Patent ID: 8439813
Filing Date: 2013-05-14
Classification: A61F,Y10T

Abstract:
1. A method of manufacturing a top sheet material or back sheet material for use in the manufacture of disposable absorbent articles comprising the steps of: a) splitting a continuous first web of sheet material having substantially straight side edges into a second and third continuous web by a single alternating concave-convex cutting line cut in a longitudinal direction along said continuous first web, said cutting line being distanced from both side edges of said continuous first web; b) shifting the second continuous web in a lateral direction in relation to the third continuous web so that the substantially straight edges of the second and third continuous webs are parallel to and adjacent to each other and longitudinally shifting the second continuous web so that the series of concave edge portions and the series of convex edge portions of the second and third continuous webs are longitudinally aligned with each other; and c) directly or indirectly joining the straight edges of the second and third continuous webs to each other, thereby forming a composite fourth web, wherein the cutting line is made in said first continuous web so that all portions of said cutting line are distanced from a longitudinal centre line of said first continuous web.