3m Innovative Properties Company

Bong Y Yeom

Satinder K Nayar

Manjiri T Kshirsagar

Paul A Martinson

Fuming B Li

Pierre Legare

John M Sebastian

Kenneth J Krepel

Timothy J Rowell

Ryan D Kracht

Milton Loureiro De Mello, Jr

Christopher A Hurley

Andre D Jorge

Kenneth A Ebel

Steven J Richter

Jonathan J Stanton

Fabiano Gonzaga Fumes

A pleated filter element comprising a pleated filter media comprising a plurality of oppositely-facing pleats with a pleat direction and with a plurality of upstream and downstream pleat tips and pleat valleys, wherein the pleated filter media comprises two corrugated edges and two noncorrugated edges. The first (second) corrugated edge of the pleated filter media comprises an edge dam of hardened adhesive that occupies the upstream and downstream pleat valleys at a location laterally inwardly proximate the first (second) corrugated edge and that extends along an entire longitudinal extent of the pleated filter media. The pleated filter media is a multilayer media comprising an organic polymeric nonwoven web, that exhibits a Percent Penetration of less than 5, laminated with a fiberglass prefilter layer that is disposed upstream of the primary filtration layer and that exhibits a Percent Penetration of greater than about 70.

Pleated filter element comprising pleated filter media with edge dams, and method of making and using

Respirator

Laminated articles are provided including a porous fibrous nonwoven matrix and guanidine-functionalized metal silicate particles enmeshed within the porous fibrous nonwoven matrix. The laminated articles further include a first substrate and a second substrate sealed to the first substrate. Methods of making laminated articles and methods of using laminated articles are also provided.

Laminated articles for microbial removal and low pressure drop filtration, methods of making, and methods of using same

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Woodbury, MN, United States of America

Bong Y Yeom