CA2004048A1 - Nonwoven filter material - Google Patents
Nonwoven filter materialInfo
- Publication number
- CA2004048A1 CA2004048A1 CA2004048A CA2004048A CA2004048A1 CA 2004048 A1 CA2004048 A1 CA 2004048A1 CA 2004048 A CA2004048 A CA 2004048A CA 2004048 A CA2004048 A CA 2004048A CA 2004048 A1 CA2004048 A1 CA 2004048A1
- Authority
- CA
- Canada
- Prior art keywords
- disposable
- bags
- paper filter
- filter material
- improved
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
- A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/28—Plant or installations without electricity supply, e.g. using electrets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
-
- 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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
-
- 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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/559—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 by welding together the fibres, e.g. by partially melting or dissolving the fibres being within 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
- 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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/56—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 by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
-
- 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
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
-
- 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
- B01D2239/0622—Melt-blown
-
- 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
- B01D2239/12—Special parameters characterising the filtering material
- B01D2239/1233—Fibre diameter
-
- 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
- B01D2239/12—Special parameters characterising the filtering material
- B01D2239/1258—Permeability
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2509/00—Household appliances
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/903—Microfiber, less than 100 micron diameter
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S55/00—Gas separation
- Y10S55/39—Electrets separator
-
- 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]
- Y10T442/608—Including strand or fiber material which is of specific structural definition
- Y10T442/614—Strand or fiber material specified as having microdimensions [i.e., microfiber]
- Y10T442/621—Including other strand or fiber material in a different layer not specified as having microdimensions
Abstract
Improved microfibrous filtration laminate comprising a highly permeable layer of a self-supporting nonwoven fabric which provides support for a layer of a randomly intertangled nonwoven mat of electret-containing microfibers of synthetic polymer is disclosed. The filtration laminate, which is particularly useful as disposable filter bags or as a lining material for disposable paper filter bags for vacuum cleaners, is characterized by thickness and handling characteristics approaching that of paper filter material typically used in disposable vacuum cleaner bags but having improved performance in the areas of an immediate, high particle capture efficiency, minimal flow restriction and long service life.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US288,294 | 1988-12-22 | ||
US07/288,294 US4917942A (en) | 1988-12-22 | 1988-12-22 | Nonwoven filter material |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2004048A1 true CA2004048A1 (en) | 1990-06-22 |
CA2004048C CA2004048C (en) | 2001-01-23 |
Family
ID=23106520
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002004048A Expired - Fee Related CA2004048C (en) | 1988-12-22 | 1989-11-28 | Nonwoven filter material |
