JPH034912A - Filter cloth and its manufacture - Google Patents
Filter cloth and its manufactureInfo
- Publication number
- JPH034912A JPH034912A JP13697589A JP13697589A JPH034912A JP H034912 A JPH034912 A JP H034912A JP 13697589 A JP13697589 A JP 13697589A JP 13697589 A JP13697589 A JP 13697589A JP H034912 A JPH034912 A JP H034912A
- Authority
- JP
- Japan
- Prior art keywords
- denier
- treatment
- filter cloth
- cloth
- less
- 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
- 239000004744 fabric Substances 0.000 title claims abstract description 65
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000000835 fiber Substances 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 21
- 229920001410 Microfiber Polymers 0.000 claims description 16
- 238000010521 absorption reaction Methods 0.000 claims description 15
- 238000001914 filtration Methods 0.000 abstract description 26
- 239000002245 particle Substances 0.000 abstract description 15
- 238000004140 cleaning Methods 0.000 abstract description 12
- 239000007787 solid Substances 0.000 abstract description 12
- 238000011001 backwashing Methods 0.000 abstract description 6
- 238000009991 scouring Methods 0.000 abstract description 4
- 229920002994 synthetic fiber Polymers 0.000 abstract description 4
- 239000012209 synthetic fiber Substances 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 239000010419 fine particle Substances 0.000 abstract description 3
- 238000007654 immersion Methods 0.000 abstract description 3
- 229920000728 polyester Polymers 0.000 abstract description 3
- 238000011086 high cleaning Methods 0.000 abstract description 2
- 238000004321 preservation Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 3
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009981 jet dyeing Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 230000002040 relaxant effect Effects 0.000 description 2
- 238000009958 sewing Methods 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- CXOFVDLJLONNDW-UHFFFAOYSA-N Phenytoin Chemical group N1C(=O)NC(=O)C1(C=1C=CC=CC=1)C1=CC=CC=C1 CXOFVDLJLONNDW-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 208000002352 blister Diseases 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000010855 food raising agent Nutrition 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005360 mashing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 230000037303 wrinkles Effects 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
本発明はたとえば原水中の浮遊物質や固体粒子などを連
続的に分離除去する自己洗浄型ドラム式濾過装置に用い
る濾過布および濾過布の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a filter cloth used in a self-cleaning drum-type filtration device that continuously separates and removes suspended solids and solid particles in raw water, and a method for manufacturing the filter cloth. It is something.
従来の技術
従来から用いられているたとえば自己洗浄型ドラム式濾
過装置に装填されている濾過布としては。BACKGROUND OF THE INVENTION Examples of filter cloths that have been used in the past include, for example, self-cleaning drum filters.
金属製の濾過網や合成繊維などの単繊維繊度が５デニ一
ル以上の太繊度フィラメント糸の比較的高密度織物など
を用いており、耐久性、振動状態での寸法安定性、ケー
キ離れ性などの性能を中心に選択されている。It uses relatively high-density fabrics made of thick filament yarns with a single fiber fineness of 5 denier or more, such as metal filtration nets and synthetic fibers, to achieve durability, dimensional stability under vibration conditions, and cake release properties. They have been selected mainly based on their performance.
発明が解決しようとする課題
しかしながら、上記の金属製の濾過網や太繊度単繊維糸
の高密度織物などからなる濾過布は、濾過性能がかなり
低いレベルで、固体粒子径の小さい物質の除去が困難で
、やむを得ず凝集剤を使用してきた。Problems to be Solved by the Invention However, the above-mentioned filter cloths made of metal filter nets or high-density fabrics made of thick monofilament yarns have a considerably low level of filtration performance, and are difficult to remove substances with small solid particle diameters. It was difficult and we had no choice but to use flocculants.
本発明は上記のような問題を解決するもので。The present invention solves the above problems.
凝集剤を使用することなく、粒子径の小さい固体粒子な
どを除去することができる濾過性能のすぐれた濾過布お
よび濾過布の製造方法を提供することを目的とするもの
である。It is an object of the present invention to provide a filter cloth with excellent filtration performance capable of removing solid particles having a small particle size without using a flocculant, and a method for manufacturing the filter cloth.
課題を解決するための手段
上記の課題を解決するために本発明の濾過布は、少なく
とも一部が単繊維繊度１デニール以下の極細繊維である
立毛布帛からなり、吸水性を有するものであり、また濾
過布の製造方法は、少なくとも一部に単繊維繊度１デニ
ール以下の極細繊維を用いて製編織した布帛を、吸水性
処理するとともに立毛処理することを特徴とするもので
ある。Means for Solving the Problems In order to solve the above problems, the filter cloth of the present invention is made of a raised fabric, at least a part of which is ultrafine fibers with a single fiber fineness of 1 denier or less, and has water absorbency. Further, the method for producing a filter cloth is characterized in that a cloth that is knitted and woven using ultrafine fibers having a single fiber fineness of 1 denier or less in at least a portion thereof is subjected to a water absorption treatment and a napping treatment.
本発明の濾過布における単繊維繊度が１デニル以下の極
細繊維は、ポリエステル系、ポリアミド系などの合成繊
維が挙げられるが、立毛処理や吸水性処理などの加工性
等を考慮するとポリエステル系合成繊維を用いることが
好ましい。この単繊維繊度１デニール以下の極細繊維は
少なくとも一部、すなわち経糸および／または緯糸の一
部あるいは経糸と緯糸の全部に用い、粒子径の小さい固
体粒子などを効率よく捕集することができる。The ultrafine fibers having a single fiber fineness of 1 denyl or less in the filter cloth of the present invention include synthetic fibers such as polyester and polyamide. It is preferable to use This ultrafine fiber having a single fiber fineness of 1 denier or less is used for at least a portion of the warp and/or weft, or all of the warp and weft, and can efficiently collect solid particles with small particle diameters.
濾過操作において、捕集性能特に捕集可能な最小粒子径
は、濾過布の単繊維繊度に大きく依存し。In filtration operations, the collection performance, particularly the minimum particle size that can be collected, largely depends on the fineness of the single fibers of the filter cloth.
単繊維繊度１デニール以下の極細繊維の存在により、捕
集可能な固体粒子の粒子径が帰路的に微細化する。また
濾過布の固体粒子捕集性能は、凹凸感の少ない偏平表面
のものより立毛表面のものがすぐれており、しかも立毛
表面の布帛とした場合も毛羽のほぐれ性２毛玉発生防止
などの点から単繊維繊度１デニール以下の極細繊維が好
適である。Due to the presence of ultrafine fibers with a single fiber fineness of 1 denier or less, the particle size of the solid particles that can be collected becomes finer in the return process. In addition, the solid particle collection performance of filter cloth with a raised surface is superior to that with a flat surface with less unevenness, and even when the fabric is used with a raised surface, it has a good ability to loosen the fluff, 2 to prevent the formation of pilling, etc. Ultrafine fibers having a single fiber fineness of 1 denier or less are suitable.
このように単繊維繊度が１デニール以下の極細繊維を少
なくとも一部に用いることが、捕集効率。In this way, using ultrafine fibers with a single fiber fineness of 1 denier or less for at least part of the fibers improves the collection efficiency.
強度保持、加工性の面で必要であり、この単繊維繊度１
デニ一ル以上の極細繊維が存在しないと、繊維間隙が大
きく、濾過布としての捕集効率が低い。単繊維繊度１デ
ニール以下の極細繊維の形態は、原糸、仮撚加工糸のい
ずれでもよいが、用いる繊維糸条の総繊度は５０〜３０
０デニ一ル程度が好ましく、５０デニ一ル未満の場合は
引裂や引張強力が低く、また３００デニールを超えると
目付の増大やコストの上昇につながる。また単繊維繊度
１デニール以下の極細繊維は、従来から知られている海
鳥繊維法、高速紡糸延伸法９割繊法などのいずれの方法
で製造したものでもよい。This single fiber fineness of 1 is necessary in terms of strength retention and processability.
If ultrafine fibers of one denier or more are not present, the fiber gaps will be large and the collection efficiency as a filter cloth will be low. The ultrafine fibers with a single fiber fineness of 1 denier or less may be in the form of raw yarn or false twisted yarn, but the total fineness of the fiber yarn used is 50 to 30.
It is preferably about 0 denier, and if it is less than 50 denier, tearing and tensile strength will be low, and if it exceeds 300 denier, it will lead to an increase in area weight and cost. Further, the ultrafine fiber having a single fiber fineness of 1 denier or less may be produced by any conventionally known method such as the seabird fiber method, the high speed spinning and drawing method, and the 90% fiber method.
本発明の濾過布においては、上記の単繊維繊度１デニー
ルの極細繊維を少なくとも一部に用いてＩＪ編織するが
、濾過捕集性能を考慮して高密度組織の織物が好ましく
、組織としては平Ｍ１織、斜文組織、朱子組織などのい
ずれでもよいが、起毛加工性を考慮すると緯朱子組織が
よく、特に捕集効率の向上および起毛後の引裂強力保持
の点から両面緯朱子組織を採用することが望ましい。In the filter cloth of the present invention, the above-mentioned ultrafine fibers with a single fiber fineness of 1 denier are used for at least a part of the IJ weaving, but in consideration of filtration and collection performance, a fabric with a high density structure is preferable, and the structure is flat. Any of the M1 weave, diagonal weave, satin weave, etc. may be used, but weft satin weave is better in terms of napping processability, and double-sided weft satin weave is particularly preferred from the viewpoint of improving collection efficiency and maintaining tear strength after napping. It is desirable to do so.
