JPH07504121A - スクリム挿入静電繊維フィルターウェブ - Google Patents
スクリム挿入静電繊維フィルターウェブInfo
- Publication number
- JPH07504121A JPH07504121A JP5514806A JP51480693A JPH07504121A JP H07504121 A JPH07504121 A JP H07504121A JP 5514806 A JP5514806 A JP 5514806A JP 51480693 A JP51480693 A JP 51480693A JP H07504121 A JPH07504121 A JP H07504121A
- Authority
- JP
- Japan
- Prior art keywords
- web
- filter
- scrim
- nonwoven filter
- fibers
- 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.)
- Granted
Links
- 239000000835 fiber Substances 0.000 title claims description 44
- 238000000034 method Methods 0.000 claims description 27
- -1 polypropylene Polymers 0.000 claims description 11
- 239000004743 Polypropylene Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 229920001155 polypropylene Polymers 0.000 claims description 8
- 229920001577 copolymer Polymers 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 229920000642 polymer Polymers 0.000 claims description 7
- 238000009960 carding Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims 5
- 239000004745 nonwoven fabric Substances 0.000 claims 2
- 230000002787 reinforcement Effects 0.000 claims 2
- 239000012528 membrane Substances 0.000 claims 1
- 238000004080 punching Methods 0.000 claims 1
- 230000007423 decrease Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000004049 embossing Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229920000412 polyarylene Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 108091006629 SLC13A2 Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004924 electrostatic deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000013538 functional additive Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004091 panning Methods 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/06—Filters making use of electricity or magnetism
-
- 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
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/498—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H13/00—Other non-woven fabrics
- D04H13/02—Production of non-woven fabrics by partial defibrillation of oriented thermoplastics films
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
- D04H3/04—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles
- D04H3/045—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments in rectilinear paths, e.g. crossing at right angles for net manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/04—Additives and treatments of the filtering material
- B01D2239/0435—Electret
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/0613—Woven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/0627—Spun-bonded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
- B01D2239/0654—Support layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
- B01D2239/0659—The layers being joined by needling
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Water Supply & Treatment (AREA)
- Filtering Materials (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.a)静電気を帯電させた誘電性繊維を提供する工程、b)その静電気を帯電 させた繊維を少なくとも一つの不織フィルターウェブ(10)に形成する工程、 c)上記少なくとも一つのフィルターウェブを補強スクリム(11)に重ねる工 程、そして d)上記の少なくとも一つのフィルターウェブ(10)と補強スクリム(11) とをニードルパンチ(5)してウェブ全体にわたって均一な特性を有するフィル ターウェブ(12)を製造する工程、 を包含し、c)およびd)の工程を特徴とするエレクトレット不織フィルターウ ェブの製造方法。 2.前記静電気を帯電させた繊維が静電気を帯電させたウェブをフィブリル化さ せることによって製造される請求項1記載の方法。 3.前記繊維の断面がほぼ長方形である請求項2記載の方法。 4.前記補強スクリム(11)が、二つの外側のフィルターウェブ層(10,1 0′)の間の内部層である請求項1記載の方法。 5.少なくとも一つの不織フィルターウェブ(10)がカーディングで形成され る請求項1記載の方法。 6.スクリム補強材(12)と重ねる前にカードされたフィルターウェブ(10 )をランダマイズする工程をさらに包含する請求項5記載の方法。 7.前記繊維がポリプロピレンのポリマーまたはコポリマー製の繊維であり、か つスクリム補強材がポリプロピレンのポリマーまたはコポリマー製のスパンポン ド不織布である請求項1記載の方法。 8.静電気を帯電させた誘電性繊維製の少なくとも一つの不織フィルターウェブ (10)を有する均一なエレクトレット不織フィルターであって、ウェブ(10 )が補強スクリム(11)にニードルパンチングによって接合されていることを 特徴とするフィルター。 9.前記誘電性繊維が、フィルム形成性ポリマー製の静電気を帯電させたフィル ムからフィブリル化される請求項8記載のエレクトレット不織フィルター。 10.前記繊維がポリプロピレンのポリマーまたはコポリマー製である請求項9 記載のエレクトレット不織フィルター。 11.前記補強スクリム(11)が、不織フィルターウェブの二つの外側層(1 0,10′)の間の中心層である請求項8記載のエレクトレット不織フィルター 。 12.前記不織フィルターウェブ(10)がカードされたウェブである請求項8 記載のエレクトレット不織フィルター。 13.前記不織フィルターウェブ(10)がランダマイズされている請求項12 記載のエレクトレット不織フィルター。 14.前記不織ウェブ材料の合計基本重量が120gm/m2より小さい請求項 8記載のエレクトレット不織フィルター。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US839,110 | 1992-02-20 | ||
