JPH02149307A - Production of porous filter body made of sintered resin - Google Patents
Production of porous filter body made of sintered resinInfo
- Publication number
- JPH02149307A JPH02149307A JP26579089A JP26579089A JPH02149307A JP H02149307 A JPH02149307 A JP H02149307A JP 26579089 A JP26579089 A JP 26579089A JP 26579089 A JP26579089 A JP 26579089A JP H02149307 A JPH02149307 A JP H02149307A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- porous filter
- resin powder
- synthetic resin
- filter body
- 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
- 229920005989 resin Polymers 0.000 title claims abstract description 45
- 239000011347 resin Substances 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000000843 powder Substances 0.000 claims abstract description 40
- 238000002844 melting Methods 0.000 claims abstract description 29
- 230000008018 melting Effects 0.000 claims abstract description 29
- 239000012784 inorganic fiber Substances 0.000 claims abstract description 20
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 19
- 239000000057 synthetic resin Substances 0.000 claims abstract description 19
- 239000011812 mixed powder Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 9
- 229930182556 Polyacetal Natural products 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 5
- 229920006324 polyoxymethylene Polymers 0.000 abstract description 5
- 239000003365 glass fiber Substances 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 2
- 229920006026 co-polymeric resin Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Filtering Materials (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野Ｊ
本発明は液体の濾過に用いて好適な焼結樹脂製多孔質濾
過体の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL APPLICATION J Field of the Invention The present invention relates to a method for producing a porous sintered resin filter suitable for use in liquid filtration.
「従来の技術Ｊ
液体を濾過するものとして、ポリエチレンのごとき合成
繊維からなる濾布が広く知られており、この濾布の場合
は、布目の大きさに依存して捕集効率が設定されている
。``Prior art J: Filter cloths made of synthetic fibers such as polyethylene are widely known for filtering liquids, and in the case of these filter cloths, the collection efficiency is set depending on the size of the cloth. There is.
このような合成繊維製濾布により、たとえば、ガソリン
のごとき液体燃料の濾過するとき、布目の大きさが変化
したり、布目体が膨潤して、濾過不良を誘発することが
指摘されている。It has been pointed out that when such a synthetic fiber filter cloth is used to filter liquid fuel such as gasoline, the size of the cloth changes or the cloth swells, leading to poor filtration.
これに対処すべく、相溶性を有して融点が互いに異なる
同系の合成樹脂粉末を混合し、これを溶融ならびに固化
した多孔質濾過体が提案されていり、当該濾過体の場合
は、既述の濾過不良が起こりがたいとされている。In order to deal with this, porous filter bodies have been proposed in which synthetic resin powders of the same type that have compatibility and different melting points are mixed, melted and solidified. It is said that poor filtration is unlikely to occur.
これ以外にも、合成樹脂製の濾過体が、特開昭５０−１
４１８８５号公報、特開昭５２−７２３８３号公報など
に開示されている。In addition to this, a synthetic resin filter body is also available in JP-A-50-1
This method is disclosed in Japanese Patent Application Laid-open No. 41885, Japanese Patent Application Laid-open No. 72383/1983, and the like.
「発明が解決しようとする課題」
」−述した多孔質濾過体は、合成樹脂粉末が固化したも
のであるため、機械的特性が十分でなく、その取り扱い
中あるいは使用中の外圧により、第３図のごとき部分的
な破損がしばしば生じる。``Problems to be Solved by the Invention'' - The porous filter body described above is made of solidified synthetic resin powder, so it does not have sufficient mechanical properties, and external pressure during handling or use may cause it to deteriorate. Partial damage as shown in the figure often occurs.
上述した公知例の濾過体も、前記多孔質濾過体の欠点を
改善すべき技術的示唆がみられない。Regarding the above-mentioned known filter bodies, there is no technical suggestion to improve the drawbacks of the porous filter bodies.
本発明はこのような技術的課題に鑑み、安定した捕集性
（フィルタ機能）、十分な機械的特性、長期にわたる耐
食性を確保することのできる焼結樹脂製多孔質濾過体の
製造方法を提供しようとするものである。In view of these technical issues, the present invention provides a method for manufacturing a porous sintered resin filter that can ensure stable collection performance (filter function), sufficient mechanical properties, and long-term corrosion resistance. This is what I am trying to do.
