JPS61275495A - Production of filter material - Google Patents
Production of filter materialInfo
- Publication number
- JPS61275495A JPS61275495A JP11076085A JP11076085A JPS61275495A JP S61275495 A JPS61275495 A JP S61275495A JP 11076085 A JP11076085 A JP 11076085A JP 11076085 A JP11076085 A JP 11076085A JP S61275495 A JPS61275495 A JP S61275495A
- Authority
- JP
- Japan
- Prior art keywords
- slurry
- papermaking
- fibers
- layer
- density
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims description 14
- 238000004519 manufacturing process Methods 0.000 title description 12
- 239000002002 slurry Substances 0.000 claims description 40
- 239000000835 fiber Substances 0.000 claims description 29
- 239000002994 raw material Substances 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 239000010410 layer Substances 0.000 description 23
- 238000000034 method Methods 0.000 description 18
- 239000000428 dust Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000003475 lamination Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- 229920002873 Polyethylenimine Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001206 natural gum Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Landscapes
- Filtering Materials (AREA)
- Paper (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、厚み方向に密度勾配を有しかつ表面に起毛
された、自動車等の内燃機関等のオイルフィルタ、エア
クリーナなどの濾過材の製造法に関する。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to the production of filter media for oil filters for internal combustion engines of automobiles, air cleaners, etc., which have a density gradient in the thickness direction and have a raised surface. Regarding the law.
従来の長期使用可能な濾過材には、ダストの侵入側（被
濾過流体の流れの上流側、表層）が気孔の大きい粗層に
、その反対側（その流れの下流側、重層）が気孔の小さ
い密層である密度勾配になるように一体形成されたもの
または抄ぎ合せられたものがある。Conventional filter media that can be used for a long time have a coarse layer with large pores on the side where dust enters (the upstream side of the flow of the fluid to be filtered, the surface layer), and a coarse layer with large pores on the opposite side (downstream side of the flow, the layer). There are those that are integrally formed or are assembled to form a density gradient, which is a small dense layer.
しかしながら、このような密度勾配の構造では、被濾過
流体（例えば、ｒＩＩ滑油、空気）中に浮遊したダスト
を捕捉する際、細かいダストは気孔の小さい裏層で捕捉
され、また気孔の大きい表層で捕捉されるので、濾過材
の表面にダストのケーキ層が形成されず、また仮にケー
キ層が形成されても濾過材が目詰りをおこしてフィルタ
の寿命を短かくする。However, in such a structure with a density gradient, when capturing dust suspended in the fluid to be filtered (e.g. rII oil, air), fine dust is captured in the back layer with small pores, and the surface layer with large pores captures fine dust. Therefore, a cake layer of dust is not formed on the surface of the filter material, and even if a cake layer of dust is formed, the filter material will be clogged and the life of the filter will be shortened.
したがって、本発明者らは、従来の濾過材と逆の密度勾
配構造、すなわち気孔率の小さな密層をダスト進入側に
、またその反対側に気孔率の大きな粗層を形成させる密
度勾配構造を有し、しかもダスト侵入側の表面に繊維を
杭状に起毛させた濾過材を開発して従来の濾過材の問題
点を克服している。Therefore, the present inventors developed a density gradient structure that is opposite to that of conventional filter media, that is, a density gradient structure in which a dense layer with low porosity is formed on the dust entry side, and a coarse layer with high porosity is formed on the opposite side. The problem of conventional filter materials has been overcome by developing a filter material with fibers raised in the form of piles on the surface on the dust entry side.
