CA2381060A1 - Oily-mist resistant filter that has nondecreasing efficiency - Google Patents
Oily-mist resistant filter that has nondecreasing efficiency Download PDFInfo
- Publication number
- CA2381060A1 CA2381060A1 CA002381060A CA2381060A CA2381060A1 CA 2381060 A1 CA2381060 A1 CA 2381060A1 CA 002381060 A CA002381060 A CA 002381060A CA 2381060 A CA2381060 A CA 2381060A CA 2381060 A1 CA2381060 A1 CA 2381060A1
- Authority
- CA
- Canada
- Prior art keywords
- filter
- electret
- filter layer
- electret filter
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000003595 mist Substances 0.000 title claims description 17
- 239000000443 aerosol Substances 0.000 claims abstract description 26
- 230000003247 decreasing effect Effects 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 69
- 239000000835 fiber Substances 0.000 claims description 53
- 238000012360 testing method Methods 0.000 claims description 52
- 230000035515 penetration Effects 0.000 claims description 51
- 239000000654 additive Substances 0.000 claims description 34
- 238000011068 loading method Methods 0.000 claims description 30
- 229920000642 polymer Polymers 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 25
- 230000000996 additive effect Effects 0.000 claims description 23
- -1 polypropylene Polymers 0.000 claims description 19
- 238000010998 test method Methods 0.000 claims description 17
- 238000002844 melting Methods 0.000 claims description 16
- 230000008018 melting Effects 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 15
- 239000004743 Polypropylene Substances 0.000 claims description 14
- 229920001155 polypropylene Polymers 0.000 claims description 14
- 230000001965 increasing effect Effects 0.000 claims description 10
- 230000001747 exhibiting effect Effects 0.000 claims description 9
- 238000001228 spectrum Methods 0.000 claims description 8
- 229920001410 Microfiber Polymers 0.000 claims description 5
- 239000003658 microfiber Substances 0.000 claims description 5
- 239000004793 Polystyrene Substances 0.000 claims description 2
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 2
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 239000008263 liquid aerosol Substances 0.000 claims 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims 1
- 229910052731 fluorine Inorganic materials 0.000 claims 1
- 239000011737 fluorine Substances 0.000 claims 1
- 239000008275 solid aerosol Substances 0.000 claims 1
- 230000002829 reductive effect Effects 0.000 abstract description 8
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 61
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 61
- 238000010276 construction Methods 0.000 description 26
- 229910001868 water Inorganic materials 0.000 description 25
- 230000000052 comparative effect Effects 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- 238000001914 filtration Methods 0.000 description 19
- 238000010791 quenching Methods 0.000 description 13
- 230000000171 quenching effect Effects 0.000 description 13
- 239000000203 mixture Substances 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 9
- 238000000137 annealing Methods 0.000 description 8
- 239000000356 contaminant Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000007493 shaping process Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 238000011144 upstream manufacturing Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000012809 cooling fluid Substances 0.000 description 4
- 238000000113 differential scanning calorimetry Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- 238000007600 charging Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000011236 particulate material Substances 0.000 description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- IZXIZTKNFFYFOF-UHFFFAOYSA-N 2-Oxazolidone Chemical class O=C1NCCO1 IZXIZTKNFFYFOF-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000012768 molten material Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000011045 prefiltration Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002594 sorbent Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007786 electrostatic charging Methods 0.000 description 1