「課題を解決するための手段」
本発明に係る焼結樹脂製多孔質濾過体の製造方法は、所
期の目的を達成するため、相溶性を有し、融点が互いに
異なる二種類以上の合成樹脂粉末を混合して一次混合粉
末をつくるとともに、該一次混合粉末中に細分化された
無機質繊維を混入して二次混合粉末つくり、その後、上
記二次混合粉末中の低融点合成樹脂粉末のみを溶融なら
びに固化して、立体形状を有する無機質繊維入りの焼結
樹脂製多孔質濾過体を形成することを特徴とする。"Means for Solving the Problems" In order to achieve the intended purpose, the method for producing a porous sintered resin filter according to the present invention involves the synthesis of two or more types of sintered resin porous filters that are compatible and have different melting points. Resin powders are mixed to create a primary mixed powder, and finely divided inorganic fibers are mixed into the primary mixed powder to create a secondary mixed powder, and then only the low melting point synthetic resin powder in the secondary mixed powder is mixed. is melted and solidified to form a sintered resin porous filter body containing inorganic fibers having a three-dimensional shape.
「作用」
本発明方法において、低融点樹脂粉末のみを溶融したと
き、高融点樹脂粉末は軟化するものの溶融しないので、
これらの樹脂を室温まで温度降下させることにより、固
化した樹脂中に多数の微細な空孔が形成される。"Function" In the method of the present invention, when only the low melting point resin powder is melted, the high melting point resin powder softens but does not melt.
By lowering the temperature of these resins to room temperature, many fine pores are formed in the solidified resins.
この際、溶融する低融点樹脂粉末と軟化する高融点樹脂
粉末とが相溶性を有するので、これらの相対接着性が高
く両樹脂が良好に一体化される。At this time, since the melting low melting point resin powder and the softening high melting point resin powder have compatibility, their relative adhesiveness is high and both resins are well integrated.
しかも、無機質繊維が高融点樹脂粉末に絡みつき、かつ
、低融点樹脂粉末にて接着されるので、全体の機械的特
性が飛躍的に向上する。Moreover, since the inorganic fibers are entangled with the high melting point resin powder and bonded with the low melting point resin powder, the overall mechanical properties are dramatically improved.
「実 施 例」
本発明に係る焼結樹脂製多孔質濾過体の製造方法につき
、図面を参照して説明する。"Example" A method for manufacturing a sintered resin porous filter according to the present invention will be described with reference to the drawings.
第１図は本発明方法により製造された焼結樹脂製多孔質
濾過体（以下、多孔質濾過体ｌＯという）の−例を示す
。FIG. 1 shows an example of a porous filter body made of sintered resin (hereinafter referred to as porous filter body IO) manufactured by the method of the present invention.
第１図において、多孔質濾過体１０は、一端に開口部１
２、他端に閉塞部１３を有する断面円形の筒体１１から
なる。In FIG. 1, a porous filter 10 has an opening 1 at one end.
2. Consists of a cylindrical body 11 with a circular cross section and a closed portion 13 at the other end.
かかる多孔質濾過体１０の場合、第２図の拡大図を参照
して明らかなように、多数の樹脂粒子１４と多数の微細
な無機質繊維１５とが、多数の空孔１８をもとなって一
体化されている。In the case of such a porous filter 10, as is clear from the enlarged view of FIG. 2, a large number of resin particles 14 and a large number of fine inorganic fibers 15 form a large number of pores 18. It is integrated.
つぎに、多孔質濾過体ＩＱの具体的な製造例について述
べる。Next, a specific manufacturing example of the porous filter IQ will be described.
多孔質濾過体１０は、複数の合成樹脂粉末と細分化され
た無機質繊維とを素材として製造される。The porous filter body 10 is manufactured using a plurality of synthetic resin powders and finely divided inorganic fibers as raw materials.
複数の合成樹脂粉末は、相溶性を有していて、融点が互
いに異なるものからなり、具体的には、ポリアセタール
、ナイロン、ポリエチレンなどの合成樹脂粉末が採用さ
れる。The plurality of synthetic resin powders are compatible and have different melting points, and specifically, synthetic resin powders such as polyacetal, nylon, and polyethylene are used.
これら合成樹脂粉末相互は、その融点が少なくとも５°
Ｃ以上相違していれば有効である。These synthetic resin powders each have a melting point of at least 5°
It is valid if the difference is C or more.
上記の素材として、低密度あるいは高密度ポリエチレン
、ポリプロピレンの単重合樹脂や共重合樹脂など、が必
要に応じて使用される。As the above-mentioned material, low-density or high-density polyethylene, polypropylene monopolymer resin, copolymer resin, etc. are used as necessary.
無機質繊維としては、たとえば、ガラスファイバ、カー
ボンファイバなどが採用される。As the inorganic fiber, for example, glass fiber, carbon fiber, etc. are employed.
多孔質濾過体１０をつくるとき、所定の各樹脂を粉砕機
により粉末化し、これらの粉末を一定の粒度ごとに区分
けし、これらのうちから、所定粒度の合成樹脂粉末を選
択して用いる。When making the porous filter body 10, each predetermined resin is pulverized by a pulverizer, these powders are divided into predetermined particle sizes, and a synthetic resin powder with a predetermined particle size is selected from among these and used.
より具体的には、２０〜２５メツシュ程度のポリアセタ
ール単重合樹脂粉末８０ｇと、１００〜１５０メツシユ
程度のポリアセタール共重合樹脂粉末２０ｇとを均一に
撹拌混合して、低融点樹脂粉末と高融点樹脂粉末との混
合物たる一次混合粉末をつくる。More specifically, 80 g of polyacetal monopolymer resin powder of about 20 to 25 meshes and 20 g of polyacetal copolymer resin powder of about 100 to 150 meshes are uniformly stirred and mixed to form a low melting point resin powder and a high melting point resin powder. A primary mixed powder is made.
つぎに、長さ０．１〜１．５ｍｍに細断されたガラスフ
ァイバ製の無機質繊維１０ｇを上記一次混合粉末中に混
入し、これらを十分に撹拌して、二次混合粉末をつくる
。Next, 10 g of glass fiber inorganic fibers cut into pieces having a length of 0.1 to 1.5 mm are mixed into the primary mixed powder, and the mixture is sufficiently stirred to prepare a secondary mixed powder.
成形手段としては、所定の成形形状を有する金型本体と
金型蓋体とを用意し、これらの内面にシリコン系の離型
剤しておく。As a molding means, a mold body and a mold lid having a predetermined molding shape are prepared, and a silicone-based mold release agent is applied to the inner surfaces of these mold bodies.
しかる後、金型本体内に二次混合粉末を充填するととも
に、その上部より金型蓋体を被せ、油圧機を介して、こ
れら金型本体、金型蓋体相互を締めつける。Thereafter, the secondary mixed powder is filled into the mold body, a mold lid is placed over the mold body, and the mold body and the mold lid are tightened together via a hydraulic machine.
こうして、二次混合粉末を圧縮した後は、上記金型を加
熱炉内に入れ、これを１５５°Ｃまで急速加熱し、当該
金型が１５５°Ｃに達した後は、加熱速度を落とし、２
℃／ｍｉｎにて最高温度１６７℃になるまで加熱を続行
する。After compressing the secondary mixed powder in this way, the mold is placed in a heating furnace and rapidly heated to 155°C. After the mold reaches 155°C, the heating rate is reduced. 2
Heating is continued at a rate of 167° C./min until a maximum temperature of 167° C. is reached.
」一連した加熱処理を終えた後、金型を室温まで自然冷
却し、その金型内から固化した成形物すなわち合成樹脂
製の多孔質濾過体１０を取り出す。After completing a series of heat treatments, the mold is naturally cooled to room temperature, and the solidified molded product, that is, the porous filter body 10 made of synthetic resin, is taken out from the mold.
かくて得られた多孔質濾過体ｌＯは、つぎの通りである
。The porous filter lO thus obtained is as follows.