従来、濾過材の厚み方向に密度勾配を有する濾過材を製
造する方法として、短かく細かい繊維を含む密スラリー
と長く太いａｕｉを含む粗スラリーとを、各々に別々の
抄紙機によって逐次的に抄造して抄き合せる方法がある
。この方法では、製造上受なくとも二台の抄紙機が必要
であり、設備過大となりひいてはコストアップの原因と
なっていた。さらに、この方法によって製造された濾過
材は、抄き合せ強度が大きくないために粗層が密層から
剥離しやすいという欠点があった。この方法の問題点を
解消する製造方法として、抄造網上に密スラリーをまず
数置し、これが末だ完全に脱水されていない状態で粗ス
ラリーを数置する方法が提案されている。（特公昭５４
−４０７７８号公報）。Conventionally, as a method for manufacturing a filter medium having a density gradient in the thickness direction of the filter medium, a dense slurry containing short, fine fibers and a coarse slurry containing long, thick fibers are sequentially made using separate paper machines. There is a way to combine them. This method requires two paper machines, even if it is not acceptable for production purposes, resulting in excessive equipment and an increase in costs. Furthermore, the filter medium manufactured by this method has a drawback that the coarse layer easily separates from the dense layer because the combined strength is not large. As a manufacturing method that solves the problems of this method, a method has been proposed in which several dense slurries are first placed on a papermaking screen, and then several coarse slurries are placed on the paper-making net while the slurry is not completely dehydrated. (Tokuko 1977
-40778).
しかし、この方法でも密層を形成するのに比較的時間を
要するために抄紙速度の増大を促すことができない。However, even with this method, it takes a relatively long time to form a dense layer, so it is not possible to increase the papermaking speed.
さらに、濾過材の凹凸表面に繊維の起毛層を有する濾過
材を製造する方法については、抄造された濾過材に所定
の繊維を植え付けることが知られているが、植毛工程を
抄造工程とは別に追加する必要があり、製造費用の高騰
を招くおそれがある。Furthermore, it is known that a method for producing a filtration medium having a raised layer of fibers on the uneven surface of the filtration medium involves planting predetermined fibers in a paper-made filtration medium, but the flocking process is performed separately from the paper-making process. This may lead to an increase in manufacturing costs.
この発明は、これらの事情に鑑みなされたものであり、
その目的とするところは、厚み方向に従来のものと逆の
密度勾配を有しかつ表面に起毛された優れた、高速に抄
造可能な濾過材の製造法ｉ供することである。This invention was made in view of these circumstances,
The purpose is to provide a method for producing an excellent filter material that has a density gradient in the thickness direction opposite to that of conventional filter materials and has a raised surface and can be formed at high speed.
本発明の濾過材の製造方法は、濾過材の面方向においで
高密度部と低密度部とが散在し、かつ厚さ方向において
被濾過流体の流れの上流側が高密度で下流側が低密度で
あるような密度勾配を有するとともに、被濾過流体の流
れの上流側の濾過材の凹凸表面に１ｌＩＩｉの起毛層が
形成されている濾過材を製造するにあたって、次の工程
を含むことを特徴とするものである。The method for producing a filter medium of the present invention is characterized in that high-density areas and low-density areas are scattered in the plane direction of the filter medium, and in the thickness direction, the upstream side of the flow of the fluid to be filtered has a high density and the downstream side has a low density. In manufacturing a filter medium having a certain density gradient and a raised layer of 1lIIi formed on the uneven surface of the filter medium on the upstream side of the flow of the fluid to be filtered, the method is characterized by including the following steps. It is something.
（ａ） 移動する抄造用長網の片面に繊維含有抄紙原
料スラリーを供給するとともにその抄造網の他面から吸
引して抄造網上にたい積層を形成する工程（ただし、そ
の際に、スラリー吸引流の方向と抄造網移動の方向との
なす平均角度をたい積層中の少なくとも一部の繊維が厚
さ方向に配向するように設定するものとする）
（ｂ） 抄造網上に形成されたたい積層に、凹凸ロー
ルを押し付けてその層表面に凹凸形状を設ける工程。(a) A process of supplying fiber-containing papermaking raw material slurry to one side of a moving fourdrinier and sucking it from the other side of the papermaking net to form a thick layer on the papermaking net (however, at this time, the slurry suction The average angle between the direction of flow and the direction of movement of the papermaking net shall be set so that at least some of the fibers in the lamination are oriented in the thickness direction.) (b) The fibers formed on the papermaking net A process in which a textured roll is pressed against the laminate to create a textured shape on the surface of the layer.
