WO2008016788A1 - Pleated filter with monolayer monocomponent meltspun media - Google Patents
Pleated filter with monolayer monocomponent meltspun media Download PDFInfo
- Publication number
- WO2008016788A1 WO2008016788A1 PCT/US2007/073882 US2007073882W WO2008016788A1 WO 2008016788 A1 WO2008016788 A1 WO 2008016788A1 US 2007073882 W US2007073882 W US 2007073882W WO 2008016788 A1 WO2008016788 A1 WO 2008016788A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- web
- fibers
- process according
- pleated filter
- fiber
- Prior art date
Links
- 239000002356 single layer Substances 0.000 title claims abstract description 34
- 239000000835 fiber Substances 0.000 claims abstract description 185
- 239000011159 matrix material Substances 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 230000001427 coherent effect Effects 0.000 claims abstract description 4
- 238000010791 quenching Methods 0.000 claims description 48
- 238000010438 heat treatment Methods 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 39
- 230000000171 quenching effect Effects 0.000 claims description 38
- 239000002245 particle Substances 0.000 claims description 30
- 238000002844 melting Methods 0.000 claims description 29
- 230000008018 melting Effects 0.000 claims description 29
- 230000008569 process Effects 0.000 claims description 26
- 229920000642 polymer Polymers 0.000 claims description 21
- 238000001914 filtration Methods 0.000 claims description 17
- -1 polypropylene Polymers 0.000 claims description 14
- 239000004743 Polypropylene Substances 0.000 claims description 8
- 229920001155 polypropylene Polymers 0.000 claims description 8
- 239000000443 aerosol Substances 0.000 claims description 6
- 238000003490 calendering Methods 0.000 claims description 6
- 238000002074 melt spinning Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 abstract description 13
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 230000002787 reinforcement Effects 0.000 abstract description 3
- 239000003570 air Substances 0.000 description 64
- 239000000463 material Substances 0.000 description 25
- 239000012530 fluid Substances 0.000 description 15
- 238000001125 extrusion Methods 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 230000035515 penetration Effects 0.000 description 12
- 238000012360 testing method Methods 0.000 description 12
- 229910001868 water Inorganic materials 0.000 description 12
- 230000000877 morphologic effect Effects 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 229920001410 Microfiber Polymers 0.000 description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 239000013078 crystal Substances 0.000 description 8
- 239000003658 microfiber Substances 0.000 description 8
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 7
- 238000003860 storage Methods 0.000 description 7
- 238000011282 treatment Methods 0.000 description 7
- 239000000654 additive Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000000155 melt Substances 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000004026 adhesive bonding Methods 0.000 description 4
- 239000012080 ambient air Substances 0.000 description 4
- 239000011093 chipboard Substances 0.000 description 4
- 239000002178 crystalline material Substances 0.000 description 4
- 238000000113 differential scanning calorimetry Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000011152 fibreglass Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 239000004831 Hot glue Substances 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000001351 cycling effect Effects 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
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000007429 general method Methods 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 239000004611 light stabiliser Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- ORECYURYFJYPKY-UHFFFAOYSA-N n,n'-bis(2,2,6,6-tetramethylpiperidin-4-yl)hexane-1,6-diamine;2,4,6-trichloro-1,3,5-triazine;2,4,4-trimethylpentan-2-amine Chemical compound CC(C)(C)CC(C)(C)N.ClC1=NC(Cl)=NC(Cl)=N1.C1C(C)(C)NC(C)(C)CC1NCCCCCCNC1CC(C)(C)NC(C)(C)C1 ORECYURYFJYPKY-UHFFFAOYSA-N 0.000 description 2
- 239000003348 petrochemical agent Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229920006126 semicrystalline polymer Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- FMZUHGYZWYNSOA-VVBFYGJXSA-N (1r)-1-[(4r,4ar,8as)-2,6-diphenyl-4,4a,8,8a-tetrahydro-[1,3]dioxino[5,4-d][1,3]dioxin-4-yl]ethane-1,2-diol Chemical compound C([C@@H]1OC(O[C@@H]([C@@H]1O1)[C@H](O)CO)C=2C=CC=CC=2)OC1C1=CC=CC=C1 FMZUHGYZWYNSOA-VVBFYGJXSA-N 0.000 description 1
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- 239000004713 Cyclic olefin copolymer Substances 0.000 description 1
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 231100000987 absorbed dose Toxicity 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229920006125 amorphous polymer Polymers 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 229940087101 dibenzylidene sorbitol Drugs 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000004750 melt-blown nonwoven Substances 0.000 description 1
- 238000000386 microscopy Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920005629 polypropylene homopolymer Polymers 0.000 description 1
- 229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000004736 wide-angle X-ray diffraction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
-
- 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
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
-
- 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
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
-
- 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
- D04H3/005—Synthetic yarns or filaments
-
- 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
-
- 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
- D04H3/16—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 filaments produced in association with filament formation, e.g. immediately following extrusion
-
- 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
- Y10T156/1015—Folding
Definitions
- meltblown nonwoven fibrous webs are used for a variety of purposes including filtration (e.g., flat web and pleated filters), insulation, padding and textile substitutes.
