Patent ID: 7138024
Filing Date: 2006-11-21
Classification: B32B,D04H

Abstract:
1. A process for producing a composite film having a textile surface and elastic and nonelastic regions comprising sequentially in the named order the steps of: (a) permanently extending at least one fibrous web at right angles to a direction of web transport to generate an increase in width of the fibrous web; (b) applying pulling tension to the fibrous web in the direction of web transport to form the increase in width of the fibrous web into foldlets; (c) applying said fibrous web while said fibrous web is under said pulling tension to a surface of a transversely elastic film web of a thermoplastic elastomer; and (d) joining said fibrous web while said fibrous web is under said pulling tension and said elastic film is in an untensioned state when being joined to the fibrous web; wherein the step of joining comprises uniformly bonding the fibrous web to the elastic film web in at least one section to form a nonelastic region of the composite film and bonding the fibrous web to the elastic film web at contact sites spaced apart at right angles to the direction of web transport to form an elastic region of the composite film.