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1.发明申请
公开(公告)号：WO2019025943A3
公开(公告)日：2019-02-07
申请号：PCT/IB2018/055686
申请日：2018-07-30
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： JOSEPH, Eugene G. , BATRA, Saurabh , BERRIGAN, Michael R. , STELTER, John D. , THELEN, Jacob J. , BECKER, Zackary J. , REN, Liyun , TALWAR, Sachin , ROMANO, Michael D.
IPC: D04H1/4291 , 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：WO2023017498A1
公开(公告)日：2023-02-16
申请号：PCT/IB2022/057636
申请日：2022-08-15
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： LEE, Nicholas K. , REN, Liyun , BECKWITH, Tanya L. , DAVELOOSE, Gina M. , LINERT, Jeffrey G. , LUSSON, Jacob T. , STELTER, John D. , THELEN, Jacob J.
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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3.发明申请
公开(公告)号：WO2020026062A1
公开(公告)日：2020-02-06
申请号：PCT/IB2019/056213
申请日：2019-07-19
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： ZHANG, Zhiqun , WILLIS, Edward Keith , THELEN, Jacob J. , JOHNSON, Daniel E. , GERHARDT, Bryan L. , BERRIGAN, Michael R.
Abstract: A relofted, spunbonded nonwoven web exhibiting a solidity of from less than 8.0 %, to at least 3.0 %, and exhibiting a Quality Factor of at least 0.30. Methods of making a relofted web; and, methods of using a relofted web as an air-filtration web, e.g. as a filter media or a layer thereof.
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4.发明申请
公开(公告)号：WO2019025943A2
公开(公告)日：2019-02-07
申请号：PCT/IB2018/055686
申请日：2018-07-30
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： JOSEPH, Eugene G. , BATRA, Saurabh , BERRIGAN, Michael R. , STELTER, John D. , THELEN, Jacob J. , BECKER, Zackary J. , REN, Liyun , TALWAR, Sachin , ROMANO, Michael D.
IPC: D04H1/4291 , 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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