公开(公告)号：US12198667B2

公开(公告)日：2025-01-14

申请号：US17602649

申请日：2020-04-13

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Michelle M. Mok ,  Michael R. Berrigan ,  Nicole D. Petkovich ,  Jonathan H. Alexander ,  Michael S. Wendland ,  Seungkyu Lee ,  Hassan Sahouani

IPC: G10K11/165 ,  D06M11/74 ,  D06M11/77 ,  D06M15/01 ,  D06M15/227 ,  D06M23/08 ,  G10K11/168

Abstract: Provided are acoustic articles, and related methods, that include a porous layer and heterogeneous filler received in the porous layer. The heterogeneous filler can include clay, diatomaceous earth, graphite, glass bubbles, polymeric filler, non-layered silicate, plant-based filler, or a combination thereof, and can have a median particle size of from 1 micrometer to 1000 micrometers and a specific surface area of from 0.1 m2/g to 800 m2/g. The acoustic article can have an overall flow resistance of from 100 MKS Rayls to 8000 MKS Rayls. The acoustic articles can serve as acoustic absorbers, vibration dampers, and/or acoustic and thermal insulators.

公开(公告)号：US20190278009A1

公开(公告)日：2019-09-12

申请号：US16419339

申请日：2019-05-22

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Matthew H. Frey ,  Craig R. Schardt ,  Gary T. Boyd ,  Eric J. Borchers ,  Nicole D. Petkovich

IPC: G02B5/30 ,  G02F1/1335 ,  C01B32/158 ,  G02B5/02 ,  F21V8/00 ,  B82Y15/00

Abstract: An optical construction includes a reflective polarizer layer having a first pass axis and an absorptive polarizer layer having a second pass axis that is substantially aligned with the first pass axis. At least one electrically conductive light scattering layer is arranged between the reflective polarizer layer and the absorptive polarizer layer.

公开(公告)号：US20240379087A1

公开(公告)日：2024-11-14

申请号：US18691974

申请日：2022-08-24

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Nicole D. Petkovich ,  Yongbeom Seo ,  Tongyang Shi ,  Michael R. Berrigan ,  Michelle M. Mok ,  Seungkyu Lee ,  Jonathan H. Alexander

IPC: G10K11/165

Abstract: An acoustic article (10) comprising a porous layer (14) and an acoustic absorbing filler (18) embedded within the porous layer, and methods of making the same. The acoustic absorbing filler includes agglomerates comprising porous amorphous silica particles and a binder. The acoustic absorbing filler has a median sieved particle size of 100 i.un to 2000 i.un. The acoustic article has a normal incidence acoustic absorption of no less than 0.09 a at 400 Hz.

公开(公告)号：US12099223B2

公开(公告)日：2024-09-24

申请号：US16419339

申请日：2019-05-22

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Matthew H. Frey ,  Craig R. Schardt ,  Gary T. Boyd ,  Eric J. Borchers ,  Nicole D. Petkovich

IPC: G02B5/30 ,  B82Y15/00 ,  C01B32/158 ,  F21V8/00 ,  G02B5/02 ,  G02F1/1335 ,  G02F1/13357 ,  G02B5/124

CPC classification number: G02B5/30 ,  B82Y15/00 ,  C01B32/158 ,  G02B5/02 ,  G02B6/0056 ,  G02F1/133536 ,  G02F1/13362 ,  G02B5/124 ,  G02B2207/101 ,  G02B2207/107 ,  G02F1/133606 ,  G02F2203/02

Abstract: An optical construction includes a reflective polarizer layer having a first pass axis and an absorptive polarizer layer having a second pass axis that is substantially aligned with the first pass axis. At least one electrically conductive light scattering layer is arranged between the reflective polarizer layer and the absorptive polarizer layer.

公开(公告)号：US20230326443A1

公开(公告)日：2023-10-12

申请号：US18044473

申请日：2021-09-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Michelle M. Mok ,  Nicole D. Petkovich ,  Michael R. Berrigan ,  Yongbeom Seo ,  Andrew J. Hatch ,  Kevin A. Frankel ,  Seungkyu Lee

IPC: G10K11/165 ,  G10K11/168 ,  D04H3/16 ,  D04H3/007 ,  D06M23/08 ,  D06M11/74 ,  D04H1/56 ,  D04H1/413 ,  D04H1/4291

CPC classification number: G10K11/165 ,  G10K11/168 ,  D04H3/16 ,  D04H3/007 ,  D06M23/08 ,  D06M11/74 ,  D04H1/56 ,  D04H1/413 ,  D04H1/4291 ,  D10B2321/022 ,  D06M2101/20

Abstract: An acoustic absorbing filler, the acoustic absorbing filler comprising agglomerates comprising a first phase comprising a plurality of porous particulates and a second phase comprising a binder; wherein the acoustic absorbing filler has a median sieved particle size of from 100 micrometer to 700 micrometers and a specific surface area of from 50 m2/g to 900 m2/g; wherein the acoustic absorbing filler has a normal incidence acoustic absorption of no less than 0.20 alpha at 400 Hz.

公开(公告)号：US20230395056A1

公开(公告)日：2023-12-07

申请号：US18031854

申请日：2021-10-18

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Nicole D. Petkovich ,  Michelle M. K. Mok ,  Michael R. Berrigan ,  Jonathan H. Alexander ,  Samantha D. Smith ,  Yongbeom Seo ,  Daniel E. Johnson

IPC: G10K11/168 ,  G10K11/165

CPC classification number: G10K11/168 ,  G10K11/165

Abstract: Provided herein are acoustic articles (100) that include a porous layer (102) and heterogeneous filler (104) received in the porous layer. The heterogeneous filler is substantially non-porous and present in an amount of from 0.25% to 7% by volume relative to the total volume of the porous layer and has a specific surface area of from 0.01 m2/g to 1 m2/g. The acoustic article has a flow resistance of from 500 MKS Rayls to 12,000 MKS Rayls.

公开(公告)号：US20230290326A1

公开(公告)日：2023-09-14

申请号：US18044457

申请日：2021-09-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Michelle M. Mok ,  Nicole D. Petkovich ,  Michael R. Berrigan

IPC: G10K11/168

CPC classification number: G10K11/168

Abstract: An acoustic absorbing filler, the acoustic absorbing filler comprising a core particle comprising a polymer; an outer layer coated on the core particle, wherein the outer layer comprise microporous particulates; and wherein the acoustic absorbing filler has a median particle size of from 100 micrometer to 700 micrometers and a specific surface area of from 10 m2/g to 400 m2/g; wherein the acoustic absorbing filler has a normal incidence acoustic absorption of no less than 0.15 at 300 Hz when measured in a 20 mm packed bed.