Absorbent article containing a wetlaid unitary stratified composite
Patent #: 6,521,812
Inventor(s): Peter A. Graef, Puyallup, Wash. (US); Colin Elston, Gig Harbor, Wash. (US); Daniel T. Bunker, Karhula (Finland); Fred B. Howard, Olalla, Wash. (US); Jeffrey D. Mathews, Puyallup, Wash. (US); Shahrokh A. Naieni, Seattle, Wash. (US); and Charles E. Miller, Kent, Wash. (US)
Company: Weyerhaeuser Company
An absorbent article, comprising a liquid-pervious topsheet, a wetlaid absorbent composite, with a first and second stratum and a transition zone intermediate and coextensive with the first and second stratum has been patented. The first stratum comprises 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 stratum and the second stratum 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.
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