JP2925190B2 - Method for producing filter paper for oil filter - Google Patents

Method for producing filter paper for oil filter

Info

Publication number
JP2925190B2
JP2925190B2 JP29606089A JP29606089A JP2925190B2 JP 2925190 B2 JP2925190 B2 JP 2925190B2 JP 29606089 A JP29606089 A JP 29606089A JP 29606089 A JP29606089 A JP 29606089A JP 2925190 B2 JP2925190 B2 JP 2925190B2
Authority
JP
Japan
Prior art keywords
base
paper
fine fibers
filter
fibers
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.)
Expired - Lifetime
Application number
JP29606089A
Other languages
Japanese (ja)
Other versions
JPH03157112A (en
Inventor
克春 小川原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokyo Roki Co Ltd
Original Assignee
Tokyo Roki Co Ltd
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 Tokyo Roki Co Ltd filed Critical Tokyo Roki Co Ltd
Priority to JP29606089A priority Critical patent/JP2925190B2/en
Publication of JPH03157112A publication Critical patent/JPH03157112A/en
Application granted granted Critical
Publication of JP2925190B2 publication Critical patent/JP2925190B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Filtering Materials (AREA)
  • Paper (AREA)

Description

【発明の詳細な説明】 《産業上の利用分野》 この発明は、空隙率をほぼ一定に保ったまま比表面積
を高め、エンジンオイル中に生成するサブミクロンオー
ダーカーボン微粒子を高効率で吸着捕捉できるようにし
たオイルフィルタ用濾紙の製造方法に関する。
DETAILED DESCRIPTION OF THE INVENTION << Industrial application >> The present invention can increase the specific surface area while keeping the porosity almost constant, and can adsorb and capture submicron-order carbon fine particles generated in engine oil with high efficiency. The present invention relates to a method for producing a filter paper for an oil filter as described above.

《発明の背景》 オイルフィルタ用濾紙はライフが長く、かつ高効率で
あることが要求される。
<< Background of the Invention >> A filter paper for an oil filter is required to have a long life and high efficiency.

濾紙の材料として用いられている天然セルロース繊維
を主体とする従来型の濾紙でロングライフ化を図ろうと
する場合には、紙層密度を小さくして空隙率を大きくす
れば良いが、紙層内での繊維比表面積が小さくなるため
にカーボン微粒子との接触面積が小さくなり、カーボン
の捕捉率が小さくなる。
When trying to extend the life of a conventional filter paper mainly composed of natural cellulose fibers used as a material for the filter paper, it is sufficient to reduce the paper layer density and increase the porosity. In this case, the specific surface area of the fiber becomes small, so that the contact area with the carbon fine particles becomes small, and the capture ratio of carbon becomes small.

またその逆に紙層密度を大きくすれば繊維比表面積が
大きくなるので捕捉効率は向上するが、密度の増加に伴
い空隙が確実に減少するため、初期通油抵抗が高くな
り、また、カーボンの捕捉により短時間で圧力損失が増
大するためフィルタライフは短くなる。
Conversely, if the density of the paper layer is increased, the specific surface area of the fiber is increased, so that the trapping efficiency is improved.However, since the voids are surely reduced with the increase in the density, the initial oil flow resistance is increased, and the carbon The filter life is shortened because the pressure loss increases in a short time due to the capture.

したがって、ライフと捕捉効率の関係は相反する課題
となっており、いずれか一方の特性を犠牲にして他方の
特性を向上させることしか出来なかった。
Therefore, the relationship between the life and the trapping efficiency is a contradictory issue, and only one of the characteristics can be improved at the expense of the other.

この発明は以上の相反する課題を解決するものであっ
て、フィルタライフを保ちつつカーボンの捕捉率を向上
できるようにしたオイルフィルタ用濾紙の製造方法を提
供することを目的とする。
An object of the present invention is to solve the above contradictory problems, and an object of the present invention is to provide a method of manufacturing a filter paper for an oil filter, which can improve the capture rate of carbon while maintaining the filter life.

《課題を解決するための手段》 前記課題を達成するため、この発明は、抄造された基
材繊維からなる原紙を微細繊維が分散された分散媒中に
浸漬し、前記原紙の基材表面に微細繊維を付着させる工
程と、乾燥させる工程と、接着剤を含浸させて基材表面
に付着した微細繊維を定着させる工程とからなってい
る。
<< Means for Solving the Problems >> In order to achieve the above objects, the present invention provides a method of immersing a base paper made of base paper fibers into a dispersion medium in which fine fibers are dispersed, and applying the base paper to the base paper surface of the base paper. The method includes a step of attaching fine fibers, a step of drying, and a step of impregnating an adhesive to fix the fine fibers attached to the surface of the base material.

《作 用》 以上の構成によれば、基材繊維間の空隙率に応じた紙
層密度に形成でき、微細繊維によってサブミクロンオー
ダのカーボン粒子を捕捉することができる。
<< Operation >> According to the above configuration, the paper layer density can be formed according to the porosity between the base fibers, and the carbon fibers of the order of submicron can be captured by the fine fibers.

