公开(公告)号：US20220314576A1

公开(公告)日：2022-10-06

申请号：US17840518

申请日：2022-06-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Thomas J. Gilbert ,  Shou-Lu G. Wang ,  Neelakandan Chandrasekaran ,  Todd L. Nelson ,  Stanley Rendon ,  Mark A. Peltier ,  Michael R. Berrigan ,  Jerald W. Hall, JR. ,  Stephen M. Sanocki ,  Daniel E. Johnson ,  Bernard G. Rolstad ,  Ibrahim S. Gunes ,  Jayant Chakravarty

IPC: B32B5/02 ,  B32B7/05 ,  B32B5/06 ,  B32B5/24 ,  B32B5/26 ,  B32B37/00 ,  B32B3/26 ,  B32B27/32 ,  B32B27/06 ,  B32B27/12 ,  B32B5/14 ,  B32B5/08 ,  D04H13/00 ,  B32B3/30 ,  B32B5/18 ,  B32B37/06 ,  B32B37/20 ,  D04H1/4291

Abstract: A composite fabric includes a nonwoven fabric layer having non-bonded areas and a structured film layer discontinuously bonded to the nonwoven fabric layer. The discontinuously bonded nonwoven fabric layer and the structured film layer share an overlapping area with at least one set of coincident bond sites. The discontinuously bonded nonwoven fabric does not have another bonding pattern in the overlapping area distinct from the at least one set of coincident bond sites. A method of forming a composite fabric is also described. The method includes forming a fiber layer including a mat of at least partially unconsolidated fibers, positioning a structured film layer and the fiber layer such that they overlap, and discontinuously bonding the mat into a discontinuously bonded nonwoven fabric while simultaneously bonding the structured film layer to the nonwoven fabric layer. An apparatus for forming a composite fabric is also described.