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1.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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公开(公告)号：US20220096977A1
公开(公告)日：2022-03-31
申请号：US17422560
申请日：2020-01-17
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Zhiqun Zhang , Michael R. Berrigan , Ignatius A. Kadoma , Bryan L. Gerhardt , Liming Song , John D. Stelter , Zackary J. Becker
IPC: B01D39/16 , B01D46/10 , B01D46/52 , B32B5/02 , B32B5/26 , B32B5/08 , D04H1/541 , D01F8/14 , D04H3/011 , D04H3/16 , D01F1/10 , F24F8/108
Abstract: The present disclosure relates to multi-layer composite articles including at least two nonwoven web layers. Each or the layers may be a spunbonded web, and each may include biodegradable materials. The multi-layered composites of the present disclosure are particularly well suited for air filtration, as they can combine a high dust holding capacity with sufficient strength, dimensional stability, and a relatively low pressure drop.
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公开(公告)号：US10273612B2
公开(公告)日：2019-04-30
申请号：US15506213
申请日：2015-08-25
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Liming Song , Sachin Talwar , John D. Stelter , John M. Sebastian , Nathan E. Schultz , Eric M. Moore , Fuming B. Li , Andrew R. Fox , Michael R. Berrigan , Zackary J. Becker
Abstract: Spunbonded electret webs comprising polylactic acid fibers, in which at least some of the polylactic acid fibers are meltspun, drawn, charged fibers that include charging additive; and, methods of making such fibers and webs.
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公开(公告)号：US12109520B2
公开(公告)日：2024-10-08
申请号：US17422560
申请日：2020-01-17
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Zhiqun Zhang , Michael R. Berrigan , Ignatius A. Kadoma , Bryan L. Gerhardt , Liming Song , John D. Stelter , Zackary J. Becker
IPC: B01D46/00 , B01D39/16 , B01D46/10 , B01D46/52 , B32B5/02 , B32B5/08 , B32B5/26 , D01F1/10 , D01F8/14 , D04H1/435 , D04H1/541 , D04H3/011 , D04H3/16 , F24F8/108
CPC classification number: B01D39/163 , B01D46/10 , B01D46/521 , B32B5/022 , B32B5/08 , B32B5/267 , D01F1/10 , D01F8/14 , D04H1/5412 , D04H3/011 , D04H3/16 , F24F8/108 , B01D2239/0233 , B01D2239/0266 , B01D2239/0618 , B01D2239/0627 , B01D2239/065 , B01D2239/10 , B01D2239/1291 , B32B2250/02 , B32B2250/20 , B32B2262/0276 , B32B2262/124 , B32B2307/7163 , B32B2307/724 , B32B2307/734 , D10B2331/041 , D10B2401/041 , D10B2401/12 , D10B2505/04
Abstract: The present disclosure relates to multi-layer composite articles including at least two nonwoven web layers. Each or the layers may be a spunbonded web, and each may include biodegradable materials. The multi-layered composites of the present disclosure are particularly well suited for air filtration, as they can combine a high dust holding capacity with sufficient strength, dimensional stability, and a relatively low pressure drop.
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Patent Agency Ranking
公开(公告)号：US20220372666A1
公开(公告)日：2022-11-24
申请号：US17621994
申请日：2020-06-24
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Nathan E. Schultz , Daniel C. Duan , Seth M. Kirk , Michael R. Berrigan , Zackary J. Becker , Fuming B. Li , John M. Sebastian
IPC: D01F8/06 , D01F8/14 , D01F8/10 , D01F1/10 , B01D39/16 , D01D5/34 , D04H1/4382 , D04H3/007 , D04H3/011 , D04H3/018 , D04H1/435 , D04H1/4291 , A62B23/02
Abstract: A thermoplastic core-sheath fiber comprises: a polymer fiber core having a coextensive sheath layer disposed thereon, and an electrostatic charge enhancing additive. The sheath layer may comprise poly(4-methyl-1-pentene) and the fiber core and the sheath layer have different compositions. At least one of the fiber core or the sheath layer comprises an electret charge. A nonwoven fibrous web comprising the core-sheath fibers and a respirator including the nonwoven fibrous web are also disclosed.
