Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...
Patent
1995-08-01
1997-10-07
Polutta, Mark O.
Surgery
Means and methods for collecting body fluids or waste material
Absorbent pad for external or internal application and...
6043851, 156164, 156265, A61F 1315, A61F 1320, B32B 3108
Patent
active
056742150
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to absorbent articles, such as diapers, incontinence guards, sanitary napkins and like articles, and in particular to an absorbent disposable article.
DISCUSSION OF RELATED ART
The curved outer contour desirable to adapt the side-flaps to the wearer's legs so as to hold the absorbent unit correctly positioned, creates difficulties in manufacture. When the casing-layer starting material is in the form of a web of uniform width, the contour can be produced by clipping away edge-parts. The drawback with this method is the wastage that occurs, this wastage increasing the costs of material and requiring separate handling of the waste to remove it from the clipping station during manufacture. Another problem is encountered when the article is to be provided with edge elastic along its outer contour during the manufacture of the elastic article, since it is difficult to apply elastic elements along a curved line when said elements concerned have the form of relatively broad bands which are to be fastened to one or both surfaces of the side-flaps or between layers included therein.
In order to avoid these problems, it is proposed, for instance, in EP-A2-0,145,080, to form an upstanding fold of a centre part of each long side of a rectangular diaper blank. The folds are folded-in over the absorbent body and glued to the inner casing sheet. In this way, the centre part of the diaper, the crotch part, is given a narrower shape without needing to clip-out the contour. Edge elastic can be applied along the straight edges prior to forming the folds. However, this diaper has the drawback that the effective width of the absorbent body is reduced by the overlying folds, in which the liquid-impermeable outer casing sheet is included. The folds may also cause the diaper to be feel uncomfortable when the diaper is worn.
OBJECT AND SUMMARY
The present invention is intended to avoid the aforesaid problems and to provide an absorbent article which has a curved outer contour when in its position of use and which can be manufactured readily without waste and can be readily provided with broad edge elastic when so desired while, at the same time, avoiding a reduction in the active width of the absorbent body when forming the curved outer contour.
In the case of known diapers that are provided with side-flaps, the sheet material from either the inner or the outer casing sheet of the diaper, or from both sheets, is included in the side-flaps. This causes limitations with regard to the choice of a material that will ensure that the side-flaps do not irritate the wearer's skin and, at the same time, possess the elastic properties desired. Accordingly, a further object of the invention is that the material from which the side-flaps are made can be chosen quite independently of the materials used in the inner and the outer casing sheets.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described in more detail with reference to the accompanying drawings, in which
FIG. 1 is a perspective, sectional view taken on the line I--I in FIG. 2 and shows part of a disposable diaper according to a first embodiment of the invention, said diaper being shown laterally extended;
FIG. 2 illustrates that side of the diaper in FIG. 1 which lies remote from the wearer in use, said diaper being shown outstretched in its longitudinal direction to a flat state, and the left and the right halves of the Figure showing the diaper before and after being extended laterally; and
FIGS. 3 and 4 illustrate a second embodiment of the invention in a manner similar to FIGS. 1 and 2.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The Figures illustrate a disposable diaper, which has a so-called hourglass shape in its use state. The diaper includes an absorbent unit 1 which comprises an absorbent body 2 which is enclosed between an inner and an outer casing sheet 3 and 4 respectively. The casing sheet 3 is made of a liquid-permeable and soft sheet material, for instance a nonwoven material, and
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Molnlycke AB
Polutta Mark O.
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