この発明の濾過材の製造法は、まず、長網式の抄造網の
片面に抄紙原料スラリー供給するとともにその抄造網の
他面から吸引する。この工程において、長網の種類、金
網の材質、形状、メツシュなど、並びに抄造速度などの
抄造操作条件は、目的物である濾過材の種類、用途、材
質等に応じて任意に変更することができる。この発明に
用いることのできる抄紙原料スラリーは、天然１ｊ１．
Ｍあるいは合成繊維、もしくはそれらの混合繊維を含有
し、濾過材の種類や用途に応じて種々の添加剤を抄造前
もしくは後に含めることができる。添加する物には、例
えば、リンター、パルプ、デンプン、変性デンプン、ア
クリルアミド樹脂、天然ガム、セルロース誘導体、尿素
樹脂、メラミン樹脂、ポリエチレンイミン、着色剤、無
機質充てん料、耐油性向上剤、耐水性向上剤などがある
。In the method for manufacturing a filter medium of the present invention, first, a papermaking raw material slurry is supplied to one side of a fourdrinier-type papermaking net, and then sucked from the other side of the papermaking net. In this process, the type of Fourdrinier, the material, shape, mesh, etc. of the wire mesh, as well as the papermaking operating conditions such as the papermaking speed, can be arbitrarily changed depending on the type, purpose, material, etc. of the target filtration medium. can. The papermaking raw material slurry that can be used in this invention is natural 1j1.
M, synthetic fibers, or mixed fibers thereof, and various additives can be added before or after papermaking depending on the type and use of the filter medium. Examples of additives include linters, pulp, starches, modified starches, acrylamide resins, natural gums, cellulose derivatives, urea resins, melamine resins, polyethylene imine, colorants, inorganic fillers, oil resistance improvers, and water resistance improvers. There are drugs etc.
この発明において抄紙原料スラリーは、抄造のたい積層
中の少なくとも一部の繊維がたい積層の厚み方向に配向
するような角度で抄造網に吸引される。したがって、抄
紙原料スラリーの吸引角度（抄造網直前のスラリーが移
動する方向と抄紙ワイヤの移動方向とのなす角度）は、
その吸引速度および抄造網の移動速度に応じて適宜変更
して設定される。従来の通常の抄紙におけるスラリーの
供給角度がＯｏまたは５°〜１０°の角度に設定されて
いたが、本発明における重要な特徴は、その吸引角度が
スラリーの中の繊維が適切に起毛するように、例えば好
ましくは３０’以上の角度に設定されることがある。In this invention, the papermaking raw material slurry is sucked into the papermaking net at an angle such that at least some of the fibers in the laminations to be made are oriented in the thickness direction of the laminations. Therefore, the suction angle of the papermaking raw material slurry (the angle between the direction in which the slurry moves just before the papermaking net and the direction in which the papermaking wire moves) is:
The setting is changed as appropriate depending on the suction speed and the moving speed of the papermaking net. In conventional papermaking, the slurry supply angle was set at Oo or an angle of 5° to 10°, but the important feature of the present invention is that the suction angle is set so that the fibers in the slurry are properly raised. For example, the angle may preferably be set to 30' or more.
スラリーを吸引する圧力は、スラリーの流速、種類、１
ｌｖ１、温度など、また濾過材の用途、材質などに応じ
て適宜変更することができる。この吸引は、一般に、抄
造網の片面にサクションボックスを配置して行なうこと
ができる。The pressure to suck the slurry depends on the slurry flow rate, type, 1
It can be changed as appropriate depending on the lv1, temperature, etc., and the purpose and material of the filter material. This suction can generally be achieved by placing a suction box on one side of the paper mesh.
抄造されたたい積層（以下、湿シートもしくはシートと
もいう）に厚み方向の密度勾配を付与するために、脱水
完了の状態でのたい積層の湿シートにローラを接触させ
て表層部を圧縮することができ、また、粗スラリーと密
スラリーを順次に抄造網に供給してもよい。前者のロー
ラ圧縮の直後、シート中に配向した繊維がその剛性と反
発力によってシート表面から杭状に更に起毛する。In order to impart a density gradient in the thickness direction to the laminated laminated paper (hereinafter also referred to as a wet sheet or sheet), a roller is brought into contact with the wet sheet of the laminated laminated body after dewatering has been completed to compress the surface layer. Alternatively, the coarse slurry and the dense slurry may be sequentially supplied to the papermaking net. Immediately after the former roller compression, the fibers oriented in the sheet are further raised in the form of piles from the sheet surface due to their rigidity and repulsive force.
