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1.发明申请公开(公告)号：US20190338447A1
公开(公告)日：2019-11-07
申请号：US16514608
申请日：2019-07-17
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Daniel J. Zillig , Sachin Talwar , Randy L. Christiansen , Michael D. Romano , Eric M. Moore , Pamela A. Percha , Liming Song , Myles L. Brostrom , Michael D. Swan
Abstract: A process and apparatus for producing a dimensionally stable melt blown nonwoven fibrous web. The process includes forming a multiplicity of melt blown fibers by passing a molten stream including molecules of at least one thermoplastic semi-crystalline (co)polymer through at least one orifice of a melt-blowing die, subjecting at least a portion of the melt blown fibers to a controlled in-flight heat treatment operation at a temperature below a melting temperature of the at least one thermoplastic semi-crystalline (co)polymer immediately upon exiting from the at least one orifice, and collecting at least some of the melt blown fibers subjected to the controlled in-flight heat treatment operation on a collector to form a non-woven fibrous structure. The nonwoven fibrous structure exhibits 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：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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3.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：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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公开(公告)号：US12125464B2
公开(公告)日：2024-10-22
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: F24F13/24 , G10K11/16 , G10K11/168 , G11B33/08
CPC classification number: 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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Patent Agency Ranking
公开(公告)号：US20210292947A1
公开(公告)日：2021-09-23
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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公开(公告)号：US11105018B2
公开(公告)日：2021-08-31
申请号：US16514608
申请日：2019-07-17
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Daniel J. Zillig , Sachin Talwar , Randy L. Christiansen , Michael D. Romano , Eric M. Moore , Pamela A. Percha , Liming Song , Myles L. Brostrom , Michael D. Swan
Abstract: A process and apparatus for producing a dimensionally stable melt blown nonwoven fibrous web. The process includes forming a multiplicity of melt blown fibers by passing a molten stream including molecules of at least one thermoplastic semi-crystalline (co)polymer through at least one orifice of a melt-blowing die, subjecting at least a portion of the melt blown fibers to a controlled in-flight heat treatment operation at a temperature below a melting temperature of the at least one thermoplastic semi-crystalline (co)polymer immediately upon exiting from the at least one orifice, and collecting at least some of the melt blown fibers subjected to the controlled in-flight heat treatment operation on a collector to form a non-woven fibrous structure. The nonwoven fibrous structure exhibits 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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8.发明申请公开(公告)号：US20210095405A1
公开(公告)日：2021-04-01
申请号：US15733240
申请日：2018-12-14
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Liyun L. Ren , Pingfan Wu , Daniel J. Zillig , Sachin Talwar , Jonathan H. Alexander , Ta-Hua Yu , Moses M. David , James A. Phipps
Abstract: Dimensionally-stable fibrous structures including ceramic-coated melt-blown nonwoven fibers made of a flame-retarding polymer and processes for producing such 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, e.g. UL 94 V0, FAR 25.853 (a), FAR 25.856 (a), and CA Title 19, without any halogenated flame-retardant additive, and have a ceramic coating. 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 a nonwoven fibrous structure including only fibers not subjected to the controlled in-flight heat treatment operation, 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：US20220387653A1
公开(公告)日：2022-12-08
申请号：US17708475
申请日：2022-03-30
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Michael W. Kobe , Michael S. Wendland , Richard C. Webb , Michael E. Hamerly , Daniel J. O'Neal , Kelvin J. Witcher , Dawud H. Tan , Daniel J. Zillig
Abstract: The present disclosure provides an ethylene oxide sterilization sensor and method of use. The sensor includes: at least one thermal indicator component independently selected from an electronic thermal sensor, an irreversible temperature indicator, and a heat-shrinkable film; an acid-functional porous sorbent or an acid-functional nonwoven fibrous substrate in thermal contact with the at least one thermal indicator component; and an acid having a boiling point above 120° C. and a pKa of no greater than 2.5. The acid is impregnated in or covalently attached to the porous sorbent or is covalently attached to the nonwoven fibrous substrate. The sensor includes at least one of the electronic thermal sensor, the irreversible temperature indicator, or the acid-functional nonwoven fibrous substrate.
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