公开(公告)号：US20210229012A1

公开(公告)日：2021-07-29

申请号：US17263875

申请日：2019-07-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Zhiqun Zhang ,  Edward Keith Willis ,  Jacob J. Thelen ,  Daniel E. Johnson ,  Bryan L. Gerhardt ,  Michael R. Berrigan

IPC: B01D39/16 ,  B01D46/52 ,  B01D46/00 ,  D04H3/033 ,  D04H3/16 ,  D06C15/02 ,  D06C15/08

Abstract: A relofted, spunbonded nonwoven web exhibiting a solidity of from less than 8.0%, to at least 3.0%, and exhibiting a Quality Factor of at least 0.30. Methods of making a relofted web; and, methods of using a relofted web as an air-filtration web, e.g. as a filter media or a layer thereof.

公开(公告)号：US20170216756A1

公开(公告)日：2017-08-03

申请号：US15500752

申请日：2015-08-24

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Andrew R. Fox ,  Glen O. Gregerson ,  Bryan L. Gerhardt

IPC: B01D46/52 ,  F24F13/18 ,  E06B7/02 ,  F24F3/16

CPC classification number: B01D46/521 ,  B01D46/0002 ,  B01D46/0032 ,  B01D46/10 ,  B01D46/4227 ,  B01D46/442 ,  B01D46/448 ,  B01D46/46 ,  B01D46/523 ,  B01D2265/04 ,  B01D2275/203 ,  B01D2279/35 ,  B01D2279/40 ,  E06B7/02 ,  E06B7/03 ,  E06B2007/023 ,  F24F3/1603 ,  F24F13/18 ,  F24F13/28 ,  F24F2003/1635 ,  F24F2003/1657 ,  F24F2221/20

Abstract: The present disclosure relates to air filters. More particularly, it relates to air filters including pleated filter media that can be uniformly expanded and contracted. In some embodiments, the air filters are adjustably sized air filter systems. In some embodiments, the air filters can be used in a window opening.

公开(公告)号：US12017175B2

公开(公告)日：2024-06-25

申请号：US17263834

申请日：2019-07-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Zhiqun Zhang ,  Nhat Ha Thi Nguyen ,  Jimmy M. Le ,  Glen O. Gregerson ,  Bryan L. Gerhardt ,  Philip D. Eitzman

IPC: B01D46/52 ,  B01D39/16 ,  B01D46/00 ,  B31D5/00

CPC classification number: B01D46/523 ,  B01D39/163 ,  B01D46/0001 ,  B01D46/0005 ,  B01D46/0032 ,  B31D5/0082 ,  B01D2239/0435 ,  B01D2239/0618 ,  B01D2239/0627 ,  B01D2239/10 ,  B01D2265/04 ,  B01D2265/06 ,  B01D2275/50

Abstract: A pleated air filter media is provided. The pleated air filter media comprises a plurality of upstream linear bridging filaments that are extrusion-bonded to at least some of a plurality of upstream pleat tips of a fibrous web, and a plurality of downstream continuous-contact filaments that are extrusion-bonded to a downstream face of the fibrous web. Methods of making and using the same are also provided.

公开(公告)号：US20230372854A1

公开(公告)日：2023-11-23

申请号：US18229021

申请日：2023-08-01

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Changwen Li ,  Andrew R. Fox ,  Bryan L. Gerhardt

IPC: B01D46/10 ,  B01D46/52 ,  B01D46/16

CPC classification number: B01D46/103 ,  B01D46/523 ,  B01D46/10 ,  B01D46/16 ,  B01D2275/203

Abstract: A conformable, unframed pleated air filter, comprising a plurality of bridging filaments on at least one face of the pleated air filter.

公开(公告)号：US11305224B2

公开(公告)日：2022-04-19

申请号：US16606596

申请日：2017-04-18

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Andrew R. Fox ,  Himanshu Jasuja ,  Mikhail A. Belkin ,  Bryan L. Gerhardt ,  Glen O. Gregerson ,  Gerry A. Hoffdahl ,  Jonathan M. Lise ,  Tien T. Wu

IPC: B01D46/00 ,  B01D46/52

Abstract: An air filter media (10) including a pleated fibrous filtration web (8) with a first major side (2) that includes at least one sorbent-loaded area (26) in which sorbent particles (14) are present on a first major surface (25) of the pleated fibrous filtration web (8), at least some of the sorbent particles (14) being post-pleat-deposited sorbent particles.

