Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...
Patent
1997-08-15
1999-04-27
Polutta, Mark O.
Surgery
Means and methods for collecting body fluids or waste material
Absorbent pad for external or internal application and...
604386, A61F 1315
Patent
active
058975470
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to disposable absorbent articles comprising a mechanical fastening system.
Such disposable absorbent articles are know from EP-A-0 321 234.
Known mechanical fastening systems for use in disposable absorbent articles comprise tape tabs comprising a hook-type fastening element in the back waist region wherein the hooks mechanically engage with a landing member. The landing member is a loop-type material located in the front waist region on the garment-facing side of the article which entangles with the hooks of the tape tabs to form a closure having resistance against peel forces and shear forces.
The loop-type materials used for the landing members of the known mechanical fastening systems are relatively expensive materials.
Furthermore, the known loop-type materials are attached to the garment-facing side of the backsheet and form an extra layer that increases the bulk of the absorbent articles upon compression-packaging of these articles in a compressed array.
By attaching relatively small sized patches of loop-type material to the backsheet, the complexity of the production process for making an absorbent article is increased. The addition of larger patches, or strips of loop-type material to the garment-facing side of the backsheet, may cause the elastic expansion of the materials in the front waist region of the absorbent article to be impaired.
Finally, when an elasticated front waist region is provided in an absorbent article, the material of the backsheet in this region will comprise a number of gathers or surface irregularities, caused by the contraction of the elastic element in the front waist region. Patches of loop-type material cannot properly be attached to such irregularly shaped surfaces.
It is therefore an object of the present invention to provide an absorbent article having a mechanical fastening system which allows good conformability of the front waist region to the movements of the user and which allows dynamic and self-adjusting fit of the front waist region.
It is another object of the present invention to provide an absorbent article having a mechanical fastening system which can easily be applied in the region of an elasticated front waist region.
It is again another object of the invention to provide a mechanical fastening system which is of relatively simple construction and which is cost-effective.
It is a further object of the invention to provide an absorbent article comprising a mechanical fastening system which is of low bulk when packed in a compressed array.
SUMMARY OF THE INVENTION
An absorbent article according to the invention comprises a garment-facing backsheet having two longitudinal sides, a front transverse edge, and a back transverse edge. The article has a mechanical fastening system for attaching the article to a wearer, comprising at least two hook-type fastening members located in the region of the back transverse edge and extending transversely beyond each longitudinal side. A loop-type landing member is located in the region of the front transverse edge for mechanically engaging with the hook-type fastening members, wherein the landing member is elastically extensible by at least 5% in the direction of the front transverse edge.
The landing member may be made of an elastic loop-type material, such as for instance an elastic non-woven material. The elastic loop-type material in such an embodiment forms the front waist elastic element of the front waist region while simultaneously allowing the hook-type material to fasten the absorbent article on the wearer. Alternatively, the landing member comprises a non-elastic loop-type material, which is laminated to an elastic film.
The above landing members may be attached to the garment-facing side of the front waist region of the backsheet in a pre-stretched manner, such that the contraction of the landing member contracts the front waist region in a number of gathers. Alternatively, the landing member may be attached to the backsheet in a relaxed state, and may be su
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Miller Steven W.
Polutta Mark O.
Rasser Jacobus C.
The Procter & Gamble & Company
Weirich David M.
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