JPH07102292B2 - Cartridge filter - Google Patents
Cartridge filterInfo
- Publication number
- JPH07102292B2 JPH07102292B2 JP2226213A JP22621390A JPH07102292B2 JP H07102292 B2 JPH07102292 B2 JP H07102292B2 JP 2226213 A JP2226213 A JP 2226213A JP 22621390 A JP22621390 A JP 22621390A JP H07102292 B2 JPH07102292 B2 JP H07102292B2
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- weight
- layer
- winding
- cartridge filter
- 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
Links
- 239000000835 fiber Substances 0.000 claims description 77
- 238000001914 filtration Methods 0.000 claims description 38
- 239000004745 nonwoven fabric Substances 0.000 claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- 238000004804 winding Methods 0.000 claims description 17
- 239000000853 adhesive Substances 0.000 claims description 10
- 229920002994 synthetic fiber Polymers 0.000 claims description 8
- 239000012209 synthetic fiber Substances 0.000 claims description 8
- 229920001410 Microfiber Polymers 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 23
- 239000007788 liquid Substances 0.000 description 19
- -1 polypropylene Polymers 0.000 description 14
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- 238000000034 method Methods 0.000 description 7
- 239000011162 core material Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000032798 delamination Effects 0.000 description 2
- GWTCIAGIKURVBJ-UHFFFAOYSA-L dipotassium;dodecyl phosphate Chemical compound [K+].[K+].CCCCCCCCCCCCOP([O-])([O-])=O GWTCIAGIKURVBJ-UHFFFAOYSA-L 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 235000013334 alcoholic beverage Nutrition 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003658 microfiber Substances 0.000 description 1
- 210000003666 myelinated nerve fiber Anatomy 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Filtering Materials (AREA)
- Filtration Of Liquid (AREA)
- Nonwoven Fabrics (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は筒状のカートリッジフィルター、特に製薬工業
や食品工業等のように濾過液に油分（油剤）の混入の回
避が要求される精製液の濾過器用に好適なカートリッジ
フィルターに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a cylindrical cartridge filter, particularly a purified liquid which is required to avoid mixing of an oil component (oil agent) with a filtered liquid such as pharmaceutical industry and food industry. The present invention relates to a cartridge filter suitable for use in a filter.
（従来の技術） 筒状のカートリッジフィルターは例えば製薬工業、電子
工業等での精製水の濾過、あるいは食品工業におけるア
ルコール飲料の製造工程における液体の濾過、さらに自
動車工業における塗装剤の濾過等各種の業界において広
く利用されている。(Prior Art) Cylindrical cartridge filters are used for various purposes such as filtration of purified water in the pharmaceutical industry, electronic industry, etc., filtration of liquids in the manufacturing process of alcoholic beverages in the food industry, and filtration of coating agents in the automobile industry. Widely used in the industry.
通常筒状カートリッジフィルターの濾過層は繊維不織布
シートや繊維意図を多孔性芯筒に捲回して形成されてい
る。そして濾過層を構成する繊維には綿繊維、合成繊維
等種々なものが用いられているが、耐蝕性の面から合成
繊維が汎用され、また均質な濾過層は不織布シートの捲
回によって容易に得られることから、近年においては不
織布シートを捲回して筒状となしたカートリッジフィル
ターが好んで使用されるに至っている。Usually, the filtration layer of a tubular cartridge filter is formed by winding a fibrous non-woven fabric sheet or a fibrous intention on a porous core cylinder. Various fibers such as cotton fibers and synthetic fibers are used as the fibers constituting the filtration layer, but synthetic fibers are generally used from the viewpoint of corrosion resistance, and a homogeneous filtration layer can be easily formed by winding a nonwoven sheet. From the fact that it can be obtained, in recent years, a cartridge filter in which a nonwoven fabric sheet is wound into a tubular shape has been favorably used.
上記カートリッジフィルターの筒状濾過層を形成する不
織布シートとしては、熱接着繊維を含有するカードウェ
ブを加熱し繊維間を熱接着した不織布、スパンボンド不
織布、湿式不織布等が挙げられるが、熱接着繊維を含有
するカードウェブを加熱しながら捲回されて形成された
濾過層は、接着剤が不要であって層間剥離が起こりにく
いという利点があり、このことから熱接着性繊維を使用
したカートリッジフィルターの需要が増加しているのが
実情である。Examples of the non-woven fabric sheet forming the tubular filtration layer of the cartridge filter include a non-woven fabric obtained by heating a card web containing heat-bonding fibers to thermally bond the fibers, a spunbonded non-woven fabric, a wet non-woven fabric, etc. The filtration layer formed by winding the card web containing the resin while heating has an advantage that an adhesive agent is unnecessary and delamination is unlikely to occur, and from this fact, a cartridge filter using a heat-adhesive fiber can be used. The reality is that demand is increasing.
