Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...
Patent
1998-02-24
2000-09-05
Ruhl, Dennis
Surgery
Means and methods for collecting body fluids or waste material
Absorbent pad for external or internal application and...
60438501, 60438524, 604387, 604389, A61F 1315
Patent
active
061145971
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to an absorbent product such as a sanitary napkin, a panty liner, an incontinence protector, or similar, intended during use to be placed in the crotch region of a user in order to collect and absorb emitted body fluids, which has means for fastening inside a pair of under-pants, which product comprises an upper part intended during use of the product to be facing towards the user, as well as a lower part intended during use of the product to be facing away from the user.
Products of this type are of fairly small size and are intended to be worn inside a pair of underpants and, during use, to be held in contact against the body of the user by pressure from the underpants. Furthermore, this type of product usually has a fastening means in the form of self-adhesive glue, which allows fastening inside the underpants. Other types of fastening means are also known, such as different sorts of friction coatings and mechanical fastening means, such as press-studs and hook and loop surfaces.
A significant problem with the previously known products is that they are greatly deformed during use, because they are subject to compression between the thighs of the user. The deformation effect when the user moves is especially significant. When an absorbent product is compressed in the transverse direction, the surface directly available for receiving fluid naturally diminishes. This has the consequence that a large number of conventional absorbent products of this type, to an unsatisfactorily large extent, are incapable of preventing soiling and staining of the leg edges of the underpants of the user.
In order to reduce the leakage which occurs through the absorbent product being compressed between the legs of the user, it has become normal to equip the absorbent products with special fastening flaps. For example, from SE 455,668; U.S. Pat. No. 4,285,343; EP 130,848; EP 134,086; and U.S. Pat. No. 4,608,047, it is known to provide sanitary napkins with flexible side flaps or wings extending from the longitudinal side edges. Such side flaps are intended, during use, to be folded around the leg edges of the underpants of the user, and be fastened to the underside of the underpants. The side flaps themselves form a protection against side edge leakage and soiling of the underpants. Furthermore, the deformation of the absorbent body of the napkin is counteracted through the napkin being anchored on the side edges of the underpants and during use being held stretched out between these.
A considerable drawback with equipping absorbent products with such fastening flaps is, however, that many users regard the fact that, during use, the fastening tabs are visible outside the underpants as embarrassing. This means that even sanitary napkins or panty liners with such fastening flaps, for example, cannot be used when the user wears a swimsuit.
Another disadvantage with fastening flaps is that they are comparatively difficult to handle and require many manipulations to be placed in the right way in a pair of underpants. Furthermore, especially with fastening flaps which extend along a considerable length of the side edges of the absorbent product, it can be difficult to fold the fastening flaps around the curved leg edges of the underpants, without chafing and unaesthetic folds arising in the fastening flaps.
Another problem with the use of the known absorbent products is that the forces occurring when the user moves not only give rise to unwanted deformation of the product, but also cause the material in the underpants of the user to be compressed or to be stretched out during the movements. Because the product is fastened in the underpants, it is naturally influenced by movements of the underpants. The user may feel that the product chafes and irritates the skin in the crotch region. Even if the user does not feel any direct physical discomcort, the movements of the product can give rise to psychological discomfort, because the user is continually reminded by the movements o
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Ruhl Dennis
SCA Hygiene Products AB
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