《実 施 例》 以下、この発明の一実施例を図面を用いて詳細に説明
する。
<< Embodiment >> Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

まず本発明の製造方法は、以下の工程からなってい
る。
First, the manufacturing method of the present invention includes the following steps.

抄造工程において乾燥ドラムを通過した基材繊維から
なる原紙を微細繊維が良く分散された分散媒中に浸漬す
る。
In the papermaking process, the base paper made of the base fiber passed through the drying drum is immersed in a dispersion medium in which fine fibers are well dispersed.

微細繊維が含まれた分散媒を含浸した原紙は、その後
直ちに乾燥させる。
The base paper impregnated with the dispersion medium containing the fine fibers is dried immediately thereafter.

引き続きフェノール系樹脂樹脂を紙の表面に含浸させ
ることで、付着した微細繊維を基材繊維の表面に定着す
る。
Subsequently, by impregnating the surface of the paper with the phenolic resin resin, the attached fine fibers are fixed on the surface of the base fiber.

第1図,第2図は以上の工程により形成された濾紙の
顕微鏡的模式図を示すもので、基材繊維1間は適度な空
隙2を有して絡まりあった状態にあり、その表面には微
細繊維3がランダムに付着している状態が示されてい
る。
FIG. 1 and FIG. 2 are microscopic schematic views of the filter paper formed by the above-described steps, and the base fibers 1 are in a state of being entangled with an appropriate gap 2 between the base fibers 1. Indicates a state in which the fine fibers 3 are randomly attached.

そして、微細繊維3の層によって増加した比表面積に
よってカーボン微粒子との接触確率は高くなり、また、
経時的に微細繊維3の層はカーボンを、その体積内部に
保持するため、カーボン捕捉容量は増加する。
And the contact probability with the carbon fine particles is increased by the specific surface area increased by the layer of the fine fibers 3, and
Over time, the layer of fine fibers 3 holds the carbon inside its volume, so the carbon capture capacity increases.

ところが、このような機能が得られるにもかかわらず
後述する理由から明らかなように、空隙2は十分大きく
確保されるため、圧力損失が上昇する変化率は従来の同
一紙層密度の濾紙と大差なく同等のライフを確保できる
ことになる。
However, as apparent from the reason described later, although the function is obtained, the gap 2 is sufficiently large, so that the rate of change in the pressure loss rises is significantly different from that of the conventional filter paper having the same paper layer density. The same life can be secured without it.

なお、以上の構成において、微細繊維3がその効果を
発揮するには、基材繊維1の物性をきめる原料配合と、
濾紙が捕捉しようとするカーボン微粒子の粒径分布に合
致する微細繊維径およびその固着率がその要因となる。
In the above-described configuration, in order for the fine fibers 3 to exhibit the effect, a raw material mixture for determining the physical properties of the base fiber 1
The factors are the fine fiber diameter and the sticking rate that match the particle size distribution of the carbon fine particles to be captured by the filter paper.

つまり、第3図に示すように原紙層密度の小さい基材
繊維1では微細繊維3の着床面積が小さいため、大量の
固着は出来ないが、比表面積の変化率は大きくなる。一
方密度の大きい基材繊維1では着床面積が大きいために
固着率の幅は大きく取れる。
That is, as shown in FIG. 3, the base fiber 1 having a low density of the base paper layer has a small landing area of the fine fiber 3, so that a large amount of fixation cannot be performed, but the rate of change of the specific surface area is large. On the other hand, the base fiber 1 having a high density has a large fixing area because the landing area is large.

しかし、効果が現れる固着率は低密度の基材繊維より
も高めとなる。また、いずれの原料配合の場合でも固着
率が高すぎると微細繊維1の凝集が起こり、紙層空間2
を埋めてしまうために、効果が低下することになる。
However, the sticking rate at which the effect appears is higher than that of the low-density base fiber. Also, in any of the raw material blends, if the fixation rate is too high, the fine fibers 1 agglomerate, and the paper layer space 2
, The effect is reduced.

これらを勘案して種々配合を変えたところ、基材繊維
1の径が10〜80μm、微細繊維3の径が0.2〜1μmの
範囲で、かつ、固着率が基材重量に対して3〜30wt%の
範囲であることが好ましく、この範囲の固着率のとき繊
維表面積は、15〜200%増加するのに対して、空隙2の
減少は0.5〜4%に止まることが判明している。
In consideration of these, when various compositions were changed, the diameter of the base fiber 1 was in the range of 10 to 80 μm, the diameter of the fine fiber 3 was in the range of 0.2 to 1 μm, and the sticking rate was 3 to 30 wt. %, And it has been found that the fiber surface area increases by 15 to 200% while the decrease in the void 2 is only 0.5 to 4% at a fixing rate in this range.

第4図はその好ましい範囲内でのライフと濾過効率の
関係を現すものであって、ライフL0を目標とした場合
に、従来の濾紙の効率をη1とすると、本発明の濾紙の
斜線で示す好ましい範囲内においてはη2まで向上する
ことが理解される。
FIG. 4 shows the relationship between the life and the filtration efficiency within the preferred range. When the life L0 is targeted and the efficiency of the conventional filter paper is η1, the filter paper of the present invention is shown by oblique lines. It can be seen that within the preferred range, it is improved to η2.

