Patent ID: 6785937
Filing Date: 2004-09-07
Classification: B29C,B32B,D04H

Abstract:
A process for preparing a necked material comprising the steps of:transporting a neckable nonwoven web having a first width toward a first pair of counter rotating nip rollers having a first surface velocity; longitudinally slitting the nonwoven web into a plurality of nonwoven strips before the nonwoven web reaches the first pair of nip rollers; longitudinally passing the nonwoven strips between the first pair of nip rollers; moving the nonwoven strips a longitudinal distance to a second pair of counter rotating nip rollers having a second surface velocity which is greater than the first surface velocity; and longitudinally passing the nonwoven strips between the second pair of nip rollers to cause necking of the nonwoven strips between the first pair of nip rollers and the second pair of nip rollers; wherein the longitudinal distance is not greater than about forty times a prenecked width of an individual nonwoven strip.