公开(公告)号：US12033607B2

公开(公告)日：2024-07-09

申请号：US16755787

申请日：2018-10-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Seungkyu Lee ,  Megan A. Creighton ,  Jonathan H. Alexander ,  Michael R. Berrigan ,  Thomas P. Hanschen

IPC: G10K11/168 ,  B32B3/26 ,  B32B5/02 ,  B32B27/20 ,  B32B27/32 ,  D06M11/74 ,  D06M101/20

CPC classification number: G10K11/168 ,  B32B3/266 ,  B32B5/022 ,  B32B27/20 ,  B32B27/32 ,  D06M11/74 ,  B32B2262/0253 ,  B32B2262/0292 ,  B32B2264/108 ,  B32B2264/2031 ,  B32B2264/307 ,  B32B2307/102 ,  B32B2605/08 ,  B32B2605/18 ,  D06M2101/20

Abstract: Provided are acoustic articles having a porous layer (102,104,106) placed in contact with a heterogeneous filler comprising porous carbon and having an average surface area of from 0.1 m2/g to 10,000 m2/g. The acoustic articles can have a flow resistance of from 10 MKS Rayls to 5000 MKS Rayls. Optionally, the porous layer includes a non-woven fibrous layer or a perforated film having a plurality of apertures with an average narrowest diameter of from 30 micrometers to 5000 micrometers. The heterogeneous filler can enhance low frequency performance without significantly compromising high frequency performance, thickness or weight.

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：US12012680B2

公开(公告)日：2024-06-18

申请号：US16607258

申请日：2017-09-15

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Jinzhang You ,  Jonathan H. Alexander ,  Michael R. Berrigan ,  Akira Ito ,  Xiaojun Su ,  Qinrong Wu ,  Liyun Ren ,  Thomas P. Hanschen ,  Daniel J. Zillig ,  Sachin Talwar

IPC: D04H1/56 ,  D04H1/4291 ,  D04H3/14 ,  D04H3/16

CPC classification number: D04H1/56 ,  D04H1/4291 ,  D04H3/14 ,  D04H3/16 ,  B01D2239/0622 ,  B01D2239/1233 ,  B32B2262/0253 ,  B32B2262/0276 ,  B32B2307/718

Abstract: The provided articles, assemblies, and methods use a non-woven fibrous web (50) having one or more layers (60) that are densified in situ to provide a layer that is densified relative to one or more adjacent layers, collectively within a unitary non-woven construction. The non-woven web (50) can be made from fibers having a composition and/or structure that resist shrinkage induced by polymer crystallization when subjected to high temperatures. Advantageously, the provided non-woven webs (50) can be molded to form a three-dimensional shaped article that displays dimensional stability.

公开(公告)号：US11199235B2

公开(公告)日：2021-12-14

申请号：US15575152

申请日：2016-06-15

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Jonathan H. Alexander ,  Georg Eichhorn ,  Ronald W. Gerdes ,  Thomas P. Hanschen ,  Thomas Herdtie ,  Taewook Yoo

IPC: F16F9/30 ,  F16F1/373 ,  B32B3/26 ,  B32B7/12 ,  B32B3/30 ,  B32B15/085 ,  B32B15/20 ,  B60R13/08 ,  B60R13/02 ,  B62D25/20

Abstract: A multilayer damping material for damping a vibrating surface comprising: at least one constraining layer; at least one dissipating layer; and at least one kinetic spacer layer comprising multiple spacer elements. The kinetic spacer layer is arranged between the constraining layer and the vibrating surface, when used for damping the vibrating surface. Each spacer element has opposite ends. At least one end of each of the multiple spacer elements is embedded in, bonded to, in contact with, or in close proximity to the dissipating layer, such that energy is dissipated within the multilayer damping material, through movement of the at least one end of each of the multiple spacer elements.

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：US20210270337A1

公开(公告)日：2021-09-02

申请号：US17253980

申请日：2019-06-28

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： David Rudek ,  Georg Eichhorn ,  Anja C. Rohmann ,  Ronald W. Gerdes ,  Taewook Yoo ,  Thomas P. Hanschen ,  Thomas Herdtle ,  Seungkyu Lee ,  Kim-Tong Gan ,  Knut Schumacher ,  Jonathan H. Alexander

IPC: F16F1/36 ,  F16F1/373 ,  B32B5/18 ,  B32B5/02 ,  B32B3/30

Abstract: Multilayer damping material for damping a vibrating surface (10) including: at least one constraining layer (4); at least one dissipating layer (1, 3); at least one kinetic spacer layer (2) including multiple spacer elements (2b), the kinetic spacer layer being arranged between the constraining layer and the vibrating surface, when used for damping the vibrating surface, wherein each spacer element has opposite ends, at least one end of each of the multiple spacer elements is embedded in, bonded to, in contact with or in close proximity to the dissipating layer, such that energy is dissipated within the multilayer damping material, through movement of the at least one end of each of the multiple spacer elements; absorbing material as at least one additional layer (12) or within at least one of the above layers.

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：US20200071865A1

公开(公告)日：2020-03-05

申请号：US16467399

申请日：2017-12-29

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Liyun Ren ,  Pingfan Wu ,  Daniel J. Zillig ,  Sachin Talwar ,  Jonathan H. Alexander

IPC: D04H1/4326 ,  D04H1/56 ,  D04H1/50

Abstract: Dimensionally stable fire-resistant fibrous structures including fire-resistant melt-blown nonwoven fibers, and processes and apparatus for producing such dimensionally stable, fire-resistant nonwoven fibrous structures. The melt-blown fibers include poly(phenylene sulfide) in an amount sufficient for the nonwoven fibrous structures to pass one or more fire-resistance test selected from UL 94 V0, FAR 25.853 (a), and FAR 25.856 (a), without any halogenated flame-retardant additive in the nonwoven fibrous structure. The melt-blown fibers are subjected to a controlled in-flight heat treatment at a temperature below a melting temperature of the poly(phenylene sulfide) immediately upon exiting from at least one orifice of a melt-blowing die, in order to impart dimensional stability to the fibers. The nonwoven fibrous structures including the in-flight heat treated melt-blown fibers exhibit a Shrinkage less than a Shrinkage measured on an identically-prepared structure including only fibers not subjected to the controlled in-flight heat treatment operation, and generally less than 15%.

公开(公告)号：US20230112198A1

公开(公告)日：2023-04-13

申请号：US17958992

申请日：2022-10-03

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Taewook Yoo ,  Kim-Tong Gan ,  Anja C. Rohmann ,  Masato Kondo ,  Hirokazu Mizutani ,  Hyunjun Shin ,  Seungkyu Lee ,  Jonathan H. Alexander

IPC: G10K11/162 ,  G10K11/172

Abstract: Described herein are noise-resistant assemblies pursuant to various commercial and industrial applications. The noise-resistant assemblies can include duct assemblies, pool assemblies, motor assemblies, carpet flooring assemblies, and roofing assemblies. These assemblies incorporate an acoustic article containing a porous layer and a heterogeneous filler having a median particle size of from 1 micrometer to 1000 micrometers and a specific surface area of from 0.1 m2/g to 10,000 m2/g received in the porous layer.

公开(公告)号：US20210140678A1

公开(公告)日：2021-05-13

申请号：US16492393

申请日：2018-06-26

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Seungkyu Lee ,  Thomas P. Hanschen ,  Jonathan H. Alexander ,  Thomas Herdtle ,  Ronald W. Gerdes

IPC: F24F13/24 ,  F16L55/033 ,  F24F13/02

Abstract: Provided are conduits for air flow that are capable of reducing noise and related methods. The provided conduits include a first section that is tubular and substantially non-perforated and a second section with at least a portion having a multiplicity of microperforations that provide an average flow resistance of from 50 MKS Rayls to 8000 MKS Rayls therethrough. The second section is either (a) tubular and connected in series with the first section, with an outer surface of the second section being in fluid communication with an outer surface of the conduit, or (b) disposed within the first section.