Nonwoven web including a superabsorbent region and articles including the same
OwnerFouad D. Mehawejinventor
Life of this patent
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Abstract
An absorbent article that includes a nonwoven web that includes synthetic polymer fibers, a first surface, a second surface opposite the first surface, a first region including superabsorbent polymer, the first region extending into the nonwoven web from the first surface toward the second surface, and a second region essentially free of superabsorbent polymer, the second region extending into said nonwoven web from the second surface toward the first surface.
Claims26
An absorbent article comprising:
- a nonwoven web comprising
- synthetic polymer fibers;
- a first surface;
- a second surface opposite said first surface;
- a first region comprising superabsorbent polymer, said first region extending into said nonwoven web from said first surface toward said second surface, said superabsorbent polymer having been formed in situ in said first region;
- and
- a second region essentially free of superabsorbent polymer, said second region extending into said nonwoven web from said second surface toward said first surface.
An absorbent article comprising:
- an absorbent core comprising a nonwoven web comprising
- synthetic polymer fibers;
- a first surface;
- a second surface opposite said first surface;
- a first region comprising superabsorbent polymer, said first region extending into said nonwoven web from said first surface toward said second surface, said superabsorbent polymer having been formed in situ in said first region;
- and
- a second region essentially free of superabsorbent polymer, said second region extending into said nonwoven web from said second surface toward said first surface.
An absorbent core dimensioned for use in an absorbent article, said core comprising a nonwoven web comprising
- synthetic polymer fibers,
- a liquid storage region comprising a superabsorbent polymer, said liquid storage region extending into said nonwoven web from a first surface of said nonwoven web toward a second surface of said nonwoven web, said superabsorbent polymer having been formed in situ in said liquid storage region;
- and
- liquid acquisition region free of superabsorbent polymer, said liquid acquisition region extending into said nonwoven web from a first surface of said nonwoven web toward said liquid storage region.
An article comprising a nonwoven web comprising
- a first surface,
- a second surface opposite said first surface,
- a fluid storage region comprising superabsorbent polymer, said fluid storage region extending into said nonwoven web from said second surface of said web toward said first surface of said web, said superabsorbent polymer having been formed in situ in said first region;
- and
- a fluid acquisition region essentially free of superabsorbent polymer, said fluid acquisition region extending into said nonwoven web from said first surface toward said second surface.
A method of making an absorbent article, said method comprising:
- impregnating a first region of a nonwoven web with an aqueous composition comprising a superabsorbent polymer precursor and a crosslinking agent, said first region extending from a first surface of said web into the depth of the web such that the second surface of said web opposite said first surface of said web is free of superabsorbent polymer precursor;
- and
- drying said composition.
A method of making an absorbent article, said method comprising:
- impregnating a high loft nonwoven web with an aqueous composition comprising a superabsorbent polymer precursor and a crosslinking agent;
- and
- drying said composition, said drying comprising exposing said composition to microwave radiation,
- the dried absorbent article comprising from 10% by weight to about 90% by weight superabsorbent polymer.
Dependencies are inferred from the claim text.