JPH09271618A - Convenient filtration filter - Google Patents
Convenient filtration filterInfo
- Publication number
- JPH09271618A JPH09271618A JP8025696A JP8025696A JPH09271618A JP H09271618 A JPH09271618 A JP H09271618A JP 8025696 A JP8025696 A JP 8025696A JP 8025696 A JP8025696 A JP 8025696A JP H09271618 A JPH09271618 A JP H09271618A
- Authority
- JP
- Japan
- Prior art keywords
- filtration filter
- porous body
- simple filtration
- molecular weight
- shape
- 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
Landscapes
- Filtering Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、濾過フィルタと濾
過対象液体を注ぎ込む保液容器部分とが一体化している
簡易濾過フィルタに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple filtration filter in which a filtration filter and a liquid retaining container portion into which a liquid to be filtered is poured are integrated.
【０００２】[0002]
【従来の技術】従来から、フィルタと濾過対象液体を注
ぎ込む保液容器部分とが一体化されている簡易濾過フィ
ルタとしては、プラスチック、陶器、ガラス等からな
る保液容器部分のスリットを有する底部に濾紙等のフィ
ルタ材を取り付けたものや、不織布を賦形し立体化し
たもの等がある。2. Description of the Related Art Conventionally, as a simple filtration filter in which a filter and a liquid retaining container portion into which a liquid to be filtered is poured are integrally formed, a liquid retaining container portion made of plastic, ceramics, glass or the like has a bottom portion having a slit. There are those in which a filter material such as filter paper is attached, and those in which a non-woven fabric is shaped and three-dimensionalized.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記
のタイプでは、濾過対象液体の漏れが起きないよう上記
容器部分の底部にフィルタ材を確実に取り付けなければ
ならず、煩雑な手間を要するという問題がある。また、
上記のタイプでは、濾過対象液体を注ぎ込んだ場合に
容器形状が変形しないだけの充分な剛性を得るのが難し
いという問題がある。なお、上記の不織布賦形品にお
いて、より剛性を高めるために、例えば、エンボスロー
ルを用いて加熱加圧して、複数枚の不織布を固着させる
方法が提案され、一部で実施されている。しかし、この
方法では、不織布の繊維同士の間の目が部分的に圧着さ
れて潰れてしまうため、均一な透過性を有する簡易濾過
フィルタを得るのが難しいという問題もある。However, in the above type, there is a problem that a filter material must be surely attached to the bottom of the container portion so that the liquid to be filtered does not leak, which is troublesome. is there. Also,
The above type has a problem that it is difficult to obtain sufficient rigidity so that the shape of the container is not deformed when the liquid to be filtered is poured. In order to further increase the rigidity of the above-mentioned non-woven fabric shaped article, for example, a method of heating and pressurizing using an embossing roll to fix a plurality of non-woven fabrics has been proposed and partially implemented. However, this method also has a problem that it is difficult to obtain a simple filtration filter having uniform permeability because the eyes between the fibers of the non-woven fabric are partially pressed and crushed.
【０００４】本発明は、このような事情に鑑みなされた
もので、容器形状を保持するのに充分な剛性および均一
な透過性を有し、しかも容易かつ確実に得ることのでき
る簡易濾過フィルタの提供をその目的とする。The present invention has been made in view of the above circumstances, and provides a simple filtration filter that has sufficient rigidity and uniform permeability to retain the shape of a container and that can be easily and reliably obtained. The purpose is to provide.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
め、本発明の簡易濾過フィルタは、超高分子量ポリエチ
レンを主体とする多孔質体からなり、上記多孔質体の少
なくとも一部が、濾過対象液体を注入するための保形性
ある凹状部となるよう賦形されているという構成をと
る。In order to achieve the above object, the simple filtration filter of the present invention comprises a porous body mainly composed of ultra high molecular weight polyethylene, and at least a part of the porous body is filtered. It is shaped so as to have a shape-retaining concave portion for injecting the target liquid.
