Micro and nanofiber nonwoven spunbonded fabric
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United States of America Patent
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Jan 8, 2013
Grant Date -
Dec 29, 2011
app pub date -
Mar 28, 2007
filing date -
Mar 28, 2006
priority date (Note) -
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Abstract
The invention provides methods for the preparation of nonwoven spunbonded fabrics and various materials prepared using such spunbonded fabrics. The method generally comprises extruding multicomponent fibers having an islands in the sea configuration such that upon removal of the sea component, the island components remain as micro- and nanofibers. The method further comprises mechanically entangling the multicomponent fibers to provide a nonwoven spunbonded fabric exhibiting superior strength and durability without the need for thermal bonding.
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