Stretchable composite sheets and processes for making
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United States of America Patent
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Feb 28, 2006
Grant Date -
Jun 17, 2004
app pub date -
Dec 12, 2002
filing date -
Dec 12, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
This invention relates to an improved method for preparing stretchable multiple-component bonded composite sheets which involves bonding a fibrous layer of spirally-crimpable multiple-component continuous filaments or staple fibers to one or more non-spirally-crimpable layers using an array of intermittent mechanical, chemical, or thermal bonds, and heating the bonded composite to activate the spiral crimp of the fibers in the spirally-crimpable layer. Multi-layer nonwoven fabrics prepared according to the method of the current invention have an improved combination of strength, aesthetics, stretch-recovery properties, and textile hand and drape compared to multiple-component nonwoven fabrics known in the art.
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