CA2227422A1 - Fibrous webs having enhanced electret properties - Google Patents
Fibrous webs having enhanced electret properties Download PDFInfo
- Publication number
- CA2227422A1 CA2227422A1 CA002227422A CA2227422A CA2227422A1 CA 2227422 A1 CA2227422 A1 CA 2227422A1 CA 002227422 A CA002227422 A CA 002227422A CA 2227422 A CA2227422 A CA 2227422A CA 2227422 A1 CA2227422 A1 CA 2227422A1
- Authority
- CA
- Canada
- Prior art keywords
- web
- thermoplastic resin
- compound
- group
- pentene
- 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.)
- Abandoned
Links
- 229910001868 water Inorganic materials 0.000 claims abstract description 54
- 239000000654 additive Substances 0.000 claims abstract description 52
- 239000000835 fiber Substances 0.000 claims abstract description 51
- 230000000996 additive effect Effects 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000000203 mixture Substances 0.000 claims abstract description 30
- 238000001914 filtration Methods 0.000 claims abstract description 27
- -1 triazine compound Chemical class 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 21
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 19
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 7
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 7
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 6
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical group C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 125000004433 nitrogen atom Chemical group N* 0.000 claims abstract description 3
- 230000002708 enhancing effect Effects 0.000 claims abstract 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 29
- 150000001875 compounds Chemical class 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 23
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 claims description 17
- 125000000217 alkyl group Chemical group 0.000 claims description 16
- 239000004743 Polypropylene Substances 0.000 claims description 14
- 229920001155 polypropylene Polymers 0.000 claims description 14
- 125000002947 alkylene group Chemical group 0.000 claims description 9
- 125000005647 linker group Chemical group 0.000 claims description 9
- 125000005010 perfluoroalkyl group Chemical group 0.000 claims description 9
- 125000005420 sulfonamido group Chemical group S(=O)(=O)(N*)* 0.000 claims description 9
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 8
- 229920001577 copolymer Polymers 0.000 claims description 7
- 229920000098 polyolefin Polymers 0.000 claims description 6
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 6
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 6
- 239000004793 Polystyrene Substances 0.000 claims description 5
- 229910052731 fluorine Inorganic materials 0.000 claims description 5
- 239000004417 polycarbonate Substances 0.000 claims description 5
- 229920000515 polycarbonate Polymers 0.000 claims description 5
- 229920000728 polyester Polymers 0.000 claims description 5
- 229920002223 polystyrene Polymers 0.000 claims description 5
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 5
- 239000004800 polyvinyl chloride Substances 0.000 claims description 5
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 5
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 2
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims 1
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 24
- 239000007787 solid Substances 0.000 description 23
- 239000002002 slurry Substances 0.000 description 22
- 229920001410 Microfiber Polymers 0.000 description 20
- 239000003658 microfiber Substances 0.000 description 20
- 229920005989 resin Polymers 0.000 description 15
- 239000011347 resin Substances 0.000 description 15
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 14
- 239000007921 spray Substances 0.000 description 12
- 230000035515 penetration Effects 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 238000001125 extrusion Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 8
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- MYWUZJCMWCOHBA-VIFPVBQESA-N methamphetamine Chemical compound CN[C@@H](C)CC1=CC=CC=C1 MYWUZJCMWCOHBA-VIFPVBQESA-N 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 description 4
- 150000008064 anhydrides Chemical class 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 239000012265 solid product Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 239000000443 aerosol Substances 0.000 description 3
- 239000002184 metal Chemical class 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- IHDBZCJYSHDCKF-UHFFFAOYSA-N 4,6-dichlorotriazine Chemical class ClC1=CC(Cl)=NN=N1 IHDBZCJYSHDCKF-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- OWYWGLHRNBIFJP-UHFFFAOYSA-N Ipazine Chemical compound CCN(CC)C1=NC(Cl)=NC(NC(C)C)=N1 OWYWGLHRNBIFJP-UHFFFAOYSA-N 0.000 description 2
- CHSJRQIBDLFVEJ-UHFFFAOYSA-N N,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-octadecafluoro-N-(trifluoromethyl)octan-1-amine Chemical compound FC(F)(F)N(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F CHSJRQIBDLFVEJ-UHFFFAOYSA-N 0.000 description 2
- 241000282320 Panthera leo Species 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 239000002952 polymeric resin Substances 0.000 description 2
- 229920000306 polymethylpentene Polymers 0.000 description 2
- 239000011116 polymethylpentene Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002594 sorbent Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- QIJIUJYANDSEKG-UHFFFAOYSA-N 2,4,4-trimethylpentan-2-amine Chemical compound CC(C)(C)CC(C)(C)N QIJIUJYANDSEKG-UHFFFAOYSA-N 0.000 description 1
- VBLXCTYLWZJBKA-UHFFFAOYSA-N 2-(trifluoromethyl)aniline Chemical compound NC1=CC=CC=C1C(F)(F)F VBLXCTYLWZJBKA-UHFFFAOYSA-N 0.000 description 1
- VIUDTWATMPPKEL-UHFFFAOYSA-N 3-(trifluoromethyl)aniline Chemical compound NC1=CC=CC(C(F)(F)F)=C1 VIUDTWATMPPKEL-UHFFFAOYSA-N 0.000 description 1
- ODGIMMLDVSWADK-UHFFFAOYSA-N 4-trifluoromethylaniline Chemical compound NC1=CC=C(C(F)(F)F)C=C1 ODGIMMLDVSWADK-UHFFFAOYSA-N 0.000 description 1
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 1