また、効率η0を目標に設定すると、従来の濾紙のラ
イフがL1であるのに対し、L2まで長期化できることが示
されている。
Further, it is shown that when the efficiency η0 is set as a target, the life of the conventional filter paper is L1 but can be extended to L2.

《発明の効果》 以上実施例によって詳細に説明したように、この発明
によるオイルフィルタ用濾紙の製造方法にあっては、基
材からなる原紙に微細繊維を付着し、定着させるだけの
工程を付加するだけで、基材繊維間の空隙率に応じた紙
層密度に形成できるので、微細繊維によってサブミクロ
ンオーダのカーボン粒子を捕捉することができ、ロング
ライフを確保しつつカーボン微粒子を吸着,捕捉できる
オイルフィルタ用濾紙の製造を簡単に出来る利点があ
る。
<< Effects of the Invention >> As described in detail in the above embodiments, in the method for producing a filter paper for an oil filter according to the present invention, a process of merely attaching and fixing fine fibers to a base paper made of a base material is added. Just by doing so, it is possible to form a paper layer density according to the porosity between base fibers, so that fine fibers can capture carbon particles on the order of submicron, and adsorb and capture carbon particles while ensuring long life There is an advantage that the production of a filter paper for an oil filter can be simplified.

【図面の簡単な説明】[Brief description of the drawings]

第1図はこの発明によるオイルフィルタ用濾紙の顕微鏡
的な模式図、第2図はさらに拡大した顕微鏡的模式図、
第3図は基材密度と微細繊維の固着率との関係を示すグ
ラフ、第4図はこの発明による濾紙のライフと効率との
関係を示すグラフである。 1……基材 2……空隙 3……微細繊維
FIG. 1 is a microscopic schematic diagram of a filter paper for an oil filter according to the present invention, FIG. 2 is a further enlarged microscopic schematic diagram,
FIG. 3 is a graph showing the relationship between the density of the base material and the fixing rate of the fine fibers, and FIG. 4 is a graph showing the relationship between the life and efficiency of the filter paper according to the present invention. 1 ... substrate 2 ... voids 3 ... fine fibers

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】抄造された基材繊維からなる原紙を微細繊
維が分散された分散媒中に浸漬し、前記原紙の基材表面
に前記微細繊維を付着させる工程と、乾燥させる工程
と、接着剤を含浸させて基材表面に付着した微細繊維を
定着させる工程とからなることを特徴とするオイルフィ
ルタ用濾紙の製造方法。
1. A step of immersing a base paper made of paper-made base fibers in a dispersion medium in which fine fibers are dispersed, causing the fine fibers to adhere to the base surface of the base paper, a step of drying, and a step of bonding. Impregnating an agent to fix the fine fibers attached to the surface of the base material.
【請求項2】上記基材繊維の直径が10〜80μmであり、
上記微細繊維の直径が0.2〜1μmであって、基材重量
に対して前記微細繊維が3〜30w%の範囲で固着されて
いることを特徴とする請求項1記載のオイルフィルタ用
濾紙の製造方法。
2. The base fiber has a diameter of 10 to 80 μm,
2. A filter paper for an oil filter according to claim 1, wherein said fine fibers have a diameter of 0.2 to 1 [mu] m, and said fine fibers are fixed in a range of 3 to 30% by weight based on the weight of the substrate. Method.
JP29606089A 1989-11-16 1989-11-16 Method for producing filter paper for oil filter Expired - Lifetime JP2925190B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29606089A JP2925190B2 (en) 1989-11-16 1989-11-16 Method for producing filter paper for oil filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29606089A JP2925190B2 (en) 1989-11-16 1989-11-16 Method for producing filter paper for oil filter

Publications (2)

Publication Number Publication Date
JPH03157112A JPH03157112A (en) 1991-07-05
JP2925190B2 true JP2925190B2 (en) 1999-07-28

Family

ID=17828584

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29606089A Expired - Lifetime JP2925190B2 (en) 1989-11-16 1989-11-16 Method for producing filter paper for oil filter

Country Status (1)

Country Link
JP (1) JP2925190B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1736543B (en) * 2004-08-11 2011-10-19 弗利特加尔公司 Acid-neutralizing filter media

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001054796A2 (en) * 2000-01-27 2001-08-02 Honeywell International Inc. Impregnated filter
FR2886975B1 (en) * 2005-06-08 2010-12-17 Peugeot Citroen Automobiles Sa ENGINE LUBRICATING OIL FILTRATION SYSTEM
JP4558640B2 (en) * 2005-12-22 2010-10-06 トヨタ紡織株式会社 Filter media, fluid filter, and engine oil filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1736543B (en) * 2004-08-11 2011-10-19 弗利特加尔公司 Acid-neutralizing filter media

Also Published As

Publication number Publication date
JPH03157112A (en) 1991-07-05

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