JPS6316019A - Air filter paper - Google Patents
Air filter paperInfo
- Publication number
- JPS6316019A JPS6316019A JP15264286A JP15264286A JPS6316019A JP S6316019 A JPS6316019 A JP S6316019A JP 15264286 A JP15264286 A JP 15264286A JP 15264286 A JP15264286 A JP 15264286A JP S6316019 A JPS6316019 A JP S6316019A
- Authority
- JP
- Japan
- Prior art keywords
- filter paper
- paper
- adhered
- superposed
- porous film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012528 membrane Substances 0.000 claims description 18
- 239000000428 dust Substances 0.000 claims description 14
- 230000035699 permeability Effects 0.000 claims description 2
- 239000000835 fiber Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 7
- 239000011148 porous material Substances 0.000 abstract description 6
- -1 polyethylene Polymers 0.000 abstract description 5
- 239000000839 emulsion Substances 0.000 abstract description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 3
- 239000004925 Acrylic resin Substances 0.000 abstract description 2
- 229920000178 Acrylic resin Polymers 0.000 abstract description 2
- 239000004698 Polyethylene Substances 0.000 abstract description 2
- 229920000573 polyethylene Polymers 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 239000011800 void material Substances 0.000 abstract 2
- 238000013022 venting Methods 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 238000009423 ventilation Methods 0.000 description 5
- 239000000470 constituent Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 229920000544 Gore-Tex Polymers 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Filtering Materials (AREA)
- Paper (AREA)
Abstract
Description
【発明の詳細な説明】
（発明の利用分野）
本発明は濾紙からの発塵を阻止する多孔質膜を重ね合わ
せた空気濾紙、特にその重ね合わせ構造に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention relates to an air filter paper in which porous membranes are stacked to prevent dust generation from the filter paper, and particularly to the stacked structure thereof.
（従来技術とその問題点）
高性能濾紙例えば０．３μｍ径の粒子に対して９９．９
７％以上の捕捉効率をもつように設計された高性能２紙
は、一般に微細な硝子または化学繊維を抄紙して作られ
る。このため製造時に生じた繊維の切断屑などの濾紙構
成繊維表面への付着をまぬがれることができないばかり
か、抄紙に当たって使用される水の中にも微少な粉塵が
含まれるのを阻止できない、その結果出来上がった濾紙
中およびその表面に多数の繊維粉や粉塵などの付着含有
を許し、これが送風時或いは濾紙に与えられる振動によ
って発塵してｐ過器の下流側に出る。このため実質的な
捕捉効率の低下を生ずることが明らかにされた。(Prior art and its problems) High performance filter paper, for example, 99.9% for particles with a diameter of 0.3 μm
High performance papers designed to have capture efficiencies of 7% or higher are generally made from fine glass or synthetic fibers. For this reason, not only is it impossible to avoid adhesion of cut fiber waste generated during manufacturing to the surface of the filter paper's constituent fibers, but it is also impossible to prevent minute dust from being included in the water used in paper making. A large amount of fiber powder and dust is allowed to adhere to the finished filter paper and its surface, and this dust is generated by air blowing or vibrations applied to the filter paper and exits to the downstream side of the filter. It has been revealed that this results in a substantial decrease in trapping efficiency.
これを防止するためには例えば濾紙の構成繊維間を接着
して機械的強度を増すため、抄紙用の水中に混入される
接着剤の濃度を高くして、切断屑などを構成繊維の表面
に接着する方法が考えられる。しかし接着剤の濃度を高
くすると濾紙の通気細孔が埋められて圧力損失を大にす
るため、この方法では発塵の阻止を充分に行い得ない。To prevent this, for example, in order to increase mechanical strength by adhering the constituent fibers of filter paper, the concentration of adhesive mixed in the water used for paper making may be increased, and cut debris etc. may be attached to the surface of the constituent fibers. One possible method is to glue it. However, increasing the concentration of the adhesive fills the ventilation pores of the filter paper and increases pressure loss, so this method cannot sufficiently prevent dust generation.
