Patent ID: 6720063
Filing Date: 2004-04-13
Classification: A61F,B32B,Y10T

Abstract:
An elastically stretchable composite sheet, comprising:a first web having x- and y-directions orthogonal to each other and being elastically stretchable at least in said y-direction; and a second web comprising thermoplastic synthetic resin fibers and being inelastically stretchable in said y-direction, said first and second webs being bonded to each other in bonding zones intermittently distributed in said y-direction; wherein a length of each of said thermoplastic synthetic resin fibers that extends between each pair of the adjacent bonding zones where said thermoplastic synthetic resin fiber is bonded to said first web is longer than a straight distance between said adjacent bonding zones; said first web is a fibrous web comprising component fibers of elastic material; each of said thermoplastic synthetic resin fibers has a cross-section taken in a direction orthogonal to a longitudinal direction of said thermoplastic synthetic resin fiber, said cross section having a width w and a height h, as measured in orthogonal directions, dimensioned so that a ratio of h/w is less than 0.5; said second web further comprises sections of unsplit conjugate fibers, said thermoplastic synthetic resin fibers branching from the conjugate fibers which comprise at least two types of thermoplastic synthetic resin that are splittable into said thermoplastic synthetic resin fibers each made of one of said types of resin; and the sections of unsplit conjugate fibers are bonded to said first web in said bonding zones.