表面からの起毛は、粗大なダスト粒子が集塵されてダス
トのケーキ層が形成される程度であり、例えば塵の大き
さが５〜７０μ程度であるとき、配向繊維の突出部の長
さが８０〜３００μであれば充分である。また、起毛の
表面密度は必ずしも芝生状の程度に密である必要はなく
、ダストのケーキ層が形成される程度に疎らであっても
よい。Raising from the surface is the extent to which coarse dust particles are collected and a cake layer of dust is formed.For example, when the size of the dust is about 5 to 70μ, the length of the protruding part of the oriented fibers is A thickness of 80 to 300μ is sufficient. Further, the surface density of the nap does not necessarily have to be as dense as that of a lawn, but may be as sparse as that of forming a cake layer of dust.
抄造網上に形成されたたい積層に、脱水前の任意の工程
で表面凹凸の特殊ロールを接触させて、たい積層の表面
に凹凸形状を形成し、同時に濾過材の面方向において高
密度と低密度部とが散在するように密度変化を設けさせ
てもよい。凹凸状のロールの凹凸割合は１０／１０又は
３／７〜７／３の範囲である。この凹凸ロールによる接
触は、抄きあがった表面のみに凹凸の変化をもたせるた
めに、スラリーの最終吸引工程中もしくは直優に、すな
わち抄造網のヘッドボックス水面直下で行なうことが好
ましい。その場合、濾過材の厚み全体の５〜１５％の範
囲で凹凸層が得られる。A special roll with an uneven surface is brought into contact with the laminated layer formed on the papermaking net in an arbitrary step before dewatering, to form an uneven shape on the surface of the laminated layer, and at the same time to create a high density and a low density in the plane direction of the filter medium. Density changes may be provided such that density portions are scattered. The unevenness ratio of the uneven roll is 10/10 or in the range of 3/7 to 7/3. This contact with the uneven roll is preferably carried out during the final suction step of the slurry or directly, that is, directly below the water surface of the head box of the papermaking net, in order to cause a change in the unevenness only on the surface of the paper. In that case, the uneven layer can be obtained in a range of 5 to 15% of the total thickness of the filter medium.
従来からの技術の従って、抄造されたたい積層は乾燥さ
せられ、また後処理とにフェノール樹脂などの繊維固着
剤で含浸させることもできる。上記のように製造された
濾過材は、その用途に応じて切断、成形、加工の処理を
行ってその使用に供される。In accordance with conventional techniques, the paper-made laminate is dried and can also be post-treated and impregnated with a fiber fixing agent such as a phenolic resin. The filter medium manufactured as described above is subjected to cutting, molding, and processing according to its intended use, and is then put to use.
この発明において、抄紙スラリーの供給と吸引とを抄造
網上で実質的に同時に行なうので従来の密度勾配を有す
る濾過材のＩＩ造方法に比べて大幅に抄紙速度を増大さ
せることができる。また、この発明に従った同時吸引と
スラリー吸引角度の設定によって極めて容易に濾過材表
面に起毛させることができる。In this invention, since the supply and suction of papermaking slurry are carried out substantially simultaneously on the papermaking net, the papermaking speed can be significantly increased compared to the conventional II manufacturing method of a filter medium having a density gradient. Further, by simultaneous suction and setting of the slurry suction angle according to the present invention, fluff can be extremely easily raised on the surface of the filter medium.
この発明の方法を、この発明の方法に使用することので
きる装置例の概要を示す第１図を参照しつつ、詳細に説
明する。The method of the invention will be explained in detail with reference to FIG. 1, which shows an overview of an example of an apparatus that can be used in the method of the invention.