公开(公告)号：US20180021716A1

公开(公告)日：2018-01-25

申请号：US15547182

申请日：2015-01-29

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Changwen Li ,  Andrew R. Fox ,  Bryan L. Gerhardt

IPC: B01D46/10 ,  B01D46/52

CPC classification number: B01D46/103 ,  B01D46/10 ,  B01D46/523 ,  B01D2275/203

Abstract: A conformable, unframed, non-self-supporting pleated air filter, comprising: a conformable, unframed, non-self-supporting, pleated air filter media with an upstream face and a downstream face, wherein the conformable, unframed, non-self-supporting, pleated air filter media comprises a plurality of oppositely-facing pleats with a pleat direction and with a plurality of upstream pleat tips and upstream pleat valleys and downstream pleat tips and downstream pleat valleys, the pleated air filter media further comprising a plurality of bridging filaments on the downstream face of the pleated air filter media.

公开(公告)号：US20170252590A1

公开(公告)日：2017-09-07

申请号：US15519888

申请日：2015-10-21

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Seyed A. Angadjivand ,  Nhat Ha T. Nguyen ,  Bryan L. Gerhardt ,  Jimmy M. Le ,  John M. Brandner ,  Stephen M. Sanocki

IPC: A62B23/02 ,  A41D13/11

CPC classification number: A62B23/025 ,  A41D13/11 ,  A41D13/1115 ,  B01D39/1623

Abstract: Various embodiments of a filtering face-piece respirator and a method of making such respirator are disclosed. In one or more embodiments, the filtering face-piece respirator includes a mask body and a harness attached to the mask body. The mask body includes a corrugated filtering structure including peaks separated by valleys, and bridging filaments that are in discontinuous contact with at least one of an interior surface and an exterior surface of the corrugated filtering structure. The bridging filaments are attached to at least some of the peaks.

公开(公告)号：US12226726B2

公开(公告)日：2025-02-18

申请号：US18229021

申请日：2023-08-01

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Changwen Li ,  Andrew R. Fox ,  Bryan L. Gerhardt

IPC: B01D46/10 ,  B01D46/16 ,  B01D46/52

Abstract: A conformable, unframed pleated air filter, comprising a plurality of bridging filaments on at least one face of the pleated air filter.

公开(公告)号：US20230233968A1

公开(公告)日：2023-07-27

申请号：US18011959

申请日：2021-06-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： HIMANSHU JASUJA ,  Nathan E. Schultz ,  Seth M. Kirk ,  Bryan L. Gerhardt ,  Daniel C. Duan ,  Michael R. Berrigan

IPC: B01D39/16 ,  B01D46/52 ,  B01D46/00

CPC classification number: B01D39/163 ,  B01D46/522 ,  B01D46/0001 ,  B01D2275/10 ,  B01D2239/0407 ,  B01D2239/0435 ,  B01D2239/0622 ,  B01D2239/0627 ,  B01D2239/0636 ,  B01D2239/0668 ,  B01D2239/1291 ,  B01D2239/1233 ,  B01D2279/50

Abstract: A pleated multilayer air filter assembly including a primary filtration layer and a prefilter layer that are bonded to each other and are co-pleated with each other. The primary filtration layer includes meltblown electret fibers. The prefilter layer includes meltspun, spunbonded electret fibers that comprise a radially outer surface comprising polymethylpentene. The ratio of Effective Fiber Diameter of the fibers of the primary filtration layer to Effective Fiber Diameter of the fibers of the primary filtration layer is at least 1.5.

公开(公告)号：US20220096977A1

公开(公告)日：2022-03-31

申请号：US17422560

申请日：2020-01-17

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Zhiqun Zhang ,  Michael R. Berrigan ,  Ignatius A. Kadoma ,  Bryan L. Gerhardt ,  Liming Song ,  John D. Stelter ,  Zackary J. Becker

IPC: B01D39/16 ,  B01D46/10 ,  B01D46/52 ,  B32B5/02 ,  B32B5/26 ,  B32B5/08 ,  D04H1/541 ,  D01F8/14 ,  D04H3/011 ,  D04H3/16 ,  D01F1/10 ,  F24F8/108

Abstract: The present disclosure relates to multi-layer composite articles including at least two nonwoven web layers. Each or the layers may be a spunbonded web, and each may include biodegradable materials. The multi-layered composites of the present disclosure are particularly well suited for air filtration, as they can combine a high dust holding capacity with sufficient strength, dimensional stability, and a relatively low pressure drop.