High loft nonwoven fabrics and method for producing same
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United States of America Patent
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Dec 14, 1993
Grant Date -
N/A
app pub date -
Apr 16, 1992
filing date -
Apr 16, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A nonwoven filamentary web having high loft is produced by extruding a molten thermoplastic polymer or polymer blend through a spinneret to form continuous filaments while maintaining extrusion conditions which induce melt-fracture of the extrudate; attenuating the thus extruded melt-fractured filaments to obtain filamentary material having a crimped structure; and depositing the melt-fractured filamentary material on a collection surface and forming a web therefrom.
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