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6.发明申请MELT-SPINNING PROCESS, MELT-SPUN NONWOVEN FIBROUS WEBS AND RELATED FILTRATION MEDIA 审中-公开熔融纺丝工艺，熔融纺丝非织造纤维织物和相关过滤介质公开(公告)号：US20160206984A1
公开(公告)日：2016-07-21
申请号：US14914675
申请日：2014-09-02
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Michael R. Berrigan , Zackary J. Becker , John D. Stelter , Francis E. Porbeni , Liming Song , Andrew R. Fox
CPC classification number: B01D39/163 , B01D29/012 , B01D29/031 , B01D39/1623 , B01D2239/0622 , B01D2239/065 , D04H3/02 , D04H3/03 , D04H3/14
Abstract: High loft nonwoven webs including a population of substantially continuous mono-component melt-spun filaments, wherein the nonwoven web exhibits a Solidity of less than eight percent with a weight normalized cross direction (CD) tensile greater than 10 Newtons per 100 grams per square meter of web weight (10 N/100 gsm), and wherein the nonwoven web is substantially free of gap-formed fibers, crimped fibers, staple fibers, and bi-component fibers. High loft spun-bond nonwoven webs can be advantageously used in filtration articles. Methods of making high loft spun-bond nonwoven webs, and filtration articles including high loft spun-bond webs made according to the methods, are also disclosed.
Abstract translation: 包括基本上连续的单组分熔纺丝的群体的高蓬松非织造纤维网，其中非织造纤维网的重量标准化横向（CD）拉伸强度大于10牛顿/ 100克/平方米，其粘度小于8％ 的纤维网重量（10N / 100gsm），并且其中非织造纤维网基本上没有间隙形成的纤维，卷曲纤维，短纤维和双组分纤维。 高折叠纺粘非织造纤维网可有利地用于过滤制品中。 还公开了制造高倾斜纺粘非织造网的方法，以及根据该方法制造的包括高纬度纺粘纤维网的过滤制品。
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公开(公告)号：US20230390678A1
公开(公告)日：2023-12-07
申请号：US18249989
申请日：2021-11-01
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Nathan E. Schultz , Zackary J. Becker , Daniel C. Duan , Himanshu Jasuja , Seth M. Kirk , Fuming B. Li , John M. Sebastian , Georgiy Teverovskiy
IPC: B01D39/16 , D01F8/06 , D01F8/16 , D04H1/4382 , D04H3/007
CPC classification number: B01D39/1623 , D01F8/06 , D01F8/16 , D04H1/43828 , D04H3/007 , A62B23/02
Abstract: Described herein is a thermoplastic core-sheath fiber. The thermoplastic core-sheath fiber comprises a core having a coextensive sheath layer disposed thereon, wherein the core comprises a first polymeric resin and an electrostatic charge enhancing additive, and the sheath layer comprising a second polymeric resin, with the proviso that if the second polymeric resin comprises poly(4-methyl-1-pentene), then the second polymeric resin does not comprise 100 wt % of poly(4-methyl-1-pentene). These thermoplastic core-sheath fibers can be used in filtering applications.
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公开(公告)号：US20220323890A1
公开(公告)日：2022-10-13
申请号：US17622045
申请日：2020-06-12
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Nathan E. Schultz , Daniel C. Duan , Seth M. Kirk , Michael R. Berrigan , Zackary J. Becker , Fuming B. Li , John M. Sebastian
Abstract: A filter assembly comprises an air filter medium and a prefilter medium. The prefilter medium comprises a second nonwoven fibrous web comprising poly(4-methylpentene) and an electrostatic charging additive and has a second electret charge. The filter assembly is configured such that air passing through the prefilter is directed through the air filter medium. A respirator includes the filter assembly. A prefilter assembly comprises a third nonwoven fibrous web retained by a prefilter frame. The third nonwoven fibrous web comprises: core-sheath fiber comprising a fiber core having a poly(4-methylpentene) sheath layer disposed thereon; and an electrostatic charging additive, wherein the electrostatic charging additive is contained in at least one of the fiber core or the sheath layer. The third nonwoven fibrous web has a third electret charge.
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公开(公告)号：US20170241054A1
公开(公告)日：2017-08-24
申请号：US15506213
申请日：2015-08-25
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Liming Song , Sachin Talwar , John D. Stelter , John M. Sebastian , Nathan E. Schultz , Eric M. Moore , Fuming B. Li , Andrew R. Fox , Michael R. Berrigan , Zackary J. Becker
CPC classification number: D04H3/11 , B01D39/163 , B01D46/0032 , B01D46/521 , B01D2239/0435 , B01D2239/10 , D01D5/16 , D04H3/011 , D04H3/14 , D10B2505/04
Abstract: Spunbonded electret webs comprising polylactic acid fibers, in which at least some of the polylactic acid fibers are meltspun, drawn, charged fibers that include charging additive; and, methods of making such fibers and webs.
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