前述した加熱処理において、高融点樹脂粉末を基準にし
て、その高融点樹脂粉末の融点よりも低い温度を−・定
時間保持したとき、低融点樹脂粉末が溶融し、当該溶融
樹脂が軟化状態の高融点樹脂粉末表面に溶融接着するの
で、両者が強力に一体化される。In the heat treatment described above, when a temperature lower than the melting point of the high melting point resin powder is maintained for a certain period of time, the low melting point resin powder melts and the molten resin is in a softened state. Since it melts and adheres to the surface of the high melting point resin powder, the two are strongly integrated.
低融点樹脂粉末が溶融状態にあるとき、無機質繊維とし
てのガラスファイバは、その溶融樹脂中に定着すること
なく介在しているが、その溶融樹脂が固化したとき、高
融点樹脂粉末の表面、粉末相互に接触して、これらと一
体に固定される。When the low melting point resin powder is in a molten state, the glass fibers as inorganic fibers are interposed in the molten resin without being fixed, but when the molten resin is solidified, the surface of the high melting point resin powder, the powder They contact each other and are fixed together.
ゆえに、低融点樹脂粉末は、高融点樹脂粉末相互、なら
びに、高融点樹脂粉末と無機質繊維との接着機能をはた
し、無機質繊維は、樹脂の補強材となる。Therefore, the low melting point resin powder functions to bond the high melting point resin powders to each other and the high melting point resin powder to the inorganic fibers, and the inorganic fibers serve as a reinforcing material for the resin.
なお、無機質繊維の場合、前記に例示した量であれば、
多孔質濾過体の空孔に対する影響、すなわち、空孔自体
の縮小とか、空孔率の低下がほとんどみられない。In addition, in the case of inorganic fibers, if the amounts are as exemplified above,
There is almost no effect on the pores of the porous filter, ie, a reduction in the pores themselves or a decrease in porosity.
本発明方法により製造された焼結樹脂製多孔質濾過体は
、−例として、ガソリンのごとき液体燃料を濾過すると
きに用いられる。The porous sintered resin filter produced by the method of the present invention is used, for example, when filtering liquid fuel such as gasoline.
「発明の効果ｊ
以」−説明した通り、本発明方法によるときは相溶性を
有し、融点が互いに異なる二種類以上の合成樹脂粉末、
および、細分化された無機質繊維の混合物を素材とし、
低融点合成樹脂粉末のみを溶融ならびに固化して、立体
形状を有する無機質繊維入りの焼結樹脂製多孔質濾過体
を形成するから、」二記二様の合成樹脂粉末を主体にし
て、定形性を具備したフィルタ機能（捕集性）の高い多
孔質濾過体を得ることができるとともに、無機質繊維を
主体にして、その多孔質濾過体に十分な機械的特性をも
付与することができ、しかも、低融点合成樹脂粉末を溶
融、固化するだけでよいので、液体源適用の多孔質濾過
体を簡易かつ合理的に製造することができる。"Effects of the Invention J and Beyond" - As explained, when the method of the present invention is used, two or more types of synthetic resin powders that are compatible and have different melting points,
And, made of a mixture of finely divided inorganic fibers,
Only the low melting point synthetic resin powder is melted and solidified to form a sintered resin porous filter body containing inorganic fibers that has a three-dimensional shape. It is possible to obtain a porous filter body with a high filtering function (collection ability), and it is also possible to impart sufficient mechanical properties to the porous filter body using inorganic fibers as the main component. Since it is only necessary to melt and solidify the low melting point synthetic resin powder, it is possible to easily and rationally manufacture a porous filter body for use as a liquid source.