製編織した布帛は通常の精練を行ない、次いで吸水性を
付与する吸水性処理を行なう。吸水性処理の方法として
は、加工液剤による方法やプラズマ処理による方法など
があるが、加工薬剤の高温浸漬などによる吸尽法が耐久
性の点から適しており、たとえばポリエステル系合成繊
維の疎水性を親水化することにより吸水性を付与する。The fabric that has been knitted and woven is subjected to ordinary scouring, and then subjected to a water-absorbing treatment to impart water-absorbing properties. Methods for water absorption treatment include methods using processing fluids and plasma treatment, but exhaustion methods such as high-temperature immersion in processing chemicals are suitable from the viewpoint of durability. It imparts water absorbency by making it hydrophilic.
親水性に変換した布帛は、親油性の汚れが付きにくいな
ど、理由は明確ではないが、たとえば自己洗浄型ドラム
式濾過装置の濾過布として用いた場合は。For reasons that are not clear, for example, a fabric that has been converted to hydrophilic properties is less likely to attract lipophilic stains, but for example, when used as a filter fabric for a self-cleaning drum-type filtration device.
逆洗効果が高まり、また目詰まりが起りにくく耐久性の
ある驚異的な濾過性能を発揮する。使用する加工薬剤、
加工方法としては、従来から知られている吸水性処理方
法を採用できる。たとえば、高分子系吸水加工剤で分子
量が１０００〜３０００のポリエチレングリコールとテ
レフタル酸の重縮合物を５〜２０％ｏ、ｗ、ｆ、添加し
た水溶液中で５１００℃以上で１０分間以上処理するこ
とにより、耐久性のあるすぐれた吸水性能を付与するこ
とができる。吸水性処理の処理機としては、たとえば布
帛の形態により異なるが、高温浸漬処理が可能な高圧液
流染色機を用いることができる。吸水性としては、２０
℃、６５％ＲＨの室内に一昼夜放置して調湿した試料布
帛の表面に、４００ｍ Ｑの水滴を滴下し、水滴の特殊
な反射が無くなるまでの時間を測定して５秒以下のもの
がよく、特に１秒以下のものが望ましい。It enhances the backwashing effect, and exhibits amazing filtration performance that is less likely to clog and is durable. processing chemicals used;
As a processing method, a conventionally known water absorption treatment method can be employed. For example, processing at 5100°C or higher for 10 minutes or more in an aqueous solution containing a polycondensate of polyethylene glycol and terephthalic acid with a molecular weight of 1000 to 3000 at a concentration of 5 to 20% O, W, F using a polymeric water absorption finishing agent. This makes it possible to provide durable and excellent water absorption performance. As a treatment machine for water absorption treatment, a high-pressure jet dyeing machine capable of high-temperature immersion treatment can be used, although it varies depending on the form of the fabric, for example. Water absorption is 20
Water droplets of 400 mQ are dropped on the surface of a sample fabric that has been left in a room at 65% RH for a day and night to condition the humidity, and the time taken for the special reflection of the water droplets to disappear is measured. In particular, one second or less is desirable.
次いで、立毛処理を行なう。この立毛処理としては上記
の吸水性処理の前あるいは後のいずれかの工程で行なえ
ばよいが、吸水性処理の前に行なうと、起毛した立毛が
吸水性処理中に揉まれて集束し、毛玉発生あるいは毛布
調となるなどのおそれがあり、したがって立毛処理は吸
水性処理の後に行なうのが好ましい。立毛処理における
起毛加工は、針布起毛機により行なえばよく、これによ
り毛羽長が比較的長くなり、しかも立毛密度が高くなる
。このようにして立毛を形成することにより、自己洗浄
型ドラム式濾過装置の濾過布として用いたとき、水流に
よって逆洗浄を行ない、濾過布巾に滞留している粒子な
どを洗い出しやすく。Next, a hair raising treatment is performed. This raising treatment can be carried out either before or after the above-mentioned water absorbing treatment, but if it is performed before the water absorbing treatment, the raised hair will be rubbed and bundled during the water absorbing treatment, and the hair will become concentrated. There is a risk of blistering or a blanket-like appearance, so it is preferable to carry out the napping treatment after the water-absorbing treatment. The napping process in the napping process may be carried out using a cloth napping machine, which results in a relatively long nap length and a high nap density. By forming the nap in this manner, when used as a filter cloth for a self-cleaning drum type filtration device, it is easy to perform backwashing with water flow and wash out particles etc. staying in the filter cloth.
