WO1996013320B1 - Electrically conductive composite polymeric material - Google Patents
Electrically conductive composite polymeric materialInfo
- Publication number
- WO1996013320B1 WO1996013320B1 PCT/GB1995/002521 GB9502521W WO9613320B1 WO 1996013320 B1 WO1996013320 B1 WO 1996013320B1 GB 9502521 W GB9502521 W GB 9502521W WO 9613320 B1 WO9613320 B1 WO 9613320B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter element
- accordance
- electrically conductive
- polymeric material
- conductive elements
- 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.)
- Ceased
Links
Abstract
An electrically conductive composite material for forming at least a part, such as a header end section (13), of a filter element (10) comprises a body (13, 14, 31) of polymeric material which has moulded therein an array (16) of interconnected filamentary type electrically conductive elements (17, 18) which are in electrically conductive association with one another, the filamentary type elements having free ends and at least some of the said free ends lying exposed at a surface region of the polymeric material.
Claims
1 . A filter element comprising at least in part a body of an electrically conductive composite polymeric material which has moulded therein an array of interconnected filamentary type electrically conductive elements which are in electrically conductive association with one another, the filamentary elements having free ends and at least some of said free ends lying exposed at a surface region of the polymeric material.
2. A filter element in accordance with Claim 1 wherein the polymeric material is of a compressible type.
3. A filter element in accordance with Claim 2 wherein the polymeric material has a hardness in the range 60 to 70 Shore A.
4. A filter element in accordance with any one of the Claims 1 to 3 wherein the polymeric material is polyurethane.
5. A filter element in accordance with Claim 1 wherein the polymeric material is substantially incompressible.
6. A filter element in accordance with Claim 5 wherein the polymeric material is epoxy resin.
7. A filter element in accordance with any one of the preceding Claims wherein the body of polymeric material comprises at least in part a section of elongate form.
8. A filter element in accordance with Claim 7 wherein said section has a cross-sectional shape for which the maximum ratio of the dimensions of the cross-section in any two mutually perpendicular directions is less than 5:1.
9. A filter element in accordance with Claim 8 wherein said ratio is less than 3: 1 .
10. A filter element in accordance with any one of Claims 7 to 9 wherein the electrically conductive elements extend substantially wholly through said cross-section.
1 1 . A filter element in accordance with any one of Claims 1 to 9 wherein the body of polymeric material comprises a first region of substantially incompressible polymeric material and a second region of a polymeric material of a compressible type.
12. A filter element in accordance with Claim 1 1 wherein the electrically conductive elements lie in only one of the said regions.
13. A filter element in accordance with Claim 11 wherein the electrically conductive elements lie in both of the said regions.
14. A filter element in accordance with any one of Claims 1 1 to 13 wherein the electrically conductive elements extend substantially wholly through at least one of said regions.
15. A filter element in accordance with one of the preceding claims wherein the array of interconnected filamentary type electrically conductive elements is in the form of a three dimensional mesh having outer surface regions at which the elements have free ends.
16. A filter element in accordance with any one of the Claims 1 to 14 wherein the array of interconnected filamentary type electrically conductive elements comprises at least one electrically conductive core strand from which a plurality of filaments extend radially outwardly.
17. A filter element in accordance with any one of the preceding claims wherein the electrically conductive elements are elements of a metallic material.
18. A filter element in accordance with any one of Claims 1 to 16 wherein the electrically conductive elements are elements of carbon fibre.
19. A filter element in accordance with any one of the preceding Claims wherein said body of composite material is moulded and structurally interconnects in a fluid tight manner with another part of the filter element.
20. A filter element in accordance with Claim 19 wherein said another part of the filter element is electrically conductive and is in electrical contact with the electrically conductive elements of the body of composite material.
21. A filter element in accordance with Claim 20 wherein said another part comprises a filter medium.
22. A filter element according to Claim 21 wherein said filter medium comprises at least a surface of electrically conductive material.
23. A filter element in accordance with any one of the preceding Claims 1 5
wherein said body of composite polymeric material is a header end section of the filter element.
24. A filter element in accordance with Claim 1 and substantially as described with reference to and as shown in the Drawings.
25. A method for the manufacture of a filter element comprising at least in part a body of an electrically conductive composite polymeric material, said method comprising forming said body by providing a mould, positioning in the mould an array of interconnected filamentary type electrically conductive elements, adding liquid polymeric material to the mould to surround and embed the conductive material and allowing the liquid polymeric material to solidify.
26. A method according to Claim 25 wherein the liquid polymeric material has a viscosity in the range 3,000 to 4,000 mPas at 25 °C.