- Patents or applications relating to nonwoven webs or their manufacture include U.S. Patent Nos. 3,981,650 (Page), 4,100,324 (Anderson), 4,118,531 (Hauser), 4,818,464 (Lau), 4,931,355 (Radwanski et al), 4,988,560 (Meyer et al), 5,227,107 (Dickenson et al), 5,273,565 (Milligan et al.), 5,382,400 (Pike et al.
- Single-layer pleated filters products have been used in some applications.
- residential furnace filters have been made from a single layer of ACCU AIRTM bi-component spunbond media from Kimberley Clark.
- ACCUAIR media is insufficiently stiff for use as a single layer pleated HVAC filter intended to be subjected to the typical flow rates or pressures that may arise in commercial or industrial applications.
- the above- mentioned Sundet et al. '226 application describes pleated furnace filters made from a single layer of meltblown fibers (e.g., polypropylene, polyester or nylon fibers), a majority of which were aligned at 90° ⁇ 20° with respect to the pleat row direction.
- Fiberglass filtration media has also been employed as a single layer pleated filter, but fiberglass is uncharged, may have a high pressure drop, sheds glass fibers, and may be difficult to form into some shapes.
- the invention provides in one aspect a process for making a pleated filter comprising: a) forming a monocomponent monolayer nonwoven web of continuous monocomponent polymeric fibers by meltspinning, collecting, heating and quenching the monocomponent polymeric fibers under thermal conditions sufficient to form a web of partially crystalline and partially amorphous oriented meltspun fibers of the same polymeric composition that are bonded to form a coherent and handleable web having a Gurley Stiffness of at least 100 mg and which further may be softened while retaining orientation and fiber structure, b) forming rows of pleats in the nonwoven web, and c) cutting the pleated web to a desired size and shape to form a pleated filter element comprising a self-supporting porous monocomponent monolayer matrix of fibers bonded to one
- the term "monocomponent" when used with respect to a fiber or collection of fibers means fibers having essentially the same composition across their cross-section; monocomponent includes blends (viz., polymer alloys) or additive-containing materials, in which a continuous phase of uniform composition extends across the cross-section and over the length of the fiber.
- the term "size" when used with respect to a fiber means the fiber diameter for a fiber having a circular cross section, or the length of the longest cross-sectional chord that may be constructed across a fiber having a non-circular cross-section.
- the term "continuous" when used with respect to a fiber or collection of fibers means fibers having an essentially infinite aspect ratio (viz., a ratio of length to size of e.g., at least about 10,000 or more).
- amorphous-characterized phase has experienced a kind of cleansing or reduction of morphological structure that would lead to undesirable increases in crystallinity in conventional untreated fibers during a thermal bonding operation; e.g., the variety or distribution of morphological forms has been reduced, the morphological structure simplified, and a kind of segregation of the morphological structure into more discernible amorphous-characterized and crystallite- characterized phases has occurred.
- Heated air in the plenum is thus under an internal pressure within the plenum 103, and at the slot 109 it is further under the exhaust vacuum of the gas-withdrawal device 114.
- a perforated plate 111 may be positioned under the collector 19 to impose a kind of back pressure or flow-restriction means that contributes to spreading of the stream 110 of heated air in a desired uniformity over the width or heated area of the collected mass 20 and be inhibited in streaming through possible lower-density portions of the collected mass.
- Other useful flow-restriction means include screens or sintered plates.
- the number, size and density of openings in the plate 111 may be varied in different areas to achieve desired control. Large amounts of air pass through the fiber- forming apparatus and must be disposed of as the fibers reach the collector in the region 115. Sufficient air passes through the web and collector in the region 116 to hold the web in place under the various streams of processing air. Sufficient openness is needed in the plate under the heat-treating region 117 and quenching region 118 to allow treating air to pass through the web, while sufficient resistance remains to assure that the air is more evenly distributed.
- Additives may be added to the polymer to enhance the web's filtration performance, electret charging capability, mechanical properties, aging properties, coloration, surface properties or other characteristics of interest.
