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US 2003/0167045 A1Published application
Absorbent article containing unitary stratified composite
AssigneeWeyerhaeuser Company
InventorsPeter A. Graef, Colin Elston, Daniel T. Bunker, Fred B. Howard, Jeffrey D. Mathews, Shahrokh A. Naieni, Charles E. Miller
Life of this patent
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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.
Claims67
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.
2 more elements
An absorbent article, comprising:
- (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.
5 more elements
An absorbent article, comprising:
- (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.
6 more elements
An absorbent article, comprising:
- (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.
7 more elements
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 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.
2 more elements
An absorbent article, comprising:
- (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.
5 more elements
An absorbent article, comprising:
- (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.
6 more elements
An absorbent article, comprising:
- (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.
7 more elements
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 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.
2 more elements
An absorbent article, comprising:
- (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.
5 more elements
An absorbent article, comprising:
- (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.
6 more elements
An absorbent article, comprising:
- (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.
7 more elements
Dependencies are inferred from the claim text.