Country Status (6)
Country | Link |
---|---|
US (1) | US4917942A (en) |
EP (1) | EP0375234B1 (en) |
JP (1) | JPH0732753B2 (en) |
CA (1) | CA2004048C (en) |
DE (1) | DE68916392T2 (en) |
ES (1) | ES2055106T3 (en) |
Families Citing this family (127)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0627361B2 (en) * | 1988-01-06 | 1994-04-13 | 東レ株式会社 | Self-adhesive apron |
US5540756A (en) * | 1990-03-19 | 1996-07-30 | Hoppitt; Bernard | Electrostatic filter and method of filtering dust |
US5090975A (en) * | 1990-09-21 | 1992-02-25 | The Drackett Company | High efficiency vacuum cleaner bags |
JPH05214A (en) * | 1990-11-30 | 1993-01-08 | Mitsui Petrochem Ind Ltd | Electret filter |
US5306534A (en) * | 1991-03-22 | 1994-04-26 | Home Care Industries, Inc. | Vacuum cleaner bag with electrostatically charged meltblown layer |
JPH04313313A (en) * | 1991-04-12 | 1992-11-05 | Mitsubishi Paper Mills Ltd | Filter medium for liquid filtering |
DE4143237A1 (en) * | 1991-12-31 | 1993-07-01 | Minnesota Mining & Mfg | FILTER ELEMENT FOR FILTERING GASES AND / OR LIQUIDS, IN PARTICULAR FOR FILTERING THE AIR FLOWING INTO THE PASSENGER AREA OF A MOTOR VEHICLE |
USRE35206E (en) * | 1992-03-26 | 1996-04-16 | The University Of Tennessee Research Corporation | Post-treatment of nonwoven webs |
US5244482A (en) * | 1992-03-26 | 1993-09-14 | The University Of Tennessee Research Corporation | Post-treatment of nonwoven webs |
US5441550A (en) * | 1992-03-26 | 1995-08-15 | The University Of Tennessee Research Corporation | Post-treatment of laminated nonwoven cellulosic fiber webs |
US5443606A (en) * | 1992-03-26 | 1995-08-22 | The University Of Tennessee Reserch Corporation | Post-treatment of laminated nonwoven cellulosic fiber webs |
DE4212112A1 (en) * | 1992-04-10 | 1993-10-14 | Sandler C H Gmbh | Multi-layer filter material |
DE4214990A1 (en) * | 1992-05-06 | 1993-11-11 | Minnesota Mining & Mfg | Vacuum cleaner bags and process for their manufacture |
US6251154B1 (en) | 1992-05-06 | 2001-06-26 | 3M Innovative Properties Company | Dust bag and method of production |
US5230727A (en) * | 1992-06-05 | 1993-07-27 | Cybermedic, Inc. | Air filter for medical ventilation equipment and the like |
US5427597A (en) * | 1992-07-07 | 1995-06-27 | Donaldson Company, Inc. | Layered air filter medium having improved efficiency and pleatability |
US5306321A (en) * | 1992-07-07 | 1994-04-26 | Donaldson Company, Inc. | Layered air filter medium having improved efficiency and pleatability |
JP2849291B2 (en) * | 1992-10-19 | 1999-01-20 | 三井化学株式会社 | Electretized nonwoven fabric and method for producing the same |
DE69411632T2 (en) * | 1993-05-26 | 1999-02-11 | Chisso Corp | Filter material and process for its manufacture |
KR100336012B1 (en) * | 1993-08-17 | 2002-10-11 | 미네소타 마이닝 앤드 매뉴팩춰링 캄파니 | How to charge the electret filter media |
DE9318405U1 (en) * | 1993-12-01 | 1994-01-27 | Schoeller & Hoesch Papierfab | Filter material |
DE9320208U1 (en) * | 1993-12-31 | 1994-03-31 | Kalthoff Luftfilter Und Filter | Multi-layer filter material |
CA2124237C (en) | 1994-02-18 | 2004-11-02 | Bernard Cohen | Improved nonwoven barrier and method of making the same |
US5480466A (en) * | 1994-05-04 | 1996-01-02 | Schuller International, Inc. | Air filtration media |
US5607491A (en) * | 1994-05-04 | 1997-03-04 | Jackson; Fred L. | Air filtration media |
US5582632A (en) * | 1994-05-11 | 1996-12-10 | Kimberly-Clark Corporation | Corona-assisted electrostatic filtration apparatus and method |
CA2136576C (en) | 1994-06-27 | 2005-03-08 | Bernard Cohen | Improved nonwoven barrier and method of making the same |