- 230000005686 electrostatic field Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000003682 fluorination reaction Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical group [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- AQYSYJUIMQTRMV-UHFFFAOYSA-N hypofluorous acid Chemical class FO AQYSYJUIMQTRMV-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical class CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 150000004885 piperazines Chemical class 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 229920006126 semicrystalline polymer Polymers 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000002076 thermal analysis method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2262—Coating or impregnation is oil repellent but not oil or stain release
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2262—Coating or impregnation is oil repellent but not oil or stain release
- Y10T442/227—Fluorocarbon containing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/68—Melt-blown nonwoven fabric
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
- Electrostatic Separation (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Laminated Bodies (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/377,262 US6627563B1 (en) | 1999-08-19 | 1999-08-19 | Oily-mist resistant filter that has nondecreasing efficiency |
| US09/377,262 | 1999-08-19 | ||
| PCT/US2000/019432 WO2001014042A1 (en) | 1999-08-19 | 2000-07-17 | Oily-mist resistant filter that has nondecreasing efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2381060A1 true CA2381060A1 (en) | 2001-03-01 |
Family
ID=23488417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002381060A Abandoned CA2381060A1 (en) | 1999-08-19 | 2000-07-17 | Oily-mist resistant filter that has nondecreasing efficiency |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US6627563B1 (enExample) |
| EP (1) | EP1207953B1 (enExample) |
| JP (1) | JP4584516B2 (enExample) |
| KR (1) | KR100697161B1 (enExample) |
| CN (1) | CN1311889C (enExample) |
| AR (1) | AR025305A1 (enExample) |
| AT (1) | ATE250451T1 (enExample) |
| AU (1) | AU755433B2 (enExample) |
| BR (1) | BR0013360A (enExample) |
| CA (1) | CA2381060A1 (enExample) |
| DE (1) | DE60005535T2 (enExample) |
| HK (1) | HK1047555B (enExample) |
| MX (1) | MXPA02001659A (enExample) |
| NO (1) | NO20020769L (enExample) |
| PL (1) | PL198520B1 (enExample) |
| TW (1) | TW510814B (enExample) |
| WO (1) | WO2001014042A1 (enExample) |
Families Citing this family (44)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8091551B2 (en) * | 2002-09-16 | 2012-01-10 | Triomed Innovations Corp. | Facemask with filtering closure |
| WO2005102101A1 (ja) * | 2004-04-23 | 2005-11-03 | Matsushita Electric Works, Ltd. | 静電霧化器を備えた加熱送風装置 |
| US7320722B2 (en) * | 2004-10-29 | 2008-01-22 | 3M Innovative Properties Company | Respiratory protection device that has rapid threaded clean air source attachment |
| US7419526B2 (en) * | 2005-03-03 | 2008-09-02 | 3M Innovative Properties Company | Conformal filter cartridges and methods |
| EP1888201A2 (en) * | 2005-03-07 | 2008-02-20 | 3M Innovative Properties Company | Vehicle passenger compartment air filter devices |
| WO2007047263A1 (en) * | 2005-10-19 | 2007-04-26 | 3M Innovative Properties Company | Multilayer articles having acoustical absorbance properties and methods of making and using the same |
| FI119280B (fi) | 2006-05-18 | 2008-09-30 | Valtion Teknillinen | Suodatin ja uudet menetelmät |
| JP5194259B2 (ja) * | 2006-07-07 | 2013-05-08 | ティーイーエル エフエスアイ，インコーポレイティド | 液体エーロゾル式パーティクル除去方法 |
| US8438867B2 (en) * | 2006-08-25 | 2013-05-14 | David Colwell | Personal or spot area environmental management systems and apparatuses |
| US7956497B2 (en) * | 2006-09-29 | 2011-06-07 | Sanyo Electric Co., Ltd. | Electret device and electrostatic induction conversion apparatus comprising the same |
| US8257459B2 (en) | 2007-02-28 | 2012-09-04 | Hollingsworth & Vose Company | Waved filter media and elements |
| EP2125158B1 (en) | 2007-02-28 | 2014-01-15 | Hollingsworth & Vose Company | Waved filter media and elements |
| US8202340B2 (en) * | 2007-02-28 | 2012-06-19 | Hollingsworth & Vose Company | Waved filter media and elements |