【図面の簡単な説明】
第１図は本発明方法を介して製造される焼結樹脂製多孔
質濾過体の一例を示した斜視図、第２図はその多孔質濾
過体の一部を拡大して示した説明図、第３図は本発明の
先行技術により製造された多孔質濾過体の破損状態を示
した斜視図である。
１０・・・・・・多孔質濾過体
１１・・・・・・筒体
１２・・・・・・閉塞部
１３・・・・・・開口部
１４・・・・・・樹脂粒子
１５・・・・・・無機質繊維
１８・・・・・・空孔
代理人 弁理士 斎 藤 義 雄
図[Brief Description of the Drawings] Fig. 1 is a perspective view showing an example of a porous sintered resin filter produced by the method of the present invention, and Fig. 2 is an enlarged view of a part of the porous filter. FIG. 3 is a perspective view showing a damaged state of a porous filter manufactured by the prior art of the present invention. 10... Porous filter body 11... Cylindrical body 12... Closing part 13... Opening part 14... Resin particles 15... ...Inorganic fiber 18 ... Hollow agent Patent attorney Yoshizu Saito
Claims (1)
脂粉末を混合して一次混合粉末をつくるとともに、該一
次混合粉末中に細分化された無機質繊維を混入して二次
混合粉末つくり、その後、上記二次混合粉末中の低融点
合成樹脂粉末のみを溶融ならびに固化して、立体形状を
有する無機質繊維入りの焼結樹脂製多孔質濾過体を形成
することを特徴とする焼結樹脂製多孔質濾過体の製造方
法。Mixing two or more types of synthetic resin powders that are compatible and have different melting points to create a primary mixed powder, and mixing finely divided inorganic fibers into the primary mixed powder to create a secondary mixed powder, Thereafter, only the low melting point synthetic resin powder in the secondary mixed powder is melted and solidified to form a porous sintered resin filter containing inorganic fibers having a three-dimensional shape. Method for manufacturing a porous filter body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26579089A JPH02149307A (en) | 1989-10-12 | 1989-10-12 | Production of porous filter body made of sintered resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26579089A JPH02149307A (en) | 1989-10-12 | 1989-10-12 | Production of porous filter body made of sintered resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02149307A true JPH02149307A (en) | 1990-06-07 |
Family
ID=17422081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26579089A Pending JPH02149307A (en) | 1989-10-12 | 1989-10-12 | Production of porous filter body made of sintered resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02149307A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034155C (en) * | 1994-12-09 | 1997-03-05 | 天津市长城过滤设备厂 | Short fibre sintered filter core and its preparation technology |
| DE10357197A1 (en) * | 2003-12-08 | 2005-07-07 | Herding Gmbh Filtertechnik | Filter element with heat resistance and / or chemical resistance |
| WO2010059165A1 (en) * | 2008-11-21 | 2010-05-27 | Alliance For Sustainable Energy, Llc | Porous block nanofiber composite filters |
| CN105727629A (en) * | 2008-11-21 | 2016-07-06 | 可持续能源联盟有限公司 | Filter made of nanofiber composite, method for preparing composite and filtering system |
| CN106457076A (en) * | 2014-06-02 | 2017-02-22 | 曼·胡默尔有限公司 | Filter systems and filter elements with glass fiber filter media and sintered bodies |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50141665A (en) * | 1974-05-02 | 1975-11-14 | ||
| JPS5272383A (en) * | 1975-12-13 | 1977-06-16 | Unitika Ltd | Porous molded product with chelate-forming capacity and its preparatio n |
-
1989
- 1989-10-12 JP JP26579089A patent/JPH02149307A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50141665A (en) * | 1974-05-02 | 1975-11-14 | ||
| JPS5272383A (en) * | 1975-12-13 | 1977-06-16 | Unitika Ltd | Porous molded product with chelate-forming capacity and its preparatio n |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034155C (en) * | 1994-12-09 | 1997-03-05 | 天津市长城过滤设备厂 | Short fibre sintered filter core and its preparation technology |
| DE10357197A1 (en) * | 2003-12-08 | 2005-07-07 | Herding Gmbh Filtertechnik | Filter element with heat resistance and / or chemical resistance |
| WO2010059165A1 (en) * | 2008-11-21 | 2010-05-27 | Alliance For Sustainable Energy, Llc | Porous block nanofiber composite filters |
| CN105727629A (en) * | 2008-11-21 | 2016-07-06 | 可持续能源联盟有限公司 | Filter made of nanofiber composite, method for preparing composite and filtering system |
| US9409111B2 (en) | 2008-11-21 | 2016-08-09 | Global Water Group, Incorporated | Porous block nanofiber composite filters |
| CN106457076A (en) * | 2014-06-02 | 2017-02-22 | 曼·胡默尔有限公司 | Filter systems and filter elements with glass fiber filter media and sintered bodies |
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