- 101150105088 Dele1 gene Proteins 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- GCQZRXDRVIKQBN-UHFFFAOYSA-N N,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,9-icosafluoro-N-(trifluoromethyl)nonan-1-amine Chemical compound FC(F)(F)N(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F GCQZRXDRVIKQBN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 101100409194 Rattus norvegicus Ppargc1b gene Proteins 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- FYXKZNLBZKRYSS-UHFFFAOYSA-N benzene-1,2-dicarbonyl chloride Chemical compound ClC(=O)C1=CC=CC=C1C(Cl)=O FYXKZNLBZKRYSS-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- RTWNYYOXLSILQN-UHFFFAOYSA-N methanediamine Chemical compound NCN RTWNYYOXLSILQN-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000006199 nebulizer Substances 0.000 description 1
- IOQPZZOEVPZRBK-UHFFFAOYSA-N octan-1-amine Chemical compound CCCCCCCCN IOQPZZOEVPZRBK-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- QQBPIHBUCMDKFG-UHFFFAOYSA-N phenazopyridine hydrochloride Chemical compound Cl.NC1=NC(N)=CC=C1N=NC1=CC=CC=C1 QQBPIHBUCMDKFG-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000006187 pill Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical group [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 description 1
- 239000012258 stirred mixture Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 125000006158 tetracarboxylic acid group Chemical group 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- 229940124543 ultraviolet light absorber Drugs 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- 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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
-
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
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- 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
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D2239/0225—Side-by-side
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- B01D2239/0233—Island-in-sea
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- 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
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- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/0636—Two or more types of fibres present in the filter material
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- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/064—The fibres being mixed
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D—SEPARATION
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- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
- B01D2239/0663—The layers being joined by hydro-entangling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2239/10—Filtering material manufacturing
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- 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
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- 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
- B01D2239/1291—Other parameters
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/16—Controlling the light source by timing means
-
- 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
- Y10S55/05—Methods of making filter
-
- 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
- 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
-
- 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.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2418—Coating or impregnation increases electrical conductivity or anti-static quality
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Nonwoven Fabrics (AREA)
- Filtering Materials (AREA)
- Electrostatic Separation (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/514,866 US5908598A (en) | 1995-08-14 | 1995-08-14 | Fibrous webs having enhanced electret properties |
| US08/514,866 | 1995-08-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2227422A1 true CA2227422A1 (en) | 1997-02-27 |
Family
ID=24048997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002227422A Abandoned CA2227422A1 (en) | 1995-08-14 | 1996-07-18 | Fibrous webs having enhanced electret properties |
Country Status (12)
| Country | Link |
|---|---|
| US (6) | US5908598A (enExample) |
| EP (1) | EP0845058B1 (enExample) |
| JP (1) | JP4069195B2 (enExample) |
| KR (1) | KR100405072B1 (enExample) |
| CN (1) | CN1188559C (enExample) |
| AU (1) | AU700461B2 (enExample) |
| BR (1) | BR9610200A (enExample) |
| CA (1) | CA2227422A1 (enExample) |
| DE (1) | DE69627670T2 (enExample) |
| ES (1) | ES2195001T3 (enExample) |
| MX (1) | MX9800828A (enExample) |
| WO (1) | WO1997007272A1 (enExample) |
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- 1996-07-18 WO PCT/US1996/011878 patent/WO1997007272A1/en not_active Ceased
- 1996-07-18 DE DE69627670T patent/DE69627670T2/de not_active Expired - Lifetime
- 1996-07-18 JP JP50928597A patent/JP4069195B2/ja not_active Expired - Fee Related
- 1996-07-18 ES ES96926091T patent/ES2195001T3/es not_active Expired - Lifetime
- 1996-07-18 CN CNB96196216XA patent/CN1188559C/zh not_active Expired - Lifetime
- 1996-07-18 BR BR9610200A patent/BR9610200A/pt not_active IP Right Cessation
- 1996-07-18 EP EP96926091A patent/EP0845058B1/en not_active Expired - Lifetime
- 1996-07-18 CA CA002227422A patent/CA2227422A1/en not_active Abandoned
- 1996-07-18 KR KR10-1998-0701030A patent/KR100405072B1/ko not_active Expired - Fee Related
- 1996-07-18 AU AU66481/96A patent/AU700461B2/en not_active Expired
-
1997
- 1997-12-02 US US08/982,656 patent/US5919847A/en not_active Expired - Lifetime
- 1997-12-02 US US08/982,818 patent/US5976208A/en not_active Expired - Lifetime
- 1997-12-02 US US08/982,628 patent/US5968635A/en not_active Expired - Lifetime
- 1997-12-02 US US08/982,687 patent/US6002017A/en not_active Expired - Lifetime
-
1999
- 1999-01-04 US US09/224,964 patent/US6268495B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US5976208A (en) | 1999-11-02 |
| KR100405072B1 (ko) | 2004-03-24 |
| WO1997007272A1 (en) | 1997-02-27 |
| JP4069195B2 (ja) | 2008-04-02 |
| CN1188559C (zh) | 2005-02-09 |
| US5908598A (en) | 1999-06-01 |
| EP0845058A1 (en) | 1998-06-03 |
| CN1192790A (zh) | 1998-09-09 |
| DE69627670T2 (de) | 2004-04-08 |
| AU6648196A (en) | 1997-03-12 |
| US5919847A (en) | 1999-07-06 |
| BR9610200A (pt) | 1998-08-04 |
| AU700461B2 (en) | 1999-01-07 |
| JPH11510862A (ja) | 1999-09-21 |
| EP0845058B1 (en) | 2003-04-23 |
| DE69627670D1 (de) | 2003-05-28 |
| US6268495B1 (en) | 2001-07-31 |
| US5968635A (en) | 1999-10-19 |
| KR19990036362A (ko) | 1999-05-25 |
| MX9800828A (es) | 1998-04-30 |
| ES2195001T3 (es) | 2003-12-01 |
| US6002017A (en) | 1999-12-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |