WO2003060216A1 - Procédé et dispositif de production d'électret - Google Patents
Procédé et dispositif de production d'électret Download PDFInfo
- Publication number
- WO2003060216A1 WO2003060216A1 PCT/JP2003/000185 JP0300185W WO03060216A1 WO 2003060216 A1 WO2003060216 A1 WO 2003060216A1 JP 0300185 W JP0300185 W JP 0300185W WO 03060216 A1 WO03060216 A1 WO 03060216A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thermoplastic resin
- producing
- electret body
- electret
- droplets
- Prior art date
Links
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
- 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
- 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
-
- 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
-
- 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
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/01—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with hydrogen, water or heavy water; with hydrides of metals or complexes thereof; with boranes, diboranes, silanes, disilanes, phosphines, diphosphines, stibines, distibines, arsines, or diarsines or complexes thereof
- D06M11/05—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with hydrogen, water or heavy water; with hydrides of metals or complexes thereof; with boranes, diboranes, silanes, disilanes, phosphines, diphosphines, stibines, distibines, arsines, or diarsines or complexes thereof with water, e.g. steam; with heavy water
Definitions
- the present invention relates to a method and apparatus for manufacturing an electret body.
- the present invention relates to a method and an apparatus for manufacturing an electret body.
- non-woven fabric filter media have been used to remove dust and the like in gas. Since this non-woven fabric filter medium mainly removes dust and the like by brown diffusion, obstruction, and inertial collision due to physical action, reducing the diameter of the fibers that make up the non-woven fabric filter material can reduce smaller dust and the like. Since they can be captured and removed, the filtration efficiency can be increased. However, there has been a problem that the smaller the diameter of the fibers constituting the nonwoven fabric filter material, the greater the pressure loss and the shorter the life of the nonwoven fabric filter material.
- WO 0 1 Z 2 7 3 7 1 discloses that a sufficient amount of a polar liquid is sprayed on a non-conductive polymer before forming a fibrous web.
- a method and apparatus for charging individual fibers by subsequently accumulating to form a nonwoven web and subsequently drying '' is disclosed, wherein a polar liquid is directly sprayed on the individual fibers before forming the fiber web, By drying, electretization can be performed without applying an electric field.
- the charge amount can be increased, and further, no further electretization step is required after forming the nonwoven fabric web.
- the non-conductive polymer in order for the non-conductive polymer to be electretized, the non-conductive polymer needs to be wetted by the polar liquid, so that the drying step must be performed. Therefore, many to dry Great energy was needed.
- the inventor of the present invention has been diligently studying a method for solving the above-mentioned disadvantages of the prior art, and has found a method capable of manufacturing an electret body having a large amount of charge in a simple process that does not require a large amount of drying energy. I found it.
- the present invention is a method for producing an electret body by collecting and extruding a melt-extruded thermoplastic resin fiber after passing through a mist-like region which is substantially formed from droplets of a polar liquid.
- the present invention relates to a method for producing an electret body, characterized in that the fiber contains a charge-improving agent, and the average diameter of the droplets is less than 20 m.
- the amount of charge can be increased by passing the thermoplastic resin fiber that is melt-extruded and contains the charge-improving agent through the mist-like region composed of the polar liquid droplets. It has been found that if the average diameter of the droplets is less than 20 m, the thermoplastic resin fiber does not get wet, so that a drying step is unnecessary. It is considered that the reason why the thermoplastic resin fibers do not wet is that the surface tension increases because the droplets are small.
- a drying step is not performed after the thermoplastic resin fibers pass through the mist region.
- W p is the droplet ejection amount for creating a mist region per unit time per unit volume
- W f is the extrusion amount of the thermoplastic resin passing through the mist region per unit time.
- the charge amount can be increased by setting the percentage of the resin per droplet to 500 or more, that is, by increasing the amount of droplets in the mist region as compared with the amount of thermoplastic resin.
- the heat extruded Hot gas is blown against the plastic resin fibers.
- the thermoplastic resin is stretched and thinned, so that an electret body made of a resin fiber having a small diameter can be manufactured, and various performances are improved. For example, an electret body having a high filtration efficiency, an electret body having a good texture, an electret body having an excellent separation performance, or an electret body having an excellent shielding performance can be produced.
