Wetlaid unitary stratified composite
First Claim
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1. A wetlaid absorbent composite comprising a first stratum, a second stratum, and a transition zone intermediate and coextensive with the first and second strata;
- the first stratum comprising synthetic fibers and a bicomponent binding fibers;
the second stratum comprising a bicomponent binding fibers and crosslinked cellulosic fibers; and
the transition zone comprising fibers from the first and second strata commingled substantially uniformly across the composite'"'"'s width and along the composite'"'"'s length.
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Abstract
A unitary stratified composite composed of a first stratum and a second stratum integrally connected by a transition zone is disclosed. The first stratum serves as a liquid acquisition stratum that rapidly acquires and then transfers liquid to the second stratum. The second stratum serves to withdraw liquid from the first stratum and further serves as a temporary storage stratum. Methods for forming the unitary stratified composite are also disclosed.
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Citations
21 Claims
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1. A wetlaid absorbent composite comprising a first stratum, a second stratum, and a transition zone intermediate and coextensive with the first and second strata;
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the first stratum comprising synthetic fibers and a bicomponent binding fibers;
the second stratum comprising a bicomponent binding fibers and crosslinked cellulosic fibers; and
the transition zone comprising fibers from the first and second strata commingled substantially uniformly across the composite'"'"'s width and along the composite'"'"'s length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A wetlaid absorbent composite comprising a first stratum, a second stratum, and a transition zone intermediate and coextensive with the first and second strata;
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the first stratum comprising polyethylene terephthalate fibers and bicomponent binding fibers;
the second stratum comprising crosslinked cellulosic fibers and a wet strength agent; and
the transition zone comprising fibers from the first and second strata commingled substantially uniformly across the composite'"'"'s width and along the composite'"'"'s length. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. An absorbent composite comprising a first stratum, a second stratum, and a transition zone intermediate and coextensive with the first and second strata;
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the first stratum comprising synthetic fibers and a bicomponent binding fibers;
the second stratum comprising a bicomponent binding fibers and crosslinked cellulosic fibers; and
the transition zone comprising fibers from the first and second strata commingled substantially uniformly across the composite'"'"'s width and along the composite'"'"'s length.
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21. An absorbent composite comprising a first stratum, a second stratum, and a transition zone intermediate and coextensive with the first and second strata;
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the first stratum comprising polyethylene terephthalate fibers and bicomponent binding fibers;
the second stratum comprising crosslinked cellulosic fibers and a wet strength agent; and
the transition zone comprising fibers from the first and second strata commingled substantially uniformly across the composite'"'"'s width and along the composite'"'"'s length.
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Specification