Randy Lee Robertson

US Patent:

20130101805, Apr 25, 2013

Filed:

Jul 6, 2011

Appl. No.:

13/808106

Inventors:

Gordon L. Altshuler - Sunfish Lake MN, US
James P. Endle - New Richmond WI, US
David L. Vall - Woodbury MN, US
Gerry A. Hoffdahl - Scandia MN, US
Randy L. Robertson - North St. Paul MN, US
Tien T. Wu - Woodbury MN, US
Mario A. Perez - Burnsville MN, US
Jeremie Peyras-Carratte - Pont Sainte Maxence, FR
Jean-Marie Coant - Saint-Denis, FR
Lahoussaine Lalouch - Noyon, FR

Assignee:

3M INNOVATIVE PROPERTIES COMPANY - ST. PAUL MN

International Classification:

D04H 13/00

US Classification:

428172, 428156, 264109, 264122, 264101

Abstract:

Nonwoven fibrous webs including randomly oriented discrete fibers defining a multiplicity of non-hollow projections extending from a major surface of the nonwoven fibrous web (as considered without the projections), and a plurality of substantially planar land areas formed between each adjoining projection in a plane defined by and substantially parallel with the major surface. In some exemplary embodiments, the randomly oriented discrete fibers include multi-component fibers having at least a first region having a first melting temperature and a second region having a second melting temperature, wherein the first melting temperature is less than the second melting temperature. At least a portion of the oriented discrete fibers are bonded together at a plurality of intersection points with the first region of the multi-component fibers. In certain embodiments, the patterned air-laid nonwoven fibrous webs include particulates. Methods of making and using such patterned air-laid nonwoven fibrous webs are also disclosed.