この装置は、通常の長網抄紙機を本発明にしたがって改
良したものであり、複数のスラリー供給バイブ２２と、
Ｂ方向に循環する長網２４と、サクションボックス２６
と、ヘッドボックス水面２１直下の凹凸ロール２０とか
ら主に構成されている。This device is an ordinary Fourdrinier paper machine improved according to the present invention, and includes a plurality of slurry supplying vibrators 22,
Fourdrinier 24 circulating in direction B and suction box 26
and an uneven roll 20 directly below the water surface 21 of the head box.
次いで、この装置の使用法を説明する。まず、抄紙スラ
リーの原料を所定の割合で混合し、これをビータ工程、
マシンチェストにかけて、濃度調節器（図示せず）で所
望の濃度に調整する。この１１度調整された原料スラリ
ーをポンプ（図示せず）によってスラリー供給バイブ２
２からヘッドボックスに吐出させる。この装置において
、抄紙スラリーの供給は、三種の複数のスラリー供給バ
イブから行ない、比較的粗く大きく長い繊維を含む第１
スラリー１′、まっすぐな均一な太さの繊維を含む第２
スラリー１″、比較的細かく短かい繊維を含む第３スラ
リー１“′が各々のバイブ２２からスラリーのプールで
あるヘッドボックスに吐出される。Next, how to use this device will be explained. First, the raw materials for papermaking slurry are mixed in a predetermined ratio, and this is passed through the beater process.
Place in a machine chest and adjust to the desired concentration using a concentration regulator (not shown). This 11 degree adjusted raw material slurry is fed to the slurry supply vibrator 2 by a pump (not shown).
Discharge from 2 to the head box. In this device, papermaking slurry is supplied from three different types of slurry supplying vibrators, and the first one is relatively coarse and contains large and long fibers.
slurry 1', a second slurry containing straight and uniformly thick fibers;
A slurry 1'' and a third slurry 1'' containing relatively fine and short fibers are discharged from each vibrator 22 into a head box which is a pool of slurry.
抄造用長網２４を矢印Ｂの方向に循環させ、同時にサク
ションボックス２６’ 、２６“ ２ （３ＩＩＩより
吸引し、たい積層の湿シート２８を形成する。The fourdrinier 24 for papermaking is circulated in the direction of arrow B, and at the same time it is suctioned through the suction boxes 26', 26''2 (3III) to form a laminated wet sheet 28.
抄きあがったシート２８をサクションボックス２６ ”
’直上の凹凸ロールで圧縮する。この凹凸ロールによる
圧縮によって抄きあがった表面のみに凹凸の変化をもた
せることができる。連続的に形成される湿シートは、乾
燥器に導びかれて濾過材となる。The finished sheet 28 is transferred to the suction box 26.
'Compact with the uneven roll directly above. By compression using the uneven roll, only the surface of the paper sheet can have a change in unevenness. The continuously formed wet sheet is led to a dryer and becomes a filter medium.
上述のように使用して濾過材が形成されるのは、理論的
に必ずしも明らかではないが、この装置例では次のよう
に作用するものと考えられる。パイプから吐出された各
スラリーは、多く混合することなく層流を形成してヘッ
ドボックス中を抄造網２４へ流され、各々サクションボ
ックス２６′、２６″および２６“′に主に吸引される
。その際、サクションボックス２６″の吸引力によって
第２スラリー中の棒状繊維が方向性を持ち、化学繊維な
どの比較的直線状の均一な断面を持つ棒状繊維が第１ス
ラリーのたい積層に突き刺るように、換言すれば、繊維
の長手方向がその層の厚み方向に配向するように吸引さ
れる。すなわち、本発明における、スラリー吸引流の方
向と抄造網移動の方向とのなす平均角度は、この装置で
は、第１図に示すように長網の移動方向とスラリーの移
動方向Ａとの角度αに相当する。Although it is not necessarily theoretically clear that a filter medium is formed using the method described above, it is thought that this example of the device operates as follows. Each slurry discharged from the pipe forms a laminar flow without much mixing and flows through the head box to the papermaking net 24, and is mainly sucked into the suction boxes 26', 26'' and 26'', respectively. At this time, the rod-shaped fibers in the second slurry have directionality due to the suction force of the suction box 26'', and rod-shaped fibers such as chemical fibers with a relatively straight and uniform cross section pierce the laminated layer of the first slurry. In other words, the fibers are sucked so that the longitudinal direction of the fibers is oriented in the thickness direction of the layer.In other words, in the present invention, the average angle between the direction of the slurry suction flow and the direction of movement of the papermaking net is , in this device, corresponds to the angle α between the moving direction of the fourdrinier and the moving direction A of the slurry, as shown in FIG.