- the thermoplastic resin has a volume resistivity of at least 10 14 ⁇ ⁇ cm, more preferably at least 10 16 ⁇ 'cm. According to this aspect, the charge amount can be further increased.
- the polar liquid is water. According to this aspect, the manufacturing environment for the electret body is excellent.
- the charge improver is at least one selected from the group consisting of a hindered amine compound, a fatty acid metal salt, a metal oxide, and an unsaturated carboxylic acid-modified polymer compound.
- a hindered amine compound e.g., a hindered amine compound, a fatty acid metal salt, a metal oxide, and an unsaturated carboxylic acid-modified polymer compound.
- the charge amount can be particularly increased.
- the average diameter of the droplet is 15 m or less. According to this aspect, if the droplet ejection amount is the same, the number of droplets can be increased, so that the charge amount can be further increased.
- thermoplastic resin fiber by melt-extruding a thermoplastic resin containing a charge-improving agent
- thermoplastic resin fibers after passing through the mist region, and a device for manufacturing an electret body.
- FIG. 1 is a schematic sectional view of an apparatus for manufacturing an electret body according to the present invention.
- FIG. 1 is a schematic cross-sectional view of the apparatus for manufacturing an electret body of the present invention.
- the molten resin is extruded in a fibrous form from the melt extruder 10.
- This thermoplastic resin is supplied from a thermoplastic resin supply container (not shown) to the melt extruder 10. Since the chargeability improver is supplied from the chargeability improver supply means (not shown) to the thermoplastic resin supply container, the thermoplastic resin fiber 20 contains the chargeability improver. .
- the charge improver can be mixed before supplying the thermoplastic resin to the melt extruder 10, or the charge improver can be mixed after supplying the thermoplastic resin to the melt extruder 10. Can also.
- thermoplastic resin fiber 20 contains the charge improver
- the electret body 60 having a large charge amount can be manufactured according to the present invention.
- the thermoplastic resin fibers 20 are supplied to the mist region 30 composed of the polar liquid droplets 31 and pass through the mist region 30. When passing through the mist region 30, the thermoplastic resin fibers 20 are electretized.
- the average diameter of the droplets 31 of the polar liquid constituting the atomized region 30 is less than 20 ⁇ m, which may be due to the strong surface tension of the droplets 31 or the wetness of the thermoplastic resin fibers 20. There is no. Therefore, in the present invention, the step of drying the thermoplastic resin fibers 20 can be eliminated.
- the mist region 30 is formed by droplets 31 discharged from the droplet discharge device 40. If the droplet discharge amount is increased as compared with the extrusion amount of the thermoplastic resin fiber 20, an electret body 60 having a higher charge amount can be manufactured.
- the electretized thermoplastic resin fibers 21 are collected by a belt conveyor 50 arranged below the melt extruder 10 to form an electret body 60. Since the electret body 60 is not wet, it can be used as an electret body without going through a drying step, or can be supplied to a later step in order to adapt it to various uses.
- the thermoplastic resin that can be used in the present invention is melt extrudable. It is not particularly limited as long as it is possible, but it is preferable that the resin is made of a resin having a volume specific resistance of at least 10 14 ⁇ cm which can increase the charge amount. More preferably, it is composed of a resin having a diameter of at least 10 16 ⁇ ⁇ cm. The upper limit of the volume resistivity is not particularly limited.
- the “volume specific resistance value” in the present invention is the volume specific resistance value used in the insulation resistance test by the three-terminal method according to the “General thermosetting plastic test method” defined in JISK6911. A value obtained by measuring with a measuring device.
- polyolefin resin eg, polyethylene resin, polypropylene resin, polymethylpentene resin, or polystyrene resin
- polytetrafluoroethylene polyvinylidene chloride, polyvinyl chloride, or polyurethane And the like.
- polyolefin-based resins have particularly high volume resistivity, and are thermoplastic and have excellent workability, so they can be used favorably.
- polypropylene-based resins and polymethylpentene-based resins have high heat resistance. However, since it is excellent, it can be suitably used.
- the electret body can be charged more by adding a charge improver to the thermoplastic resin.
- the chargeability improver is not particularly limited as long as it contains the same to increase the charge amount of the electret body. That is, an electret body containing a certain substance is produced by the production method of the present invention in a case where the electret body does not contain a certain substance.
- the charge amount is larger than the charge amount of the container, the substance corresponds to the chargeability improver in the present invention.
