Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...
Patent
1996-01-05
1997-09-30
Weiss, John G.
Surgery
Means and methods for collecting body fluids or waste material
Absorbent pad for external or internal application and...
604358, 604378, 156164, A61F 1315, A61F 1320
Patent
active
056721668
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a disposable absorbent article of hygiene, such as a diaper or dressing for the incontinent, of the type comprising an absorbent pad arranged between an impervious outer supporting sheet and a permeable inner sheet.
2. Description of the Invention
More particularly, the present invention relates to such a disposable absorbent article of hygiene comprising a double leakproofing barrier consisting of a peripheral first leakproofing barrier forming a confinement pouch and arranged substantially over the whole periphery of the absorbent pad, supplemented by a second leakproofing barrier made up of two vertical, lengthwise fevers which are situated on each side of the peripheral first barrier.
Articles of hygiene are known, for example, from Patent Application GB-A2 161 059 (Kimberly-Clark). According to this document two leakproofing flaps lie, above the absorbent pad, pointing at each other so that their elasticated distal edges are situated near one another. The leakproofing side flaps are made by a double folding of the liquid-permeable inner sheet covering the liquid-impervious supporting sheet and the absorbent pad secured to this supporting sheet. At their two ends corresponding to the two edges of the diaper the flaps are secured so as to be always turned inwards, one towards the other, without being able to fold outwards, for example when the article of hygiene is put on the user. These side flaps improve the leakproofing of the articles of hygiene in the lateral direction especially in the crotch region. On the other hand, the risks of leakages continue to exist in the two belt regions.
It is furthermore known, for example from Patent Application GB-A2 159 693 (Kimberly-Clark) to provide in each belt region of such an article of hygiene a pouch consisting of a flap extending transversely from a lengthwise edge of the article of hygiene in the direction of the opposite lengthwise edge, it being possible for the innermost edge of this flap to be optionally elasticated. These pouches improve the leakproofing only in the belt regions.
It has already been proposed to improve, in one and the same article of hygiene, both the side leakproofing, especially in the crotch region, and leakproofing in the belt regions. Thus, according to U.S. Pat. No. 4,662,877 (Williams), the inner sheet of such an article of hygiene is covered with an additional sheet comprising above the absorbent pad a rectangular cutout whose two lengthwise edges are elasticated. It should be noted that, according to this document, the additional sheet is secured to the permeable inner sheet along two opposite transverse edges corresponding to the transverse edges of the article of hygiene and along two opposite lengthwise edges situated outside the crotch elastic members of the article of hygiene, which elastic members themselves are situated outside the opposite lengthwise edges of the absorbent pad. Such an additional sheet comprising an opening or rectangular cutout with elasticated lengthwise edges entails a high usage of material, especially because of the discarded material resulting from the formation of the rectangular cutout made in the additional sheet. Now, in the case of disposable absorbent articles of hygiene such as diapers it is essential to reduce as much as possible the quantities of material which is employed and hence the cost of manufacture of the articles.
Patent Application EP-A-0 219 326 (Procter & Gamble) describes a disposable one-piece diaper comprising an impervious supporting sheet, an absorbent pad and a permeable cover sheet covering the pad, this cover sheet being provided with two lengthwise side flaps forming antileakage barriers. These flaps may consist of added strips secured to the supporting sheet along their proximal lengthwise edges and secured to the cover sheet along their distal lengthwise edges near the transverse edges of the diaper. In another embodiment these flaps consist of a double fold of the cover sheet
REFERENCES:
patent: 4662877 (1987-05-01), Williams
patent: 4846825 (1989-07-01), Enloe et al.
O Ki Yong
Peaudouce
Weiss John G.
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