Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...
Patent
1996-06-20
1998-04-07
Weiss, John G.
Surgery
Means and methods for collecting body fluids or waste material
Absorbent pad for external or internal application and...
604391, A61F 1315
Patent
active
057358389
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a disposable diaper, and, more particularly, to a disposable diaper having elasticized leg cuffs.
BACKGROUND OF THE INVENTION
Disposable diapers with elasticized leg cuffs are known in the art. Whilst it is advantageous that the elastic material provides a retractive force in the leg cuffs, for reasons of comfort, it is desirable that no retractive forces be applied to the waist portions of the diaper.
From U.S. Pat. No. 4,486,192, it is known to treat the free ends of elastic material in the waist portions of a diaper to destroy their elastic properties. This may be achieved by subjecting the ends of the elastic material to heat to thereby "kill" the elastic properties of the material. A disposable diaper is disclosed in U.S. Pat. No. 4,437,860 in which uniformally stretched elastic bands are adhesively bonded along the entire length of both longitudinal edges of the diaper. Heavier concentrations of adhesive are provided in the waist portions than in the crotch portion to reduce gathering and creep of the elastic in the waist portions.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an absorbent article such as a disposable diaper which lends itself to mass production techniques and in which the elastic material which provides a retractive force in the leg cuffs is so arranged that means for fastening the diaper around a wearer can be simply and effectively affixed to the diaper.
This object is achieved in accordance with the present invention by a disposable diaper having an absorbent core disposed between a facing sheet and backing sheet. The diaper has a generally hour glass shape with a narrow centrally disposed crotch portion and wider waist portions at transverse end regions of the crotch portion. The waist portions are provided with means for fastening the diaper around a wearer. The diaper also includes prestretched elastic means disposed along longitudinal edge portions of the diaper for providing predetermined gathered and substantially non-gathered regions along the edge portions, with substantially non-gathered regions being provided at said waste portions. The elastic means are enclosed with a pocket along each of the longitudinal edge portions, and the pocket is formed by one of the sheets with the elastic means being adhered to the pocket at the gathered regions and non-adhered at the non-gathered regions. The means for fastening the diaper are affixed to the waist portions between the pocket and the other of the sheets.
Preferred embodiments of the present invention are detailed in the dependent claims.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be described in greater detail in the following by way of example only and with reference to the attached drawings, in which:
FIG. 1 is a plan view of an absorbent article in accordance with the present invention having elasticized leg cuffs, the article being illustrated during a stage of the manufacturing process;
FIG. 2 is a partial sectional perspective view taken substantially along the line II--II of FIG. 1, with the article in a finished condition;
FIG. 3 is a sectional view substantially along the line III--III of FIG. 1; and
FIG. 4 is a sectional view corresponding essentially to that of FIG. 3, illustrating a further embodiment of the absorbent article according to the invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
In the drawings, an absorbent article in the form of a disposable diaper is generally denoted by reference numeral 10. For reasons of clarity, the diaper 10 is shown in FIG. 1 in a stage occupied by the diaper during its manufacture. Accordingly, reference numeral 12 denotes joining lines, for example glue lines or heat bonding lines, about which the diaper is gathered in a manner known per se to form a pair of inner cuffs 14 (FIG. 2) through which an elastic chord 16 runs. Due to the gathering of the diaper about the joining lines 12, the diaper adopts a generally hour glass shape with a narrow centrally disposed cro
REFERENCES:
patent: 4050462 (1977-09-01), Woon et al.
patent: 4437860 (1984-03-01), Sigl et al.
patent: 4486192 (1984-12-01), Sigl
patent: 4904251 (1990-02-01), Igave et al.
patent: 5176671 (1993-01-01), Roessler et al.
patent: 5454803 (1995-10-01), Sayeser et al.
patent: 5476458 (1995-12-01), Glaug et al.
Nilsson Lennart
Ronnberg Peter
Molnlycke AB
Reichle K. M.
Weiss John G.
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