- Preferred examples of the charge improver in the present invention include a hindered amine compound, a metal salt of a fatty acid (for example, a metal salt of a fatty acid having 10 to 30 carbon atoms, such as a magnesium salt of stearate or an aluminum salt of stearic acid, etc. ), Metal oxides (eg, titanium oxide, silicon dioxide, or natural minerals), unsaturated carboxylic acid-modifiable polymer compounds [eg, unsaturated carboxylic acids having 3 to 10 carbon atoms (eg, acrylic acid, (Methacrylic acid or maleic acid) modified with polyethylene, polypropylene or polystyrene]. These charge improvers may be used alone or in combination of two or more. Can also be. Among these, it is particularly preferable to include a hinderdamine-based compound capable of particularly increasing the charge amount.
- a hinderdamine-based compound capable of particularly increasing the charge amount.
- hindered amine compound examples include poly [ ⁇ (6- (1,1,3,3-tetramethylbutyl) imino 1,3,5-triazine-2,4-diyl) ⁇ (2,2,6,6 —Tetramethyl-4-piperidyl) imino 1-hexamethylene ⁇ (2,2,6,6-tetramethyl-14-piperidyl) imino ⁇ ], dimethyl succinate 1- (2-hydroxyethyl) 1-4-hydroxy-1 2 , 2, 6, 6-tetramethylpiperidine polycondensate, or 2- (3,5-di-t-butyl-14-hydroxybenzyl) -1-bis-n-butylmalonate (1,2,2 , 6, 6-pentamethyl-1-piperidyl) and the like.
- the content of such a charge improver is not particularly limited, it is 0.01 to 5 mass% of the total mass of the thermoplastic resin (total mass of the thermoplastic resin and the charge improver). Is preferred. If the content of the charge improver is less than 0.01 mass%, sufficient electrification tends not to be obtained, and the content is more preferably 0.05 ma ss% or more, and 0.1 ma ss% or more. Is more preferable. On the other hand, if the content of the chargeability improver exceeds 5 mass%, the mechanical strength of the electret body tends to decrease. The content of the charge improver is more preferably 4mass% or less, still more preferably 3mass% or less, and most preferably 2.5mass% or less.
- the thermoplastic resin containing the charge improver can be melted and extruded in a fiber form from a melt extrusion device.
- the thermoplastic resin fiber 20 may be simply extruded from the melt extruder 10, or may be extruded from the melt extruder 10 and then blown with a high-temperature gas, or An electric field may be applied after extruding from the melt extruder 10.
- the high-temperature gas is preferably sprayed before passing through the atomized region, and the electric field is preferably acted on before passing through the atomized region.
- a die conventionally known as a spun bond method can be used.
- a melt blow method A die known from the prior art can be used, after extruding from a melt extrusion device
- an electric field is applied to the device, for example, a device conventionally known as an electrospinning method can be used.
- an electret body having high filtration efficiency, an electret body having excellent texture, an electret body having excellent separation performance, or an electret body having excellent shielding performance can be manufactured.
- the temperature of the high-temperature gas is higher than the melting point of the thermoplastic resin, and the upper limit is a temperature at which the thermoplastic resin does not decompose.
- the amount of the high-temperature gas sprayed is not limited, but is preferably 5 to 2000 times the mass of the extruded thermoplastic resin. Further, the kind of gas is not particularly limited, but air is preferable for production.
- the thermoplastic resin fiber 20 melt-extruded from the melt-extrusion device 10 is formed into a relectret by passing through a mist region 30 composed of polar liquid droplets 31.
- the electric field may or may not be applied to the mist region, but the electret can be formed without applying the electric field.
- the polar liquid constituting the droplet is not particularly limited, and examples thereof include water, alcohol, acetone, and ammonia. These polar liquids can be used alone or in combination of two or more. Among these, it is preferable to use water (particularly water only) because of its excellent production environment.
- the step of drying the thermoplastic resin fiber can be omitted. If the average diameter of the droplets is less than 20 m, the reason why the thermoplastic fiber does not wet is unknown, but droplets with a small average diameter have a high surface tension, and as a result, wet the thermoplastic resin fiber. The inventor believes that it will disappear. Therefore, it is considered that if the surface tension is further increased, the tendency that the thermoplastic resin fibers are not wetted is further increased.Therefore, the average diameter of the droplets is preferably 15 m or less, and 12 jtm or less.
