DE68914001D1 - Verfahren zur Herstellung von Elektretfiltern. - Google Patents
Verfahren zur Herstellung von Elektretfiltern.Info
- Publication number
- DE68914001D1 DE68914001D1 DE89300221T DE68914001T DE68914001D1 DE 68914001 D1 DE68914001 D1 DE 68914001D1 DE 89300221 T DE89300221 T DE 89300221T DE 68914001 T DE68914001 T DE 68914001T DE 68914001 D1 DE68914001 D1 DE 68914001D1
- Authority
- DE
- Germany
- Prior art keywords
- production
- electret filters
- electret
- filters
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
-
- 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
- B01D39/163—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin sintered or bonded
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
-
- 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
- D04H1/542—Adhesive fibres
-
- 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
- B01D2239/10—Filtering material manufacturing
-
- 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
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
- Y10T156/1007—Running or continuous length work
- Y10T156/1023—Surface deformation only [e.g., embossing]
-
- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24058—Structurally defined web or sheet [e.g., overall dimension, etc.] including grain, strips, or filamentary elements in respective layers or components in angular relation
- Y10T428/24074—Strand or strand-portions
- Y10T428/24091—Strand or strand-portions with additional layer[s]
-
- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
- Y10T428/24612—Composite web or sheet
-
- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24628—Nonplanar uniform thickness material
-
- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24826—Spot bonds connect components
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63004464A JP2585334B2 (ja) | 1988-01-12 | 1988-01-12 | エレクトレット化合成繊維不織布フィルタの製造方法 |
JP63017969A JP2732474B2 (ja) | 1988-01-28 | 1988-01-28 | エレクトレットフィルタおよびその製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68914001D1 true DE68914001D1 (de) | 1994-04-28 |
DE68914001T2 DE68914001T2 (de) | 1994-07-07 |
Family
ID=26338232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE68914001T Expired - Fee Related DE68914001T2 (de) | 1988-01-12 | 1989-01-11 | Verfahren zur Herstellung von Elektretfiltern. |
Country Status (5)
Country | Link |
---|---|
US (1) | US5143767A (de) |
EP (1) | EP0324601B1 (de) |
KR (1) | KR910001895B1 (de) |
CA (1) | CA1325983C (de) |
DE (1) | DE68914001T2 (de) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE68919363T2 (de) * | 1989-05-26 | 1995-03-30 | Toray Industries | Staubdichte kopfhaube. |
JPH04330907A (ja) * | 1991-05-02 | 1992-11-18 | Mitsui Petrochem Ind Ltd | エレクトレットフィルターの製造方法 |
KR950010936A (ko) * | 1993-10-20 | 1995-05-15 | 시바타 미노루 | 엘렉트릿 필터 |
CA2124237C (en) | 1994-02-18 | 2004-11-02 | Bernard Cohen | Improved nonwoven barrier and method of making the same |
CA2136576C (en) | 1994-06-27 | 2005-03-08 | Bernard Cohen | Improved nonwoven barrier and method of making the same |
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 |
DE19513600C5 (de) * | 1995-04-10 | 2007-10-18 | Melitta Haushaltsprodukte Gmbh & Co. Kg | Filter für Aufgußgetränke, insbesondere Kaffeefilter und Verfahren zur Herstellung eines derartigen Filters |
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 |
US6162535A (en) | 1996-05-24 | 2000-12-19 | Kimberly-Clark Worldwide, Inc. | Ferroelectric fibers and applications therefor |
DE19733018C1 (de) * | 1997-07-31 | 1999-01-21 | Schmude Gmbh H | Filter mit Stützstrukturverbund |
US6537932B1 (en) | 1997-10-31 | 2003-03-25 | Kimberly-Clark Worldwide, Inc. | Sterilization wrap, applications therefor, and method of sterilizing |
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 |
US6573205B1 (en) * | 1999-01-30 | 2003-06-03 | Kimberly-Clark Worldwide, Inc. | Stable electret polymeric articles |
JP2002070501A (ja) * | 2000-09-04 | 2002-03-08 | Honda Motor Co Ltd | 回転流体機械 |
US20040011204A1 (en) * | 2001-10-11 | 2004-01-22 | Hendrik Both | Electrostatic fibrous filter web and method of making same |
EP1331030A1 (de) * | 2002-01-17 | 2003-07-30 | 3M Innovative Properties Company | Elektrostatisch geladenes Filterfaservlies und Verfahren zu seiner Herstellung |
DE102010025219A1 (de) | 2010-06-23 | 2011-12-29 | Hydac Filtertechnik Gmbh | Filtermaterial für Fluide und Verfahren zur Herstellung eines Filtermaterials |
DE102012020615A1 (de) | 2012-10-19 | 2014-04-24 | Hydac Filtertechnik Gmbh | Verfahren zur Oberflächenbehandlung eines Filtermediums |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2614160C3 (de) * | 1976-04-02 | 1980-04-30 | Ramisch Kleinewefers Kalander Gmbh, 4150 Krefeld | Verfahren und Vorrichtung zum kontinuierlichen Perforieren bahnförmiger thermoplastischer Vliese, insbesondere von Faservliesen |
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 |
US4302495A (en) * | 1980-08-14 | 1981-11-24 | Hercules Incorporated | Nonwoven fabric of netting and thermoplastic polymeric microfibers |
DE3248753A1 (de) * | 1982-12-31 | 1984-07-12 | Akzo Gmbh, 5600 Wuppertal | Verfahren zum verdichten von faservliesen |
US4874659A (en) * | 1984-10-24 | 1989-10-17 | Toray Industries | Electret fiber sheet and method of producing same |
DE3640580A1 (de) * | 1986-11-27 | 1988-06-09 | Akzo Gmbh | Kombinationsmatte mit armierung |
-
1989
- 1989-01-11 CA CA000588006A patent/CA1325983C/en not_active Expired - Fee Related
- 1989-01-11 EP EP89300221A patent/EP0324601B1/de not_active Expired - Lifetime
- 1989-01-11 DE DE68914001T patent/DE68914001T2/de not_active Expired - Fee Related
- 1989-01-12 US US07/296,000 patent/US5143767A/en not_active Expired - Fee Related
- 1989-01-12 KR KR1019890000245A patent/KR910001895B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR910001895B1 (ko) | 1991-03-30 |
EP0324601A3 (en) | 1990-07-18 |
CA1325983C (en) | 1994-01-11 |
DE68914001T2 (de) | 1994-07-07 |
US5143767A (en) | 1992-09-01 |
EP0324601B1 (de) | 1994-03-23 |
KR890011621A (ko) | 1989-08-21 |
EP0324601A2 (de) | 1989-07-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: MITSUI CHEMICALS, INC., TOKIO/TOKYO, JP |
|
8339 | Ceased/non-payment of the annual fee |