【０００６】すなわち、本発明者らは、濾過対象液体を
注ぎ込んでも容器形状が充分に保持され、しかも均一な
透過性を有する簡易濾過フィルタについて、一連の研究
を重ねた。その結果、超高分子量ポリエチレンを主体と
する多孔質体の少なくとも一部を凹状部となるよう賦形
し、この凹状部に濾過対象液体を注入すると、上記要求
を満足させることができることを見いだし本発明に到達
した。That is, the inventors of the present invention have conducted a series of studies on a simple filtration filter in which the shape of the container is sufficiently maintained even when the liquid to be filtered is poured and which has uniform permeability. As a result, it was found that the above requirements can be satisfied by shaping at least a part of the porous body mainly composed of ultra-high molecular weight polyethylene into a concave portion and injecting the liquid to be filtered into the concave portion. The invention was reached.
【０００７】なお、本発明の簡易濾過フィルタにおい
て、上記多孔質体として、超高分子量ポリエチレンを主
体とする粉体を焼結して得られる多孔質体を用いたもの
は、繊維脱落が起きず、またバインダーの溶出もないと
いう利点を有する。In the simple filtration filter of the present invention, when the porous body obtained by sintering a powder mainly composed of ultra-high molecular weight polyethylene is used as the porous body, the fibers do not fall off. Moreover, it has an advantage that the binder is not eluted.
【０００８】また、本発明の簡易濾過フィルタにおい
て、上記多孔質体を照射線量５〜３００ｋＧｙの電子線
またはγ線を照射して架橋したものは、より剛性が高く
耐熱性にも優れているという利点を有する。そして、そ
のような簡易濾過フィルタを容易かつ確実に得ることが
できる。Further, in the simple filtration filter of the present invention, the porous body is crosslinked by irradiating it with an electron beam or γ-ray having an irradiation dose of 5 to 300 kGy, which is said to have higher rigidity and excellent heat resistance. Have advantages. And such a simple filtration filter can be obtained easily and reliably.
【０００９】ここで、本発明における「超高分子量ポリ
エチレン」とは、分子量が５０万以上のもののことであ
り、通常のポリエチレン（分子量約１０万以下）と区別
して用いている。また、「主体とする」とは、全てが超
高分子量ポリエチレンのみからなる場合も含む趣旨であ
る。そして、「濾過対象液体」とは、濾過を行おうとす
る液体のことである。Here, the "ultra high molecular weight polyethylene" in the present invention has a molecular weight of 500,000 or more, and is used in distinction from ordinary polyethylene (molecular weight of about 100,000 or less). The term "mainly composed" is intended to include the case where all are made of ultra-high molecular weight polyethylene. Then, the “liquid to be filtered” is a liquid to be filtered.
【００１０】[0010]
【発明の実施の形態】つぎに、本発明の実施の形態につ
いて説明する。BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described.
【００１１】本発明の簡易濾過フィルタは、例えば図１
に示すように、全体が多孔質体１からなり、中央に半球
状の凹状部１ａが形成され、全体として保形性を備えて
いる。The simple filtration filter of the present invention is shown in FIG.
As shown in (1), the whole is made of the porous body 1, and the hemispherical concave portion 1a is formed at the center, and the shape is retained as a whole.
【００１２】上記多孔質体１に用いられる材料として
は、超高分子量ポリエチレン（以下「ＵＨＭＷＰＥ」と
略す）を必ず用いなければならない。このＵＨＭＷＰＥ
の分子量（粘度法による測定）は、前述のように、通常
のポリエチレンが分子量約１０万以下であるのに対し、
５０万以上である。このようなＵＨＭＷＰＥの市販品と
しては、例えば「ハイゼックスミリオン」（三井石油化
学工業社製）、「ホスタレンＧＵＲ」（ヘキスト社製）
等が知られている。Ultra high molecular weight polyethylene (hereinafter abbreviated as "UHMWPE") must be used as a material for the porous body 1. This UHMWPE
As for the molecular weight (measured by a viscosity method) of, as described above, the molecular weight of ordinary polyethylene is about 100,000 or less,
500,000 or more. Examples of commercially available products of such UHMWPE include “Hi-Zex Million” (manufactured by Mitsui Petrochemical Industries, Ltd.) and “Hostalen GUR” (manufactured by Hoechst).
