Surgery – Means and methods for collecting body fluids or waste material – Absorbent pad for external or internal application and...
Patent
1996-10-04
1999-01-05
Polutta, Mark O.
Surgery
Means and methods for collecting body fluids or waste material
Absorbent pad for external or internal application and...
604393, 604386, 156164, 156204, A61F 1315
Patent
active
058555749
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a method of manufacturing an absorbent article in the form of a pants-type diaper or a sanitary panty, beginning with a flat diaper blank which comprises an elongated absorbent body enclosed between two casing sheets which at opposing front and rear end parts of the absorbent body have side parts which extend laterally beyond the absorbent body on both sides thereof, said method comprising the step of folding the blank about a transverse axis so that the end edges of said side parts will lie edge-to-edge. The invention also relates to an absorbent article manufactured in accordance with the method.
BACKGROUND OF THE INVENTION
Present-day all-in-one diapers are being replaced to an ever greater extent with pants-type diapers, or so-called training pants, for slightly older diaper-wearing children. Pants-type diapers have a number of good features. They fit well on the wearer, they are easy to put on and take off with the child in a standing position, they sit firmly in place after having been put onto a child, and conform to the anatomy of the child as the child moves, in a comfortable fashion. Moreover, pants-type diapers resemble conventional underpants and it is easy to understand how they shall be used, thereby in many instances enabling somewhat older diaper-wearing children to perform themselves the simple operations required in putting on the pant diaper.
EP A2-0,320,991 defines a pants-type diaper which is produced by folding a blank of the aforesaid kind in the manner described in the introduction, whereafter the bordering side edges of the side parts are fastened together by ultrasonic welding or gluing. A pants-type diaper manufactured in this way will necessarily have at least two outwardly standing side seams which, when the diaper is worn, are subjected to loads or forces that are directed generally at right angles to the bonded surfaces, i.e. to so-called peel forces. Consequently, the side seams must be sufficiently strong to withstand the forces to which they are subjected, meaning that a high degree of precision is required when joining the surfaces together and also when selecting the materials to be joined. Neither are the seams attractive from an aesthetic point of view, which is a negative feature from a commercial aspect.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a pants-type diaper or a sanitary panty having side seams which from a loading aspect are more advantageous than side seams that are subjected to peeling forces, and which has aesthetically attractive side parts.
This object is achieved in accordance with the invention by means of a method of the kind defined in the introduction which is characterized by placing at least one folded band of flexible material between each pair of front and rear side parts that lie opposite one another in the folded state of the blank, and by fastening the free ends of the band to respective adjacent side parts.
According to one preferred embodiment of the invention, the folded bands are placed on and fastened to the front or rear side parts of the blank prior to folding said blank, and the band is folded in a bellows like fashion prior to fastening the same to the side parts.
This method can also be applied even when the blanks form a continuous string, i.e. prior to separating the individual blanks from said string.
When, for reasons of a production/technical nature, the blanks are separated individually from a continuous string of blanks prior to bringing the side parts together, it is proposed in accordance with the invention that a method of tie kind defined in the introduction will include the characterizing steps of folding at least one band of flexible material around each pair of the front and rear side parts of the web which oppose one another in the folded state of said web, and by fastening the free ends of the band to its adjacent side part.
The invention also relates to an absorbent article in the form of a pants-type diaper or sanitary panty, w
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Hedlund Gunilla
Kling Robert
Widlund Urban
Polutta Mark O.
SCA Hygiene Products Aktiebolag
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