US5525136A (en) * | 1994-09-06 | 1996-06-11 | Rosen; Richard M. | Gasketed multi-media air cleaner |
EP0789612B1 (en) * | 1994-10-31 | 2002-09-04 | Kimberly-Clark Worldwide, Inc. | High density nonwoven filter media |
WO1996017569A2 (en) | 1994-12-08 | 1996-06-13 | Kimberly-Clark Worldwide, Inc. | Method of forming a particle size gradient in an absorbent article |
CA2153278A1 (en) | 1994-12-30 | 1996-07-01 | Bernard Cohen | Nonwoven laminate barrier material |
US5593479A (en) * | 1995-02-02 | 1997-01-14 | Hmi Industries, Inc. | Filter system |
US5647881A (en) * | 1995-04-20 | 1997-07-15 | Minnesota Mining And Manufacturing Company | Shock resistant high efficiency vacuum cleaner filter bag |
GB9510234D0 (en) * | 1995-05-20 | 1995-07-19 | Advanced Allergy Technologies | Allergen particle exclusion and/or retention covering |
WO1996037276A1 (en) * | 1995-05-25 | 1996-11-28 | Kimberly-Clark Worldwide, Inc. | Filter matrix |
DE29509282U1 (en) * | 1995-06-06 | 1996-10-10 | Vivelle Gmbh | Device for filtering solids from aqueous and non-aqueous systems |
ZA965786B (en) | 1995-07-19 | 1997-01-27 | Kimberly Clark Co | Nonwoven barrier and method of making the same |
US5834384A (en) | 1995-11-28 | 1998-11-10 | Kimberly-Clark Worldwide, Inc. | Nonwoven webs with one or more surface treatments |
US5721180A (en) * | 1995-12-22 | 1998-02-24 | Pike; Richard Daniel | Laminate filter media |
DE19606718A1 (en) * | 1996-02-23 | 1997-08-28 | Vorwerk Co Interholding | Multi-layer filter bag |
US5667562A (en) * | 1996-04-19 | 1997-09-16 | Kimberly-Clark Worldwide, Inc. | Spunbond vacuum cleaner webs |
US6211100B1 (en) * | 1996-04-30 | 2001-04-03 | Minnesota Mining And Manufacturing Company | Synthetic filter media |
US5898981A (en) * | 1996-04-30 | 1999-05-04 | Minnesota Mining & Manufacturing Company | Synthetic filter media and method for manufacturing same |
US6162535A (en) | 1996-05-24 | 2000-12-19 | Kimberly-Clark Worldwide, Inc. | Ferroelectric fibers and applications therefor |
US5672188A (en) * | 1996-05-28 | 1997-09-30 | Aaf International | High capacity filter media |
FR2750314B1 (en) * | 1996-06-26 | 1998-10-16 | Laplace Xavier | DUST FILTER FOR VACUUM CLEANER AND EQUIPPED VACUUM CLEANER |
DE19628184A1 (en) * | 1996-07-12 | 1998-01-15 | Irema Filter Gmbh | Particle filter in the form of a pleated layered non-woven material |
US5733351A (en) * | 1996-08-12 | 1998-03-31 | Emerson Electric Co. | Two stage vacuum cleaner filter |
JPH1057728A (en) * | 1996-08-13 | 1998-03-03 | Shinon Denki Sangyo Kk | Mat for removing dust |
US5874373A (en) * | 1997-03-14 | 1999-02-23 | American Felt & Filter Company | Enhanced electret needled filtration media and composites |
DE19731860C1 (en) * | 1997-07-24 | 1999-01-28 | Freudenberg Carl Fa | Dust filter bag |
US6537932B1 (en) | 1997-10-31 | 2003-03-25 | Kimberly-Clark Worldwide, Inc. | Sterilization wrap, applications therefor, and method of sterilizing |
US6090184A (en) * | 1998-02-27 | 2000-07-18 | Hmi Industries, Inc. | Filter system |
US6183536B1 (en) | 1998-05-11 | 2001-02-06 | Airflo Europe, N.V. | Enhanced performance vacuum cleaner bag and method of operation |
US6365088B1 (en) | 1998-06-26 | 2002-04-02 | Kimberly-Clark Worldwide, Inc. | Electret treatment of high loft and low density nonwoven webs |
US6759356B1 (en) | 1998-06-30 | 2004-07-06 | Kimberly-Clark Worldwide, Inc. | Fibrous electret polymeric articles |
DE19832611C2 (en) * | 1998-07-21 | 2002-03-21 | Freudenberg Carl Kg | Vacuum Cleaner Bags |
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 |
DE19845526C5 (en) | 1998-10-02 | 2016-10-20 | Mann+Hummel Innenraumfilter Gmbh & Co. Kg | Filter material for fluid media and method for producing such a filter material |