また、第三サクションボックス２６″′付近では、繊維
が網面と平行に吸引され、網上に比較的細かく短かい繊
維がたい積層（湿シート）面上の杭状に突きざさった繊
維の間に蓄積される。このようにして得られたたい積層
の湿シートは、水面直下の凹凸ロール２０によって押し
付けられて、抄きあがった表面のみに凹凸変化をもたせ
られ、同時に、面方向において高密度部と低密度部とが
散在するように変化する。In addition, near the third suction box 26'', the fibers are sucked parallel to the net surface, and there are relatively fine and short fibers on the net between the fibers sticking out like piles on the laminated (wet sheet) surface. The laminated wet sheet obtained in this way is pressed by the unevenness roll 20 just below the water surface, giving unevenness only on the surface of the sheet, and at the same time creating a high density in the surface direction. and low-density areas.
さらに、湿シートは、ロールによる圧縮で、杭状に突き
刺りた繊維の反発力および復元力によってより高い起毛
効果を得ることができる。Furthermore, when the wet sheet is compressed by rolls, a higher napping effect can be obtained due to the repulsive force and restoring force of the pile-shaped fibers.
抄紙終了後、自動車用フィルタとに使用するためにフェ
ノール樹脂を含浸させて戻水性、耐熱性、および紙力が
濾過材に付与された。After papermaking was completed, the filter material was impregnated with phenol resin to impart water return properties, heat resistance, and paper strength for use in automobile filters.
第１図、本発明の方法に使用することのできる抄紙装置
例を示す概要図である。
１・・・抄紙スラリー、２２・・・供給バイブ、２４・
・・抄造用網、２６・・・サクションボックス、２８・
・・湿シート、２０・・・凹凸ロール。
出願人代理人 猪 股 清
ＡＢ
惰１図FIG. 1 is a schematic diagram showing an example of a papermaking apparatus that can be used in the method of the present invention. 1... Paper making slurry, 22... Supply vibe, 24.
... Papermaking net, 26... Suction box, 28.
...Wet sheet, 20...irregular roll. Applicant's agent Kiyoshi Inomata AB Ina 1
Claims (1)
し、かつ厚さ方向において被濾過流体の流れの上流側が
高密度で下流側が低密度であるような密度勾配を有する
とともに、被濾過流体の流れの上流側の濾過材の凹凸表
面に繊維の起毛層が形成されている濾過材を製造するに
あたって、次の工程を含むことを特徴とする濾過材の製
造法。 （ａ）移動する抄造用長網の片面に繊維含有抄紙原料ス
ラリーを供給するとともにその抄造網の他面から吸引し
、その際に、スラリー吸引流の方向と抄造網移動の方向
とのなす平均角度をたい積層中の少なくとも一部の繊維
が厚さ方向に配向するように設定して、抄造網上にたい
積層を形成する工程。 （ｂ）抄造網上に形成されたたい積層に、凹凸ロールを
押し付けてその層表面に凹凸形状を設ける工程。[Claims] A density gradient in which high-density areas and low-density areas are scattered in the surface direction of the filter material, and in the thickness direction, the upstream side of the flow of the fluid to be filtered is high density and the downstream side is low density. and a raised layer of fibers is formed on the uneven surface of the filter material on the upstream side of the flow of the fluid to be filtered. . (a) A fiber-containing papermaking raw material slurry is supplied to one side of a moving Fourdrinier and is sucked from the other side of the papermaking net, and at this time, the average of the direction of the slurry suction flow and the direction of movement of the papermaking net A step of forming a laminated layer on a papermaking net so that at least some of the fibers in the angled laminated layer are oriented in the thickness direction. (b) A step of pressing an uneven roll onto the laminated layer formed on the papermaking net to form an uneven shape on the surface of the layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11076085A JPS61275495A (en) | 1985-05-23 | 1985-05-23 | Production of filter material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11076085A JPS61275495A (en) | 1985-05-23 | 1985-05-23 | Production of filter material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61275495A true JPS61275495A (en) | 1986-12-05 |