- the smaller the average diameter of the droplet the greater the effect on the thermoplastic resin fibers. Since the number of droplets that can be formed increases, it is considered that the charge amount can be increased.
- the lower limit of the average diameter of the droplet is not particularly limited, but is suitably about 0.1 im. When it is smaller than 0.1 jtm, the charge amount tends to decrease.
- the “average diameter of droplets” in the present invention refers to the value of Sauter's mean diameter obtained by measurement with a laser Doppler type particle size distribution analyzer.
- the mist region used in the method of the present invention is a region formed from floating droplets in which countless droplets are densely floating in a certain space, or preferably exists in a certain space.
- Countless droplets are areas formed from moving droplets moving in one direction or various directions, or are formed from floating droplets and moving droplets Can be an area.
- the mist region is formed by a conventionally known droplet discharge device, for example, a commercially available droplet discharge device, for example, AKIM ist (registered trademark; manufactured by Ikeuchi Co., Ltd.), AKIJ et (registered trademark; manufactured by Ikeuchi Co., Ltd.) ) Can be used.
- the thermoplastic resin fibers may pass through the mist region in any direction, but the thermoplastic resin fibers are heated in a direction orthogonal to the direction in which the droplet is ejected from the droplet discharge device. It is preferable to pass the plastic resin fiber. By passing through in this way, the charge amount can be further increased.
- the charge amount can be increased. This is probably because the number of droplets that can act on the thermoplastic resin fibers increases.
- the average diameter of the droplets is small, the number of droplets that can act on the thermoplastic resin fiber increases, so The amount can be increased.
- the upper limit of the percentage of resin per droplet is not particularly limited, but is preferably a percentage of resin per droplet that does not wet the thermoplastic resin fiber. The upper limit of the percentage of resin-droplets that is not hindered can be appropriately confirmed experimentally.
- the resin-one-droplet percentage is determined by the amount of extrusion from the melt extrusion device 10 as described above and the amount of ejection from the droplet ejection device 40 as described above. It can be achieved by appropriately adjusting.
- the number of droplet discharge devices used to form the mist region is not particularly limited. For example, as shown in FIG. 1, two droplet discharge devices 40 and 41 may be installed. Yes, but only one unit may be installed, or three or more units may be installed. When two or more units are installed, they can be operated under different conditions in terms of the average diameter of droplets, ejection amount, ejection speed, nature or type of polar liquid.
- the thermoplastic resin fiber 20 is re-electretized by passing through the above-mentioned mist-like region 30, and thus the heat-electrified heat is obtained.
- the electret body 60 can be manufactured by collecting the plastic resin fibers 21 on a suitable support (for example, a belt conveyor 50). Since the electret body 60 thus formed is not wet, a drying step can be omitted in the present invention after the thermoplastic resin fiber 20 has passed through the mist region. In the method of the present invention, “the drying step is unnecessary” means, for example, in the embodiment shown in FIG. 1, before or after collection of the thermoplastic resin fibers 21 converted into an electret.
- thermoplastic resin fibers 21 or electret bodies 60 are unnecessary.
- a separate drying means is applied after the thermoplastic resin fiber is passed through the mist region.
- an additional effect may be obtained because the drying step is unnecessary. For example, when drying by heat to increase productivity, the charge amount may decrease, but according to the present invention, such a bad effect does not occur.
- the collecting means is not particularly limited.
- a belt conveyor 50 or a roll can be used.
- the collecting means for example, a belt conveyor or a roll
- the collecting means can be used whether it is porous or non-porous.
- a suction device is provided below the collecting means (for example, a belt conveyor or a roll). By installing a device, it is possible to prevent the electret body from being disturbed by sucking the electretized thermoplastic resin fibers.
- the surface of the collecting means (for example, a belt conveyor or a roll) does not need to be flat or curved, and may have other three-dimensional shapes.
- thermoplastic resin fibers electretized along the shape can be collected. Can be omitted.
- a porous body or a non-porous body is arranged on the collecting means (for example, a belt conveyor or a roll), these materials and the electret body can be easily compounded.
- the porous body include a sheet (for example, a woven fabric, a knitted fabric, a non-woven fabric, a composite thereof, etc.), a porous film (for example, a perforated film, etc.), a foam, or a composite thereof.