Etc. are known.
【００１３】また、本発明では、上記ＵＨＭＷＰＥとと
もに、超高分子量ポリアミド、超高分子量ポリプロピレ
ン等を併用することもできる。Further, in the present invention, ultra high molecular weight polyamide, ultra high molecular weight polypropylene and the like can be used together with the above UHMWPE.
【００１４】本発明の簡易濾過フィルタは、上記ＵＨＭ
ＷＰＥを主体とするプラスチック材料を用い、例えばつ
ぎのようにして多孔質体１を作製し、さらにこれに凹状
部１ａを賦形して得られる。The simple filtration filter of the present invention is the above UHM.
It can be obtained by using a plastic material mainly composed of WPE, for example, to manufacture the porous body 1 as described below, and then forming the concave portion 1a therein.
【００１５】まず、多孔質体１の製法を説明する。上記
製法としては、例えば、本発明者らが先に発明した焼結
法（特公平５−６６８５５号公報）が好適である。すな
わち、この方法は上記プラスチック材料を、粉体として
調製し、この粉体を金型に充填した後、上記プラスチッ
ク材料の融点より低い温度で加熱する。そして、加圧す
ることにより予備成形物を得、この予備成形物を減圧雰
囲気中で、上記プラスチック材料の融点以上に加熱して
焼結させた後冷却する。このようにして得られたブロッ
ク状多孔質体を金型から脱型し、旋盤等を用いて所定厚
さに切削するという方法である。First, a method of manufacturing the porous body 1 will be described. As the above-mentioned manufacturing method, for example, the sintering method (Japanese Patent Publication No. 5-66855) previously invented by the present inventors is suitable. That is, in this method, the plastic material is prepared as a powder, the powder is filled in a mold, and then heated at a temperature lower than the melting point of the plastic material. Then, a preform is obtained by pressurizing, and the preform is heated in a reduced pressure atmosphere to a temperature equal to or higher than the melting point of the plastic material to sinter, and then cooled. In this method, the block-shaped porous body thus obtained is removed from the mold and cut to a predetermined thickness using a lathe or the like.
【００１６】上記方法で得られた多孔質体１は、粉体同
士を結着させて得られるため、簡易濾過フィルタとして
用いると、不織布の場合と異なり繊維の脱落等が起きな
いという利点を有する。また、バインダーを用いること
なく多孔質化しているため、濾液にバインダー成分等の
溶出がないという点においても好ましい。Since the porous body 1 obtained by the above method is obtained by binding powders to each other, when it is used as a simple filtration filter, it has an advantage that fibers do not drop out unlike the case of non-woven fabric. . Further, since it is made porous without using a binder, it is also preferable in that the binder component and the like are not eluted in the filtrate.
【００１７】なお、上記多孔質体１の厚みは、その賦形
前の厚みが２００〜３０００μｍとなるよう設定するこ
とが好ましい。より好ましくは５００〜２０００μｍで
ある。すなわち、厚みが２００μｍ未満では賦形後充分
な強度を得ることが難しく、厚みが３０００μｍを超え
ると多孔質体の剛性が強くなり過ぎ、賦形を行うことが
容易でないからである。The thickness of the porous body 1 is preferably set so that the thickness before shaping is 200 to 3000 μm. More preferably, it is 500 to 2000 μm. That is, if the thickness is less than 200 μm, it is difficult to obtain sufficient strength after shaping, and if the thickness exceeds 3000 μm, the rigidity of the porous body becomes too strong and shaping is not easy.
