Disposable diaper

Details Disposable diaper Disposable diaper

2006-12-12

2006-12-12

Stephens, Jacqueline F. (Department: 3761)

Surgery

Means and methods for collecting body fluids or waste material

Absorbent pad for external or internal application and...

C604S367000, C604S368000, C604S375000, C604S378000

Reexamination Certificate

active

07147629

ABSTRACT:
A disposable diaper has an absorbent core. The core contains therein hydrophilic fibers of 30–70 wt % and super-absorbent polymer particles of 70–30 wt %. Of the super-absorbent particles, first super-absorbent polymer particles having a relatively long liquid-absorbing duration lying in a middle zone of the core as viewed in a transverse direction as well as in a thickness direction of the core to form a polymer phase and second super-absorbent polymer particles having a relatively short liquid-absorbing duration lying in the core above, below and laterally outside the polymer phase to form a mixture phase containing therein the hydrophilic fibers mixed therewith.

REFERENCES:
patent: 4610678 (1986-09-01), Weisman et al.
patent: 5439458 (1995-08-01), Noel et al.
patent: 5855571 (1999-01-01), Steger et al.
patent: 6017336 (2000-01-01), Sauer
patent: 1 110 528 (2000-12-01), None
patent: 1 312 325 (2002-11-01), None
patent: 52-20692 (1977-02-01), None
patent: WO 99/22685 (1999-05-01), None

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