そこで本発明者は先に例えばポリ四弗化エチレンなどの
弗素系樹脂を処理して作られた、濾紙の厚さ４００〜５
００μｍに対して５〜２０μｍの極めて薄い厚さの多孔
質膜、例えばジャパンゴアテックス株式会社製商品名ゴ
アテックスが、抄紙濾紙のような発塵物が全くないばか
りか前記切断層などを阻止するに充分な小さい通気細孔
を持つと同時に、最高９５％程度の極めて大きい開孔率
を持ち、しかも極めて薄いことから圧力損失が少ないこ
とを利用して、これを第１図に示すように抄紙−祇（１
）の空気流出口側、即ち下流方向面に発塵阻止体（２）
として重ね合わせることにより、少ない圧力損失のもと
に発塵を効果的に阻止して高性能濾紙の性能の向上を図
ることを提案した（特願昭６１−１１７４９７号参照）
。Therefore, the present inventor first developed a filter paper made by treating a fluorine-based resin such as polytetrafluoroethylene, which has a thickness of 400 to 50 mm.
A porous membrane with an extremely thin thickness of 5 to 20 μm compared to 0.0 μm, such as Gore-Tex (trade name, manufactured by Japan Gore-Tex Co., Ltd.), not only does not generate any dust unlike paper filters, but also prevents the cutting layer. As shown in Figure 1, the paper is made by taking advantage of the fact that it has small ventilation pores that are sufficient for airflow, and at the same time has an extremely large porosity of up to 95%, and because it is extremely thin, there is little pressure loss. -Gi (1
) on the air outlet side, that is, on the downstream side, there is a dust prevention body (2)
proposed to improve the performance of high-performance filter paper by effectively preventing dust generation with little pressure loss by overlapping the paper as a material (see Japanese Patent Application No. 117497/1982).
.
しかし、この発塵阻止用多孔質膜（２）は圧力損失を少
なくするため極めて薄いことから、それ自体では必要と
する機械的強度を得ることができない。However, since this porous membrane for preventing dust generation (2) is extremely thin in order to reduce pressure loss, it cannot obtain the required mechanical strength by itself.
そこで濾紙（１）との重ね合わせに当たっては、例えば
濾紙と多孔質膜とを接着剤により貼り合わせる方法が強
度的にも加工の容易性からも有利であるが、この方法に
は次のような大きな欠点がある。Therefore, when stacking the filter paper (1), for example, a method of bonding the filter paper and porous membrane with an adhesive is advantageous in terms of strength and ease of processing. There is a big drawback.
即ち濾紙（１）の面には繊維の重なり合いにもとづく凹
凸があるため、接着剤が塗られてもその通気細孔を埋め
る率は少ない。しかし樹脂製の多孔質膜（２）は平滑面
であるため、その通気細孔の多くが接着剤により埋めら
れて開孔率の大きな低下を招く。That is, since the surface of the filter paper (1) has irregularities due to overlapping fibers, even if adhesive is applied, the rate of filling the ventilation pores is low. However, since the resin porous membrane (2) has a smooth surface, many of its ventilation pores are filled with the adhesive, resulting in a large decrease in the porosity.
従って圧力損失の著しい増大を招いて濾紙として使用出
来な（なる。This results in a significant increase in pressure loss, making it impossible to use it as a filter paper.
そこで例えば枦祇と多孔質膜の重ね合わせ方法として、
濾紙の四周部において多孔質膜を貼り合わせる方法、或
いは多孔質膜を枠体に張って濾紙と重ね合わせる方法を
とらざるを得ない。しかしこれらの方法のように四周の
みを支持するものでは、支持部以外の部分の送風圧に対
する機械的強度に不安がある。Therefore, for example, as a method of overlapping Azugi and porous membrane,
There is no choice but to use a method in which a porous membrane is attached to the four circumferential parts of the filter paper, or a method in which the porous membrane is stretched on a frame and overlapped with the filter paper. However, with these methods in which only the four circumferences are supported, there is concern about the mechanical strength of parts other than the support portion against the blowing pressure.
（発明の目的）
本発明は以上のような欠点のない濾紙と多孔質膜との重
ね合わせ構造の提供を目的としてなされたもので、次に
図面を用いてその詳細を説明する。(Object of the Invention) The present invention has been made for the purpose of providing a superimposed structure of filter paper and porous membrane without the above-mentioned drawbacks, and the details thereof will be explained below with reference to the drawings.
（問題点を解決するための本発明の手段）本発明におい
ては第２図に示すように、多孔質膜（２）の−面に通気
性のよい補強用紙体（３）を重ね合わせて、これら両者
を複数点において細かい点状（４）に接着したものを濾
紙（１）に重ね合わせるか、接着により永久に重ね合わ
せるようにしたことを特徴とするものである。次に具体
例について説明する。(Means of the present invention for solving the problems) In the present invention, as shown in FIG. The filter paper is characterized in that both of these are adhered in the form of fine dots (4) at a plurality of points and then superimposed on the filter paper (1), or permanently overlapped by adhesion. Next, a specific example will be explained.
ポリエチレン繊維を抄紙して作られた目付１５〜２０ｇ
／ ｍ、厚さ０．３■璽の紙体（３）を、厚さ５〜２０
μｍ。Fabric weight 15-20g made from polyethylene fiber
/ m, thickness 0.3 ■ Seal paper (3), thickness 5-20
μm.
開孔率が９５％のポリ四弗化エチレン多孔質膜（２）に
重ね合わせる。そしてこれを第３図のように一方のロー
ラ面に径が１〜１．５ｍｍの凸部（５ａ）を間隔５ｆｌ
で多数設けた、２５０〜３００℃に加熱されているロー
ラ（５１（６）間に通して適当な圧力を加えることによ
り、紙化（３）と多孔質膜（２）の熱可塑性を利用して
第２図中に黒丸（４）で図示するように点状に接着する
。゛そしてこれを濾紙（１）の下流面に重ね合わせるか
、またはアクリル樹脂水エマルジヨン液を塗布した濾紙
（１）の下流面に紙化（３）が戸紙面に（１）するよう
に重ね合わせて接着する。また、更にはｐ祇（１）が化
学繊維で作られている場合には、濾紙（１）と多孔質膜
（２）の間に紙化（３）が位置するように重ね合わせた
ものを、第３図のローラ（５） （６１間に通すことに
より、３者の熱可塑性を利用して同時に接着する。It is superimposed on a polytetrafluoroethylene porous membrane (2) with a porosity of 95%. Then, as shown in Fig. 3, convex portions (5a) with a diameter of 1 to 1.5 mm are placed on one roller surface at intervals of 5fl.
By applying appropriate pressure between rollers (51 (6)) heated to 250 to 300°C, which are installed in large numbers at Then, adhere it in dots as shown by the black circles (4) in Figure 2. Then, either overlap it on the downstream surface of the filter paper (1) or attach it to the filter paper (1) coated with an acrylic resin water emulsion. On the downstream side of the filter paper (3), overlap and glue it so that it is on the door paper side (1).Also, if the p-gi (1) is made of chemical fiber, the filter paper (1) and the porous membrane (2) so that the paper layer (3) is positioned between the rollers (5) (61 in Fig. 3), making use of the thermoplastic properties of the three. and glue at the same time.
