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Two bar stitch bonded loop fastener for diaper and related method



Published May 12, 2014
Related Searches: diaper composite film
US Patent No.: 8,632,517 B2
Inventor(s): Martin Wildeman, Spartanburg, SC, US; and Lori Shannon Sears, Taylors, SC, US.
Company: Tietex International, Ltd, Spartanburg, SC, US.
Filed: 7/21/10
Issued: 1/21/14

A fastening system for a diaper, the fastening system comprising: a fastening tab including a segment of hook material having a plurality of outwardly projecting hooking elements; and a segment of loop material disposed at a portion of the diaper remote from the fastening tab, the segment of loop material including a plurality of outwardly projecting loop elements adapted to engage the hooking elements in juxtaposed contacting relation, wherein the loop material comprises a composite sheet of stitch bonded construction including a polymer film substrate layer having a mass per unit area of not greater than 100 grams per square meter, the composite sheet of stitch bonded construction further including a first plurality of yarn elements extending in stitched relation through the substrate layer to define a plurality of parallel stitch lines of flat stitches extending along the machine direction of the sheet material, wherein the parallel stitch lines of flat stitches cooperatively form a ground layer substantially covering an upper surface of the substrate layer, and wherein the composite sheet of stitch bonded construction further includes a second plurality of yarn elements extending in stitched relation through the substrate layer in zigzag crossing relation between parallel needle lines to define said plurality of outwardly projecting loop elements extending above the ground layer and wherein the second plurality of yarn elements is present at a stitch notation of (0-1, 2-1).