US07/839,110 US5230800A (en) | 1992-02-20 | 1992-02-20 | Scrim inserted electrostatic fibrous filter web |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07504121A true JPH07504121A (ja) | 1995-05-11 |
JP2746750B2 JP2746750B2 (ja) | 1998-05-06 |
Family
ID=25278884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5514806A Expired - Fee Related JP2746750B2 (ja) | 1992-02-20 | 1992-12-03 | スクリム挿入静電繊維フィルターウェブ |
Country Status (14)
Country | Link |
---|---|
US (1) | US5230800A (ja) |
EP (1) | EP0626878B2 (ja) |
JP (1) | JP2746750B2 (ja) |
KR (1) | KR100218126B1 (ja) |
CN (2) | CN1043672C (ja) |
AU (1) | AU656837B2 (ja) |
CA (1) | CA2128707C (ja) |
DE (1) | DE69210047T3 (ja) |
ES (1) | ES2086213T5 (ja) |
HK (1) | HK1007974A1 (ja) |
MX (1) | MX9300484A (ja) |
MY (1) | MY108030A (ja) |
SG (1) | SG44583A1 (ja) |
WO (1) | WO1993016783A1 (ja) |
Families Citing this family (68)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9320208U1 (de) * | 1993-12-31 | 1994-03-31 | Kalthoff Luftfilter Und Filter | Mehrschichtiges Filtermaterial |
CA2138078A1 (en) * | 1994-01-10 | 1995-07-11 | William V. Balsimo | Reinforced particle-loaded fibrillated ptfe web |
US6207251B1 (en) | 1994-01-10 | 2001-03-27 | Minnesota Mining And Manufacturing Company | Reinforced particle-loaded fibrillated PTFE web |
US5647881A (en) * | 1995-04-20 | 1997-07-15 | Minnesota Mining And Manufacturing Company | Shock resistant high efficiency vacuum cleaner filter bag |
GB2300833B (en) * | 1995-05-18 | 1998-10-07 | Bwc Textiles Ltd | Reinforced fabrics |
NL1002295C2 (nl) * | 1996-02-09 | 1997-08-12 | Airflo Europ N V | Werkwijze voor het vervaardigen van filtermateriaal. |
US5792242A (en) * | 1996-02-26 | 1998-08-11 | Minnesota Mining And Manufacturing Co. | Electrostatic fibrous filter web |
US5898981A (en) * | 1996-04-30 | 1999-05-04 | Minnesota Mining & Manufacturing Company | Synthetic filter media and method for manufacturing same |
US6211100B1 (en) | 1996-04-30 | 2001-04-03 | Minnesota Mining And Manufacturing Company | Synthetic filter media |
US5772713A (en) * | 1996-05-30 | 1998-06-30 | Salinas; Irma C. | Adjustable filter assembly |
WO1999052619A1 (en) * | 1998-04-08 | 1999-10-21 | All-Felt Filtration, Llc | Enhanced electret needled filtration media composites |
US6171369B1 (en) | 1998-05-11 | 2001-01-09 | Airflo Europe, N.V. | Vacuum cleaner bag construction and method of operation |
US6110260A (en) * | 1998-07-14 | 2000-08-29 | 3M Innovative Properties Company | Filter having a change indicator |
US6036752A (en) * | 1998-07-28 | 2000-03-14 | 3M Innovative Properties Company | Pleated filter |
US6099608A (en) * | 1998-07-30 | 2000-08-08 | 3M Innovative Properties Company | Rotating filtration cartridge and blower for HVAC applications |
US6277176B1 (en) | 1998-07-30 | 2001-08-21 | 3M Innovative Properties Company | Moving filter device having filter elements with flow passages and method of filtering air |
US6099609A (en) * | 1998-07-30 | 2000-08-08 | 3M Innovative Properties Company | Moving sorbent filter device |
US6156086A (en) * | 1999-03-22 | 2000-12-05 | 3M Innovative Properties Company | Dual media vacuum filter bag |
DE19920983C5 (de) * | 1999-05-06 | 2004-11-18 | Fibermark Gessner Gmbh & Co. Ohg | Zwei- oder mehrlagiges Filtermedium für die Luftfiltration und daraus hergestelltes Filterelement |
