WO2013014826A1 - Procédé de formation de plis dans un élément de filtration et dispositif de formation de plis - Google Patents

Procédé de formation de plis dans un élément de filtration et dispositif de formation de plis Download PDF

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Publication number
WO2013014826A1
WO2013014826A1 PCT/JP2012/002292 JP2012002292W WO2013014826A1 WO 2013014826 A1 WO2013014826 A1 WO 2013014826A1 JP 2012002292 W JP2012002292 W JP 2012002292W WO 2013014826 A1 WO2013014826 A1 WO 2013014826A1
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WO
WIPO (PCT)
Prior art keywords
filter medium
pleating
blades
pair
filtering member
Prior art date
Application number
PCT/JP2012/002292
Other languages
English (en)
Japanese (ja)
Inventor
隆利 川本
将明 森
Original Assignee
日東電工株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 日東電工株式会社 filed Critical 日東電工株式会社
Priority to CN201280024530.9A priority Critical patent/CN103547351B/zh
Publication of WO2013014826A1 publication Critical patent/WO2013014826A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D5/00—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles
    • B31D5/0082—Making filter elements, e.g. pleated
    • 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
    • B01D39/1692—Other shaped material, e.g. perforated or porous sheets
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06J—PLEATING, KILTING OR GOFFERING TEXTILE FABRICS OR WEARING APPAREL
    • D06J1/00—Pleating, kilting or goffering textile fabrics or wearing apparel
    • D06J1/02—Pleating, kilting or goffering textile fabrics or wearing apparel continuously and transversely to the direction of feed
    • D06J1/06—Pleating, kilting or goffering textile fabrics or wearing apparel continuously and transversely to the direction of feed by reciprocating blades
    • 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
    • B01D2239/06—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

Definitions

  • the present invention relates to a filter filter medium pleating method and a pleating apparatus.
  • an air filter unit including a filter medium for allowing air to pass through and collecting suspended fine particles is used.
  • a filter medium a filter medium having a high collection efficiency such as a HEPA (High Efficiency Particulate Air) grade or ULPA (Ultra Low Penetration Air) grade is used.
  • Patent Document 1 discloses a pleating apparatus 500 including a pleating machine 520 as shown in FIG.
  • the pleating machine 520 presses the pair of blades 521 from both sides in the thickness direction against the filter medium 510 to pleat the filter medium 510.
  • the filter medium one containing a polytetrafluoroethylene (PTFE) porous membrane is preferably used.
  • PTFE porous membrane is easily charged with static electricity, and when the static electricity is discharged, a pinhole is formed in the PTFE porous membrane, and leakage occurs during use.
  • the static eliminator 530 is disposed between the pleating machine 520 and the feeding roll and on the downstream side of the pleating machine 520, and the surface of the filter medium 510 is disposed. Air that is ionized is being blown.
  • an object of the present invention is to provide a filter filter medium pleating method and a pleating device that can prevent the formation of pinholes due to electric discharge.
  • the inventors of the present invention have supplied the filter media to the pleating machine even after static electricity has been removed as a factor that causes pinholes due to discharge in the filter media during pleating. It has been determined that there is a risk of static electricity being charged by contact with a transport roller or table, and that the pleating machine blade is also charged with static electricity.
  • the reason why static electricity is also charged on the blade of the pleating machine is that the blade is usually made of metal, but its surface is coated with a fluororesin or the like so as not to damage the filter medium.
  • the present invention has been made from such a viewpoint.
  • the filter medium when the filter medium is pleated by pressing a pair of blades from both sides in the thickness direction against the filter medium, the end face of the filter medium and the pair of the filter medium are electrostatically removed from the side of the filter medium.
  • a method for pleating a filter medium which blows ionized air toward the blade of the filter.
  • the present invention provides a reciprocating pleating machine for pleating the filter medium by pressing a pair of blades from both sides in the thickness direction to the filter medium, and an end face of the filter medium and the end face of the filter medium on the side of the pleat machine
  • a pleating apparatus comprising: a static eliminator arranged to blow ionized air toward a pair of blades.
  • FIG. 1 shows a pleating apparatus 100 according to an embodiment of the present invention.
  • the pleating apparatus 100 is for continuously producing a pleated product 11 having a predetermined size from a band-shaped filter medium 10.
  • the filter medium 10 is supplied to the pleating machine 50 from the feed roll 1 formed by winding the filter medium 10.
  • a conveying roller 2 is disposed at an appropriate position, and a dancing roller 21 for applying tension to the filter medium 10 is disposed between the specific conveying rollers 2.
  • a perforation cutter 3 for forming a perforation according to the size of the pleated product 11 on the filter medium 10 is provided above the conveyance roller 2 on the most downstream side.
  • the pleating machine 50 is of a reciprocating type that reciprocates a pair of blades 5 in the thickness direction of the filter medium 10 (vertical direction in this embodiment). Then, the pleating machine 50 presses the pair of blades 5 from both sides in the thickness direction against the supplied filter medium 10 to pleat the filter medium 10.
  • the pleated filter medium 10 is heated by the heater 4 arranged so as to sandwich the filter medium 10 up and down, and then shaped by the back pressure 6. Finally, the filter medium 10 is cut along the perforations formed by the perforation cutter 3 by the cross cutter 7.
  • the filter medium 10 has a trapping efficiency of 50% or more (preferably 90% or more) of particles having a particle diameter of 0.1 ⁇ m or more and a pressure loss under the condition that the filter medium permeation speed is 5.3 cm / sec.
  • a filter medium having a pressure of 20 Pa or more (preferably 50 Pa or more) and 500 Pa or less is suitably used for the air filter unit.
  • the filter medium 10 is a laminate of a PTFE porous membrane and a breathable support material.
  • the PTFE porous membrane is produced, for example, as follows. First, a mixture obtained by adding a liquid lubricant to PTFE fine powder is molded into a sheet shape extending in a predetermined direction by at least one of an extrusion method and a rolling method to obtain a sheet-like molded body. Next, the liquid lubricant is removed from the sheet-shaped molded body by a heating method or an extraction method, and the sheet-shaped molded body is dried. Thereafter, the sheet-like molded body from which the liquid lubricant has been removed is stretched in the longitudinal direction and the width direction.
  • the PTFE porous membrane may be subjected to an oil repellent treatment.
  • This oil repellent treatment can be performed, for example, by applying an oil repellent containing a substance having a small surface tension to the PTFE porous membrane and drying it.
  • the air-permeable support material plays a role of ensuring the strength of the filter medium 10.
  • the material, structure, and form of the breathable support material are not particularly limited, but the breathable support material is a material that is more breathable than the PTFE porous membrane, such as a nonwoven fabric or a mesh (mesh net). Other porous materials can be used. However, non-woven fabric is preferred from the viewpoint of strength, catchability, flexibility, and workability.
  • Examples of the material of the breathable support material include polyolefin (polyethylene (PE), polypropylene (PP), etc.), polyamide, polyester (polyethylene terephthalate (PET), etc.), aromatic polyamide, or a composite material thereof. Can be used.
  • the method for joining the PTFE porous membrane and the breathable support material is not particularly limited, and methods such as adhesive lamination, thermal lamination, heat welding, ultrasonic welding, and adhesion using an adhesive can be used. .
  • the pleating apparatus 100 employs a configuration for preventing the formation of pinholes due to discharge in the filter medium 10 during pleating.
  • a static eliminator 30 is disposed on the side of the pleating machine 50.
  • the static eliminator 30 is arranged on both sides of the pleating machine 50, but the static eliminator 30 may be arranged only on one side of the pleating machine 50 depending on the width of the filter medium 10.
  • the static eliminator 30 blows ionized air so that the air strikes the blade 5 directly toward the end face in the width direction of the filter medium 10 and the pair of blades 5. Since the ionized air contains cations and anions, it is optimal for preventing electrostatic discharge between the filter medium 10 and the blade 5.
  • the static eliminator 30 preferably blows ionized air at all times.
  • the electrostatic discharge occurs when the blade 5 approaches the filter medium 10 to some extent, but this state is not only when the blade 5 away from the filter medium 10 approaches the filter medium 10 (that is, the tip of the blade 5). And discharge between the filter medium 10) and the blade 5 is generated while the filter medium 10 is being pushed in (that is, discharge between the side surface of the blade 5 and the filter medium 10).
  • Example 1 As a filter medium, under the condition that the filter medium permeation wind speed is 5.3 cm / sec, the collection efficiency of particles having a particle diameter of 0.1 ⁇ m or more is 99.9999% or more and the pressure loss is 50 Pa or more and 500 Pa or less. A filter medium suitable for the air filter unit was prepared.
  • a filter is used while blowing ionized air from the side of the filter medium to the end face of the filter medium and the pair of blades from the static eliminator.
  • the filter medium was pleated to produce 10 samples as pleated products.
  • the pleating conditions were a folding speed of 62 peaks / min and a temperature of a heater disposed behind the blade of 80 ° C.
  • an ion jet nozzle MODEL ⁇ NIH-55 manufactured by Kasuga Electric was used.
  • Example 1 Ten samples were produced in the same manner as in Example 1 except that the position of the static eliminator was changed to the upstream side of the pleating machine so that the ionized air was blown from above with the surface of the filter medium facing.
  • the transmittance (%) was obtained from the expression “100-collection efficiency (%)”, and “ ⁇ Log (transmittance (%) / 100)”
  • the evaluation value was obtained from the formula. That is, the higher the evaluation value, the higher the collection efficiency.
  • the evaluation value of the filter medium before pleating was 7.08.
  • Table 1 shows the results of the presence or absence of leaks and the evaluation values.
  • Example 1 the collection efficiency was higher than that in Comparative Example 1. The reason for this is considered to be that the generation of minute pinholes is suppressed.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Filtering Materials (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

La présente invention concerne un procédé de formation de plis dans un élément de filtration, selon lequel des plis sont formés dans un élément de filtration (10) en plaçant une paire de lames (5) contre l'élément de filtration (10) des deux côtés dans la direction de la largeur, en injectant de l'air ionisé sur la surface de bord de l'élément de filtration (10) et vers la paire de lames (5) par un dispositif d'élimination de l'électricité statique (30) depuis un côté de l'élément de filtration (10). De préférence, l'élément de filtration (10) comprend un film poreux en polytétrafluoroéthylène et un élément support perméable.
PCT/JP2012/002292 2011-07-28 2012-04-02 Procédé de formation de plis dans un élément de filtration et dispositif de formation de plis WO2013014826A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201280024530.9A CN103547351B (zh) 2011-07-28 2012-04-02 过滤器滤材的褶裥加工方法及褶裥加工装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011165215A JP5839547B2 (ja) 2011-07-28 2011-07-28 フィルタ濾材のプリーツ加工方法およびプリーツ加工装置
JP2011-165215 2011-07-28

Publications (1)

Publication Number Publication Date
WO2013014826A1 true WO2013014826A1 (fr) 2013-01-31

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PCT/JP2012/002292 WO2013014826A1 (fr) 2011-07-28 2012-04-02 Procédé de formation de plis dans un élément de filtration et dispositif de formation de plis

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JP (1) JP5839547B2 (fr)
CN (1) CN103547351B (fr)
TW (1) TWI569951B (fr)
WO (1) WO2013014826A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106273671A (zh) * 2016-10-27 2017-01-04 东莞市盛联滤清器制造有限公司 一种推叠式叠纸设备及成型工艺
WO2017123822A1 (fr) 2016-01-12 2017-07-20 Bioelectron Technology Corporation Dérivés de tocophérol et de tocotriénol quinone pour augmenter les niveaux de thiosulfate ou réduire les niveaux de sulfure d'hydrogène

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6185735B2 (ja) * 2013-03-28 2017-08-23 日東電工株式会社 フィルタ濾材の製造装置
CN105214383B (zh) * 2014-05-30 2019-09-27 日本无机株式会社 滤材及其褶皱加工方法、和空气净化器用空气过滤器
CN107376511B (zh) * 2017-08-24 2023-05-12 联合滤洁流体过滤与分离技术（北京）有限公司 一种水过滤材料斜褶打褶机
CN107639885A (zh) * 2017-10-30 2018-01-30 天津远达滤清器股份有限公司 一种滤清器过滤纸的折纸定型装置
CN113272038B (zh) * 2018-12-28 2023-06-06 日东电工株式会社 过滤器褶裥组件和空气过滤器单元
JP2020108884A (ja) * 2018-12-28 2020-07-16 日東電工株式会社 フィルタプリーツパック及びエアフィルタユニット
CN112516684A (zh) * 2020-10-22 2021-03-19 九江七所精密机电科技有限公司 一种滤材无损成褶工艺

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JP2002273126A (ja) * 2001-03-16 2002-09-24 Nitto Denko Corp エアフィルタ用濾材およびその製造方法
JP2002346320A (ja) * 2001-05-24 2002-12-03 Daikin Ind Ltd フィルタ濾材、フィルタパック及びエアフィルタユニットの製造方法
JP2006196255A (ja) * 2005-01-12 2006-07-27 Toray Ind Inc シートの放電処理装置および放電処理方法、ならびに多孔ポリエステルフィルム。
JP2007103205A (ja) * 2005-10-05 2007-04-19 Kasuga Electric Works Ltd フィルム等の長尺処理対象物の表面処理装置
JP2010073496A (ja) * 2008-09-18 2010-04-02 Hitachi Plant Technologies Ltd 除電装置

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CN1067291C (zh) * 1992-11-06 2001-06-20 帕尔公司 过滤器
EP1236494B1 (fr) * 2001-03-02 2003-10-15 Airflo Europe N.V. Filtre composite et procédé de fabrication
JP4791049B2 (ja) * 2005-02-16 2011-10-12 ニチアス株式会社 エアフィルタ用シート及びその製造方法並びにエアフィルタ
CN101210404B (zh) * 2006-12-25 2011-04-27 王金夫 燃油滤纸及其生产工艺

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002273126A (ja) * 2001-03-16 2002-09-24 Nitto Denko Corp エアフィルタ用濾材およびその製造方法
JP2002346320A (ja) * 2001-05-24 2002-12-03 Daikin Ind Ltd フィルタ濾材、フィルタパック及びエアフィルタユニットの製造方法
JP2006196255A (ja) * 2005-01-12 2006-07-27 Toray Ind Inc シートの放電処理装置および放電処理方法、ならびに多孔ポリエステルフィルム。
JP2007103205A (ja) * 2005-10-05 2007-04-19 Kasuga Electric Works Ltd フィルム等の長尺処理対象物の表面処理装置
JP2010073496A (ja) * 2008-09-18 2010-04-02 Hitachi Plant Technologies Ltd 除電装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017123822A1 (fr) 2016-01-12 2017-07-20 Bioelectron Technology Corporation Dérivés de tocophérol et de tocotriénol quinone pour augmenter les niveaux de thiosulfate ou réduire les niveaux de sulfure d'hydrogène
CN106273671A (zh) * 2016-10-27 2017-01-04 东莞市盛联滤清器制造有限公司 一种推叠式叠纸设备及成型工艺

Also Published As

Publication number Publication date
TWI569951B (zh) 2017-02-11
JP2013028873A (ja) 2013-02-07
CN103547351B (zh) 2017-02-15
CN103547351A (zh) 2014-01-29
JP5839547B2 (ja) 2016-01-06
TW201304946A (zh) 2013-02-01

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