US6573205B1 (en) * | 1999-01-30 | 2003-06-03 | Kimberly-Clark Worldwide, Inc. | Stable electret polymeric articles |
US6231646B1 (en) * | 1999-03-11 | 2001-05-15 | Chemco Manufacturing Company, Inc. | Paint overspray exhaust air filter |
US6156086A (en) * | 1999-03-22 | 2000-12-05 | 3M Innovative Properties Company | Dual media vacuum filter bag |
DE19919809C2 (en) | 1999-04-30 | 2003-02-06 | Fibermark Gessner Gmbh & Co | Dust filter bag containing nanofiber fleece |
US6372004B1 (en) | 1999-07-08 | 2002-04-16 | Airflo Europe N.V. | High efficiency depth filter and methods of forming the same |
US6322604B1 (en) | 1999-07-22 | 2001-11-27 | Kimberly-Clark Worldwide, Inc | Filtration media and articles incorporating the same |
US6494921B1 (en) | 2000-02-10 | 2002-12-17 | M. Catherine Bennett | Method of removing particulate debris, especially dust mite fecal material from fabric articles in a conventional clothes dryer |
AU2001237000A1 (en) * | 2000-02-15 | 2001-08-27 | Hollingsworth And Vose Company | Melt blown composite hepa filter media and vacuum bag |
US6616722B1 (en) | 2000-05-09 | 2003-09-09 | Hmi Industries, Inc. | Room air cleaner |
US6513184B1 (en) * | 2000-06-28 | 2003-02-04 | S. C. Johnson & Son, Inc. | Particle entrapment system |
US7687416B2 (en) | 2000-08-09 | 2010-03-30 | Aaf-Mcquay Inc. | Arrangement for forming a layered fibrous mat of varied porosity |
US6649547B1 (en) | 2000-08-31 | 2003-11-18 | Kimberly-Clark Worldwide, Inc. | Integrated nonwoven laminate material |
US7115150B2 (en) * | 2000-09-05 | 2006-10-03 | Donaldson Company, Inc. | Mist filtration arrangement utilizing fine fiber layer in contact with media having a pleated construction and floor filter method |
US6743273B2 (en) | 2000-09-05 | 2004-06-01 | Donaldson Company, Inc. | Polymer, polymer microfiber, polymer nanofiber and applications including filter structures |
US7270693B2 (en) * | 2000-09-05 | 2007-09-18 | Donaldson Company, Inc. | Polymer, polymer microfiber, polymer nanofiber and applications including filter structures |
US6746517B2 (en) * | 2000-09-05 | 2004-06-08 | Donaldson Company, Inc. | Filter structure with two or more layers of fine fiber having extended useful service life |
US6596112B1 (en) * | 2000-10-20 | 2003-07-22 | Pall Corporation | Laminates of asymmetric membranes |
CA2428868C (en) * | 2000-11-14 | 2007-03-13 | Lydall, Inc. | Air laid/wet laid gas filtration media |
DE10059050C2 (en) * | 2000-11-28 | 2003-02-27 | Freudenberg Carl Kg | Process for producing a triboelectrically charged nonwoven |
US6511531B1 (en) | 2001-01-26 | 2003-01-28 | Hmi Industries, Inc. | Room air filtering and freshening device |
EP1236494B1 (en) * | 2001-03-02 | 2003-10-15 | Airflo Europe N.V. | Composite filter and method of making the same |
US6488744B2 (en) | 2001-03-19 | 2002-12-03 | Hmi Industries, Inc. | Filter system |
WO2002089956A1 (en) * | 2001-05-02 | 2002-11-14 | Hollingsworth & Vose Company | Filter media with enhanced stiffness and increased dust holding capacity |
RU2300543C2 (en) * | 2001-05-31 | 2007-06-10 | Дональдсон Компани, Инк. | Fine fiber compositions, methods for preparation thereof, and a method of manufacturing fine-fiber material |
KR100435254B1 (en) * | 2001-08-02 | 2004-06-11 | 한국바이린주식회사 | Filter Media for Dust Removal and Its Manufacturing Method |
WO2003018170A1 (en) * | 2001-08-22 | 2003-03-06 | Parker-Hannifin Corporation | High capacity depth filter bag |
US20050160711A1 (en) * | 2004-01-28 | 2005-07-28 | Alain Yang | Air filtration media |
US7815967B2 (en) * | 2001-09-06 | 2010-10-19 | Alain Yang | Continuous process for duct liner production with air laid process and on-line coating |