- the non-porous material include a non-porous film.
- the form of the electret body of the present invention varies depending on the form of the thermoplastic resin fiber, for example, it may be in the form of a fiber aggregate or a film.
- the electret body is preferably made of a fiber aggregate, and is made of a melt-pro-fiber aggregate having a small diameter and excellent collection efficiency. Is particularly preferred.
- the electret body manufactured by the method for manufacturing an electret body of the present invention has a large charge amount, for example, a filter medium for a gas filter such as air, a filter medium for a liquid filter such as oil / water, It can be used for various applications such as filter materials for masks such as molded masks, wiping materials, materials for restoring or improving health for medical use, dust-proof clothing, and sound wave or vibration detection elements.
- the electret body of the present invention can be suitably used for the above-mentioned applications, but can be subjected to various post-processing so as to be suitable for various applications.
- an electret body is suitably used.
- When used as a filter material for a gas filter it is preferable to increase the filtration area by performing a fold processing.
- volume resistivity of polypropylene was greater than 1 0 14 ⁇ ⁇ cm. Then, the polypropylene pellets were blown with air at a temperature of 300 ° C. by 1,500 times the mass of the polypropylene using a conventional melt-producing apparatus to form melt-pro fibers.
- the liquid is ejected from a droplet discharge device [AK IM ist (registered trademark); Ikeuchi Co., Ltd.] downstream of the hot air blowing position in the spinning direction.
- a polypropylene pellet containing the hindered amine-based charge improver used in Example 1 in an amount of 3 mass% of the entire resin (including the charge improver) was prepared.
- the volume resistivity of this polypropylene was higher than 10 14 ⁇ ⁇ cm.
- the electret body was manufactured by repeating the operation described in Example 1 except that the average diameter of the water droplets discharged from the droplet discharge device was set to 30 m, but the melt blown fibers collected were extremely low. Since it was wet, a further drying step was required.
- An electret body was produced without repeating the drying step by repeating the operation described in Example 1 except that a polypropylene pellet containing no hindered amine-based charge improver was used.
- Example 2 By repeating the operation described in Example 1 except that a polypropylene pellet containing no hindered amine-based charge improver was used and that it did not pass through the mist region, the drying process was not performed. Produced a meltblown fiber web.
- the particle size of the electret body or the melt-blown fiber web of Example 1 and Example 2 and Comparative Example 2 and Comparative Example 3 was 0.3 to 0.5 m under the conditions of the air and the wind speed of 1 Om mZ seconds. Was measured for air dust collection efficiency. Table 1 shows the results.
- the melt-pro-fiber web of Comparative Example 1 was very wet when the collecting process was performed. The measurement could not be performed because a further drying step was required.
- the electret body having a large ⁇ value can be suitably used as a high-performance filtering material.
- the electret body with a large charge amount can be re-produced by the simple process which does not pass through a drying process.
- the charge amount can be further increased.
- thermoplastic resin fiber when a high-temperature gas is blown onto the melt-extruded thermoplastic resin fiber, the thermoplastic resin is stretched and thinned, so that an electret body made of a resin fiber having a small diameter can be produced. And improve various performances.
- volume resistivity 1 0 1 4 ⁇ ⁇ cm or higher especially when the body volume resistivity consist 1 0 1 6 ⁇ ⁇ cm or more thermoplastic resin fibers, the more charge quantity ⁇ Can be done.
- the environment for producing the electret body is excellent.
- the charge improver is at least one compound selected from the group consisting of a hindered amine compound, a fatty acid metal salt, a metal oxide, and an unsaturated carboxylic acid-modified polymer compound.
- the amount can be large.
- the average diameter of the droplets is 15 m or less, the number of droplets can be increased if the droplet ejection amount is the same, and the charge amount can be further increased.
- the electret body with many recharge amounts can be manufactured by the simple apparatus which does not have a drying means.
