公开(公告)号：EP2673010A2

公开(公告)日：2013-12-18

申请号：EP12744887.6

申请日：2012-01-30

申请人： Polymer Group, Inc.

发明人： STEFFEN, John, F. ,  GRONDIN, Pierre, D. ,  MOODY, Ralph, A.

IPC分类号： A61L15/22

CPC分类号： A61L15/24 ,  C08L23/12

摘要： A liquid management layer constructed from large diameter uncrimped fibers in the form of a spunbond nonwoven web is described. Embodiments of the liquid management layer can include a plurality of thermoplastic fibers in the form of a spunbond nonwoven web where the plurality of thermoplastic fibers are randomly oriented and uncrimped, where the liquid management layer has a maximum void volume of 25 cc/g and a web density of at least 0.05 g/cc, where the liquid management layer has a maximum thickness of 1.5 mm, a basis weight of at least 30 g/m2 and a rewet value of less than 0.4 g according to test method WSP 70.8, and where the liquid management layer has an average fiber diameter of at least 40 microns based on the number of thermoplastic fibers in the liquid management layer and where less than 10% by count of the plurality of thermoplastic fibers in the liquid management layer have an absolute fiber diameter less than 30 microns. Additional embodiments of the invention include a personal care absorbent article incorporating the liquid management layer over an absorbent core.

公开(公告)号：EP2909017A1

公开(公告)日：2015-08-26

申请号：EP13847097.6

申请日：2013-10-10

申请人： Polymer Group, Inc.

发明人： DIAZ DE LEON IZQUIERDO, Sergio, Rafael ,  ALABART, Marcal, Bargallo ,  STREET, John, Arthur ,  STEFFEN, John, F. ,  MOODY, Ralph, A.

IPC分类号： B29D19/08

CPC分类号： D01D4/02 ,  D01D4/025 ,  D01D5/088

摘要： A spinneret, apparatus, and method are provided for making filaments for fibrous nonwoven fabrics with more uniform filament and fabric formation while minimizing filament breaks and hard spot defects in webs and fabrics made therefrom. The spinneret has a spinneret body that has an overall length to hydraulic diameter ratio and defines orifices that extend through the spinneret body, wherein the orifices comprise capillaries that open at a face of the spinneret body for polymer filament extrusion therefrom, wherein the capillaries are arranged in a plurality of different rows at the face of the spinneret body, and wherein the plurality of different rows are arranged into a plurality of different zones at the face of the spinneret body. A spinneret body of the spinneret can have an overall length to hydraulic ratio of at least 3 percent and/or a zone-to-zone length to hydraulic ratio of at least 2% and/or the hydraulic diameters, lengths, and length to hydraulic diameter ratios can progressively increase or decrease zone-to-zone for at least three different zones of capillaries, which can be applied to cross-flow quench or quench from a single-side. The spinneret body is designed to better accommodate differing operational proximity of the various different zones to quench air sources or source at commercially useful throughputs and fiber uniformity.