【００１８】つぎに、上記多孔質体１に凹状部１ａを賦
形する方法を説明する。上記賦形方法としては、例えば
図２に示すように、予め加熱しておいた多孔質体１を、
凸状金型３と凹状金型４との間に挟み、その状態で保持
して凹状部１ａを賦形し、脱型する方法があげられる。
このようにして、目的とする簡易濾過フィルタが得られ
る。なお、図２において、５は固定リングである。Next, a method of forming the concave portion 1a on the porous body 1 will be described. As the above-mentioned shaping method, for example, as shown in FIG.
There is a method in which it is sandwiched between the convex mold 3 and the concave mold 4 and held in that state to form the concave portion 1a and then the mold is removed.
In this way, the desired simple filtration filter is obtained. In addition, in FIG. 2, 5 is a fixed ring.
【００１９】そして、上記製法において、多孔質体の加
熱処理を行う際の加熱温度は、１００〜４００℃である
ことが好ましい。より好ましくは、１３０〜２５０℃で
ある。すなわち、上記範囲より低い温度では、加熱が不
充分で賦形後多孔質体が縮むため寸法安定性が乏しくな
るおそれがあり、逆に上記範囲よりも高い温度では、短
時間の加熱によって孔が塞がるおそれがあり、また多孔
質体の強度が低下し賦形時に破れるおそれがある。In the above manufacturing method, it is preferable that the heating temperature for the heat treatment of the porous body is 100 to 400 ° C. More preferably, it is 130 to 250 ° C. That is, at a temperature lower than the above range, heating may be insufficient and the porous body may shrink after shaping, resulting in poor dimensional stability. Conversely, at a temperature higher than the above range, pores may be formed by heating for a short time. There is a risk that it will be clogged, and the strength of the porous body will decrease, and it may break during shaping.
【００２０】また、上記製法において、加熱処理を行な
う時間は、３秒〜３０分であることが好ましい。より好
ましくは、５秒〜１０分である。すなわち、上記範囲よ
り短い時間では、賦形加工を行うのに充分な熱を加える
ことができないおそれがあり、上記範囲より長い時間で
は、熱分解による多孔質体の劣化を引き起こすおそれが
あり、また生産効率を低下させるおそれがあるからであ
る。In the above manufacturing method, the heat treatment time is preferably 3 seconds to 30 minutes. More preferably, it is 5 seconds to 10 minutes. That is, in a time period shorter than the above range, it may not be possible to apply sufficient heat to perform shaping processing, and in a time period longer than the above range, deterioration of the porous body due to thermal decomposition may occur, and This is because the production efficiency may be reduced.
【００２１】このようにして得られる簡易濾過フィルタ
は、充分な剛性および均一な透過性を有しており、しか
も容易かつ確実に得ることができる。The simple filtration filter thus obtained has sufficient rigidity and uniform permeability, and can be easily and reliably obtained.
【００２２】なお、図１に示す簡易濾過フィルタは、凹
状部１ａの周囲につば部２が形成されている。したがっ
て、濾液の受け容器に上記つば部２を係合させることに
より、フィルタ全体を安定的に支受することができ、実
用面に優れている。ただし、本発明の簡易濾過フィルタ
において、つば部２は必ずしも形成されている必要はな
く、例えば、濾液の受け容器側等に本発明の簡易濾過フ
ィルタを支える適宜のフィルタ支持部があればよい。The simple filtration filter shown in FIG. 1 has a collar portion 2 formed around the concave portion 1a. Therefore, by engaging the collar portion 2 with the filtrate receiving container, the entire filter can be stably supported, which is excellent in practical use. However, in the simple filtration filter of the present invention, the collar portion 2 does not necessarily have to be formed, and for example, a proper filter support portion for supporting the simple filtration filter of the present invention may be provided on the filtrate container side or the like.
【００２３】また、本発明の簡易濾過フィルタにおい
て、上記形状に賦形した後、電子線またはγ線を５〜３
００ｋＧｙ照射して架橋を行うことが好ましい。より好
ましくは、照射線量を１０〜２００ｋＧｙの範囲に設定
することが好ましい。すなわち、照射線量が５ｋＧｙ未
満であると架橋が不充分で剛性および耐熱性の向上を図
る点で効果が少なく、３００ｋＧｙを超えると分子量の
低下が進み、強度がかえって低下してしまったり、また
は多孔質体が着色してしてしまうおそれがあるからであ
る。Further, in the simple filtration filter of the present invention, after shaping into the above-mentioned shape, 5 to 3 electron beams or γ rays are applied.