（発明が解決しようとする課題） ところが合成繊維をカードに通しウェブとして紡出する
ためには合成繊維に油剤の付与が必要となり、したがっ
てこのカードウェブから形成された不織布シートを捲回
したカートリッジフィルターの濾過層には上記繊維油剤
が残留しており、これを液体の濾過に供したときには濾
過した清浄液中に油剤が溶け入り、濁りや泡立ちが生じ
るという不都合が起きる。このため使用分野に適合した
油剤を選定するなどの工夫がなされているが、食品工業
や薬品工業用としては不向きとされ、これらの業界にお
いては油剤溶出のないカートリッジフィルターが強く要
望されている。(Problems to be Solved by the Invention) However, in order to pass a synthetic fiber through a card and spun it as a web, it is necessary to apply an oil agent to the synthetic fiber. Therefore, a cartridge filter formed by winding a non-woven sheet formed from this card web. The fiber oil agent remains in the filter layer, and when the fiber oil agent is applied to the liquid filtration, the oil agent dissolves in the filtered cleaning liquid, resulting in inconveniences such as turbidity and foaming. For this reason, measures such as selection of an oil agent suitable for the field of use have been made, but it is unsuitable for the food industry and the pharmaceutical industry, and there is a strong demand in these industries for a cartridge filter that does not elute an oil agent.
濾過作用時に油剤溶出のない、または殆どない濾過層を
有するカートリッジフィルターは例えば特開平２−2191
8号公報に記載されているように、不織布シートを湿式
抄紙法またはエアレイ法に作られたウェブあるいはスパ
ンボンド法によって形成された不織布シートを用いるこ
とによって得ることができる。しかしながら前者の方法
ではカードウェブから形成した不織布シートと同程度の
均整な濾過層を得ることが困難であり、また後者の方法
では濾過層の層間剥離が生じやすいという難点がある。A cartridge filter having a filter layer which does not elute or hardly elutes an oil agent during filtration is disclosed in, for example, JP-A-2-2191
As described in JP-A-8, a nonwoven fabric sheet can be obtained by using a web made by a wet papermaking method or an air laid method or a nonwoven fabric sheet formed by a spunbond method. However, the former method has a problem in that it is difficult to obtain a filter layer as uniform as a non-woven fabric sheet formed from a card web, and the latter method has a drawback that delamination of the filter layer easily occurs.
（課題を解決するための手段） 本発明のカートリッジフィルターは、熱接着性繊維を少
なくとも50重量％含む合成繊維のカードウェブから形成
された不織布シートが捲回された筒状濾過層がそれぞれ
濾過精度の異なる内層と外層とにより形成されてなるカ
ートリッジフィルターにおいて、該内層は繊維断面が円
形で２つの成分が各々４つ以上くさび形に交互に配置さ
れた熱接着性分割型複合繊維が分割された太さ0.5デニ
ール以下のくさび形極細繊維を50重量％以上含む不織布
シートの捲回によって形成され、該外層は太さ0.5デニ
ール以上の繊維断面が円形の熱接着性繊維を50重量％以
上含む不織布シートの捲回によって形成され、上記内外
層共目付は20〜150g/m2かつ油剤付着率が0.02％以下で
あることを特徴とするものである。(Means for Solving the Problems) In the cartridge filter of the present invention, a tubular filtration layer formed by winding a nonwoven fabric sheet formed from a card web of synthetic fibers containing at least 50% by weight of heat-bondable fibers has a filtering accuracy of In the cartridge filter formed by different inner layers and outer layers, the inner layer is formed by dividing the thermoadhesive splittable conjugate fiber in which the fiber cross section is circular and two or more two components are alternately arranged in a wedge shape. A non-woven fabric formed by winding a non-woven sheet containing 50% by weight or more of wedge-shaped ultrafine fibers having a thickness of 0.5 denier or less, and the outer layer containing 50% by weight or more of a thermobondable fiber having a circular fiber cross section with a thickness of 0.5 denier or more. The sheet is formed by winding a sheet, and the above-mentioned inner and outer layer joint weight is 20 to 150 g / m 2 and the oil agent adhesion rate is 0.02% or less.
本発明に適用される熱接着性繊維は２種類の熱接着性繊
維である。まず内層に使用する繊維は繊維断面が円形で
２つの成分が各々４つ以上くさび形に交互に配置された
熱接着性分割型複合繊維である。内層はこの複合繊維が
分割された太さ0.5デニール以下のくさび形極細繊維を5
0重量％以上含む不織布シートの捲回によって形成す
る。次に外層は太さ0.5デニール以上の繊維断面が円形
の熱接着性繊維を使用する。外層はこの複合繊維を50量
％以上含む不織布シートの捲回によって形成する。かく
して上記内外層共油剤付着率が0.02％以下である深層濾
過機能を有するカートリッジフィルターとなすことがで
きる。The thermoadhesive fibers applied to the present invention are two types of thermoadhesive fibers. First, the fiber used for the inner layer is a heat-adhesive splittable conjugate fiber in which the fiber cross section is circular and two or more two components are alternately arranged in a wedge shape. The inner layer is made up of wedge-shaped microfibers with a thickness of 0.5 denier or less, which are obtained by dividing this composite fiber.
