝和/或线性 通过吸收芯相对于纵向方向呈锐角的狭缝。 吸收芯可以是各种材料，但是一个具体实例是吸收芯，其具有基重为20g / m 2至1000g / m 2的材料层 并且是气流成网的纤维层，共模成形纤维层，熔喷纤维层或其层合物以及气流成网纤维层，共模纤维层或熔喷纤维层或其与非织造支撑体的层压体的层压体。 吸收芯通常具有纵向方向上的拉伸强度比和横向撕裂阻力的比值在3.5:1至6:1的范围内。 本发明还提供了一种用于在非织造吸收芯材中形成狭缝的冲压模以及使用所述冲模形成吸收制品的方法。