- the present invention has been described according to the specific embodiments. However, modifications and improvements obvious to those skilled in the art are included in the scope of the present invention.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03700545.1A EP1471176B1 (en) | 2002-01-11 | 2003-01-14 | Process for producing electret |
US10/501,265 US20050077646A1 (en) | 2002-01-11 | 2003-01-14 | Process for producing electret and production apparatus |
JP2003560291A JP4133830B2 (ja) | 2002-01-11 | 2003-01-14 | エレクトレット体の製造方法及び製造装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-005232 | 2002-01-11 | ||
JP2002005232 | 2002-01-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003060216A1 true WO2003060216A1 (fr) | 2003-07-24 |
Family
ID=19191083
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/000185 WO2003060216A1 (fr) | 2002-01-11 | 2003-01-14 | Procédé et dispositif de production d'électret |
Country Status (4)
Country | Link |
---|---|
US (1) | US20050077646A1 (ja) |
EP (1) | EP1471176B1 (ja) |
JP (1) | JP4133830B2 (ja) |
WO (1) | WO2003060216A1 (ja) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004066027A (ja) * | 2002-08-01 | 2004-03-04 | Toyobo Co Ltd | エレクトレット濾材の製造方法 |
JP2008221074A (ja) * | 2007-03-09 | 2008-09-25 | Toyobo Co Ltd | エレクトレット濾材およびその製造方法 |
JP2009533505A (ja) * | 2006-04-11 | 2009-09-17 | チバ ホールディング インコーポレーテッド | エレクトレット材 |
JP2011522137A (ja) * | 2008-06-02 | 2011-07-28 | スリーエム イノベイティブ プロパティズ カンパニー | ゼータ電位に基づくエレクトレット物品の作製方法 |
KR101307877B1 (ko) | 2008-09-16 | 2013-09-13 | 칼 프로이덴베르크 카게 | 일렉트렛 필터 소자 및 그 제조 방법 |
JP2013540904A (ja) * | 2010-08-23 | 2013-11-07 | ファイバーウェブ コロビン ゲーエムベーハー | エレクトレット特性を有する不織ウェブ及び繊維、その製造方法並びにその使用 |
JP2015112585A (ja) * | 2013-12-16 | 2015-06-22 | 三菱電機株式会社 | フィルタ帯電処理装置およびフィルタ帯電処理方法 |
WO2015125942A1 (ja) * | 2014-02-20 | 2015-08-27 | 日本無機株式会社 | エアフィルタ濾材、およびエアフィルタユニット |
JP2017048469A (ja) * | 2015-08-31 | 2017-03-09 | パナソニックIpマネジメント株式会社 | 不織布、空気清浄機、および不織布の製造方法 |
JPWO2016129615A1 (ja) * | 2015-02-11 | 2017-11-24 | 日本バイリーン株式会社 | 濾過材、それを用いたフィルタエレメント、及び濾過材の製造方法 |
WO2021033700A1 (ja) * | 2019-08-21 | 2021-02-25 | 東洋紡株式会社 | エレクトレット及びそれを用いたフィルター |
WO2023167053A1 (ja) * | 2022-03-03 | 2023-09-07 | 東レ株式会社 | エレクトレットメルトブロー不織布、および、これを用いてなるエアフィルター濾材 |
WO2023167057A1 (ja) * | 2022-03-03 | 2023-09-07 | 東レ株式会社 | エレクトレットメルトブロー不織布の製造方法および製造装置 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BRPI0909959B1 (pt) * | 2008-06-02 | 2018-11-13 | 3M Innovative Properties Co | manta de eletreto e meio de filtro à base de eletreto |
KR102528865B1 (ko) * | 2014-12-26 | 2023-05-04 | 도레이 카부시키가이샤 | 방호복 |
EP4074874B1 (en) | 2018-11-30 | 2024-01-03 | The Procter & Gamble Company | Methods for producing through-fluid bonded nonwoven webs |
WO2020107422A1 (en) | 2018-11-30 | 2020-06-04 | The Procter & Gamble Company | Methods of creating soft and lofty nonwoven webs |
CN114173904A (zh) * | 2019-06-28 | 2022-03-11 | 3M创新有限公司 | 过滤器组件、预过滤器组件和包括它们的呼吸器 |
CN111560137B (zh) * | 2020-05-28 | 2020-10-16 | 金发科技股份有限公司 | 一种用于口罩熔喷无纺布的驻极母粒及其制备方法与应用 |