Family
ID=14543868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11076085A Pending JPS61275495A (en) | 1985-05-23 | 1985-05-23 | Production of filter material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61275495A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01194913A (en) * | 1988-01-29 | 1989-08-04 | Tsuchiya Mfg Co Ltd | Coarse and fine filter medium and manufacture thereof |
| US5049267A (en) * | 1987-08-06 | 1991-09-17 | Nissan Motor Co. | Filter arrangement for a fuel tank comprising shaped mesh sections |
| JPH0426006U (en) * | 1990-06-22 | 1992-03-02 | ||
| US5288402A (en) * | 1991-04-12 | 1994-02-22 | Mitsubishi Paper Mills Limited | Liquid filter medium including a fibrillated filtering layer and an organic fiber support |
| JP2012516399A (en) * | 2009-01-28 | 2012-07-19 | ドナルドソン カンパニー，インコーポレイティド | Fiber medium and method and apparatus for forming the same |
| US9121118B2 (en) | 2011-01-28 | 2015-09-01 | Donaldson Company, Inc. | Method and apparatus for forming a fibrous media |
| US9303339B2 (en) | 2011-01-28 | 2016-04-05 | Donaldson Company, Inc. | Method and apparatus for forming a fibrous media |
| JP2017205689A (en) * | 2016-05-16 | 2017-11-24 | ヤマシンフィルタ株式会社 | Filter element |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60109398A (en) * | 1983-11-17 | 1985-06-14 | Matsushita Electric Ind Co Ltd | Piezoelectric sounding body |
-
1985
- 1985-05-23 JP JP11076085A patent/JPS61275495A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60109398A (en) * | 1983-11-17 | 1985-06-14 | Matsushita Electric Ind Co Ltd | Piezoelectric sounding body |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5049267A (en) * | 1987-08-06 | 1991-09-17 | Nissan Motor Co. | Filter arrangement for a fuel tank comprising shaped mesh sections |
| JPH01194913A (en) * | 1988-01-29 | 1989-08-04 | Tsuchiya Mfg Co Ltd | Coarse and fine filter medium and manufacture thereof |
| JPH0426006U (en) * | 1990-06-22 | 1992-03-02 | ||
| US5288402A (en) * | 1991-04-12 | 1994-02-22 | Mitsubishi Paper Mills Limited | Liquid filter medium including a fibrillated filtering layer and an organic fiber support |
| JP2012516399A (en) * | 2009-01-28 | 2012-07-19 | ドナルドソン カンパニー，インコーポレイティド | Fiber medium and method and apparatus for forming the same |
| JP2015044200A (en) * | 2009-01-28 | 2015-03-12 | ドナルドソン カンパニー，インコーポレイティド | Fiber medium and method and device for forming the same |
| US9885154B2 (en) | 2009-01-28 | 2018-02-06 | Donaldson Company, Inc. | Fibrous media |
| JP2018150671A (en) * | 2009-01-28 | 2018-09-27 | ドナルドソン カンパニー，インコーポレイティド | Fiber media and forming method and device thereof |
| US10316468B2 (en) | 2009-01-28 | 2019-06-11 | Donaldson Company, Inc. | Fibrous media |
| US9121118B2 (en) | 2011-01-28 | 2015-09-01 | Donaldson Company, Inc. | Method and apparatus for forming a fibrous media |
| US9303339B2 (en) | 2011-01-28 | 2016-04-05 | Donaldson Company, Inc. | Method and apparatus for forming a fibrous media |
| JP2017205689A (en) * | 2016-05-16 | 2017-11-24 | ヤマシンフィルタ株式会社 | Filter element |
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