- Gurley Stiffness may be determined using a Model 4171 E GURLEYTM Bending Resistance Tester from Gurley Precision Instruments. Rectangular 3.8 cm x 5.1 cm rectangles are die cut from the webs with the sample long side aligned with the web transverse (cross-web) direction. The samples are loaded into the Bending Resistance Tester with the sample long side in the web holding clamp. The samples are flexed in both directions, viz., with the test arm pressed against the first major sample face and then against the second major sample face, and the average of the two measurements is recorded as the stiffness in milligrams. The test is treated as a destructive test and if further measurements are needed fresh samples are employed.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009522932A JP5362560B2 (en) | 2006-07-31 | 2007-07-19 | A pleated filter with a single-layer single-component meltspun medium |
KR1020097001977A KR101413336B1 (en) | 2006-07-31 | 2007-07-19 | Pleated filter with monolayer monocomponent meltspun media |
CA2659341A CA2659341C (en) | 2006-07-31 | 2007-07-19 | Pleated filter with monolayer monocomponent meltspun media |
EP07813107.5A EP2054135B1 (en) | 2006-07-31 | 2007-07-19 | Pleated filter with monolayer monocomponent meltspun media |
CN2007800287137A CN101495210B (en) | 2006-07-31 | 2007-07-19 | Pleated filter with monolayer monocomponent meltspun media |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/461,296 US7947142B2 (en) | 2006-07-31 | 2006-07-31 | Pleated filter with monolayer monocomponent meltspun media |
US11/461,296 | 2006-07-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008016788A1 true WO2008016788A1 (en) | 2008-02-07 |
Family
ID=38984728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2007/073882 WO2008016788A1 (en) | 2006-07-31 | 2007-07-19 | Pleated filter with monolayer monocomponent meltspun media |
Country Status (7)
Country | Link |
---|---|
US (2) | US7947142B2 (en) |
EP (1) | EP2054135B1 (en) |
JP (1) | JP5362560B2 (en) |
KR (1) | KR101413336B1 (en) |
CN (1) | CN101495210B (en) |
CA (1) | CA2659341C (en) |
WO (1) | WO2008016788A1 (en) |
Families Citing this family (73)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8513147B2 (en) * | 2003-06-19 | 2013-08-20 | Eastman Chemical Company | Nonwovens produced from multicomponent fibers |
US7892993B2 (en) | 2003-06-19 | 2011-02-22 | Eastman Chemical Company | Water-dispersible and multicomponent fibers from sulfopolyesters |
US20040260034A1 (en) | 2003-06-19 | 2004-12-23 | Haile William Alston | Water-dispersible fibers and fibrous articles |
US9770058B2 (en) * | 2006-07-17 | 2017-09-26 | 3M Innovative Properties Company | Flat-fold respirator with monocomponent filtration/stiffening monolayer |
US8802002B2 (en) * | 2006-12-28 | 2014-08-12 | 3M Innovative Properties Company | Dimensionally stable bonded nonwoven fibrous webs |
US7837756B2 (en) | 2007-04-05 | 2010-11-23 | Aaf-Mcquay Inc. | Filter with ePTFE and method of forming |
EP2242726B1 (en) * | 2007-12-31 | 2018-08-15 | 3M Innovative Properties Company | Fluid filtration articles and methods of making and using the same |
US7875787B2 (en) | 2008-02-01 | 2011-01-25 | Master Key, Llc | Apparatus and method for visualization of music using note extraction |
US8673040B2 (en) | 2008-06-13 | 2014-03-18 | Donaldson Company, Inc. | Filter construction for use with air in-take for gas turbine and methods |
US8850719B2 (en) | 2009-02-06 | 2014-10-07 | Nike, Inc. | Layered thermoplastic non-woven textile elements |
US9682512B2 (en) | 2009-02-06 | 2017-06-20 | Nike, Inc. | Methods of joining textiles and other elements incorporating a thermoplastic polymer material |
US20100199520A1 (en) * | 2009-02-06 | 2010-08-12 | Nike, Inc. | Textured Thermoplastic Non-Woven Elements |
US8906275B2 (en) | 2012-05-29 | 2014-12-09 | Nike, Inc. | Textured elements incorporating non-woven textile materials and methods for manufacturing the textured elements |
US20100199406A1 (en) | 2009-02-06 | 2010-08-12 | Nike, Inc. | Thermoplastic Non-Woven Textile Elements |
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Publication number | Publication date |
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US7947142B2 (en) | 2011-05-24 |
EP2054135A4 (en) | 2011-10-05 |
US20110185903A1 (en) | 2011-08-04 |
US8506669B2 (en) | 2013-08-13 |
CN101495210B (en) | 2012-01-04 |
CN101495210A (en) | 2009-07-29 |
CA2659341A1 (en) | 2008-02-07 |
EP2054135B1 (en) | 2016-05-18 |
JP2009545439A (en) | 2009-12-24 |
KR20090038441A (en) | 2009-04-20 |
KR101413336B1 (en) | 2014-06-27 |
EP2054135A1 (en) | 2009-05-06 |
JP5362560B2 (en) | 2013-12-11 |
CA2659341C (en) | 2014-09-16 |
US20080022642A1 (en) | 2008-01-31 |
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