Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...
Patent
1997-08-15
1998-12-29
Polutta, Mark O.
Surgery
Means and methods for collecting body fluids or waste material
Absorbent pad for external or internal application and...
604391, A61F 1315
Patent
active
058534040
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to disposable absorbent articles comprising a mechanical fastening system.
Such disposable absorbent articles are known from EP-A-0 321 234.
Known mechanical fastening systems for use in disposable absorbent articles comprise hook-type tape tabs in the back waist region which mechanically engage with a landing member. The landing member is a loop-type material which is located in the front waist region and which entangles with the hooks of the tape tabs to form a closure having resistance against peel forces and shear forces.
The known absorbent articles may comprise a landing member which is positioned in a region of the backsheet to engage the hook-type tape tabs when the article is placed in a rolled-up disposal configuration.
The loop-type materials used for the landing members of the known mechanical fastening systems are relatively expensive materials.
Another drawback of the addition of separate patches or strips of loop-type material to the backsheet, is an increase in the complexity of the production process for making an absorbent article.
Furthermore, it is difficult to attach patches or strips of loop-type material to the garment-facing side of an absorbent article in the front waist region when the front waist region is elasticated, or is made of an elastically extensible material, such that the material in the front waist region is gathered. The patches of loop-type material, which are non-elastic, may impair the elastic properties of the front waist region.
It is therefore an object of the present invention to provide an absorbent article having a mechanical closing system which is of simple construction and which is cost-effective.
It is a further object of the present invention to provide an absorbent article having a loop-type mechanical landing member which can effectively and firmly adhere to or be a part of an elasticacted waist region, without impairing the elasticity thereof.
SUMMARY OF THE INVENTION
The absorbent article according to the present invention comprises a backsheet having a garment-facing side and a user-facing side, two longitudinal sides, a front transverse edge, a front waist region located along the the front transverse edge, a back transverse edge end, and a back waist region located along the back transverse edge. The mechanical fastening system of the article comprises at least two hook-type fastening members located in the back waist region. A landing member for mechanically engaging with the hook-type fastening member is located in the front waist region. An inner layer covers at least a part of the user-facing side of the backsheet in the front waist region. The inner layer is doubled-over along a fold line in the front waist region such that the the inner layer is turned outwardly to the garment-facing side and forms the landing member. The material of the inner layer is adapted to mechanically engage with the hook-type fastening members. Attachment means are provided for keeping the region of the front waist edge of the inner layer against the backsheet in a doubled-over configuration.
The inner layer may extend beyond the front transverse edge of the backsheet and may be doubled-over onto the backsheet along the backsheet's front transverse edge. Alternatively, the inner layer may be co-extensive with the backsheet, both the backsheet and the inner layer being doubled-over in the front waist region.
By turning the inner layer that is located on the user-facing side of the backsheet, outwardly, a landing member is obtained in a simple manner. No additional loop-type materials other than those normally used in diaper manufacturing, need be attached to form the landing member.
The landing member which is formed by the material of the inner layer is flexible and can elastically contract and expand to conform to the movements of the wearer. The conformability of the loop-type fastening member according to the invention to the geometry of the wearer in the front waist region, is especially advantageous when elastic
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Miller Steven W.
Polutta Mark O.
Rasser Jacobus C.
The Procter & Gamble & Company
Weirich David M.
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