Crosslinking is preferably performed by irradiation with 00 kGy. More preferably, the irradiation dose is set within the range of 10 to 200 kGy. That is, if the irradiation dose is less than 5 kGy, the crosslinking is insufficient and the effect is small in terms of improving rigidity and heat resistance, and if it exceeds 300 kGy, the molecular weight is reduced and the strength is rather lowered, or the porosity is decreased. This is because the substance may be colored.
【００２４】なお、架橋のための電子線またはγ線の照
射は、凹状部１ａの賦形前に行っても賦形後に行っても
差し支えはない。The electron beam or γ-ray for crosslinking may be irradiated before or after shaping the concave portion 1a.
【００２５】また、上記簡易濾過フィルタにおいて、多
孔質体１の平均孔径は、濾過対象液体に応じて適宜に設
定されるが、通常、１〜１００μｍであることが好まし
い。より好ましくは、５〜５０μｍである。すなわち、
平均孔径が１μｍ未満であると、濾液が流れにくくなる
おそれがあり、１００μｍを超えると、粒子の保留性が
悪くなるおそれがあるからである。In the simple filtration filter described above, the average pore diameter of the porous body 1 is appropriately set according to the liquid to be filtered, but it is usually preferably 1 to 100 μm. More preferably, it is 5 to 50 μm. That is,
This is because if the average pore diameter is less than 1 μm, the filtrate may be difficult to flow, and if it exceeds 100 μm, the retention of particles may be deteriorated.
【００２６】つぎに、実施例について比較例と併せて説
明する。Next, examples will be described together with comparative examples.
【００２７】[0027]
【実施例１】分子量５００万、融点１３５℃のＵＨＭＷ
ＰＥ粉体を金型に充填し、１３０℃で加熱後、加圧し気
孔率２５％の予備成形物を得、この予備成形物を１６０
℃に加熱し焼結させた後冷却し、円柱状の多孔質体を得
た。つづいて、得られた多孔質体を旋盤により切削し
て、厚み８００μｍの多孔質体を得た。そして、得られ
た多孔質体を熱風炉中１８０℃で５分間加熱したあと、
凸状金型と、その形状と一致した凹状金型を用い、金型
内に上記多孔質体を１分間保持することにより、図１に
示す形状に賦形した簡易濾過フィルタを得た。ただし、
凹状部の内径Ｌ1＝１００ｍｍ、つば部２を含む凹状の
外径Ｌ2 ＝１４０ｍｍ、凹状部１ａの深さＤ＝５０ｍｍ
である。Example 1 UHMW having a molecular weight of 5,000,000 and a melting point of 135 ° C.
The mold was filled with PE powder, heated at 130 ° C., and pressed to obtain a preform having a porosity of 25%.
After heating to ℃ and sintering, it was cooled to obtain a columnar porous body. Subsequently, the obtained porous body was cut by a lathe to obtain a porous body having a thickness of 800 μm. Then, after heating the obtained porous body in a hot air oven at 180 ° C. for 5 minutes,
By using a convex mold and a concave mold having the same shape as the mold, the porous body was held in the mold for 1 minute to obtain a simple filtration filter shaped into the shape shown in FIG. However,
Inner diameter L 1 of recessed portion = 100 mm, outer diameter L 2 of recessed portion including flange portion 2 = 140 mm, depth D of recessed portion 1 a D = 50 mm
It is.
【００２８】[0028]
【実施例２】上記実施例１で得られた賦形品に５０ｋＧ
ｙのγ線を照射して架橋し、目的とする簡易濾過フィル
タを得た。Example 2 50 kG was added to the shaped article obtained in Example 1 above.
Cross-linking was performed by irradiating y rays of y to obtain a desired simple filtration filter.
