METHOD OF MAKING NONWOVEN MATERIAL HAVING DISCRETE THREE-DIMENSIONAL DEFORMATIONS WITH WIDE BASE OPENINGS THAT ARE BONDED TO ADDITIONAL LAYER

摘要

A method of forming a composite sheet that is made of a first sheet and a second sheet is disclosed. The first and second sheets are bonded to each other at a number of spaced apart discrete inter-sheet bond locations. The method involves mechanically deforming a precursor nonwoven web to form a first web with deformations therein. The deformations form protrusions that extend outward from the first surface of the first web and openings in the other surface of the web. The method involves feeding the first nonwoven web with the deformations therein into a bonding nip where portions of the first region of the first web outside of the deformations are bonded to the second web to form a base-bonded composite web.