Bicomponent nonwoven webs containing splittable thermoplastic filaments and a third component
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United States of America Patent
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Feb 3, 2004
Grant Date -
N/A
app pub date -
Nov 13, 1998
filing date -
Nov 13, 1998
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Expired
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Abstract
An improved nonwoven web composite is formed by combining splittable bicomponent thermoplastic filaments with a component selected from other fibers and particles. The bicomponent filaments include distinct regions of first and second incompatible polymers extending the length of the filaments. After the bicomponent filaments are combined with the other fibers and/or particles, the bicomponent filaments are caused to split lengthwise along boundaries between the regions of different polymers, resulting in a web or matrix of finer filaments which entrap, ensnare and contain the other fibers and/or particles within the web or matrix. The nonwoven web composite is particularly useful for making absorbent articles, which require durability and optimum levels of absorbent fibers and/or particles.
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