ELASTICALLY STRETCHABLE SHEET

摘要

AN ELASTICALLY STRETCHABLE SHEET FOR ARTICLES SUCH AS DIAPERS AND SANITARY NAPKINS. A FLAT SHEET MATERIAL INTRINSICALLY HAVING AN ELASTIC STRETCHABILITY IN THE LONGITUDINAL DIRECTION RATHER THAN IN THE TRANSVERSE DIRECTION IS FORMED WITH A PLURALITY OF PLEATS EXTENDING IN THE LONGITUDINAL DIRECTION AND HAVING A PLURALITY OF CRESTS 6 AND TROUGHS 7 ALTERNATELY REPEATING IN THE TRANSVERSE DIRECTION AND A PLURALITY OF ELASTIC THREADS 4 BEING STRETCHABLE IN THE TRANSVERSE DIRECTION ARE SECURED TO RESPECTIVE APICES 8 OF THE PLURALITY OF CRESTS 6 FORMING FROM OUTER SIDE.