It is formed by winding a nonwoven sheet containing 0% by weight or more. Next, for the outer layer, a heat-bondable fiber having a circular fiber cross section with a thickness of 0.5 denier or more is used. The outer layer is formed by winding a nonwoven sheet containing 50% by weight or more of this composite fiber. Thus, a cartridge filter having a deep-layer filtration function, in which the oil adhering rate of the inner and outer layers is 0.02% or less, can be obtained.
カード機を円滑に通過させるために上記した繊維素材に
は通常0.2％前後の油剤が付与されている。このような
カードウェブを用いて油剤付着率が0.02％以下の不織布
シートとなすには、カードウェブに高圧液体流処理を施
すとよい。そしてカードウェブを適正な条件のもとに高
圧液体流処理することにより確実に油付着率を0.02％以
下にすることができるとともに、ウェブ繊維の交絡度合
を向上させることができ、さらに分割型複合繊維を分割
して極細化することもできる。高圧液体流処理の条件と
しては、圧力が10〜200kg/cm2、処理シートを移送する
コンベア速度が５〜20m/min程度が好ましい。圧力が10k
g/cm2未満であると油剤付着量が0.02％以下になりにく
く、圧力が200kg/cm2より高くなると不織布シートの繊
維分布が乱れたり不織布シートが切断される恐れが生じ
る。またコンベア速度が5m/min未満では生産効率が悪く
なったり速度が20m/minより速くなると油剤を除去率が
低下する。In order to allow the card to pass smoothly, the above-mentioned fiber material is usually provided with an oil agent of about 0.2%. In order to use such a card web to form a non-woven fabric sheet having an oil adhesion rate of 0.02% or less, the card web may be subjected to a high-pressure liquid flow treatment. And by treating the card web under high pressure liquid flow under appropriate conditions, the oil adhesion rate can be reliably reduced to 0.02% or less, and the degree of entanglement of web fibers can be improved. It is also possible to divide the fiber into ultrafine fibers. As conditions for the high-pressure liquid flow treatment, it is preferable that the pressure is 10 to 200 kg / cm 2 and the conveyor speed for transferring the treatment sheet is about 5 to 20 m / min. Pressure is 10k
If it is less than g / cm 2 , the amount of oil adhered is less than 0.02%, and if the pressure is higher than 200 kg / cm 2 , the fiber distribution of the nonwoven sheet may be disturbed or the nonwoven sheet may be cut. If the conveyor speed is less than 5 m / min, the production efficiency will be poor, and if the speed is higher than 20 m / min, the oil agent removal rate will be reduced.
油剤は完全に除去することがより望ましいが少なくとも
0.02％以下となすことが肝要である。油剤付着率が0.02
％以上となると油剤が濾過後の清浄水へ溶け出して濁り
や泡立ちが目立ちはじめ前記した業界の用途には不向き
となる。It is more desirable to completely remove the oil, but at least
It is important to keep it below 0.02%. Oil adhesion rate is 0.02
When it is more than 0.1%, the oil agent dissolves in clean water after filtration, and turbidity or foaming becomes conspicuous, which is not suitable for the use in the above-mentioned industry.
不織布シートの目付は20〜150g/m2の範囲である。目付
が20g/m2未満であると上記高圧流体処理時に不織布シー
トが一部において切断される場合があり、目付が150g/m
2より大きくなると油剤の除去がしにくくなる。The basis weight of the nonwoven sheet is in the range of 20 to 150 g / m 2 . If the basis weight is less than 20 g / m 2 , the nonwoven sheet may be partially cut during the above high-pressure fluid treatment, and the basis weight is 150 g / m 2.
If it is larger than 2 , it becomes difficult to remove the oil agent.
上記高圧流体処理後の不織布シートを用いてカートリッ
ジフィルターの濾過層を作るには、該不織布シートを乾
燥させ、熱接着性繊維の融着温度に加熱しながら多孔性
芯筒あるいは鉄芯に捲回するとよい。In order to form a filtration layer of a cartridge filter using the non-woven sheet after the high-pressure fluid treatment, the non-woven sheet is dried and wound around a porous core tube or an iron core while being heated to the fusion temperature of the heat-adhesive fiber. Good to do.