CN112778632B (zh) * | 2020-12-28 | 2022-09-13 | 银禧工程塑料(东莞)有限公司 | 长效熔喷聚丙烯驻极母粒及其制备方法和熔喷无纺布 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001027371A1 (en) * | 1999-10-08 | 2001-04-19 | 3M Innovative Properties Company | Method and apparatus for making a nonwoven fibrous electret web from free-fiber and polar liquid |
JP2002161467A (ja) * | 2000-11-28 | 2002-06-04 | Toray Ind Inc | エレクトレット加工品の製造方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4581675A (en) * | 1980-09-02 | 1986-04-08 | Exxon Research And Engineering Co. | Electrostatic atomizing device |
JPH0729771B2 (ja) * | 1986-01-14 | 1995-04-05 | 悦朗 加藤 | 単斜ジルコニア超微結晶の高分散ゾルまたはゲルおよび製造方法 |
US5004711A (en) * | 1987-12-09 | 1991-04-02 | Harshaw/Filtrol Partnership | Process of producing colloidal zirconia sols and powders using an ion exchange resin |
US4880578A (en) * | 1988-08-08 | 1989-11-14 | The United States Of America As Represented By The United States Department Of Energy | Method for heat treating and sintering metal oxides with microwave radiation |
US5275759A (en) * | 1989-02-10 | 1994-01-04 | Nippon Shokubai Kagaku Kogyo Co., Ltd. | Zirconia sol, method for production thereof, porous ceramic-producing slurry, and porous ceramic product obtained by use thereof |
DE4034786A1 (de) * | 1990-11-02 | 1992-05-07 | Merck Patent Gmbh | Verfahren und vorrichtung zur herstellung von pulverfoermigen metalloxiden fuer keramische massen |
EP0714463B1 (en) * | 1993-08-17 | 1999-03-10 | Minnesota Mining And Manufacturing Company | Method of charging electret filter media |
US5908598A (en) * | 1995-08-14 | 1999-06-01 | Minnesota Mining And Manufacturing Company | Fibrous webs having enhanced electret properties |
US5665278A (en) * | 1996-01-17 | 1997-09-09 | J & M Laboratories, Inc. | Airless quench method and apparatus for meltblowing |
DE69841614D1 (de) * | 1997-06-20 | 2010-05-27 | Univ New York | Elektrosprühen von lösungen zur massenherstellung von chips und molekülbibliotheken |
-
2003
- 2003-01-14 US US10/501,265 patent/US20050077646A1/en not_active Abandoned
- 2003-01-14 EP EP03700545.1A patent/EP1471176B1/en not_active Expired - Lifetime
- 2003-01-14 JP JP2003560291A patent/JP4133830B2/ja not_active Expired - Fee Related
- 2003-01-14 WO PCT/JP2003/000185 patent/WO2003060216A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001027371A1 (en) * | 1999-10-08 | 2001-04-19 | 3M Innovative Properties Company | Method and apparatus for making a nonwoven fibrous electret web from free-fiber and polar liquid |
JP2002161467A (ja) * | 2000-11-28 | 2002-06-04 | Toray Ind Inc | エレクトレット加工品の製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1471176A4 * |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004066027A (ja) * | 2002-08-01 | 2004-03-04 | Toyobo Co Ltd | エレクトレット濾材の製造方法 |
JP2009533505A (ja) * | 2006-04-11 | 2009-09-17 | チバ ホールディング インコーポレーテッド | エレクトレット材 |
JP2008221074A (ja) * | 2007-03-09 | 2008-09-25 | Toyobo Co Ltd | エレクトレット濾材およびその製造方法 |
JP2011522137A (ja) * | 2008-06-02 | 2011-07-28 | スリーエム イノベイティブ プロパティズ カンパニー | ゼータ電位に基づくエレクトレット物品の作製方法 |