【００２９】[0029]
【実施例３】上記実施例１で得られた賦形品に５０ｋＧ
ｙの電子線を照射して架橋し、目的とする簡易濾過フィ
ルタを得た。Example 3 50 kG was added to the shaped article obtained in Example 1 above.
The electron beam of y was irradiated to perform cross-linking to obtain a desired simple filtration filter.
【００３０】[0030]
【実施例４】上記実施例１で得られた賦形品に３００ｋ
Ｇｙの電子線を照射して架橋し、目的とする簡易濾過フ
ィルタを得た。[Embodiment 4] The shape-imparted product obtained in the above-mentioned Embodiment 1 is 300 k
It was irradiated with an electron beam of Gy and crosslinked to obtain a desired simple filtration filter.
【００３１】[0031]
【実施例５】上記実施例１で得られた賦形品に５ｋＧｙ
の電子線を照射して架橋し、目的とする簡易濾過フィル
タを得た。Example 5 5 kGy was added to the shaped article obtained in Example 1 above.
Was irradiated with the electron beam and cross-linked to obtain a desired simple filtration filter.
【００３２】[0032]
【実施例６】上記実施例１において、多孔質体を得た
後、５０ｋＧｙの電子線を照射して架橋し、それ以外は
実施例１と同様にして、簡易濾過フィルタを得た。Example 6 A simple filtration filter was obtained in the same manner as in Example 1 except that the porous body was obtained in Example 1 above and then irradiated with an electron beam of 50 kGy for crosslinking.
【００３３】[0033]
【比較例１】多孔質シートとして、繊維の芯部分がポリ
プロピレン（ＰＰ）、芯部分を被覆する鞘部分にポリエ
チレン（ＰＥ）を用い、上記ＰＥを溶解することにより
繊維同士を結着させた不織布（目付量：２００ｇ／
ｍ2 、厚み：８００μｍ）を得た。この不織布を、実施
例１と同様にして金型により賦形し、目的とする簡易濾
過フィルタを得た。[Comparative Example 1] A non-woven fabric in which polypropylene (PP) is used as the core of the fiber and polyethylene (PE) is used as the sheath covering the core as the porous sheet, and the fibers are bound by melting the PE. (Basis weight: 200 g /
m 2 , thickness: 800 μm) was obtained. This non-woven fabric was shaped by a mold in the same manner as in Example 1 to obtain the intended simple filtration filter.
【００３４】上記実施例１〜６、比較例１で得た簡易濾
過フィルタについて、硬さ、通過水流量、平均孔径、保
留粒子径をそれぞれ測定し、その結果を後記の表１、表
２に示した。With respect to the simple filtration filters obtained in Examples 1 to 6 and Comparative Example 1, the hardness, the flow rate of passing water, the average pore size and the retained particle size were measured, and the results are shown in Tables 1 and 2 below. Indicated.
【００３５】なお、上記の諸特性は、以下の方法に従っ
て測定した。The above characteristics were measured according to the following methods.
【００３６】〔硬さ〕実施例１〜６および比較例１によ
り得られた簡易濾過フィルタの凹状部１ａを上にして、
この凹状部１ａを平板で圧縮し、凹状部１ａの深さＤを
１０％減少させる（例えば、Ｄ＝５０ｍｍから４５ｍ
ｍ）ために要する応力を各々５点測定し、その平均値を
求めた。[Hardness] With the concave portions 1a of the simple filtration filters obtained in Examples 1 to 6 and Comparative Example 1 facing upward,
The concave portion 1a is compressed with a flat plate to reduce the depth D of the concave portion 1a by 10% (for example, D = 50 mm to 45 m).
The stress required for m) was measured at each of 5 points, and the average value was calculated.
