Abstract A disposable diaper of the type having an impervious thin film backing is provided with integral fasteners comprising narrow strips of pressure-sensitive tape characterized by particularly advantageous properties. The tape has an adhesive mass strength of over 400 gms. per 3/4 inch width, a tensile strength in the long direction of the strip of at least 10 lbs. per inch of width, and an Elmendorf tear of at least 150 grams in the cross direction of the strip. One end of the strip is attached to the thin film backing of the diaper and adheres thereto so firmly that it will tear a 1 mil thick film rather than release. The other end of the strip extends beyond the diaper edges and is covered with a protective release sheet which adheres to the adhesive with an attachment force of from about 50 to about 300 gms. per 3/4 inch of width. This latter force is sufficient to retain the protective sheet on the strip during processing and handling but will permit stripping the sheet off the adhesive without damaging the adhesive, the film backing, or the strip itself when the diaper is ready for use.
The diaper fastening arrangement of claim 1 in which said film backing is about 1 mil thick and the adhesive attachment of said strip thereto is such that it will tear said film backing without releasing therefrom when sufficient force is applied thereto.
Claim 2
Dependent Claim
24 words
The diaper fastening arrangement of claim 1 in which the free ends of the tape strip extend beyond the respective edges of the diaper.
Claim 3
Dependent Claim
30 words
The diaper fastening arrangement of claim 3 in which a portion of the protective sheet covering the free ends of the diaper extends inwardly over the face of the diaper.
Claim 4
Dependent Claim
27 words
The diaper fastening arrangement of claim 1 in which said cover sheet has raised embossments on the surface and said embossments are in contact with said adhesive.
Claim 5
Dependent Claim
45 words
The diaper fastening arrangement of claim 5 in which the raised area of said embossments comprise from about one third to about one half of the surface area of said film and the peeling width of said embossments range between about 0.2 and 2.5 mm.
Claim 6
Dependent Claim
25 words
The diaper fastening arrangement of claim 5 wherein said protective cover sheet comprises a plastic film of from about 3 to 6 mils in thickness.
Claim 7
Dependent Claim
25 words
The diaper fastening arrangement of claim 7 in which said plastic film is selected from the group consisting of polyethylene, polypropylene, polyester, and polyvinyl chloride.