US20030145566A1 (en) * | 2002-02-04 | 2003-08-07 | Parks David P. | Disposable filtration bag |
US7018438B2 (en) | 2002-03-29 | 2006-03-28 | Hmi Industries, Inc. | Filtering system |
US20030203696A1 (en) * | 2002-04-30 | 2003-10-30 | Healey David Thomas | High efficiency ashrae filter media |
KR100712258B1 (en) * | 2002-06-07 | 2007-04-27 | 구레하 테크 가부시키가이샤 | Non-woven fabric for filter and filter for engine |
KR101160691B1 (en) * | 2002-09-16 | 2012-06-28 | 트리오신 홀딩 아이엔씨 | Electrostatically Charged Filter Media Incorporating An Active Agent |
JP2004125200A (en) * | 2002-09-30 | 2004-04-22 | Sanyo Electric Co Ltd | Refrigerant recovering device and refrigerant recovering method using this device |
US7097684B2 (en) * | 2002-12-12 | 2006-08-29 | Aaf-Mcquay, Inc. | Method of forming combined pleated scrim and filter media materials and product of same |
WO2004110742A1 (en) * | 2003-06-09 | 2004-12-23 | 3M Innovative Properties Company | Casing-free insulation blanket |
EP1648194B1 (en) * | 2003-07-22 | 2012-05-02 | Toho Kasei Co., Ltd. | Material for heat-resistant electret and heat-resistant electret |
US7097694B1 (en) | 2003-12-04 | 2006-08-29 | Fleetguard, Inc. | High performance, high efficiency filter |
DE102006048076A1 (en) * | 2006-10-09 | 2008-04-10 | Mann + Hummel Gmbh | Filter device, in particular for the filtration of combustion air in internal combustion engines |
DE102004020555B4 (en) * | 2004-04-27 | 2006-09-21 | Fibermark Gessner Gmbh & Co. | Dust filter bag, containing foam layer |
US7896940B2 (en) * | 2004-07-09 | 2011-03-01 | 3M Innovative Properties Company | Self-supporting pleated filter media |
US20060057351A1 (en) * | 2004-09-10 | 2006-03-16 | Alain Yang | Method for curing a binder on insulation fibers |
US7771517B2 (en) * | 2007-05-14 | 2010-08-10 | Global Finishing Solutions, L.L.C. | Filtering method |
DE502007000741D1 (en) * | 2007-08-17 | 2009-06-25 | Eurofilters Holding Nv | Vacuum cleaner filter bag |
US8070862B2 (en) * | 2007-09-04 | 2011-12-06 | 3M Innovative Properties Company | Dust collection device for sanding tool |
US8056752B2 (en) * | 2007-09-12 | 2011-11-15 | Carnevali Jeffrey D | Dripless lid for beverage container |
MX345079B (en) * | 2007-12-27 | 2017-01-16 | 3M Innovative Properties Co | Dust collection device for sanding tool. |
US9510718B2 (en) | 2008-07-04 | 2016-12-06 | Emerson Electric Co. | Wet/dry vacuum cleaner filter for wet material collection |
US9675225B2 (en) | 2008-07-04 | 2017-06-13 | Emerson Electric Co. | Filter cage for wet/dry vacuums |
US8206482B2 (en) * | 2008-07-04 | 2012-06-26 | Emerson Electric Co. | Vacuum appliance filter assemblies and associated vacuum systems |
US20100015895A1 (en) * | 2008-07-15 | 2010-01-21 | Hendron Jeffrey J | Chemical mechanical polishing pad having electrospun polishing layer |
US8105411B2 (en) * | 2008-08-28 | 2012-01-31 | Illinois Tool Works Inc. | Fluid filter system and method |
EP2340098B1 (en) | 2008-10-31 | 2016-11-30 | Carl Freudenberg KG | Filter medium for particulate filtration |
US8382872B2 (en) | 2008-12-23 | 2013-02-26 | 3M Innovative Properties Company | Dust collection device for sanding tool |
US20100212272A1 (en) * | 2009-02-24 | 2010-08-26 | Hollingsworth & Vose Company | Filter media suitable for ashrae applications |
JP5573840B2 (en) * | 2009-07-08 | 2014-08-20 | Jnc株式会社 | Air filter material using laminated electret nonwoven fabric |
US10065481B2 (en) * | 2009-08-14 | 2018-09-04 | Freudenberg Filtration Technologies, L.P. | Non-woven air exhauster and filter |
US20110308386A1 (en) * | 2010-06-16 | 2011-12-22 | Jerome Claracq | Efficiency-enhanced gas filter medium |