| BRPI0721783B1 (pt) * | 2007-07-26 | 2018-05-22 | 3M Innovative Properties Company | "meio multicamada carregado e respirador" |
| CA2747782A1 (en) * | 2008-12-22 | 2010-07-01 | 3M Innovative Properties Company | Compact multigas filter |
| US20100252047A1 (en) * | 2009-04-03 | 2010-10-07 | Kirk Seth M | Remote fluorination of fibrous filter webs |
| JP5475541B2 (ja) * | 2010-05-07 | 2014-04-16 | 日本バイリーン株式会社 | 帯電フィルタ及びマスク |
| WO2012025451A1 (en) | 2010-08-23 | 2012-03-01 | Fiberweb Corovin Gmbh | Nonwoven web and fibers with electret properties, manufacturing processes thereof and their use |
| MX339180B (es) * | 2010-11-08 | 2016-05-16 | American Air Filter Co | Filtro de politetrafluoroetileno expandido (eptfe) para uso farmaceutico aseptico y metodo de uso. |
| US9266068B2 (en) | 2010-11-08 | 2016-02-23 | American Air Filter Company, Inc. | Aerosol generator for EPTFE filter testing and method of use |
| EP2739362A2 (en) | 2011-08-01 | 2014-06-11 | 3M Innovative Properties Company | Respiratory assembly including latching mechanism |
| US9700743B2 (en) | 2012-07-31 | 2017-07-11 | 3M Innovative Properties Company | Respiratory assembly including latching mechanism |
| US9510626B2 (en) | 2013-02-01 | 2016-12-06 | 3M Innovative Properties Company | Sleeve-fit respirator cartridge |
| CN106165040B (zh) * | 2014-04-04 | 2019-01-22 | 东洋纺株式会社 | 驻极体 |
| US10441909B2 (en) | 2014-06-25 | 2019-10-15 | Hollingsworth & Vose Company | Filter media including oriented fibers |
| US10343095B2 (en) | 2014-12-19 | 2019-07-09 | Hollingsworth & Vose Company | Filter media comprising a pre-filter layer |
| US10561972B2 (en) | 2015-09-18 | 2020-02-18 | Hollingsworth & Vose Company | Filter media including a waved filtration layer |
| US10449474B2 (en) | 2015-09-18 | 2019-10-22 | Hollingsworth & Vose Company | Filter media including a waved filtration layer |
| US10940415B2 (en) * | 2015-10-02 | 2021-03-09 | Toyobo Co., Ltd. | Electret and electret filter |
| EP3419736A4 (en) * | 2016-02-26 | 2019-10-23 | 3M Innovative Properties Company | AIR CONDITIONING FILTER AND METHOD OF MANUFACTURING THEREOF |
| US12420221B2 (en) | 2016-07-01 | 2025-09-23 | Hollingsworth & Vose Company | Multi-layered electret-containing filtration media |
| US10814261B2 (en) | 2017-02-21 | 2020-10-27 | Hollingsworth & Vose Company | Electret-containing filter media |
| US11077394B2 (en) | 2017-02-21 | 2021-08-03 | Hollingsworth & Vose Company | Electret-containing filter media |
| KR200484737Y1 (ko) * | 2017-05-26 | 2017-10-18 | 이시영 | 오염공기 정화용 집진 필터 |
| TWI672346B (zh) * | 2017-11-30 | 2019-09-21 | 財團法人紡織產業綜合研究所 | 濾材 |
| CN108635966A (zh) * | 2018-04-24 | 2018-10-12 | 华中科技大学 | 一种纳米纤维薄膜过滤材料的制备方法及其产品 |
| JP7340037B2 (ja) | 2019-05-01 | 2023-09-06 | アセンド・パフォーマンス・マテリアルズ・オペレーションズ・リミテッド・ライアビリティ・カンパニー | ポリアミドナノファイバー層を含むろ過媒体 |
| US20220323890A1 (en) * | 2019-06-28 | 2022-10-13 | 3M Innovative Properties Company | Filter assembly, prefilter assembly, and respirator including the same |
| CN111330355B (zh) * | 2020-02-28 | 2022-06-14 | 厦门理工学院 | 一种驻极纳米纤维高效过滤材料及其制备方法 |
| US12208183B2 (en) | 2020-03-13 | 2025-01-28 | Julian HENLEY | Electro-ionic devices for improved protection from airborne biopathogens |
| US20240001375A1 (en) | 2020-03-13 | 2024-01-04 | Julian HENLEY | Electro-ionic mask devices for improved protection from airborne biopathogens |
| US20210353977A1 (en) * | 2020-05-13 | 2021-11-18 | D. Wheatley Enterprises, Inc. | Integrated respiratory and eye protective system |
| CN115768543A (zh) * | 2020-07-08 | 2023-03-07 | 3M创新有限公司 | 包括纺粘预过滤器的褶皱型过滤组件 |
| CN117180853B (zh) * | 2023-09-19 | 2024-05-24 | 佛山市芯耀环保科技有限公司 | 一种油雾吸附复合材料及其制备方法和应用 |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL160303C (nl) | 1974-03-25 | 1979-10-15 | Verto Nv | Werkwijze voor het vervaardigen van een vezelfilter. |
| CA1073648A (en) | 1976-08-02 | 1980-03-18 | Edward R. Hauser | Web of blended microfibers and crimped bulking fibers |
| US4375718A (en) | 1981-03-12 | 1983-03-08 | Surgikos, Inc. | Method of making fibrous electrets |
| WO1984003193A1 (en) | 1983-02-04 | 1984-08-16 | Minnesota Mining & Mfg | Method and apparatus for manufacturing an electret filter medium |
