Absorbent article containing unitary stratified composite
First Claim
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1. An absorbent article, comprising:
- an 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 hydrophobic fibers and a binder;
the second stratum comprising a binder and fibers selected from the group consisting of hydrophilic fibers, hydrophobic fibers, and mixtures thereof; 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
An 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
67 Claims
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1. An absorbent article, comprising:
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an 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 hydrophobic fibers and a binder;
the second stratum comprising a binder and fibers selected from the group consisting of hydrophilic fibers, hydrophobic fibers, and mixtures thereof; 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)
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6. An absorbent article, comprising:
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(a) a liquid pervious topsheet;
(b) an 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 hydrophobic fibers and a binder;
the second stratum comprising a binder and fibers selected from the group consisting of hydrophilic fibers, hydrophobic fibers, and mixtures thereof; 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; and
(c) a liquid impervious backsheet. - View Dependent Claims (7, 8, 9, 10)
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11. An absorbent article, comprising:
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(a) a liquid pervious topsheet;
(b) an 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 hydrophobic fibers and a binder;
the second stratum comprising a binder and fibers selected from the group consisting of hydrophilic fibers, hydrophobic fibers, and mixtures thereof; 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;
(c) a storage stratum comprising an absorbent fibrous material; and
(d) a liquid impervious backsheet. - View Dependent Claims (12, 13, 14, 15)
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16. An absorbent article, comprising:
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(a) a liquid pervious topsheet;
(b) an 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 hydrophobic fibers and a binder;
the second stratum comprising a binder and fibers selected from the group consisting of hydrophilic fibers, hydrophobic fibers, and mixtures thereof; 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;
(c) a storage stratum comprising an absorbent fibrous material;
(d) an intermediate stratum interposed between the absorbent composite and the storage stratum; and
(e) a liquid impervious backsheet. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An absorbent article, comprising:
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an 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 first fibers and a binder;
the second stratum comprising second fibers and a binder; 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 (27, 28, 29, 30)
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31. An absorbent article, comprising:
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(a) a liquid pervious topsheet;
(b) an 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 first fibers and a binder;
the second stratum comprising second fibers and a binder; 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; and
(c) a liquid impervious backsheet. - View Dependent Claims (32, 33, 34, 35)
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36. An absorbent article, comprising:
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(a) a liquid pervious topsheet;
(b) an 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 first fibers and a binder;
the second stratum comprising second fibers and a binder; 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;
(c) a storage stratum comprising an absorbent fibrous material; and
(d) a liquid impervious backsheet. - View Dependent Claims (37, 38, 39, 40)
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41. An absorbent article, comprising:
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(a) a liquid pervious topsheet;
(b) an 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 first fibers and a binder;
the second stratum comprising second fibers and a binder; 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;
(c) a storage stratum comprising an absorbent fibrous material;
(d) an intermediate stratum interposed between the absorbent composite and the storage stratum; and
(e) a liquid impervious backsheet. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. An absorbent article, comprising:
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an 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 binder;
the second stratum comprising crosslinked cellulosic fibers and a binder; 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 (52, 53)
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54. An absorbent article, comprising:
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(a) a liquid pervious topsheet;
(b) an 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 binder;
the second stratum comprising crosslinked cellulosic fibers and a binder; 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; and
(c) a liquid impervious backsheet. - View Dependent Claims (55, 56)
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57. An absorbent article, comprising:
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(a) a liquid pervious topsheet;
(b) an 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 binder;
the second stratum comprising crosslinked cellulosic fibers and a binder; 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;
(c) a storage stratum comprising an absorbent fibrous material; and
(d) a liquid impervious backsheet. - View Dependent Claims (58, 59)
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60. An absorbent article, comprising:
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(a) a liquid pervious topsheet;
(b) an 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 binder;
the second stratum comprising crosslinked cellulosic fibers and a binder; 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;
(c) a storage stratum comprising an absorbent fibrous material;
(d) an intermediate stratum interposed between the absorbent composite and the storage stratum; and
(e) a liquid impervious backsheet. - View Dependent Claims (61, 62, 63, 64, 65, 66, 67)
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Specification