초록 ▼

A diaper is provided with an adhesive fastening tab of the Y-configuration type which includes a welded joinder at the branching point between the fastening tape and release tape portions of the tab, the welded joinder being free of the diaper. The welded joinder comprises a direct weld between the

A diaper is provided with an adhesive fastening tab of the Y-configuration type which includes a welded joinder at the branching point between the fastening tape and release tape portions of the tab, the welded joinder being free of the diaper. The welded joinder comprises a direct weld between the substrates of the fastening tape and release tape portions of the tab, or welds between each of those two substrates and an intermediate junction substrate.

대표청구항 ▼

[ What is claimed is:] [1.] In a disposable diaper provided with a tab fastening system including a tab fastener of the Y-configuration type, said tab fastener having length, width and thickness directions and dimensions, and further having, with respect to its length direction, first and second ter

[ What is claimed is:] [1.] In a disposable diaper provided with a tab fastening system including a tab fastener of the Y-configuration type, said tab fastener having length, width and thickness directions and dimensions, and further having, with respect to its length direction, first and second terminal segments and a central segment between the terminal segments, the tab fastener comprising first and second tab portions each comprising a separate planar resinous film tape substrate having a resinous film thickness and a layer of adhesive supported on the substrate, said first tab portion comprising a release tape portion extending along said first terminal segment and also along at least a portion of said central segment, said second tab portion comprising a fastening tape portion overlying said release tape portion and extending along said first terminal segment and said central segment and said second terminal segment, a release coating between said fastening tape portion and said release tape portion along said first terminal segment of said tab whereby said fastening tape portion is releasable from said release tape portion along said first terminal segment for freeing and deployment of the end of said fastening tape portion associated with said first terminal segment, the improvement wherein said separate substrates of said first and second tab portions are joined by a welded joinder of the resinous films of said substrates, said films being disposed in superposed relationship at said welded joinder, said welded joinder extending across said width direction of said tab fastener at said central segment, said welded joinder being free of connection with said diaper and the strength of said joinder being independent of the bonding strength of the adhesive of said adhesive layers, and said welded joinder having a break strength substantially as high as a break strength of the substrates.