Fastener means for disposable diapers and process of manufacture
First Claim
1. A fastener in the shape of an "S" to be affixed to a disposable diaper during the manufacturing process of the diaper comprising a first end zone, a central elastic zone, and a second end zone;
- the side of said second zone facing the central zone being coated with a pressure-sensitive adhesive which in turn is covered with a protective element and connected to said central zone by a continuous or discontinuous row of glue parallel to the folds of said fastener.
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Accused Products
Abstract
Fastener means for disposable diapers comprising a band or strip of material folded in the shape of an "S" comprising a first end zone, a central zone, and a second end zone; at least the central zone being elastic and the side of the second zone facing the central zone being coated with a pressure-sensitive adhesive which in turn is covered with a protective material which in turn is connected to the central zone by a continuous or discontinuous row of glue parallel to the S-fold of the fastener. The fastener can be easily manufactured on an industrial scale; can be conveniently affixed to a diaper during the manufacture of the diaper; permits convenient fastening of the front and rear parts of a disposable diaper, and accommodates for the movements of a baby wearing the diaper.
60 Citations
18 Claims
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1. A fastener in the shape of an "S" to be affixed to a disposable diaper during the manufacturing process of the diaper comprising a first end zone, a central elastic zone, and a second end zone;
- the side of said second zone facing the central zone being coated with a pressure-sensitive adhesive which in turn is covered with a protective element and connected to said central zone by a continuous or discontinuous row of glue parallel to the folds of said fastener.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. Process for the manufacture of a fastener comprising the sequential steps of
(a) applying a single row of glue to one side of an elastic strip near one lateral edge; -
(b) applying a row of glue to the opposite side of the strip treated in (a) adjacent each lengthwise edge; (c) combining the strip treated in (b) with first and second paper tapes coated with a pressure-sensitive adhesive, said adhesive being covered with a protective element;
the side of said strip provided with a single row of glue coming into contact with the side of the first paper tape without adhesive, and the side of said strip with two rows of glue coming into contact with the protective element covering the coated side of the second paper tape;(d) winding said layered material of (c); and (e) cutting the layered material of (d) into a series of fasteners when manufacturing diapers and applying said fasteners to diapers.
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17. Process for the manufacture of a fastener comprising the steps of
(a) applying three rows of glue to one side of an elastic strip whereby a first row is adjacent a lengthwise edge, a second row is adjacent the first row, and a third row is adjacent the other lengthwise edge; -
(b) applying a row of glue to the other side of the strip treated in (a) adjacent to the lengthwise edge, on that side where said strip is provided only with one row of glue; (c) combining the strip treated in (b) with first and second paper tapes of which one side is coated with a pressure-sensitive adhesive, said adhesive being covered with a protective element so that each lengthwise edge of the strip is respectively fixed to the edge of one paper tape on the side coated with a pressure-sensitive adhesive; (d) folding the structure obtained in (c) into an "S"; and (e) cutting the layered structure obtained in (d) into a series of fasteners at the time of diaper manufacture and applying said fasteners to diapers.
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18. In combination a disposable diaper comprising an absorbing material including a padding of cellulosic fibers placed between an impermeable support sheet and a permeable non-woven material;
- and an S-shaped adhesive fastener comprising a first end zone, a central elastic zone, and a second end zone;
the side of said second zone facing the central zone being coated with a pressure-sensitive adhesive which in turn is covered with a protective element and connected to said central zone by a continuous or discontinuous row of glue parallel to the folds of said fastener, said first end being firmly fixed to the support sheet at its upper end.
- and an S-shaped adhesive fastener comprising a first end zone, a central elastic zone, and a second end zone;
Specification