（実施例１） 以下図面を参照しながら本発明の実施例について説明す
ると、第２図に示したような繊維断面を有し、成分（1
1）がポリプロピレン、成分（12）がポリ４−メチルペ
ンテン−１である16分割型の複合繊維（10）を溶融紡糸
し熱水浴中で延伸して３デニールの太さとなし、次いで
この繊維を多価アルコール脂肪酸エステルとアルキルホ
スフェートカリウム塩を7:3の割合で混合したところの
油剤浴（油剤濃度2.5％）に浸漬し、しかるのちスタッ
ファボックスにより機械捲縮を施して乾燥し、45mmに切
断して不織布用の分割型複合繊維（以下Ａ繊維）という
を得た。他方、芯成分がポリプロピレン、鞘成分がポリ
エチレンの芯鞘型熱接着性繊維を溶融紡糸し、上記同様
に熱水浴中で延伸して２デニールの太さとなしたのち上
記の油剤浴に浸漬し、機械捲縮を施したのち乾燥し、51
mmに切断して熱接着性繊維（以下Ｂ繊維という）を得
た。このときのＡ繊維とＢ繊維の油剤付着率はそれぞれ
0.25％であった。Example 1 An example of the present invention will be described below with reference to the drawings. The fiber (1) has a fiber cross section as shown in FIG.
A 16-division composite fiber (10) in which 1) is polypropylene and component (12) is poly-4-methylpentene-1 is melt-spun and drawn in a hot water bath to obtain a thickness of 3 denier, and then this fiber Is mixed with polyhydric alcohol fatty acid ester and alkyl phosphate potassium salt in a ratio of 7: 3, immersed in an oil bath (oil concentration 2.5%), and then mechanically crimped with a staffer box and dried to 45 mm. It was cut into pieces to obtain a splittable conjugate fiber for nonwoven fabric (hereinafter referred to as A fiber). On the other hand, a core-sheath type heat-adhesive fiber having a core of polypropylene and a sheath of polyethylene is melt-spun, stretched in a hot water bath to have a thickness of 2 denier, and then immersed in the above oil bath. , Mechanically crimped and dried, 51
A thermoadhesive fiber (hereinafter referred to as B fiber) was obtained by cutting into mm. At this time, the oil agent adhesion rate of A fiber and B fiber is respectively
It was 0.25%.
得られた上記Ａ繊維80重量％とＢ繊維20重量％とを混綿
し、カード機に通して開繊して目付30g/m2のカードウェ
ッブとなした。このカードウェブを孔径0.13mmのノズル
が1mm間隔で550個併設されたノズル列を用い、水圧80kg
/cm2、コンベア速度1m/minの条件で表裏各４回の高圧液
体流処理を施してＡ繊維の大部分を分割し、断面がくさ
び形の極細繊維にするとともにウェブを不織布シートと
なした。この後、該不織布シートを90℃にて乾燥し、14
0℃の熱風にて加熱処理して上記Ｂ繊維のポリエチレン
成分を溶融しながら長さ35cm、重量1.5kg、直径30mmの
鉄芯に繊維密度が平均0.28g/cm3となるように加圧しな
がら巻き径が55mmに達するまで巻き取り、冷却して鉄芯
を抜き、筒状濾過層（２）の内層（2A）を形成した。次
いで該筒状濾過層（２）の外周に上記熱接着性のＢ繊維
100重量％をカード機に通して開繊し目付30g/m2とした
カードウェッブを上記同様の条件にて表裏各４回の高圧
液体流処理をし、不織布シートとなした。この後、該不
織布シートを90℃で乾燥し、150℃の熱風にて加熱処理
してポリエチレン成分の溶融により繊維間を融着させて
一旦冷却し、この不織布シートを上記内層（2A）の上に
巻き径65mmになるまで巻き付けて巻き終り端を熱接着し
て繊維密度が平均0.18g/cm3の外層（2B）を形成した。
続いて両端を切断仕上げして第１図に示したような長さ
25cmの２層構造の筒状カートリッジフィルター（１）と
なした。80% by weight of the A fiber thus obtained and 20% by weight of the B fiber were mixed and passed through a card machine to open the fiber into a card web having a basis weight of 30 g / m 2 . This card web uses a row of 550 nozzles with a hole diameter of 0.13 mm arranged at 1 mm intervals and a water pressure of 80 kg.
/ cm 2, divided into a majority of the A fibers subjected to high pressure liquid jet treatment on the front and back each 4 times with the conditions of conveyor speed 1 m / min, cross section is no web and nonwoven fabric sheet as well as the ultrafine fibers of the wedge . After that, the non-woven sheet is dried at 90 ° C.
While heat-treating with hot air at 0 ° C., while melting the polyethylene component of the B fiber, pressurizing the iron core having a length of 35 cm, a weight of 1.5 kg and a diameter of 30 mm so that the fiber density becomes 0.28 g / cm 3 on average. The inner core (2A) of the tubular filtration layer (2) was formed by winding up until the winding diameter reached 55 mm, cooling and removing the iron core. Then, on the outer circumference of the tubular filtration layer (2), the above-mentioned heat-adhesive B fiber
A 100% by weight of the card web was opened by passing through a card machine and a basis weight of 30 g / m 2 was applied to each of the front and back surfaces under high pressure liquid flow treatment 4 times under the same conditions as above to form a nonwoven sheet. Then, the non-woven sheet is dried at 90 ° C., heat-treated with hot air of 150 ° C. to melt the polyethylene component to fuse the fibers to each other, and then cool the non-woven sheet on the inner layer (2A). The outer layer (2B) having a fiber density of 0.18 g / cm 3 on average was formed by winding the fiber to a roll diameter of 65 mm and thermally bonding the end of the roll.
Then, cut both ends to finish the length as shown in Fig. 1.
A tubular cartridge filter (1) having a two-layer structure of 25 cm was prepared.
（実施例２） 実施例１において紡糸した３デニールの16分割型複合繊
維（10）と２デニールの熱接着性繊維を、ポリオキシエ
チレンステアリルエーテルとポリオキシエチレンラウリ
ルエーテルホスフェートカリウム塩およびラウリルホス
フェートカリウム塩を3.5:1.5:1の割合で混合したとこ
ろの油剤浴（油剤濃度を2.1％）に浸漬し、実施例１同
様に機械捲縮を施したのち切断してＡ繊維とＢ繊維とを
得た。このときのＡ繊維とＢ繊維の油剤付着率は0.28％
であつた。このＡ繊維とＢ繊維とをそれぞれ50重量％ず
つ混合してカードウェブとなしたのち、実施例１と同様
高圧液体流処理を施して乾燥し、Ａ繊維の大部分を分割
し、断面がくさび形の極細繊維にするとともにウェブを
不織布シートとなした。そしてこの不織布シートを実施
例１同様に加熱処理しながら筒状濾過層（２）の内層
（2A）を形成した。また筒状濾過層（２）の外層（2B）
には実施例１と同じＢ繊維の不織布シートを用いて実施
例１と同形のカートリッジフィルター（１）となし
た。。(Example 2) The 3 denier 16-splittable conjugate fiber (10) spun in Example 1 and a 2 denier heat-adhesive fiber were mixed with polyoxyethylene stearyl ether and polyoxyethylene lauryl ether phosphate potassium salt and lauryl phosphate potassium. The salt was mixed in a ratio of 3.5: 1.5: 1, immersed in an oil agent bath (oil agent concentration of 2.1%), mechanically crimped and cut to obtain A fiber and B fiber as in Example 1. It was At this time, the oil agent adhesion rate of A fiber and B fiber is 0.28%
It was. 50% by weight of each of the A fibers and the B fibers were mixed to form a card web, which was then subjected to high-pressure liquid flow treatment and dried in the same manner as in Example 1 to divide most of the A fibers into wedges. The web was made into a non-woven sheet as well as formed into ultrafine fibers. Then, the inner layer (2A) of the tubular filtration layer (2) was formed by heat-treating this nonwoven fabric sheet in the same manner as in Example 1. The outer layer (2B) of the tubular filtration layer (2)
The same B-fiber nonwoven fabric sheet as in Example 1 was used as the cartridge filter (1) having the same shape as in Example 1. .
（実施例３） 実施例１において紡糸した３デニールの16分割型複合繊
維（10）を、ポリオキシエチレンステアリルエーテルと
ポリオキシエチレンラウリルエーテルホスフェエートカ
リウム塩およびラウリルホスフェートカリウム塩を3.5:
1.5:1の割合で混合したところの油剤浴（油剤濃度を21
％）に浸漬し、実施例１同様に機械捲縮を施したのち切
断してＡ繊維となした。このＡ繊維の油剤付着率は0.23
％であつた。そしてこのＡ繊維100重量％をカード機に
通して開繊し、目付30g/m2のカードウェブとなしたのち
実施例１と同様高圧液体処理を施してＡ繊維の大部分を
分割し、断面がくさび形の極細繊維にするとともにウェ
ブを不織布シートとなしたのち、160℃にて熱処理を施
して成分（11）でもって熱接着し、この不織布シートで
もって筒状濾過層（２）の内層（2A）を形成した。外層
（2B）には実施例１と同じＢ繊維の不織布シートを用い
て実施例１と同形のカートリッジフィルター（１）とな
した。Example 3 The 3 denier 16-division composite fiber (10) spun in Example 1 was mixed with polyoxyethylene stearyl ether, polyoxyethylene lauryl ether phosphate potassium salt and lauryl phosphate potassium salt at 3.5:
Oil solution bath mixed at a ratio of 1.5: 1 (oil solution concentration of 21
%) And subjected to mechanical crimping in the same manner as in Example 1 and then cut into A fibers. Adhesion rate of this A fiber is 0.23
It was in%. Then, 100% by weight of this A fiber is passed through a card machine to open the fiber, and a card web having a basis weight of 30 g / m 2 is obtained. Then, the high pressure liquid treatment is carried out in the same manner as in Example 1 to divide most of the A fiber into a cross section. After forming the wedge-shaped ultrafine fibers and forming the web into a non-woven sheet, heat-treat at 160 ° C to heat-bond with the component (11), and with this non-woven sheet, the inner layer of the tubular filtration layer (2) (2A) was formed. The same B fiber nonwoven fabric sheet as in Example 1 was used for the outer layer (2B) to obtain a cartridge filter (1) having the same shape as in Example 1.
（比較例１） 実施例１のＡ繊維80重量％とＢ繊維20重量％を混合した
カードウェブを高圧液体流処理することなく熱風加工機
でもって熱風処理（140℃）してＢ繊維のポリエチレン
成分を溶融し、実施例１同様に鉄芯に巻き取って筒状濾
過層（２）の内層（2A）を形成し、上記Ｂ繊維100重量
％のカードウェブを高圧液体流処理することなく熱風加
工機でもって熱風処理（150℃）した不織布シートで外
層（2B）を形成し、実施例と同形のカートリッジフィル
ター（１）となした。(Comparative Example 1) The card web in which 80% by weight of A fiber and 20% by weight of B fiber of Example 1 were mixed was subjected to hot air treatment (140 ° C) with a hot air processor without high pressure liquid flow treatment to form polyethylene of B fiber. The components were melted and wound on an iron core in the same manner as in Example 1 to form the inner layer (2A) of the tubular filtration layer (2), and the card web containing 100% by weight of the B fiber was treated with hot air without high pressure liquid flow treatment. An outer layer (2B) was formed from a non-woven fabric sheet that had been subjected to hot air treatment (150 ° C.) with a processing machine to form a cartridge filter (1) having the same shape as that of the example.
（比較例２） スパンボンド方により得られたポリプロピレン繊維不織
布（太さ0.7デニール，目付30g/m2）を用い、繊維密度
が平均0.20g/mc3となるようにポリプロピレン製の多孔
性芯材上に捲回して巻径が65mmに達するまで巻き取り、
筒状濾過層（２）としたカートリッジフィルター（１）
となした。(Comparative Example 2) Using a polypropylene fiber non-woven fabric (thickness 0.7 denier, basis weight 30 g / m 2 ) obtained by the spunbond method, a polypropylene porous core material having a fiber density of 0.20 g / mc 3 on average Wind it up and wind it until the winding diameter reaches 65 mm,
Cartridge filter (1) with tubular filtration layer (2)
I said.
上記実施例１〜３および比較例１〜２のカートリッジフ
ィルター各５個の濾過性能、濾過水（清浄水）の油剤含
有率、泡立ち性の測定結果は次表の通りであった。The following table shows the measurement results of the filtration performance, the oil content of the filtered water (clean water), and the foamability of each of the five cartridge filters of Examples 1 to 3 and Comparative Examples 1 and 2.
なお上表各項目の測定値は下記の方法によって算出し
た。 The measured values of each item in the above table were calculated by the following methods.
油剤付着率（％）：水分既知の試料5gを正確に秤り、ソ
ックスレー抽出器に円筒濾紙を用いずに入れた後、付属
フラスコ100mlのメチルアルコールを入れ、水浴上にの
せて抽出液が弱く沸騰を保つ程度に３時間加熱したのち
試料部に溜った溶剤をフラスコにもどしフラスコ内容物
5ml以下に濃縮したのちあらかじめ105±２℃で恒量を求
めた秤瓶に移す。抽出フラスコはメチルアルコールで洗
浄し、洗液を秤瓶に合わせ溶剤を揮発させたのち105±
２℃の恒温乾燥器中に1.5時間放置し、デシケータ中で
冷却し質量を秤る。抽出分はメチルアルコール抽出量の
絶乾試料質量に対する百分率で表す。但しメチルアルコ
ールに含まれている残留物の分を補正する必要がある。Oil agent adhesion rate (%): Accurately weigh 5 g of a sample with known water content, put it in a Soxhlet extractor without using cylindrical filter paper, put 100 ml of methyl alcohol in the attached flask, and put it on a water bath to weaken the extract. After heating for 3 hours to maintain boiling, return the solvent accumulated in the sample part to the flask and
After concentrating to less than 5 ml, transfer to a weighing bottle whose constant weight was determined at 105 ± 2 ° C beforehand. The extraction flask is washed with methyl alcohol, the washing liquid is put in a balance bottle and the solvent is volatilized, then 105 ±
Leave in a constant temperature oven at 2 ° C for 1.5 hours, cool in a desiccator and weigh. The extracted amount is expressed as a percentage of the amount of methyl alcohol extracted with respect to the mass of the absolutely dry sample. However, it is necessary to correct the amount of residue contained in methyl alcohol.
濾過ライフ（）：濃度200ppmに調整された試験用ダス
ト（JIS8種、関東ローム、平均粒径８μｍ）の懸濁液を
均一に撹拌しながらカートリッジフィルターの外側から
中空部に向かって10/minの割合で強制通水を行い、通
水量10/minを維持するための通水圧力が2.0kg/cm2と
なったときの総通水量。Filtration life (): 10 / min from the outside of the cartridge filter to the hollow part while uniformly stirring a suspension of test dust (JIS type 8, Kanto loam, average particle size 8 μm) adjusted to a concentration of 200 ppm. The total water flow rate when forced water flow is carried out at a rate and the water flow pressure for maintaining a water flow rate of 10 / min is 2.0 kg / cm 2 .
濾過精度（μｍ）：上記のようにして通水して得られた
濾過水（通液開始１分後）を採取し、超遠心式自動粒度
分布測定装置（堀場製作所製）で通過粒子の径を測定し
たときの各試料の最大粒径を示す。Filtration accuracy (μm): Filtered water obtained by passing water as described above (1 minute after the start of liquid passing) is collected, and the diameter of the passing particles is measured by an ultracentrifugal automatic particle size distribution analyzer (manufactured by Horiba, Ltd.). The maximum particle size of each sample is shown.
初期濾過効率（％）：上記懸濁１の乾燥後のダスト重
量をＡ点とし、濾過開始第１分経過後の濾過水１の乾
燥後のダスト重量をＢとして、 ［（Ａ−Ｂ）÷Ａ］×100より算出した。Initial filtration efficiency (%): The weight of dust of the suspension 1 after drying is set as point A, and the weight of dust of the filtered water 1 after the lapse of the first minute after the start of filtration is set as B, [(A−B) ÷ A] × 100.
濾過水の油剤含有率（％）:105±２℃で恒量を求めたは
かり瓶に水道水40を循環濾過し、１分経過後の濾過水
を約１採取し、正確に秤り、水分を蒸発させたのち10
5±２℃の恒恩乾燥器中に1.5時間放置し、デシケータ中
で冷却し質量を秤り、濾過水約１質量に対する百分率
で表す。但し、水道水中に含まれている残留物の分を補
正する必要がある。Oil content of filtered water (%): 105 ± 2 ℃ The constant amount was determined, and tap water 40 was circulated and filtered into a measuring bottle. About 1 minute of filtered water after 1 minute was collected, accurately weighed, and the water content was measured. After evaporation 10
It is left for 1.5 hours in a constant temperature dryer at 5 ± 2 ° C, cooled in a desiccator, weighed, and expressed as a percentage relative to about 1 mass of filtered water. However, it is necessary to correct the amount of residue contained in tap water.
濾過水の泡立ち（cm）：目盛りのある蓋付き試験管に20
mlの濾過水を入れ、試験管を逆さにし、清浄水が移動し
終わった時にもとの状態にもどす作業を20回繰り返した
後、１分間放置し、泡の量を試験管の目盛りから読み取
った。Bubble of filtered water (cm): 20 in a test tube with a lid with a scale
Add 20 ml of filtered water, invert the test tube, and return it to the original state when the clean water has finished moving, repeat 20 times, then leave for 1 minute and read the amount of foam from the scale of the test tube. It was
（発明の効果） このように本発明によるカートリッジフィルターは、熱
接着製繊維を少なくとも50重量％含む合成繊維のカード
ウェブから形成された不織布シートが捲回されて筒状濾
過層が形成されてなるカートリッジフィルターにおい
て、該濾過層を形成している不織布シートがあらかじめ
高圧液体流処理されて該濾過層の油剤付着率が0.02％以
下となっているから、このカートリッジフィルターで濾
過した濾過水は濁ったり、泡立ったりしない透明度の高
いものを得ることができ、また１部に熱接着性繊維を含
む合成繊維のカードウェブから形成された不織布シート
が用いられているから離間剥離のない均整な濾過層
（４）が得られる。さらに前記濾過層の外層は、断面が
円形の太さ0.5デニール以上の繊維が０重量％以上を占
め、内層は断面がくさび形の太さ0.5デニール以下の繊
維が50重量％以上を占めるから外層部を微細濾過物が通
り抜けやすく、微細濾過物は内層部において捕捉される
ので濾過効率に優れている。したがって本発明のカート
リッジフィルターは特に製薬工業や食品工業等のように
濾過液に油分（油剤）の混入の回避が要求される精製液
の濾過器用に好適となる。(Effects of the Invention) As described above, the cartridge filter according to the present invention is formed by winding the non-woven fabric sheet formed from the card web of the synthetic fiber containing at least 50% by weight of the heat-bonding fiber to form the tubular filtration layer. In the cartridge filter, the non-woven fabric sheet forming the filtration layer has been subjected to high-pressure liquid flow treatment in advance so that the oil agent adhesion rate of the filtration layer is 0.02% or less. , A non-foaming material having high transparency can be obtained, and a non-woven sheet formed of a synthetic fiber card web containing a heat-adhesive fiber is used as a part, so that a uniform filtration layer without separation and separation ( 4) is obtained. Further, the outer layer of the filtration layer comprises 0% by weight or more of fibers having a circular cross section and a thickness of 0.5 denier or more, and the inner layer occupies 50% by weight or more of fibers having a wedge cross section and a thickness of 0.5 denier or less. The microfiltrate easily passes through the portion, and the microfiltrate is captured in the inner layer portion, so that the filtration efficiency is excellent. Therefore, the cartridge filter of the present invention is particularly suitable for a filter for a purified liquid, which is required to avoid mixing of an oil component (oil agent) in the filtered liquid, such as in the pharmaceutical industry and food industry.
第１図は、円筒状カートリッジフィルターの部分断面斜
視図、そして第２図は分割型複合繊維の断面図の一例を
示したものである。 1:カートリッジフィルター、2:筒状濾過層、2A:内層、2
B:外層。FIG. 1 is a partial sectional perspective view of a cylindrical cartridge filter, and FIG. 2 is an example of a sectional view of a splittable conjugate fiber. 1: Cartridge filter, 2: Cylindrical filtration layer, 2A: Inner layer, 2
B: Outer layer.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平２−21918（ＪＰ，Ａ) 特開 昭60−122019（ＪＰ，Ａ) 実開 平２−57114（ＪＰ，Ｕ) 実開 昭49−70563（ＪＰ，Ｕ) 特公 昭56−41290（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-21918 (JP, A) JP-A-60-122019 (JP, A) Actual opening Flat 2-57114 (JP, U) Actual opening Sho-49- 70563 (JP, U) Japanese Patent Sho 56-41290 (JP, B2)
Claims (1)
成繊維のカードウェブから形成された不織布シートが捲
回された筒状濾過層がそれぞれ濾過精度の異なる内層と
外層とにより形成されてなるカートリッシフィルターに
おいて、該内層は繊維断面が円形で２つの成分が各々４
つ以上くさび形に交互に配置された熱接着性分割型複合
繊維が分割された太さ0.5デニール以下のくさび形極細
繊維を50重量％以上含む不織布シートの捲回によって形
成され、該外層は太さ0.5デニール以上の繊維断面が円
形の熱接着性繊維を50重量％以上含む不織布シートの捲
回によって形成され、上記内外層共目付は20〜150g/m2
かつ油剤付着率が0.02％以下であることを特徴とするカ
ートリッジフィルター。1. A tubular filtration layer formed by winding a non-woven fabric sheet made of a synthetic fiber card web containing at least 50% by weight of a heat-bondable fiber, the inner filtration layer and the outer filtration layer having different filtration accuracy. In the Cartrissi filter, the inner layer has a circular fiber cross section and two components are 4
Formed by winding a nonwoven fabric sheet containing 50% by weight or more of wedge-shaped ultrafine fibers having a thickness of 0.5 denier or less obtained by dividing the heat-adhesive splittable conjugate fibers alternately arranged in a wedge shape of three or more, and the outer layer is thick. It is formed by winding a non-woven sheet containing 50% by weight or more of a thermo-adhesive fiber having a circular cross section of 0.5 denier or more and a circular cross section, and the joint weight of the inner and outer layers is 20 to 150 g / m 2
A cartridge filter characterized by having an oil agent adhesion rate of 0.02% or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2226213A JPH07102292B2 (en) | 1990-08-27 | 1990-08-27 | Cartridge filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2226213A JPH07102292B2 (en) | 1990-08-27 | 1990-08-27 | Cartridge filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04108506A JPH04108506A (en) | 1992-04-09 |
| JPH07102292B2 true JPH07102292B2 (en) | 1995-11-08 |
Family
ID=16841672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2226213A Expired - Lifetime JPH07102292B2 (en) | 1990-08-27 | 1990-08-27 | Cartridge filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07102292B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5753330A (en) * | 1994-12-22 | 1998-05-19 | Chisso Corporation | Cylindrically shaped product |
| JP2007083209A (en) * | 2005-09-26 | 2007-04-05 | Yamaha Motor Co Ltd | Water purifying filter, and manufacturing method of self-supporting cylindrical hollow body for the water purifying filter |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4970563U (en) * | 1972-09-07 | 1974-06-19 | ||
| JPS5641290A (en) * | 1979-09-13 | 1981-04-17 | Toshihiro Nakai | Production of self-luminous paint |
| JPS60122019A (en) * | 1984-07-25 | 1985-06-29 | Kanebo Ltd | Filter |
| JP2717805B2 (en) * | 1988-07-11 | 1998-02-25 | チッソ株式会社 | Manufacturing method of filter element |
| JPH0257114U (en) * | 1988-10-19 | 1990-04-25 |
-
1990
- 1990-08-27 JP JP2226213A patent/JPH07102292B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04108506A (en) | 1992-04-09 |
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