【００３７】〔通過水流量〕予めメタノールで濡らして
おいた簡易濾過フィルタの凹状部１ａに水を注ぎ込み、
１リットル通過する時間を測定した。ただし、測定中は
随時水を注ぎ足し、簡易濾過フィルタの凹状部１ａ内に
は常に水が満たされている状態とした。[Flow Rate of Passing Water] Pour water into the concave portion 1a of the simple filtration filter that has been wet with methanol in advance,
The time to pass 1 liter was measured. However, water was added as needed during the measurement so that the concave portion 1a of the simple filtration filter was always filled with water.
【００３８】〔平均孔径〕ＡＳＴＭ Ｅ １２９４に基
づく自動孔径分布測定機を用いて測定した。[Average Pore Size] The average pore size was measured using an automatic pore size distribution measuring instrument based on ASTM E 1294.
【００３９】〔保留粒子径〕ＪＩＳ Ｐ ３８０１の
「沈澱保持性」の方法に基づいて測定した。すなわち、
硫酸バリウムの懸濁液を濾過し、濾液中に含まれる沈澱
物の最大粒子径を測定した。[Reserved Particle Diameter] It was measured according to the method of “precipitation retention” of JIS P 3801. That is,
The suspension of barium sulfate was filtered, and the maximum particle size of the precipitate contained in the filtrate was measured.
【００４０】[0040]
【表１】 [Table 1]
【００４１】[0041]
【表２】 [Table 2]
【００４２】上記表１、表２の結果から、実施例１品〜
６品、比較例１品のいずれも通過水流量および平均孔径
については、大きな差が見られなかった。しかし、実施
例１品〜６品は、いずれも硬さおよび保留粒子径につい
て、比較例１品に比べて優れていることがわかる。From the results of Tables 1 and 2 above, the products of Example 1 to
No significant difference was seen in the flow rate of the passing water and the average pore diameter of the 6 products and the product of Comparative Example 1. However, it can be seen that the products of Examples 1 to 6 are superior to the product of Comparative Example 1 in hardness and retained particle size.
【００４３】また、実施例１品〜６品は、濾液の受け容
器上に簡易濾過フィルタを載せた状態で問題なく測定で
きたが、比較例１品の簡易濾過フィルタは、その硬さが
足りないため簡易濾過フィルタ自体で濾過対象液体を支
持できず、簡易濾過フィルタのつば部を全面固定しなけ
れば測定できなかった。The products of Examples 1 to 6 could be measured without problems with the simple filtration filter placed on the filtrate receiving container, but the simple filter of Comparative Example 1 had insufficient hardness. Since the simple filtration filter itself cannot support the liquid to be filtered, it cannot be measured unless the brim portion of the simple filtration filter is fixed.
【００４４】[0044]
【発明の効果】以上のように、本発明の簡易濾過フィル
タは、超高分子量ポリエチレンを主体とする多孔質体か
らなり、少なくとも一部が濾過対象液体を注入するため
の保形性ある凹状部となるよう賦形されていることによ
り、容器形状を保持するのに充分な剛性および均一な透
過性を有する。そして、この簡易濾過フィルタは容易か
つ確実に得ることができる。このため、従来のフィルタ
材取付タイプの簡易濾過フィルタが、濾過対象液体の漏
れに注意しなければならなかったのに対し、本発明の簡
易濾過フィルタはこのような漏れを生じない。また、従
来の不織布を賦形した簡易濾過フィルタにおいて、問題
となっていたフィルタ形状の変形や透過性の不均一さ
も、本発明の簡易濾過フィルタは問題とならない。As described above, the simple filtration filter of the present invention is composed of a porous body mainly composed of ultra-high molecular weight polyethylene, and at least a part thereof has a shape-retaining concave portion for injecting a liquid to be filtered. By being shaped so that it has sufficient rigidity and uniform permeability to hold the shape of the container. And this simple filtration filter can be obtained easily and surely. For this reason, while the conventional simple filtration filter of the filter material mounting type must pay attention to the leakage of the liquid to be filtered, the simple filtration filter of the present invention does not cause such leakage. In addition, the conventional simple filtration filter formed by forming a non-woven fabric does not pose a problem with the simple filtration filter of the present invention, which is a problem with the deformation of the filter shape and the non-uniformity of the permeability.