また紙化（３）として硝子繊維製のものが使用された場
合には、紙体（３）の−面に例えば弗素樹脂水エマルジ
ヨン液を塗布して１５０℃程度の温度で乾燥したものを
４００〜５００℃で加熱処理したのち、多孔質膜（２）
と重ね合わせて４００〜５００℃に加熱されたローラ間
に通して接着する。そしてこれを濾紙（１）の下流面に
重ね合わせるか、上記と同一要領によりＰ紙面に接着し
て永久的な重ね合わせを行う。In addition, when a glass fiber material is used as the paper material (3), for example, a fluororesin water emulsion liquid is applied to the negative side of the paper material (3) and dried at a temperature of about 150°C. After heat treatment at ~500℃, porous membrane (2)
These are overlapped and passed between rollers heated to 400 to 500°C to be bonded. This is then superimposed on the downstream surface of the filter paper (1), or permanently superposed by adhering it to the P paper surface in the same manner as above.
（本発明の作用と効果）
以上のように多孔質膜（２）と補強用紙体（３）とは全
面に亘る複数点において小さい点状に接着される。(Operations and Effects of the Present Invention) As described above, the porous membrane (2) and the reinforcing paper body (3) are adhered in the form of small dots at a plurality of points over the entire surface.
従って紙化（３）の通気度の選定と接着点１箇の大きさ
や数の選定を得たい機械的強度との関連のもとに行うこ
とにより、開孔率の低下少なく多孔質膜（３）を補強で
きる。従って濾紙の四周に接着したり、枠体に嵌めこむ
方法に比べて高い機械的強度を与えうるので濾紙との重
ね合わせに有効である。しかも本発明によれば濾紙（１
）と接着しても、接着される濾紙（１）と框体（３）の
面にはそれぞれ構成繊維の重なり合いにもとづく凹凸が
あるので、接着剤による通気細孔の目詰まりは少なく圧
力損失の大きな上昇を招くおそれがない。Therefore, by selecting the air permeability of paperization (3) and selecting the size and number of bonding points in relation to the desired mechanical strength, it is possible to reduce the drop in porosity and reduce the porosity (3). ) can be reinforced. Therefore, it is effective for stacking with filter paper because it can provide higher mechanical strength than methods of adhering to the four circumferences of the filter paper or fitting it into the frame. Moreover, according to the present invention, the filter paper (1
), the surfaces of the filter paper (1) and frame (3) to be adhered have unevenness due to the overlapping of the constituent fibers, so the clogging of the ventilation pores by the adhesive is small and pressure loss is reduced. There is no risk of a large increase.
実験によれば、前記のように目付１５〜２０ｇ／ ｒｄ
。According to the experiment, the basis weight is 15-20g/rd as mentioned above.
.
厚さ０ 、３ ＊＊の紙体（３）を開孔率が９５％の弗
素樹脂系多孔質膜について接着した場合、開孔率の低下
は約８％の小さい値ですみ、一般に使用される送風圧５
．３ａｍ／ｓｅｃにも充分耐える機械的強度をもつこと
が明らかにされた。従ってこれを濾紙に重ね合わせるこ
とにより充分な機械的強度をもった発塵による性能低下
のない高性能濾紙を得るこきができる。When a paper body (3) with a thickness of 0 or 3** is bonded to a fluororesin porous membrane with a porosity of 95%, the decrease in porosity is only a small value of about 8%, and it is not commonly used. Air blowing pressure 5
．． It was revealed that the material had mechanical strength sufficient to withstand 3 am/sec. Therefore, by layering this on a filter paper, it is possible to obtain a high-performance filter paper that has sufficient mechanical strength and does not deteriorate in performance due to dust generation.
第１図は発塵阻止用多孔質膜を有する濾紙の説明斜視図
、第２図は本発明の実施例斜視図、第３図は接着用ロー
ラの部分図である。
（１）・・・Ｐ紙、 （２）・・・発塵阻止用多孔質膜
、（３）・・・補強用紙体、 （４）・・・点状接着部
、（５） （６１・・・接着用ローラ、 （５ａ）・・
・突部。FIG. 1 is an explanatory perspective view of a filter paper having a porous membrane for preventing dust generation, FIG. 2 is a perspective view of an embodiment of the present invention, and FIG. 3 is a partial view of an adhesive roller. (1)...P paper, (2)...porous membrane for preventing dust generation, (3)...reinforced paper body, (4)...dotted adhesive portion, (5) (61.・Adhesive roller (5a)・・
・Protrusion.