| JPS60168511A (ja) | 1984-02-10 | 1985-09-02 | Japan Vilene Co Ltd | エレクトレツトフイルタの製造方法 |
| US4536440A (en) | 1984-03-27 | 1985-08-20 | Minnesota Mining And Manufacturing Company | Molded fibrous filtration products |
| GB8612070D0 (en) | 1986-05-19 | 1986-06-25 | Brown R C | Blended-fibre filter material |
| US5025052A (en) | 1986-09-12 | 1991-06-18 | Minnesota Mining And Manufacturing Company | Fluorochemical oxazolidinones |
| US4874399A (en) * | 1988-01-25 | 1989-10-17 | Minnesota Mining And Manufacturing Company | Electret filter made of fibers containing polypropylene and poly(4-methyl-1-pentene) |
| JP2574670Y2 (ja) * | 1990-06-13 | 1998-06-18 | 日本バイリーン株式会社 | エアフィルター |
| US5401446A (en) | 1992-10-09 | 1995-03-28 | The University Of Tennessee Research Corporation | Method and apparatus for the electrostatic charging of a web or film |
| AU669420B2 (en) * | 1993-03-26 | 1996-06-06 | Minnesota Mining And Manufacturing Company | Oily mist resistant electret filter media |
| RU2130521C1 (ru) * | 1993-08-17 | 1999-05-20 | Миннесота Майнинг Энд Мэнюфекчуринг Компани | Способ электризации нетканого полотна, электретная фильтрующая среда, упругая фильтрующая маска и респираторная маска в сборе |
| CN2206142Y (zh) * | 1994-10-19 | 1995-08-30 | 杨天寿 | 精滤器 |
| US5645627A (en) * | 1995-02-28 | 1997-07-08 | Hollingsworth & Vose Company | Charge stabilized electret filter media |
| US5908598A (en) | 1995-08-14 | 1999-06-01 | Minnesota Mining And Manufacturing Company | Fibrous webs having enhanced electret properties |
| US5817584A (en) * | 1995-12-22 | 1998-10-06 | Kimberly-Clark Worldwide, Inc. | High efficiency breathing mask fabrics |
| JP3566477B2 (ja) * | 1996-12-26 | 2004-09-15 | 興研株式会社 | 静電フィルター |
| US6238466B1 (en) | 1997-10-01 | 2001-05-29 | 3M Innovative Properties Company | Electret articles and filters with increased oily mist resistance |
-
1999
- 1999-08-19 US US09/377,262 patent/US6627563B1/en not_active Expired - Lifetime
-
2000
- 2000-07-17 AT AT00950395T patent/ATE250451T1/de not_active IP Right Cessation
- 2000-07-17 KR KR1020027002097A patent/KR100697161B1/ko not_active Expired - Fee Related
- 2000-07-17 DE DE60005535T patent/DE60005535T2/de not_active Expired - Fee Related
- 2000-07-17 JP JP2001518172A patent/JP4584516B2/ja not_active Expired - Fee Related
- 2000-07-17 AU AU63506/00A patent/AU755433B2/en not_active Ceased
- 2000-07-17 PL PL353456A patent/PL198520B1/pl not_active IP Right Cessation
- 2000-07-17 HK HK02107583.6A patent/HK1047555B/en not_active IP Right Cessation
- 2000-07-17 EP EP00950395A patent/EP1207953B1/en not_active Expired - Lifetime
- 2000-07-17 BR BR0013360-4A patent/BR0013360A/pt not_active IP Right Cessation
- 2000-07-17 CA CA002381060A patent/CA2381060A1/en not_active Abandoned
- 2000-07-17 WO PCT/US2000/019432 patent/WO2001014042A1/en not_active Ceased
- 2000-07-17 CN CNB008117993A patent/CN1311889C/zh not_active Expired - Fee Related
- 2000-07-17 MX MXPA02001659A patent/MXPA02001659A/es active IP Right Grant
- 2000-08-07 TW TW089115865A patent/TW510814B/zh active
- 2000-08-17 AR ARP000104250A patent/AR025305A1/es active IP Right Grant
-
2002
- 2002-02-15 NO NO20020769A patent/NO20020769L/no not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| HK1047555B (en) | 2004-10-15 |
| NO20020769L (no) | 2002-04-19 |
| KR100697161B1 (ko) | 2007-03-22 |
| AR025305A1 (es) | 2002-11-20 |
| AU755433B2 (en) | 2002-12-12 |
| WO2001014042A1 (en) | 2001-03-01 |
| US6627563B1 (en) | 2003-09-30 |
| MXPA02001659A (es) | 2002-10-23 |
| JP4584516B2 (ja) | 2010-11-24 |
| TW510814B (en) | 2002-11-21 |
| CN1311889C (zh) | 2007-04-25 |
| PL353456A1 (en) | 2003-11-17 |
| JP2003524519A (ja) | 2003-08-19 |
| HK1047555A1 (en) | 2003-02-28 |
| ATE250451T1 (de) | 2003-10-15 |
| EP1207953B1 (en) | 2003-09-24 |
| NO20020769D0 (no) | 2002-02-15 |
| KR20020022814A (ko) | 2002-03-27 |
| DE60005535D1 (de) | 2003-10-30 |
| DE60005535T2 (de) | 2004-06-24 |
| PL198520B1 (pl) | 2008-06-30 |
| CN1370091A (zh) | 2002-09-18 |
| BR0013360A (pt) | 2002-04-30 |
| EP1207953A1 (en) | 2002-05-29 |
| AU6350600A (en) | 2001-03-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |