JP5839547B2 - Filter filter medium pleating method and pleating apparatus - Google Patents

Filter filter medium pleating method and pleating apparatus Download PDF

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JP5839547B2
JP5839547B2 JP2011165215A JP2011165215A JP5839547B2 JP 5839547 B2 JP5839547 B2 JP 5839547B2 JP 2011165215 A JP2011165215 A JP 2011165215A JP 2011165215 A JP2011165215 A JP 2011165215A JP 5839547 B2 JP5839547 B2 JP 5839547B2
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filter medium
pleating
filter
pair
blades
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JP2013028873A (en
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隆利 川本
隆利 川本
将明 森
将明 森
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Nitto Denko Corp
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Nitto Denko Corp
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Priority to PCT/JP2012/002292 priority patent/WO2013014826A1/en
Priority to TW101112208A priority patent/TWI569951B/en
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    • 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

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

Description

本発明は、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に関する。   The present invention relates to a filter filter medium pleating method and a pleating apparatus.

クリーンルームや半導体製造装置等では、空気を透過させて浮遊微粒子を捕集するためのフィルタ濾材を備えたエアフィルタユニットが用いられている。そのようなフィルタ濾材としては、ＨＥＰＡ（High Efficiency Particulate Air）グレードやＵＬＰＡ（Ultra Low Penetration Air）グレード等の高い捕集効率を有するフィルタ濾材が用いられる。   In a clean room, a semiconductor manufacturing apparatus, or the like, an air filter unit including a filter medium for allowing air to permeate and collect suspended particulates is used. As such a filter medium, a filter medium having a high collection efficiency such as HEPA (High Efficiency Particulate Air) grade or ULPA (Ultra Low Penetration Air) grade is used.

フィルタ濾材は、通常、プリーツ加工されることにより蛇腹状に折り返されている。例えば、特許文献１には、図３に示すような、プリーツ機５２０を備えたプリーツ加工装置５００が開示されている。プリーツ機５２０は、フィルタ濾材５１０に厚み方向の両側から一対のブレード５２１を押し当ててフィルタ濾材５１０をプリーツ加工する。   The filter medium is usually folded in a bellows shape by pleating. For example, 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.

フィルタ濾材としては、ポリテトラフルオロエチレン（ＰＴＦＥ）多孔質膜を含むものが好適に用いられる。しかしながら、ＰＴＦＥ多孔質膜は静電気を帯電しやすく、静電気が放電されるとＰＴＦＥ多孔質膜にピンホールが形成されて使用時にリークが発生する。これを防止するために、特許文献１に開示されたプリーツ加工装置５００では、プリーツ機５２０と繰り出しロールの間およびプリーツ機５２０の下流側に静電気除去器５３０を配置し、フィルタ濾材５１０の表面に向かってイオン化された空気を送風している。   As the filter medium, a filter medium including a polytetrafluoroethylene (PTFE) porous membrane is preferably used. However, the 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. In order to prevent this, in the pleating apparatus 500 disclosed in Patent Document 1, 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.

特開２００２−３４５３２０号公報JP 2002-345320 A

しかしながら、図３に示すように静電気除去器５３０を配置したとしても、プリーツ加工後にフィルタ濾材５１０に放電によるピンホールが確認されることがある。   However, even if the static eliminator 530 is arranged as shown in FIG. 3, pinholes due to discharge may be confirmed in the filter medium 510 after pleating.

本発明は、このような事情に鑑み、放電によるピンホールの形成を防止することができる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を提供することを目的とする。   In view of such circumstances, 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.

前記課題を解決するために、本発明の発明者らは、鋭意研究の結果、プリーツ加工時にフィルタ濾材に放電によるピンホールが形成される要因として、フィルタ濾材が静電気除去後でもプリーツ機に供給される前に搬送用のローラやテーブルなどとの接触により静電気を帯電するおそれがあることと、プリーツ機のブレードにも静電気が帯電することを特定した。プリーツ機のブレードにも静電気が帯電する理由は、ブレードは通常は金属で構成されるが、フィルタ濾材を傷めないようにその表面がフッ素樹脂等によりコーティングされるからである。本発明は、このような観点からなされたものである。   In order to solve the above-mentioned problems, the inventors of the present invention, as a result of intensive research, 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.

すなわち、本発明は、フィルタ濾材に厚み方向の両側から一対のブレードを押し当てて前記フィルタ濾材をプリーツ加工する際に、前記フィルタ濾材の側方から静電気除去器により前記フィルタ濾材の端面および前記一対のブレードに向かってイオン化された空気を送風する、フィルタ濾材のプリーツ加工方法を提供する。   That is, according to the present invention, 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.

また、本発明は、フィルタ濾材に厚み方向の両側から一対のブレードを押し当てて前記フィルタ濾材をプリーツ加工するレシプロ式のプリーツ機と、前記プリーツ機の側方に、前記フィルタ濾材の端面および前記一対のブレードに向かってイオン化された空気を送風するように配置された静電気除去器と、を備えた、プリーツ加工装置を提供する。   Further, 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.

上記の構成によれば、放電によるフィルタ濾材へのピンホールの形成を防止することができる。   According to said structure, formation of the pinhole to the filter medium by discharge can be prevented.

本発明の一実施形態に係るプリーツ加工装置の構成図The block diagram of the pleating apparatus which concerns on one Embodiment of this invention 図１に示すプリーツ加工装置のプリーツ機付近の構成を示す断面図Sectional drawing which shows the structure of the pleating machine vicinity of the pleating apparatus shown in FIG. 従来のプリーツ加工装置の構成図Configuration diagram of conventional pleating device

以下、添付の図面を参照しつつ本発明の実施形態について説明する。なお、以下の説明は本発明の一例に関するものであり、本発明はこれらによって限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following description relates to an example of the present invention, and the present invention is not limited to these.

図１に、本発明の一実施形態に係るプリーツ加工装置１００を示す。このプリーツ加工装置１００は、帯状のフィルタ濾材１０から所定の大きさのプリーツ製品１１を連続的に製造するためのものである。   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.

具体的に、フィルタ濾材１０は、当該フィルタ濾材１０が巻き回されることにより形成された繰り出しロール１からプリーツ機５０に供給される。繰り出しロール１とプリーツ機５０の間には、適所に搬送ローラ２が配置されており、特定の搬送ローラ２間に、フィルタ濾材１０にテンションをかけるためのダンシングローラ２１が配置されている。   Specifically, the filter medium 10 is supplied to the pleating machine 50 from the feed roll 1 formed by winding the filter medium 10. Between the feeding roll 1 and the pleating machine 50, 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.

本実施形態では、最も下流側の搬送ローラ２の上方に、フィルタ濾材１０にプリーツ製品１１の大きさに応じたミシン目を形成するミシン目カッター３が設けられている。   In the present embodiment, a perforation cutter 3 for forming a perforation corresponding to the size of the pleated product 11 on the filter medium 10 is provided above the most downstream conveying roller 2.

プリーツ機５０は、一対のブレード５をフィルタ濾材１０の厚み方向（本実施形態では上下方向）に往復させるレシプロ式のものである。そして、プリーツ機５０は、供給されたフィルタ濾材１０に、厚み方向の両側から一対のブレード５を押し当ててフィルタ濾材１０をプリーツ加工する。   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 the present 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.

プリーツ加工されたフィルタ濾材１０は、当該フィルタ濾材１０を上下に挟むように配置されたヒーター４によって加熱された後に、バックプレッシャー６によって形状を整えられる。最後に、フィルタ濾材１０は、クロスカッター７により、ミシン目カッター３によって形成されたミシン目に沿って切断される。   The pleated filter medium 10 is heated by the heater 4 disposed so as to sandwich the filter medium 10 in the vertical direction, 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.

フィルタ濾材１０としては、濾材透過風速が５．３ｃｍ／ｓｅｃの条件下で、粒子径が０．１μｍ以上の粒子の捕集効率が５０％以上（好ましくは９０％以上）であるとともに圧力損失が２０Ｐａ以上（好ましくは５０Ｐａ以上）５００Ｐａ以下である濾材がエアフィルタユニットに好適に用いられる。例えば、フィルタ濾材１０は、ＰＴＦＥ多孔質膜と通気性支持材の積層体である。   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 μm 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. For example, the filter medium 10 is a laminate of a PTFE porous membrane and a breathable support material.

ＰＴＦＥ多孔質膜は、例えば次のようにして作製される。まず、ＰＴＦＥ微粉末に液状潤滑剤を加えた混合物を押出法および圧延法の少なくとも１つの方法により所定方向に延びるシート状に成形してシート状成形体を得る。次に、加熱法または抽出法によりシート状成形体から液状潤滑剤を除去してシート状成形体を乾燥させる。その後、液状潤滑剤が除去されたシート状成形体を、長手方向および幅方向に延伸する。   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.

なお、ＰＴＦＥ多孔質膜へは撥油処理が施されていてもよい。この撥油処理は、例えば表面張力の小さな物質を含む撥油剤をＰＴＦＥ多孔質膜に塗布し、これを乾燥することにより行うことができる。   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.

通気性支持材は、フィルタ濾材１０の強度を確保する役割を果たす。通気性支持材は、材質、構造、形態が特に限定されるものではないが、通気性支持材には、ＰＴＦＥ多孔質膜より通気性に優れた材料、例えば、不織布、メッシュ（網目状ネット）、その他の多孔質材を用いることができる。ただし、強度、捕集性、柔軟性、作業性の点からは不織布が好ましい。また、通気性支持材の材質としては、例えば、ポリオレフィレン（ポリエチレン（ＰＥ）、ポリプロピレン（ＰＰ）など）、ポリアミド、ポリエステル（ポリエチレンテレフタレート（ＰＥＴ）など）、芳香族ポリアミドあるいはこれらの複合材などを用いることができる。   The breathable 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.

ＰＴＦＥ多孔質膜と通気性支持材とを接合する方法は、特に限定されるものではなく、接着剤ラミネート、熱ラミネート、加熱溶着、超音波溶着、接着剤による接着などの方法を用いることができる。   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. .

さらに、本実施形態のプリーツ加工装置１００では、プリーツ加工時にフィルタ濾材１０に放電によるピンホールが形成されることを防止するための構成が採用されている。具体的には、図２に示すように、プリーツ機５０の側方に静電気除去器３０が配置されている。本実施形態では、プリーツ機５０の両側に静電気除去器３０が配置されているが、フィルタ濾材１０の幅によっては、プリーツ機５０の片側だけに静電気除去器３０が配置されていてもよい。   Furthermore, in the pleating apparatus 100 of this embodiment, the structure for preventing the pinhole by discharge from being formed in the filter medium 10 at the time of pleating is adopted. Specifically, as shown in FIG. 2, a static eliminator 30 is disposed on the side of the pleating machine 50. In the present embodiment, 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.

静電気除去器３０は、フィルタ濾材１０の幅方向の端面および一対のブレード５に向かって直接ブレード５に風が当たるようにイオン化された空気を送風する。イオン化された空気は陽イオンと陰イオンを含むため、フィルタ濾材１０とブレード５の間の静電気の放電を防ぐのに最適である。   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.

静電気除去器３０は、常時イオン化された空気を送風することが好ましい。静電気の放電はブレード５がフィルタ濾材１０にある程度接近したときに起こるが、このような状態は、フィルタ濾材１０から離間するブレード５がフィルタ濾材１０に近づくときだけでなく（すなわち、ブレード５の先端とフィルタ濾材１０の間での放電）、ブレード５がフィルタ濾材１０を押し込んでいる最中にも発生する（すなわち、ブレード５の側面とフィルタ濾材１０の間での放電）からである。   The static eliminator 30 preferably blows air that is constantly ionized. 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).

以上説明した本実施形態のプリーツ加工装置１００では、プリーツ加工時にフィルタ濾材１０とブレード５とが共に帯電した状態にないため、放電によるフィルタ濾材１０へのピンホールの形成を防止することができる。   In the pleating apparatus 100 of the present embodiment described above, since the filter medium 10 and the blade 5 are not charged at the time of pleating, the formation of pinholes in the filter medium 10 due to discharge can be prevented.

以下、本発明を実施例により説明するが、本発明は以下の実施例に制限されない。   EXAMPLES Hereinafter, although an Example demonstrates this invention, this invention is not restrict | limited to a following example.

（実施例１）
フィルタ濾材として、濾材透過風速が５．３ｃｍ／ｓｅｃの条件下で、粒子径が０．１μｍ以上の粒子の捕集効率が９９．９９９９％以上であるとともに圧力損失が５０Ｐａ以上５００Ｐａ以下である、エアフィルタユニットに好適なフィルタ濾材を用意した。 (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 μm 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.

図１および図２に示すように構成されたプリーツ加工装置を用いて、静電気除去器よりフィルタ濾材の側方からフィルタ濾材の端面および一対のブレードに向かってイオン化された空気を送風しながら、フィルタ濾材をプリーツ加工し、プリーツ製品として１０個のサンプルを製造した。なお、プリーツ加工の条件は、折り速度を６２山／ｍｉｎ、ブレードの後方に配置されたヒーターの温度を８０℃とした。また、静電気除去器としては、春日電機社製のイオンジェットノズル（MODEL NIH-55）を用いた。   Using the pleating apparatus configured as shown in FIG. 1 and FIG. 2, 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. As the static eliminator, an ion jet nozzle (MODEL NIH-55) manufactured by Kasuga Electric was used.

（比較例１）
静電気除去器の位置をフィルタ濾材の表面に向けて上方からイオン化された空気を送風するようにプリーツ機の直ぐ上流側に変更した以外は、実施例１と同様にして１０のサンプルを製造した。 (Comparative 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 as to blow air ionized from above with the surface of the filter medium.

（評価）
実施例１および比較例１のサンプル（プリーツ加工後のフィルタ濾材）について、捕集効率を測定した。具体的には、フィルタ濾材（平面視で１００ｃｍ2）を通過する空気の速度を５．３ｃｍ／秒に調整し、フィルタ濾材の上流側に、多分散ジオクチルフタレート（ＤＯＰ）粒子を１０7個／リットルとなるように供給した。上流側の空気中のＤＯＰ粒子濃度とフィルタ濾材透過してきた下流側の空気中のＤＯＰ粒子濃度をパーティクルカウンターで測定し、下記式に基づいて捕集効率を求めた。ＤＯＰ粒子の粒径は０．１μｍ〜０．２μｍとした。
捕集効率（％）＝［１−（下流側濃度／上流側濃度）］×１００ (Evaluation)
The collection efficiency was measured for the samples of Example 1 and Comparative Example 1 (filter media after pleating). Specifically, the speed of air passing through the filter medium (100 cm 2 in plan view) is adjusted to 5.3 cm / sec, and 10 7 polydisperse dioctyl phthalate (DOP) particles / The liter was supplied. The DOP particle concentration in the upstream air and the DOP particle concentration in the downstream air that has passed through the filter medium were measured with a particle counter, and the collection efficiency was determined based on the following equation. The particle size of the DOP particles was 0.1 μm to 0.2 μm.
Collection efficiency (%) = [1− (downstream concentration / upstream concentration)] × 100

上記の捕集効率の測定の結果、捕集効率が９９．９９９９％以上であるサンプルをリークなし、それ以外をリークありと判定した。   As a result of the measurement of the collection efficiency, it was determined that a sample with a collection efficiency of 99.9999% or more had no leak, and the other samples had leak.

次に、リークなしと判定されたサンプルの１つについて、「１００−捕集効率（％）」の式から透過率（％）を求め、「−Ｌｏｇ（透過率（％）／１００）」の式から評価値を求めた。すなわち、評価値が高い方が捕集効率が高いことを示す。なお、プリーツ加工前のフィルタ濾材の評価値は７．０８であった。   Next, for one of the samples determined to have no leak, the transmittance (%) is obtained from the formula of “100-collection efficiency (%)”, and “−Log (transmittance (%) / 100)” is calculated. 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.

リークの有無の結果および評価値を表１に示す。   Table 1 shows the results of the presence or absence of leakage and the evaluation values.

Figure 0005839547
Figure 0005839547

表１に示すように、プリーツ加工前にフィルタ濾材の表面のみに向かってイオン化された空気を送風した比較例１では、１０個のサンプルのうちの４個にリークが発生した。これは、高い確率でピンホールが形成されることを意味する。これに対し、フィルタ濾材の端面および一対のブレードに向かってイオン化された空気を送風した実施例１では、ピンホールが形成されずに全てのサンプルでリークがなかった。   As shown in Table 1, in Comparative Example 1 in which ionized air was blown toward only the surface of the filter medium before pleating, leakage occurred in four of the ten samples. This means that pinholes are formed with a high probability. On the other hand, in Example 1 in which ionized air was blown toward the end face of the filter medium and the pair of blades, no pinhole was formed and no leakage occurred in all samples.

また、実施例１では、比較例１よりも捕集効率が高かった。この理由は、微小なピンホールの発生が抑制されているためであると考えられる。   In 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.

１０ フィルタ濾材
３０ 静電気除去器
５０ プリーツ機
５１ ブレード
１００ プリーツ加工装置 10 Filter media 30 Static eliminator 50 Pleating machine 51 Blade 100 Pleating processing device

Claims (3)

フィルタ濾材に厚み方向の両側から、フッ素樹脂でコーティングされた一対のブレードを押し当てて前記フィルタ濾材をプリーツ加工する際に、前記フィルタ濾材の側方から静電気除去器により前記フィルタ濾材の端面および前記一対のブレードに向かって陽イオン及び陰イオンを含むイオン化された空気を送風する、フィルタ濾材のプリーツ加工方法。 When the filter medium is pleated by pressing a pair of blades coated with a fluororesin on both sides of the filter medium in the thickness direction, the end face of the filter medium and the end face of the filter medium are electrostatically removed from the side of the filter medium. A method for pleating a filter medium, in which ionized air containing cations and anions is blown toward a pair of blades. 前記フィルタ濾材は、ポリテトラフルオロエチレン多孔質膜と通気性支持材とを含む、請求項１に記載のフィルタ濾材のプリーツ加工方法。   The filter filter medium pleating method according to claim 1, wherein the filter medium includes a polytetrafluoroethylene porous membrane and a breathable support material. フィルタ濾材に厚み方向の両側から、フッ素樹脂でコーティングされた一対のブレードを押し当てて前記フィルタ濾材をプリーツ加工するレシプロ式のプリーツ機と、
前記プリーツ機の側方に、前記フィルタ濾材の端面および前記一対のブレードに向かって陽イオン及び陰イオンを含むイオン化された空気を送風するように配置された静電気除去器と、を備えた、
プリーツ加工装置。 A reciprocating pleating machine that pleats the filter medium by pressing a pair of blades coated with a fluororesin from both sides of the filter medium in the thickness direction;
A static eliminator disposed on the side of the pleating machine and arranged to blow ionized air containing cations and anions toward an end face of the filter medium and the pair of blades.
Pleated processing equipment.
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JP6185735B2 (en) * 2013-03-28 2017-08-23 日東電工株式会社 Filter filter production equipment
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US20190029975A1 (en) 2016-01-12 2019-01-31 Bioelectron Technology Corporation Tocopherol and tocotrienol quinone derivatives for increasing thiosulfate levels or decreasing hydrogen sulfide levels
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US20220105473A1 (en) * 2018-12-28 2022-04-07 Nitto Denko Corporation Filter pleat pack and air filter unit
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CN101210404B (en) * 2006-12-25 2011-04-27 王金夫 Fuel oil filter paper and producing technique thereof
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