US6372004B1 (en) | 1999-07-08 | 2002-04-16 | Airflo Europe N.V. | High efficiency depth filter and methods of forming the same |
US6521011B1 (en) | 1999-07-15 | 2003-02-18 | 3M Innovative Properties Company | Self-supporting pleated filter and method of making same |
GB9921534D0 (en) * | 1999-09-14 | 1999-11-17 | Intersurgical Ltd | Manufacture of electrostatic filtration media |
GB9924549D0 (en) * | 1999-10-19 | 1999-12-22 | Hepworth Minerals & Chemicals | Filter materials and methods for the production thereof |
US6437372B1 (en) | 2000-01-07 | 2002-08-20 | Agere Systems Guardian Corp. | Diffusion barrier spikes for III-V structures |
AU2001234463A1 (en) | 2000-01-14 | 2001-07-24 | Andrew Corporation | Repeaters for wireless communication systems |
US6348086B1 (en) * | 2000-02-16 | 2002-02-19 | 3M Innovative Properties Company | Combination blower wheel and filter cartridge system for HVAC applications |
JP2002070501A (ja) * | 2000-09-04 | 2002-03-08 | Honda Motor Co Ltd | 回転流体機械 |
ES2208481T3 (es) * | 2001-03-02 | 2004-06-16 | Airflo Europe N.V. | Filtro de material compuesto y procedimiento de fabricacion. |
DE10120223B4 (de) * | 2001-04-24 | 2005-08-25 | Carl Freudenberg Kg | Mehrlagiger Luftfilter und dessen Verwendung |
GB2376654B (en) * | 2001-05-18 | 2005-03-30 | P G Lawton | Moulding filter sheets |
US20040011204A1 (en) * | 2001-10-11 | 2004-01-22 | Hendrik Both | Electrostatic fibrous filter web and method of making same |
KR100438331B1 (ko) * | 2001-10-18 | 2004-07-01 | (주)크린앤사이언스 | 내연기관 유입공기 정화용 여재 및 그 제조방법 |
WO2003069234A1 (en) * | 2002-02-13 | 2003-08-21 | 3M Innovative Properties Company | Filter device, method of manufacturing the same and method of replacing a filter device |
US20050204714A1 (en) * | 2004-03-22 | 2005-09-22 | 3M Innovative Properties Company | Self-supporting pleated filter and method of making same |
ES2245875B1 (es) * | 2004-03-26 | 2006-11-16 | Joaquin Espuelas Peñalva | Proceso de fabricacion y filtro de tejido no tejido y/o de laminas o estructuras inyectadas filtrantes obtenidos por dicho proceso para la filtracion y eliminacion de la legionella pneumofila. |
US7896940B2 (en) | 2004-07-09 | 2011-03-01 | 3M Innovative Properties Company | Self-supporting pleated filter media |
US7156891B2 (en) * | 2004-09-10 | 2007-01-02 | Filtration Group Incorporated | Forced air system air filter |
US9120043B2 (en) * | 2006-05-30 | 2015-09-01 | 3M Innovative Properties Company | Filter sensor |
US8070862B2 (en) * | 2007-09-04 | 2011-12-06 | 3M Innovative Properties Company | Dust collection device for sanding tool |
WO2009086339A2 (en) * | 2007-12-27 | 2009-07-09 | 3M Innovative Properties Company | Dust collection device for sanding tool |
US20140367325A1 (en) * | 2008-06-13 | 2014-12-18 | Kyung-Ju Choi | Method for Multi-Stage Expansion and Stretching of Film and Filter |
US9012013B2 (en) * | 2008-12-18 | 2015-04-21 | 3M Innovative Properties Company | Expandable face mask with reinforcing netting |
US8382872B2 (en) | 2008-12-23 | 2013-02-26 | 3M Innovative Properties Company | Dust collection device for sanding tool |
WO2010096285A2 (en) * | 2009-02-20 | 2010-08-26 | 3M Innovative Properties Company | Antimicrobial electret web |
CA2665530C (en) * | 2009-04-28 | 2017-04-11 | Clarcor Air Filtration Products, Inc. | Panel filter |
CA2665541C (en) * | 2009-04-28 | 2017-04-11 | Clarcor Air Filtration Products, Inc. | Panel filter |
WO2012058483A1 (en) | 2010-10-28 | 2012-05-03 | Pacira Pharmaceuticals, Inc. | A sustained release formulation of a non-steroidal anti-inflammatory drug |
US9802187B2 (en) | 2011-06-30 | 2017-10-31 | 3M Innovative Properties Company | Non-woven electret fibrous webs and methods of making same |
US9072991B2 (en) * | 2012-04-24 | 2015-07-07 | Southern Felt Company, Inc. | Conductive filter media |
