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公开(公告)号：US20240269494A1
公开(公告)日：2024-08-15
申请号：US18681792
申请日：2022-08-15
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Nicholas K. Lee , Liyun Ren , Tanya L. Beckwith , Gina M. Daveloose , Jeffrey G. Linert , Jacob T. Lusson , John D. Stelter , Jacob J. Thelen
CPC classification number: A62B23/02 , B01D39/163 , B01D2239/0435 , B01D2239/0627 , B01D2239/065
Abstract: Provided are face coverings that include a cover panel made from a cover panel material, a filter made from a filtration media adjacent the cover panel, and a retaining system for securing the face covering to a wearer's face. The face coverings can further include a gasket comprising gasket material connected to a perimeter of the cover panel and configured to contact to a wearer's face. The pressure drop across a combination of the cover panel material and the filtration media is from 45% to 75% of the pressure drop across the gasket material, enabling filtration of airborne contaminants allowing for reduced retaining tension and improved comfort to the wearer.
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公开(公告)号：US20250065253A1
公开(公告)日：2025-02-27
申请号：US18726282
申请日：2022-01-07
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： GuangMing Gong , Liyun Ren
IPC: B01D39/16 , A62B23/02 , D04H1/4309 , D04H1/4318 , D04H1/435 , D04H1/4382 , D04H1/728
Abstract: The present invention is an electrospun web including a carrier substrate and an electrostatically charged nanofiber. The electrospun web has a pressure drop of about 5 mmH2O or less, a percent penetration of about 50% or less, and a clarity of about 80% or more.
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公开(公告)号：US20210156060A1
公开(公告)日：2021-05-27
申请号：US17258484
申请日：2019-07-27
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Eumi Pyun , Liyun Ren , Pingfan Wu
IPC: D04H1/4291 , D06M15/263 , D06M11/71 , H01M10/658 , D04H1/593 , D04H1/587
Abstract: A scrim is described comprising a plurality of fibers and a coating disposed on the scrim wherein the coating comprises a binder and a flame retardant additive. The scrim has a basis weight less than or equal to 200 grams/m2 and passes the UL94-V0 flammability standard. The scrim may be incorporated into other articles and methods. Also described is a flame retardant coating composition.
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公开(公告)号：US20220366887A1
公开(公告)日：2022-11-17
申请号：US17633851
申请日：2020-08-28
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Ronald W. Gerdes , Catherine A. Leatherdale , Thomas Herdtle , Paul A. Nielsen , Timothy J. Rowell , Liyun Ren , Daniel J. Zillig , Sachin Talwar , Eumi Pyun , Jeffrey A. Chambers , Pingfan Wu
IPC: G10K11/168
Abstract: An assembly includes an enclosure including first and second regions spaced apart along a first direction, and a plurality of spaced apart acoustic baffles arranged along a second direction different from the first direction and disposed in the enclosure between the first and second regions. The plurality of spaced apart acoustic baffles includes adjacent first and second acoustic baffles. Each of the first and second acoustic baffles include an acoustically absorptive layer disposed on a sheet having a specific airflow resistance greater than 200 MKS Rayl. The first and second acoustic baffles define a channel therebetween. At least a portion of the channel extends along a longitudinal direction making an oblique angle with the first direction.
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5.发明申请公开(公告)号：US20200208314A1
公开(公告)日：2020-07-02
申请号：US16631443
申请日：2018-07-30
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Eugene G. Joseph , Saurabh Batra , Michael R. Berrigan , John D. Stelter , Jacob J. Thelen , Zackary J. Becker , Liyun Ren , Sachin Talwar , Michael D. Romano
IPC: D04H1/4291 , D01F1/10 , D01F6/04 , D01D5/088
Abstract: Nonwoven webs including one or more semi-continuous filaments made of a mixture including from about 50% w/w to about 99% w/w of at least one crystalline polyolefin (co)polymer, and from about 1% w/w to about 40% w/w of at least one hydrocarbon tackifier resin. The at least one semi-continuous filament exhibits molecular orientation, and at least one of the crystalline polyolefin (co)polymer or the nonwoven web exhibits a Heat of Fusion measured using Differential Scanning Calorimetry of greater than 50 Joules/g. A process for making the semi-continuous filaments and nonwoven webs is also disclosed.
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Patent Agency Ranking
6.发明申请公开(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%.
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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.
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公开(公告)号：US20220396903A1
公开(公告)日：2022-12-15
申请号：US17250645
申请日：2019-10-07
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Tien T. Wu , Pingfan Wu , Liyun Ren
Abstract: A nonwoven fibrous web and a method of making thereof. The nonwoven fibrous web includes greater than 0% but no greater than 30 wt % of a plurality of melt-blown fibers comprised of a crystalline (co)polymer; and at least 70 wt % of a plurality of randomly-oriented staple fibers, the plurality of randomly-oriented staple fibers including: at least 60 wt % of oxidized polyacrylonitrile fibers; and from 0 to 40 wt % of reinforcing fibers having an outer surface comprised of a (co)polymer with a melting temperature of from 100° C. to 350° C.; wherein the plurality of melt-blown fibers and the plurality of randomly-oriented staple fibers are bonded together to form a cohesive non-woven fibrous web.
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公开(公告)号：US20220136140A1
公开(公告)日：2022-05-05
申请号：US17434454
申请日：2020-02-26
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Kristy A. Jost , Liyun Ren , Rongzhi Huang , William J. Kopecky , James M. Jonza , Andrew J. Ouderkirk
Abstract: The present invention is a process for converting a multilayer film to a plurality of nano-ribbons. The process includes co-extruding a first film and a second film to form the multilayer film, slitting the multilayer film to form a plurality of multilayer ribbons, and separating the multilayer ribbons to form a plurality of nano-ribbons having substantially flat cross-sections.
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公开(公告)号：US12146248B2
公开(公告)日：2024-11-19
申请号：US17261661
申请日：2019-10-15
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Liyun Ren , Daniel J. Zillig , Sachin Talwar , Eumi Pyun , Jeffrey A. Chambers , Nurkan Turkdogru Gurun , Pingfan Wu , Tien T. Wu
Abstract: Provided are non-woven fibrous webs, methods and assemblies thereof. The non-woven fibrous web comprises a plurality of melt-blown fibers. The plurality of melt-blown fibers include a thermoplastic polymer blended with a phosphinate and/or polymeric phosphonate. The provided non-woven articles can afford a fine fiber diameter for enhanced acoustic insulation properties, dimensional stability, and superior flame-retardant properties when compared with conventional non-woven articles having similar fiber diameters.
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