Liquid Barrier Nonwoven Fabrics with Ribbon-Shaped Fibers

A nonwoven personal hygiene component comprising of a first ribbon-shaped spunbond layer; a second ribbon-shaped spunbond layer; and a melt-blown layer disposed between said first ribbon-shaped spunbond layer and said second ribbon-shaped spunbond layer, wherein said melt-blown layer is in direct co...

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Bibliographische Detailangaben
Hauptverfasser: GRONDIN, PIERRE D, DWIGGINS, CARLTON F, STEFFEN, JOHN F, MOODY III, RALPH A
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:A nonwoven personal hygiene component comprising of a first ribbon-shaped spunbond layer; a second ribbon-shaped spunbond layer; and a melt-blown layer disposed between said first ribbon-shaped spunbond layer and said second ribbon-shaped spunbond layer, wherein said melt-blown layer is in direct contact with said first spunbond layer and said second spunbond layer, wherein at least one of the first ribbon-shaped spunbond layer, the second ribbon-shaped spunbond layer and the melt-blown layer comprise polypropylene, wherein said melt-blown layer has a basis weight of at least 0.3 gsm and not greater than 5 gsm, as measured according to ASTM D-756, wherein said nonwoven fabric contains less than 10 % by weight non-ribbon shaped spunbond fibers, and wherein said nonwoven fabric has a basis weight of at least 8 gsm and not greater than 40 gsm, a pore size of less than or equal to 27 microns when measured at 10% of cumulative filter flow, as measured using a capillary flow porometer, a low surface tension liquid strike through flow of less than 0.9 ml per second, as measured according to a modified EDANA test method WSP 70.3 (05), an air permeability of at least 10 m 3 /m 2 /min, as measured according to ASTM D-737, and a ratio of low surface tension liquid strike through flow to air permeability of greater than or equal to 0.016.