IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0216186
(2002-08-12)
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발명자
/ 주소 |
- Hughes,Douglass E.
- Buhler,Rich
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출원인 / 주소 |
- 3M Innovative Properties Company
|
인용정보 |
피인용 횟수 :
23 인용 특허 :
107 |
초록
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The filtration device of the present invention relies on materials and methodologies that achieve the formation of a structural matrix that may later accommodate the addition of other adsorbent materials as opposed to merely binding adsorbent materials together through the use of compression and/or
The filtration device of the present invention relies on materials and methodologies that achieve the formation of a structural matrix that may later accommodate the addition of other adsorbent materials as opposed to merely binding adsorbent materials together through the use of compression and/or binder materials. The filter device of the present invention relies on (i) a unique method of processing to achieve maximum density of materials, (ii) a polymeric material having a distinct morphology and (iii) a very small micron diameter of the polymeric material to create uniformity. For example, in place of compression to increase density, the materials comprising the filtration device of the present invention are instead vibrated into a mold cavity. Thus, the methodology of the current invention optimizes how all of the materials comprising the filtration device fit together without compaction. The material being processed is vibrated as it is gradually poured into the mold. Once the mold cavity has been filled to a point where it will hold no more material, it is heated and then cooled. In place of an external binder, the structural material adheres to itself as it softens. This results in a tortuous path matrix of pores rather than an absolute pore barrier.
대표청구항
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The invention claimed is: 1. A method for producing a filtration matrix comprising the acts of: providing a plurality of a first polymer particle, wherein the particles have a convoluted structure and an average particle size of about 30 to about 40 microns, the first polymer particles being perfor
The invention claimed is: 1. A method for producing a filtration matrix comprising the acts of: providing a plurality of a first polymer particle, wherein the particles have a convoluted structure and an average particle size of about 30 to about 40 microns, the first polymer particles being perforated, the plurality of first polymer particles comprising polyethylene having a molecular weight greater than about 750,000; providing a plurality of at least a second polymer particle having a generally spherical, non-porous structure and an average particle size of about 30 to about 65 microns; providing a filtering material; blending about 10% to about 65% by weight of the first polymer particles, about 0.5% to about 65% by weight of the second polymer particles and about 30.0% to about 75% by weight of the filtering material together; and processing the resulting blend such that a structural matrix is formed thereby. 2. The method of claim 1 further comprising the act of: after the blending act, the resultant blend is vibrated. 3. The method of claim 1 further comprising the act of: after the blending act, the resultant blend is sintered. 4. The method of claim 1 further comprising the act of: after the blending act, the resultant blend is vibrated and sintered. 5. The method of claim 1 wherein the second polymer particles comprise: polyethylene. 6. The method of claim 1 wherein the second polymer particles comprise: polyethylene having a molecular weight greater than about 750, 000. 7. The method of claim 1 wherein the second polymer particles comprise: polyethylene having a molecular weight of about 3,000,000. 8. The method of claim 1 wherein the first polymer particles and the second polymer particles comprise: polyethylene having a molecular weight of about 3,000,000. 9. The method of claim 1 wherein the filtering material comprises: activated carbon. 10. The method of claim 1 wherein the filtering material is selected from the group comprising: activated carbon, heavy metal reduction media, arsenic removal media, antimicrobial media, ion exchange media, iodinated resin, fiber, acid gas adsorption media and particulate removal media. 11. The method of claim 1 wherein the filtering material comprises: activated carbon having an average particle size of about 20 to about 180 microns. 12. The method of claim 1 wherein the filtering material comprises: activated carbon wherein about 90% of the actual particle distribution ranges from less than 1 micron to about 45 microns. 13. The method of claim 1 wherein the first polymer particles comprise: polyethylene having a molecular weight of about 3,000,000. 14. A method for producing a filtration matrix comprising the acts of: providing a plurality of a first polymer particles , wherein the particles have a convoluted structure and a particle distribution range between about 10 and about 100 microns, optionally the first polymer particles being perforated, the plurality of first polymer particles comprising polyethylene having a molecular weight greater than about 750,000; providing a plurality of a second polymer particles having a generally spherical, non-porous structure and a particle distribution range between about 10 and about 180 micron; providing a filtering material; blending about 10% to about 65% by weight of the first polymer particles, about 0.05% to about 65% by weight of the second polymer particles and 30% to about 75% by weight of the filtering material together; and processing the resulting blend such that a structural matrix is formed thereby. 15. The method of claim 14 further comprising the act of: after the blending act, the resultant blend is vibrated. 16. The method of claim 14 further comprising the act of: after the blending act, the resultant blend is sintered. 17. The method of claim 14 further comprising the act of: after the blending act, the resultant blend is vibrated and sintered. 18. The method of claim 14 wherein the second polymer particles comprise: polyethylene. 19. The method of claim 14 wherein the second polymer particles comprise: polyethylene having a molecular weight greater than about 750, 000. 20. The method of claim 14 wherein the second polymer particles comprise: polyethylene having a molecular weight of about 3,000,000. 21. The method of claim 14 wherein the first polymer particles and the second polymer particles comprise: polyethylene having a molecular weight of about 3,000,000. 22. The method of claim 14 wherein the filtering material comprises: activated carbon. 23. The method of claim 14 wherein the filtering material is selected from the group comprising: activated carbon, heavy metal reduction media, arsenic removal media, antimicrobial media, ion exchange media, iodinated resin, fiber, acid gas adsorption media and particulate removal media. 24. The method of claim 14 wherein the filtering material comprises: activated carbon having an average particle size of about 20 to about 180 microns. 25. The method of claim 14 wherein the filtering material comprises: activated carbon wherein about 90% of the actual particle distribution ranges from less than 1 micron to about 45 microns.
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