US9278301B2 (en) | 2013-08-16 | 2016-03-08 | 3M Innovative Properties Company | Nestable framed pleated air filter and method of making |
US9174159B2 (en) | 2013-08-16 | 2015-11-03 | 3M Innovative Properties Company | Framed pleated air filter with upstream bridging filaments |
KR101837641B1 (ko) | 2013-12-17 | 2018-03-12 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | 공기질 표시기 |
CN105195325B (zh) * | 2014-06-03 | 2018-06-19 | 中国人民大学 | 基于温度调控的铌酸锂热释电材料在吸附大气颗粒物中的应用 |
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NL181632C (nl) * | 1976-12-23 | 1987-10-01 | Minnesota Mining & Mfg | Electreetfilter en werkwijze voor het vervaardigen daarvan. |
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FR2480807A1 (fr) * | 1980-04-18 | 1981-10-23 | Seplast Sa | Procede de traitement superficiel d'une couche filtrante fibreuse, non tissee et tres aeree, formant electret et son application aux filtres et aux masques respiratoires notamment |
US4375718A (en) * | 1981-03-12 | 1983-03-08 | Surgikos, Inc. | Method of making fibrous electrets |
US4456684A (en) * | 1982-09-08 | 1984-06-26 | The United States Of America As Represented By The Secretary Of Agriculture | Method for screening bacteria and application thereof for field control of diseases caused by Gaeumannomyces graminis |
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US4623438A (en) * | 1983-11-08 | 1986-11-18 | Celanese Corporation | Electret making process using corona discharge |
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CN85108719A (zh) * | 1985-11-12 | 1987-05-20 | 东北工学院 | 矿井空气滤除氡子体的方法和装置 |
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) |
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-
1992
- 1992-02-20 US US07/839,110 patent/US5230800A/en not_active Expired - Lifetime
- 1992-12-03 SG SG1996003130A patent/SG44583A1/en unknown
- 1992-12-03 ES ES93900813T patent/ES2086213T5/es not_active Expired - Lifetime
- 1992-12-03 DE DE69210047T patent/DE69210047T3/de not_active Expired - Lifetime
- 1992-12-03 WO PCT/US1992/010416 patent/WO1993016783A1/en active IP Right Grant
- 1992-12-03 KR KR1019940702857A patent/KR100218126B1/ko not_active IP Right Cessation
- 1992-12-03 CA CA002128707A patent/CA2128707C/en not_active Expired - Fee Related
- 1992-12-03 EP EP93900813A patent/EP0626878B2/en not_active Expired - Lifetime
- 1992-12-03 JP JP5514806A patent/JP2746750B2/ja not_active Expired - Fee Related
- 1992-12-03 AU AU32354/93A patent/AU656837B2/en not_active Ceased
- 1992-12-21 MY MYPI92002355A patent/MY108030A/en unknown
-
1993
- 1993-01-28 MX MX9300484A patent/MX9300484A/es not_active IP Right Cessation
- 1993-02-19 CN CN93101221A patent/CN1043672C/zh not_active Expired - Fee Related
-
1996
- 1996-05-29 CN CN96107566A patent/CN1076976C/zh not_active Expired - Fee Related
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1998
- 1998-06-27 HK HK98107201A patent/HK1007974A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR950700109A (ko) | 1995-01-16 |
DE69210047D1 (de) | 1996-05-23 |
EP0626878B1 (en) | 1996-04-17 |
ES2086213T3 (es) | 1996-06-16 |
US5230800A (en) | 1993-07-27 |
EP0626878B2 (en) | 2003-06-25 |
CN1076976C (zh) | 2002-01-02 |
CN1043672C (zh) | 1999-06-16 |
DE69210047T2 (de) | 1997-01-23 |
AU3235493A (en) | 1993-09-13 |
ES2086213T5 (es) | 2004-03-16 |
CN1153678A (zh) | 1997-07-09 |
HK1007974A1 (en) | 1999-04-30 |
EP0626878A1 (en) | 1994-12-07 |
KR100218126B1 (ko) | 1999-09-01 |
SG44583A1 (en) | 1997-12-19 |
DE69210047T3 (de) | 2004-01-29 |
CA2128707C (en) | 2003-04-29 |
JP2746750B2 (ja) | 1998-05-06 |
CA2128707A1 (en) | 1993-09-02 |
WO1993016783A1 (en) | 1993-09-02 |
MX9300484A (es) | 1993-09-01 |
CN1075514A (zh) | 1993-08-25 |
AU656837B2 (en) | 1995-02-16 |
MY108030A (en) | 1996-07-30 |
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