Claims (1)
重ね合わせた空気濾紙において、上記発塵阻止用多孔質
膜の一面に通気性のよい紙体を点的に接着し、これを抄
紙濾紙に重ね合わせたことを特徴とする空気濾紙。In an air filter paper in which a paper filter paper and a porous membrane for preventing dust generation from the filter paper are stacked, a paper body with good air permeability is bonded at points on one side of the porous membrane for preventing dust generation, and this is An air filter paper characterized by being superimposed on a paper filter paper.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15264286A JPS6316019A (en) | 1986-07-01 | 1986-07-01 | Air filter paper |
| EP87304583A EP0246917B1 (en) | 1986-05-23 | 1987-05-22 | High performance gas filter |
| AT87304583T ATE78416T1 (en) | 1986-05-23 | 1987-05-22 | HIGH PERFORMANCE GAS FILTER. |
| DE8787304583T DE3780511T2 (en) | 1986-05-23 | 1987-05-22 | HIGH PERFORMANCE GAS FILTER. |
| US07/230,275 US4877433A (en) | 1986-05-23 | 1988-09-26 | High performance gas filter assembly |
| HK1158/93A HK115893A (en) | 1986-05-23 | 1993-10-28 | High performance gas filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15264286A JPS6316019A (en) | 1986-07-01 | 1986-07-01 | Air filter paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6316019A true JPS6316019A (en) | 1988-01-23 |
| JPH0410364B2 JPH0410364B2 (en) | 1992-02-25 |
Family
ID=15544869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15264286A Granted JPS6316019A (en) | 1986-05-23 | 1986-07-01 | Air filter paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6316019A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002370020A (en) * | 2001-06-13 | 2002-12-24 | Nitto Denko Corp | Suction filter medium for turbine, its using method and manufacturing method therefor |
| KR100579156B1 (en) | 2004-07-08 | 2006-05-12 | 주식회사 캐프스 | Method for manufacturing fuel filter media for vehicle and the fuel filter media made by the method |
| JP2008507434A (en) * | 2004-07-22 | 2008-03-13 | ゴア エンタープライズ ホールディングス，インコーポレイティド | Filter media |
| US7837756B2 (en) | 2007-04-05 | 2010-11-23 | Aaf-Mcquay Inc. | Filter with ePTFE and method of forming |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5125874A (en) * | 1974-08-28 | 1976-03-03 | Yuasa Battery Co Ltd | SEIMITS USEKISOROKAZAI |
| JPS56159113U (en) * | 1980-04-24 | 1981-11-27 |
-
1986
- 1986-07-01 JP JP15264286A patent/JPS6316019A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5125874A (en) * | 1974-08-28 | 1976-03-03 | Yuasa Battery Co Ltd | SEIMITS USEKISOROKAZAI |
| JPS56159113U (en) * | 1980-04-24 | 1981-11-27 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002370020A (en) * | 2001-06-13 | 2002-12-24 | Nitto Denko Corp | Suction filter medium for turbine, its using method and manufacturing method therefor |
| KR100579156B1 (en) | 2004-07-08 | 2006-05-12 | 주식회사 캐프스 | Method for manufacturing fuel filter media for vehicle and the fuel filter media made by the method |
| JP2008507434A (en) * | 2004-07-22 | 2008-03-13 | ゴア エンタープライズ ホールディングス，インコーポレイティド | Filter media |
| US7837756B2 (en) | 2007-04-05 | 2010-11-23 | Aaf-Mcquay Inc. | Filter with ePTFE and method of forming |
| US8152889B2 (en) | 2007-04-05 | 2012-04-10 | Aaf-Mcquay Inc. | Filter with EPTFE and method of forming |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0410364B2 (en) | 1992-02-25 |
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