KR101307877B1 (ko) | 2008-09-16 | 2013-09-13 | 칼 프로이덴베르크 카게 | 일렉트렛 필터 소자 및 그 제조 방법 |
JP2013540904A (ja) * | 2010-08-23 | 2013-11-07 | ファイバーウェブ コロビン ゲーエムベーハー | エレクトレット特性を有する不織ウェブ及び繊維、その製造方法並びにその使用 |
JP2015112585A (ja) * | 2013-12-16 | 2015-06-22 | 三菱電機株式会社 | フィルタ帯電処理装置およびフィルタ帯電処理方法 |
WO2015125942A1 (ja) * | 2014-02-20 | 2015-08-27 | 日本無機株式会社 | エアフィルタ濾材、およびエアフィルタユニット |
JPWO2015125942A1 (ja) * | 2014-02-20 | 2017-03-30 | 日本無機株式会社 | エアフィルタ濾材、およびエアフィルタユニット |
JPWO2016129615A1 (ja) * | 2015-02-11 | 2017-11-24 | 日本バイリーン株式会社 | 濾過材、それを用いたフィルタエレメント、及び濾過材の製造方法 |
JP2017048469A (ja) * | 2015-08-31 | 2017-03-09 | パナソニックIpマネジメント株式会社 | 不織布、空気清浄機、および不織布の製造方法 |
WO2021033700A1 (ja) * | 2019-08-21 | 2021-02-25 | 東洋紡株式会社 | エレクトレット及びそれを用いたフィルター |
WO2023167053A1 (ja) * | 2022-03-03 | 2023-09-07 | 東レ株式会社 | エレクトレットメルトブロー不織布、および、これを用いてなるエアフィルター濾材 |
WO2023167057A1 (ja) * | 2022-03-03 | 2023-09-07 | 東レ株式会社 | エレクトレットメルトブロー不織布の製造方法および製造装置 |
JP7359327B1 (ja) | 2022-03-03 | 2023-10-11 | 東レ株式会社 | エレクトレットメルトブロー不織布の製造方法および製造装置 |
JP7416330B1 (ja) | 2022-03-03 | 2024-01-17 | 東レ株式会社 | エレクトレットメルトブロー不織布、および、これを用いてなるエアフィルター濾材 |
Also Published As
Publication number | Publication date |
---|---|
JP4133830B2 (ja) | 2008-08-13 |
EP1471176A1 (en) | 2004-10-27 |
US20050077646A1 (en) | 2005-04-14 |
JPWO2003060216A1 (ja) | 2005-05-19 |
EP1471176A4 (en) | 2005-05-11 |
EP1471176B1 (en) | 2016-03-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2003060216A1 (fr) | Procédé et dispositif de production d'électret | |
JP6346640B2 (ja) | エレクトレット特性を有する不織ウェブ及び繊維、その製造方法並びにその使用 | |
JP5819832B2 (ja) | ナノ繊維ウェブを形成するためのノズル、装置、システム及び方法、並びにこの方法によって作製される物品 | |
KR101281864B1 (ko) | 기체 스트림으로부터 미립자 물질을 여과하기 위한 여과매질 | |
JP5696919B2 (ja) | ナノウェブとスクリムの耐久性積層物 | |
JP4209734B2 (ja) | 不織布及びその製造方法 | |
US9186608B2 (en) | Process for forming a high efficiency nanofiber filter | |
JP2011508113A (ja) | 複合不織布ウェブ並びにこれの製造及び使用方法 | |
EP3265204A1 (en) | Composite filter media including a nanofiber layer formed directly onto a conductive layer | |
JPWO2013080955A1 (ja) | 混繊不織布とこれを用いてなる濾材 | |
JP4905661B2 (ja) | フィルター用繊維積層体 | |
JP4069057B2 (ja) | 高性能エアフィルタ | |
JP7177394B2 (ja) | 複合構造体、その製造方法及びその複合構造体を含む濾材 | |
JP2007152216A (ja) | フィルター用不織布 | |
JP2017113670A (ja) | エアフィルター用濾材およびエアフィルター | |
JP7299316B2 (ja) | メルトブロー不織布、フィルター、及びメルトブロー不織布の製造方法 | |
JP2010121241A (ja) | フィルター用不織布 | |
JP5946894B2 (ja) | ナノファイバーを用いたフィルター | |
JP4737039B2 (ja) | 吸気用フィルター不織布 | |
JP6508630B2 (ja) | 積層不織布の製造装置 | |
WO2012051056A1 (en) | Highly uniform spunbonded nonwoven fabrics | |
JP2005131484A (ja) | 洗浄可能フィルタ | |
JP2007160137A (ja) | エレクトレット濾過材 | |
JP2008088610A (ja) | 極細短繊維分散不織布及びその製造方法 | |
JP4906675B2 (ja) | エアフィルター用不織布および空気清浄用フィルター |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): JP PL US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT SE SI SK TR |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 10501265 Country of ref document: US Ref document number: 2003560291 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003700545 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2003700545 Country of ref document: EP |