公开(公告)号：US20220380574A1

公开(公告)日：2022-12-01

申请号：US17762782

申请日：2020-10-15

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Fuming B. Li ,  Nathan E. Schultz ,  John M. Brandner

IPC: C08K5/3475 ,  C08K5/3477 ,  C08K5/47 ,  C08J5/18 ,  B01D39/16 ,  B03C3/28 ,  D06M10/02 ,  D04H3/007 ,  D04H3/16

Abstract: Charged polymeric webs, such as electret webs, include a thermoplastic resin and a charge-enhancing additive. The charge-enhancing additive is a dual-function charge-enhancing additive that enhances the charge of the electret and also has anti-microbial properties. The additives are substituted-benzimidazole or substituted-benzothiazole compounds. The electret webs may be a non-woven fibrous web or a film. The electret webs are suitable for use as filter media.

公开(公告)号：US20210316239A1

公开(公告)日：2021-10-14

申请号：US17273351

申请日：2019-09-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Matthew W. Gorrell ,  Hannah L. Stoughton ,  Windy A. Santa Cruz ,  Christine L. McCool ,  Tommie W. Kelley ,  John B. Stender ,  Blake R. Griffith ,  John M. Brandner ,  Yaohua Gao ,  Stephen M. Sanocki ,  Joseph A. Dunbar

IPC: B01D39/16 ,  B01D46/00 ,  B01D46/16 ,  F24C15/20

Abstract: Various embodiments disclosed relate to a fire-resistant filter and methods of making and using the same. A filter includes a fibrous web or sheet comprising fire-resistant fibers, the fire-resistant fibers comprising oxidized polyacrylonitrile (OPAN), flame-retardant (FR) rayon, or a combination thereof.

公开(公告)号：US20230015051A1

公开(公告)日：2023-01-19

申请号：US17757191

申请日：2020-12-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Matthew W. Gorrell ,  Tommie W. Kelley ,  Windy A. Santa Cruz ,  David C. Raithel ,  John B. Stender ,  Stephen M. Sanocki ,  Yaohua Gao ,  John M. Brandner ,  Joseph A. Dunbar

IPC: B01D39/16 ,  B01D46/12

Abstract: Filter media are described. In particular, a filter media includes an intake side, an exhaust side, and a plurality of fibers distributed throughout the filter media. The fibers have a plurality of deniers, and fibers disposed proximate the intake side have a first denier and fibers disposed proximate the exhaust side have a second denier. The first denier is larger than the second denier.

公开(公告)号：US20220176282A1

公开(公告)日：2022-06-09

申请号：US17441478

申请日：2020-03-18

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Hannah L. Stoughton ,  Windy A. Santa Cruz ,  Matthew W. Gorrell ,  John B. Stender ,  Tommie W. Kelley ,  Christine L. McCool ,  Stephen M. Sanocki ,  Yaohua Gao ,  Joseph A. Dunbar ,  John M. Brandner

IPC: B01D39/16 ,  B01D39/20 ,  B01D46/00

Abstract: Filter assemblies are described. In particular, filter assemblies that include a filter frame, a fire resistant filter media, and a metallic layer disposed on and covering a major surface of the filter frame are described. The filter frame is rigid and includes at least one of a polymeric material, wood, or a wood pulp material. Filter assemblies described include flammable or meltable materials yet may retain structural integrity after being exposed to flame.

公开(公告)号：US10575571B2

公开(公告)日：2020-03-03

申请号：US15682600

申请日：2017-08-22

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Seyed A. Angadjivand ,  James E. Springett ,  John M. Brandner ,  Marvin E. Jones ,  Andrew R. Fox ,  Michael R. Berrigan ,  John D. Stelter

IPC: A41D13/11 ,  A62B23/02 ,  D04H3/14 ,  D04H3/16

Abstract: A flat-fold respirator is made from a stiff filtration panel joined to the remainder of the respirator through at least one line of demarcation. The panel contains a porous monocomponent monolayer nonwoven web that contains charged intermingled continuous monocomponent polymeric fibers of the same polymeric composition and that has sufficient basis weight or inter-fiber bonding so that the web exhibits a Gurley Stiffness greater than 200 mg and the respirator exhibits less than 20 mm H2O pressure drop. The respirator may be formed without requiring additional stiffening layers, bicomponent fibers, or other reinforcement and can be flat-folded for storage. Scrap from the manufacturing process may be recycled to make additional stiff filtration panel web.

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：US20160354898A1

公开(公告)日：2016-12-08

申请号：US15165848

申请日：2016-05-26

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Aaron K. Nienaber ,  Ronald W. Ausen ,  John M. Brandner ,  Thomas J. Nelson ,  Stephen M. Sanocki

IPC: B24D3/00 ,  B24D18/00

CPC classification number: B24D3/002 ,  B24D18/0072

Abstract: A laterally-stretched netting comprising a patterned abrasive layer on a first major surface thereof, and methods of making.

Abstract translation: 横向拉伸的网状物，其包括在其第一主表面上的图案化研磨层，以及制造方法。

公开(公告)号：US20220396684A1

公开(公告)日：2022-12-15

申请号：US17762228

申请日：2020-10-07

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Fuming B. Li ,  Nathan E. Schultz ,  John M. Brandner ,  John M. Sebastian

IPC: C08K5/3447 ,  C07D235/18 ,  C07D401/04 ,  C07D417/04 ,  C08K5/47 ,  H01B1/20

Abstract: Charged polymeric webs, such as electret webs, include a thermoplastic resin and a charge-enhancing additive. The charge-enhancing additive is a substituted-benzimidazole compound. The electret webs may be a non-woven fibrous web or a film. The electret webs are suitable for use as filter media.

公开(公告)号：US10960515B2

公开(公告)日：2021-03-30

申请号：US16276881

申请日：2019-02-15

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Aaron K. Nienaber ,  Ronald W. Ausen ,  John M. Brandner ,  Thomas J. Nelson ,  Stephen M. Sanocki

IPC: C09K3/14 ,  B24D3/00 ,  B24D18/00 ,  B24D3/02 ,  B24D11/00

Abstract: A laterally-stretched netting comprising a patterned abrasive layer on a first major surface thereof, and methods of making.

公开(公告)号：US10435827B2

公开(公告)日：2019-10-08

申请号：US15119396

申请日：2015-02-16

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： James P. Endle ,  John M. Brandner ,  Lauren K. Carlson ,  Robert J. Maki ,  Stephen M. Sanocki

IPC: B08B1/00 ,  D04H1/54 ,  D04H1/58 ,  D04H1/64 ,  A47L13/16 ,  A47L17/00 ,  A47L23/04

Abstract: A scouring article including a monolithic nonwoven pad with a semi-densified fibrous layer that is integral to the monolithic nonwoven pad and that provides a major surface of the monolithic nonwoven pad, and methods of making and using.