Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...
Reexamination Certificate
1998-09-25
2001-01-16
Weiss, John G. (Department: 3761)
Surgery
Means and methods for collecting body fluids or waste material
Absorbent pad for external or internal application and...
C604S385010, C604S385040
Reexamination Certificate
active
06174302
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to disposable diapers for absorption and containment of urine and other body exudates.
Japanese Patent Application Disclosure (Kokai) No. Hei7-289584 discloses a disposable diaper including leak preventing cuffs normally biased to rise up on an inner surface of the diaper. These cuffs are composed of substantially crescent-shaped elastic sheets which extend longitudinally of the diaper and are bonded under tension along their arc-shaped edges to the inner surface of the diaper. Such an arrangement makes it possible to form the cuffs having their heights gradually decreasing from the maximal dimension in the crotch region to the minimal dimension in the proximity of the waist-opening. The diaper provided with such cuffs is not bulky in the proximity of the waist-opening and therefore convenient for wearing it.
With this known diaper, a main body of the diaper must be previously curved in order to bond the crescent-shaped cuffs to the main body. A step of bonding the cuffs to the main body previously curved in the corresponding shape inevitably obstructs a desired speed-up of production. In addition, use of an elastic sheet as material for these cuffs necessarily increases the material cost.
SUMMARY OF THE INVENTION
An object of the invention is to solve the problems encountered by the conventional diaper provided with the foregoing leakage proofing cuffs.
According to the invention, there is provided a disposable diaper comprising a main body serving for absorption of body fluids, the main body comprising, in turn, a liquid-permeable topsheet, a liquid-impermeable backsheet and a liquid-absorbent core disposed therebetween, and a pair of elastically stretchable/contractile leakage proofing cuffs formed along transversely opposite side edges of the main body, the leak preventing cuffs extending longitudinally of the diaper and being collapsed inwardly of the main body onto an inner surface thereof under an elastic bias to rise up the leakage proofing cuffs on the inner surface, wherein the core is defined by front and rear ends and opposite side edges, the side edges being curved inwardly of the core at least along longitudinally middle parts of the side edges, and each of the leakage proofing cuffs at least partially is formed by portions of the topsheet and the backsheet extending outward beyond transversely opposite side edges of the core and includes a lower portion extending in a region defined between the curved side edge of the core and a straight folding line extending longitudinally outside the curved side edge and an upper portion formed by folding an extension of the lower directed transversely of the main body along the straight folding line onto the inner surface of the main body, wherein elastically stretchable/contractile members are secured under appropriate tension to the leak preventing cuffs at least in the proximity of the folding line and in the proximity of an inner side edge of the upper portion extending in parallel to the folding line.
REFERENCES:
patent: H1630 (1997-01-01), Roe et al.
patent: 4695278 (1987-09-01), Lawson
patent: 5074856 (1991-12-01), Coe et al.
patent: 5304159 (1994-04-01), Tanji et al.
patent: 5304160 (1994-04-01), Igaue et al.
patent: 5342342 (1994-08-01), Kitaoka
patent: 5391162 (1995-02-01), Widlund et al.
patent: 5476458 (1995-12-01), Glaug et al.
patent: 5490847 (1996-02-01), Correa et al.
patent: 5577540 (1996-11-01), Sageser
patent: 5582606 (1996-12-01), Bruemmer et al.
patent: 5613959 (1997-03-01), Roessler et al.
patent: 5643243 (1997-07-01), Klemp
patent: 5643244 (1997-07-01), Yamaki et al.
patent: 5647863 (1997-07-01), Hammons et al.
patent: 5649917 (1997-07-01), Roberts et al.
patent: 5649918 (1997-07-01), Schleinz
patent: 5649919 (1997-07-01), Roessler et al.
patent: 5669896 (1997-09-01), Kielpikowski
patent: 5674213 (1997-10-01), Sauer
patent: 5707364 (1998-01-01), Coates
patent: 5718698 (1998-02-01), Dobrin et al.
patent: 5730738 (1998-03-01), McFall et al.
patent: 5746732 (1998-05-01), Olsson et al.
patent: 5752947 (1998-05-01), Awolin
patent: 5766213 (1998-06-01), Hackman et al.
patent: 5810800 (1998-09-01), Hunter et al.
patent: 5820618 (1998-10-01), Roberts et al.
patent: 5824172 (1998-10-01), Kielpikowski
patent: 5827259 (1998-10-01), Laux et al.
patent: 5851204 (1998-12-01), Mizutani
patent: 5911713 (1999-06-01), Yamada et al.
patent: WO 95/14453 (1995-06-01), None
Baker & Daniels
Shanoski Paul
Uni-Charm Corporation
Weiss John G.
LandOfFree
Disposable diaper does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Disposable diaper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disposable diaper will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2493727