USD666372S1 (en) | 2011-08-15 | 2012-08-28 | Techtronic Floor Care Technology Limited | Filter housing |
DK2777795T3 (en) * | 2013-03-15 | 2016-06-06 | Eurofilters Holding Nv | Vacuum cleaner filter bag |
US20140360146A1 (en) * | 2013-06-10 | 2014-12-11 | Lydall, Inc. | Wet-laid dual-layer air filtration media including a large diameter synthetic polymeric fiber in a top layer thereof |
US9168476B2 (en) | 2013-10-11 | 2015-10-27 | 3M Innovative Properties Company | Air filter comprising a microperforated film, and method of using |
US10345216B2 (en) * | 2014-08-20 | 2019-07-09 | Research Triangle Institute | Systems, devices, and methods for flow control and sample monitoring control |
WO2016081937A1 (en) * | 2014-11-21 | 2016-05-26 | E. I. Du Pont De Nemours And Company | In-situ charging fiber spinning method for producing a nonwoven electret |
US11833461B2 (en) | 2017-09-07 | 2023-12-05 | Porex Corporation | Small diameter tubular porous fiber filter |
CN116059738B (en) * | 2023-02-22 | 2023-11-24 | 苏州大学 | Multifunctional non-woven filter material and preparation method thereof |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1453447A (en) * | 1972-09-06 | 1976-10-20 | Kimberly Clark Co | Nonwoven thermoplastic fabric |
US4011067A (en) * | 1974-01-30 | 1977-03-08 | Minnesota Mining And Manufacturing Company | Filter medium layered between supporting layers |
US4116648A (en) * | 1976-10-27 | 1978-09-26 | Aktiebolaget Electrolux | Multi-layer filter dust bag for a vacuum cleaner |
US4164400A (en) * | 1976-12-21 | 1979-08-14 | Scott/Chatham Company | Filters |
US4257791A (en) * | 1976-12-21 | 1981-03-24 | Lydall, Inc. | Filter |
US4215682A (en) * | 1978-02-06 | 1980-08-05 | Minnesota Mining And Manufacturing Company | Melt-blown fibrous electrets |
US4375718A (en) * | 1981-03-12 | 1983-03-08 | Surgikos, Inc. | Method of making fibrous electrets |
JPS58109113A (en) * | 1981-12-21 | 1983-06-29 | Japan Vilene Co Ltd | Manufacture of filter medium |
US4589894A (en) * | 1984-04-11 | 1986-05-20 | Minnesota Mining And Manufacturing Co. | Disposable filter for a vacuum cleaner |
US4604203A (en) * | 1984-09-14 | 1986-08-05 | Minnesota Mining And Manufacturing Co. | Cooking oil filtering apparatus and filter therefor |
US4631933A (en) * | 1984-10-12 | 1986-12-30 | Minnesota Mining And Manufacturing Company | Stitch-bonded thermal insulating fabrics |
US4650506A (en) * | 1986-02-25 | 1987-03-17 | Donaldson Company, Inc. | Multi-layered microfiltration medium |
JPS62210026A (en) * | 1986-03-12 | 1987-09-16 | Toray Ind Inc | Cleaner filter |
US4797318A (en) * | 1986-07-31 | 1989-01-10 | Kimberly-Clark Corporation | Active particle-containing nonwoven material, method of formation thereof, and uses thereof |
-
1988
- 1988-12-22 US US07/288,294 patent/US4917942A/en not_active Expired - Lifetime
-
1989
- 1989-11-28 CA CA002004048A patent/CA2004048C/en not_active Expired - Fee Related
- 1989-12-11 ES ES89312886T patent/ES2055106T3/en not_active Expired - Lifetime
- 1989-12-11 EP EP89312886A patent/EP0375234B1/en not_active Revoked
- 1989-12-11 DE DE68916392T patent/DE68916392T2/en not_active Revoked
- 1989-12-20 JP JP1330938A patent/JPH0732753B2/en not_active Expired - Fee Related
Also Published As
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DE68916392T2 (en) | 1995-01-26 |
EP0375234A1 (en) | 1990-06-27 |
EP0375234B1 (en) | 1994-06-22 |
JPH0732753B2 (en) | 1995-04-12 |
CA2004048C (en) | 2001-01-23 |
US4917942A (en) | 1990-04-17 |
ES2055106T3 (en) | 1994-08-16 |
DE68916392D1 (en) | 1994-07-28 |
JPH02220622A (en) | 1990-09-03 |
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