27. A method according to Claim 25 or Claim 26 wherein the mould has a pair of confronting surface areas and end regions of at least some of the filaments bear resiliently against said confronting surfaces.
28. A method according to any one of Claims 25 to 27 applied to the manufacture of a filter element in accordance with any one of Claims 1 to 24.
29. A method for the manufacture of a composite material in accordance with Claim 25 and substantially as hereinbefore described.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9421691.8 | 1994-10-27 | ||
| GB9421691A GB9421691D0 (en) | 1994-10-27 | 1994-10-27 | Tapered plug valve |
| GB9423939A GB9423939D0 (en) | 1994-10-27 | 1994-11-28 | Electrically conductive composite polymeric material |
| GB9423939.9 | 1994-11-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1996013320A1 WO1996013320A1 (en) | 1996-05-09 |
| WO1996013320B1 true WO1996013320B1 (en) | 1996-06-20 |
Family
ID=26305879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/GB1995/002521 Ceased WO1996013320A1 (en) | 1994-10-27 | 1995-10-26 | Electrically conductive composite polymeric material |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2294468B (en) |
| WO (1) | WO1996013320A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19715196C2 (en) * | 1997-04-11 | 1999-04-22 | Herding Gmbh | Filter element |
| DE19848774A1 (en) | 1998-10-22 | 2000-05-04 | Herding Gmbh | Filter unit for interchangeable insertion in the housing of a filter system |
| DE50309556D1 (en) * | 2003-01-31 | 2008-05-15 | Cft Gmbh | DUST FILTER FOR USE IN GAS HAZARDOUS WORKS |
| GB0725015D0 (en) * | 2007-12-21 | 2008-01-30 | Madison Filter 981 Ltd | Filter element frames |
| AU2009207467B2 (en) | 2008-01-21 | 2013-03-28 | Madison Filter 981 Limited | Improvements in belt seams |
| JP5300416B2 (en) * | 2008-10-31 | 2013-09-25 | 三洋電機株式会社 | Battery system |
| DE102012223927A1 (en) * | 2012-12-20 | 2014-06-26 | Mahle International Gmbh | filter element |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1319459A (en) * | 1970-01-21 | 1973-06-06 | Grace W R & Co | Production of filter elements |
| GB1394681A (en) * | 1971-04-06 | 1975-05-21 | Ici Ltd | Electrodes |
| FR2347854A1 (en) * | 1976-04-06 | 1977-11-04 | Vibrachoc Sa | RF interference screening sheet - has flexible wire mesh sandwiched between two elastomeric sheets |
| US4128251A (en) * | 1977-09-21 | 1978-12-05 | Champion Laboratories, Inc. | Sealing gasket for air filter |
| US4882089A (en) * | 1982-03-16 | 1989-11-21 | American Cyanamid Company | Compositions convertible to reinforced conductive components and articles incorporating same |
| GB2134811B (en) * | 1983-02-08 | 1986-07-23 | Ross Bryan Barrington | Filter unit |
| FR2591530B1 (en) * | 1985-12-17 | 1988-09-02 | Stratinor | LAMINATE COMPOSITE MATERIAL, A PROCESS FOR ITS PREPARATION AND ITS APPLICATION TO THE TREATMENT OF ELECTROSTATIC OR ELECTROMAGNETIC PHENOMENES |
| CA2007161C (en) * | 1989-01-23 | 2001-09-18 | David C. Koskenmaki | Metal fiber mat/polymer composite |
| JPH02307551A (en) * | 1989-05-20 | 1990-12-20 | Abisare:Kk | Electrostatic attraction sheet |
| DE3918342C1 (en) * | 1989-06-06 | 1990-06-07 | Knecht Filterwerke Gmbh, 7000 Stuttgart, De | |
| AU6178990A (en) * | 1989-07-27 | 1991-03-11 | Hyperion Catalysis International, Inc. | Composites and methods for making same |
| JPH03289004A (en) * | 1990-04-04 | 1991-12-19 | Matsushita Electric Ind Co Ltd | Conductive resin composition |
| US5066318A (en) * | 1990-04-13 | 1991-11-19 | Pcf Group, Inc. | Filter element gasket |
| US5111178A (en) * | 1990-06-15 | 1992-05-05 | Bourns, Inc. | Electrically conductive polymer thick film of improved wear characteristics and extended life |
| US5262229A (en) * | 1991-11-04 | 1993-11-16 | United Technical Products, Inc. | Conductive releasable adhesive and method of making same |
-
1995
- 1995-10-26 GB GB9521964A patent/GB2294468B/en not_active Expired - Fee Related
- 1995-10-26 WO PCT/GB1995/002521 patent/WO1996013320A1/en not_active Ceased
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