【００４５】なお、本発明の簡易濾過フィルタにおい
て、上記多孔質体として超高分子量ポリエチレンを主体
をする粉体を焼結して得たものを用いると、充分な剛性
および均一な透過性を備えたものを、容易かつ確実に得
ることができる。In the simple filtration filter of the present invention, when the porous body obtained by sintering powder having ultra-high molecular weight polyethylene as a main component is used, sufficient rigidity and uniform permeability are obtained. You can easily and surely obtain what you want.
【００４６】また、本発明の簡易濾過フィルタにおい
て、電子線またはγ線照射により架橋したものは、より
高い剛性を備えており、しかも、耐熱性にも優れている
という利点も有する。In addition, the simple filtration filter of the present invention, which is crosslinked by irradiation with electron beams or γ rays, has the advantages of higher rigidity and excellent heat resistance.
【図１】本発明の簡易濾過フィルタの一例を示す断面図
である。FIG. 1 is a cross-sectional view showing an example of a simple filtration filter of the present invention.
【図２】本発明の簡易濾過フィルタの製法の一例を示す
説明図である。FIG. 2 is an explanatory view showing an example of a method for producing the simple filtration filter of the present invention.
１ 多孔質体 １ａ 凹状部 1 porous body 1a concave portion
Claims (3)
孔質体からなり、上記多孔質体の少なくとも一部が、濾
過対象液体を注入するための保形性ある凹状部となるよ
う賦形されていることを特徴とする簡易濾過フィルタ。1. A porous body mainly composed of ultra-high molecular weight polyethylene, wherein at least a part of the porous body is shaped to have a shape-retaining concave portion for injecting a liquid to be filtered. A simple filtration filter that is characterized by
ンを主体とする粉体を焼結してなる請求項１記載の簡易
濾過フィルタ。2. The simple filtration filter according to claim 1, wherein the porous body is formed by sintering a powder containing ultra-high molecular weight polyethylene as a main component.
０ｋＧｙの照射線量で架橋されている請求項１または２
記載の簡易濾過フィルタ。3. 5 to 30 by irradiation with electron beams or γ rays
Cross-linking with an irradiation dose of 0 kGy.
The simple filtration filter described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08025696A JP3640729B2 (en) | 1996-04-02 | 1996-04-02 | Simple filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08025696A JP3640729B2 (en) | 1996-04-02 | 1996-04-02 | Simple filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09271618A true JPH09271618A (en) | 1997-10-21 |
| JP3640729B2 JP3640729B2 (en) | 2005-04-20 |
Family
ID=13713242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08025696A Expired - Fee Related JP3640729B2 (en) | 1996-04-02 | 1996-04-02 | Simple filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3640729B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015035406A (en) * | 2013-08-09 | 2015-02-19 | 日東電工株式会社 | Ventilation member |
| US20180093392A1 (en) * | 2014-09-03 | 2018-04-05 | Groupe Ppd Inc. | Chute for cement truck and method of fabricating a chute for a cement truck |
| KR20190027637A (en) * | 2017-09-07 | 2019-03-15 | 해동에이앤씨 유한회사 | Water treatment filter using UHMW PE material applied to AOS separator |
-
1996
- 1996-04-02 JP JP08025696A patent/JP3640729B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015035406A (en) * | 2013-08-09 | 2015-02-19 | 日東電工株式会社 | Ventilation member |
| US20180093392A1 (en) * | 2014-09-03 | 2018-04-05 | Groupe Ppd Inc. | Chute for cement truck and method of fabricating a chute for a cement truck |
| US10625440B2 (en) * | 2014-09-03 | 2020-04-21 | Groupe Ppd Inc. | Chute for cement truck and method of fabricating a chute for a cement truck |
| KR20190027637A (en) * | 2017-09-07 | 2019-03-15 | 해동에이앤씨 유한회사 | Water treatment filter using UHMW PE material applied to AOS separator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3640729B2 (en) | 2005-04-20 |
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