Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...
Patent
1997-08-05
1999-05-18
Weiss, John G.
Surgery
Means and methods for collecting body fluids or waste material
Absorbent pad for external or internal application and...
6043851, A61F13/15
Patent
active
059046740
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
Background of the Invention
In general terms, the invention relates to a disposable absorbent sanitary article, such as an open disposable absorbent diaper intended for young children or incontinent adults, or a disposable absorbent diaper intended for the toilet-training of children, of the type comprising an absorbent pad placed between a liquid-tight outer backing sheet and a liquid-pervious inner surface or covering sheet.
The invention relates more particularly to a disposable absorbent sanitary article of this type whose inner surface sheet includes an elongate longitudinal opening, for receiving the urine and stools, and at least two elasticated longitudinal folds extending over the whole length of said sanitary article on either side of the longitudinal opening so as to form a leaktight, exudate-containing pouch.
Sanitary articles of this type are known, for example, from U.S. Pat. No. 4,662,877 (Johnson & Johnson). According to that document, the inner surface sheet of the sanitary article is hydrophobic and is provided with an elongate opening which is offset toward the front of the article. The longitudinal edges of the opening are provided with resilient elements which are fixed in the stretched state.
French patent application FR-A-9210601 (Peaudouce) also describes a diaper whose inner surface sheet includes an elongate central opening and two elasticated longitudinal double folds extending over the whole length of the diaper and located on either side of the central opening. The two pleats of each double fold are secured to each other over the whole length of the double folds.
French patent application FR-93 14 296 (Peaudouce), which has not been published, also describes a diaper of the same type, with the double folds being capable of being folded outwards in a longitudinal region extending from the front transverse edge of the opening as far as the front transverse edge of the diaper, so as to form small longitudinal seals to prevent urine leaking out.
European patent application EP-A-357 298 (The Procter and Gamble Company) describes a diaper whose urine-pervious surface sheet includes a passage which permits the communication of fecal matter with the absorbent pad so as to isolate said matter from the user's skin. This passage is an oblong opening which is slightly offset toward the rear of the article. Resilient elements are fixed to the surface sheet close to the opening to cause the surface sheet to contract.
European patent applications EP-A-508 477, EP-A-563 971, EP-A-565 058 and EP-A-567 105 (Uni-Charm Corporation) also describe diapers whose inner surface sheet includes an elongate central opening, this central opening being capable of having one or two pairs of lateral longitudinal flaps whose free edges may be elasticated.
Although these structures described in the prior art are relatively effective, it would still be desirable to improve the take-up and isolation of bodily exudates, such as stools and urine, and also to improve the leak-tightness to prevent risks of transverse leaks of urine. The object of the invention is therefore to provide a disposable absorbent sanitary article which not only provides better take-up and storage of exudates but also improved leaktightness to prevent transverse leaks of urine.
SUMMARY OF THE INVENTION
According to the invention, a disposable absorbent sanitary article, such as a diaper, is produced, said article comprising a liquid-tight outer backing sheet of generally rectangular shape, an absorbent pad of generally rectangular shape fixed on said outer backing sheet, and of a liquid-pervious inner surface sheet covering the absorbent pad. This inner surface sheet is fixed over its periphery to the outer backing sheet. The sanitary article also comprises fastening means to enable it to be closed around a user's waist.
The article also comprises longitudinal resilient elements fixed in the stretched state to the backing sheet outside the longitudinal edges of the absorbent pad, at least in a crotch region.
The liquid
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patent: 5342342 (1994-08-01), Kitaoka
patent: 5429632 (1995-07-01), Tanji et al.
patent: 5575785 (1996-11-01), Gryskiewicz et al.
Reichle K. M.
SCA Molnlycke
Weiss John G.
LandOfFree
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