公开(公告)号：US20200086261A1

公开(公告)日：2020-03-19

申请号：US15750744

申请日：2016-08-11

Applicant: Cummins Filtration IP, Inc.

Inventor： Wilson L. CURRIER ,  William C. HABERKAMP ,  Jonathan D. SHEUMAKER ,  Charles W. HAWKINS ,  Kyle ELLISON ,  John C. WILLIAMS ,  Erica C. CLARK-HEINRICH ,  Zemin JIANG

IPC: B01D46/24 ,  B01D46/52 ,  B01D29/13 ,  B01D29/54 ,  B01D46/00

Abstract: A variable efficiency filter media. The variable efficiency filter media is a composite media formed of at least two different types of filter media, such as standard efficiency media and high efficiency media. The variable efficiency filter media has at least two different efficiency levels. The different efficiency levels can be spread across different zones. The filter media types for both the standard and high efficiency media can be spun media, melt blown media, nanofiber media, micro-glass media, cellulose media, carded staple fiber media, and the like. The variable efficiency filter media may be produced by any of an air laid or wet laid process.