また立毛の毛の方向が水流によって変化し、洗浄すれば
毛羽の向きが変化して洗浄効率が高くなり。In addition, the direction of the fluff changes depending on the water flow, and when washed, the direction of the fluff changes, increasing cleaning efficiency.
吸水性の効果と相俟って、さらに洗浄時間の短縮が可能
となり、耐久性のあるすぐれた濾過性能を発揮する。Combined with its water-absorbing properties, it makes it possible to further shorten cleaning time and exhibits excellent, durable filtration performance.
立毛処理を行なった布帛は、通常のヒートセットを行な
い、皺のばし、寸法安定性をはかった後。The fabric that has undergone the napped treatment is then subjected to regular heat setting to smooth out wrinkles and check for dimensional stability.
濾過布として・たとえば自己洗浄型ドラム式濾過装置に
所定の大きさに裁断して装填すればよい、裁断方法とし
ては、端部がほつれないような溶融裁断や端部のミシン
縫製が好ましい。The filter cloth may be cut into a predetermined size and loaded into, for example, a self-cleaning drum-type filtration device.As for the cutting method, it is preferable to cut by melting or sewing the edges with a sewing machine so that the edges do not fray.
作用
本発明の濾過布は、自己洗浄型ドラム式濾過装置などの
濾過布として装着すれば、少なくとも一部が単繊維繊度
１デニール以下の極細繊維からなり、かつ立毛と吸水性
とを有しているので、粒子径の微細な固体粒子などを効
率よく捕集できるとともに、逆洗時間の短縮がはかれ、
かつ洗浄効率が高く、しかも耐久性がすぐれている。Function When the filter cloth of the present invention is installed as a filter cloth in a self-cleaning drum type filter device, etc., at least a part thereof is made of ultrafine fibers with a single fiber fineness of 1 denier or less, and has napping and water absorbency. This makes it possible to efficiently collect solid particles with fine particle diameters, and also reduces backwashing time.
It also has high cleaning efficiency and excellent durability.
実施例
経糸にポリエステルマルチフィラメント糸７５デニール
／３６フイラメントの仮撚加工糸を用い、緯糸に極細ポ
リエステルマルチフィラメント糸１１０デニール／３３
６フイラメント（単繊維繊度的０．３３デニール）を用
いて、両面緯二重５枚朱子織物（生機密度；経１１０本
／２．５４ｃｍ、緯１６４本／２．５４ａｍ）をウォー
タージェットルームにより高密度に製織した。Example: False-twisted polyester multifilament yarn 75 denier/36 filaments was used for the warp, and ultrafine polyester multifilament yarn 110 denier/33 filament was used for the weft.
Using 6 filaments (single fiber fineness: 0.33 denier), a double-sided double-sided 5-ply satin fabric (gray density: 110 warp/2.54 cm, weft 164 thread/2.54 am) was fabricated using a water jet loom. Woven densely.
得られた生機を拡布状で移送しつつ非イオン界面活性剤
を含むアルカリ浴で通常のリラックス精練を行ない、液
流染色機を用い、下記処方で１３０℃、３０分間の吸水
性処理を行なった。The obtained greige fabric was transferred in the form of a spread cloth and subjected to the usual relaxing scouring in an alkaline bath containing a nonionic surfactant, and then was subjected to water absorption treatment at 130°C for 30 minutes using the following recipe using a jet dyeing machine. .
５Ｒ−１０００（親水化加工剤：高松油脂■１） ｔｏ
％０１１ｆ蟻 酸（９８％） ０
．１ｍＱ／Ｑ続いて水洗、脱水後、ロール型乾燥機によ
り乾燥し、ピンテンターにより１７０℃、１分間の中間
セットした後、市販の起毛剤をｌｏｇ／Ｑの水溶液とし
て絞り率６０％で付与し、次いで油圧式針布起毛機を使
用して布速１５ ｍ ／分で表７回、裏４回の起毛加工
を行ない立毛布帛を得た。この立毛布帛すなわち濾過布
の目付は２１５ｇ／ｍであった。この濾過布の吸水性能
の測定結果を第１表に示した。5R-1000 (hydrophilic processing agent: Takamatsu Yushi ■1) to
%011f Formic acid (98%) 0
．． After 1 mQ/Q, washing with water and dehydration, drying with a roll dryer, and intermediate setting at 170°C for 1 minute with a pin tenter, a commercially available raising agent was applied as an aqueous solution of log/Q at a squeezing rate of 60%, Next, using a hydraulic needle cloth raising machine, the fabric was raised 7 times on the front side and 4 times on the back side at a cloth speed of 15 m/min to obtain a raised fabric. The fabric weight of this napped fabric, that is, the filter cloth, was 215 g/m. Table 1 shows the measurement results of the water absorption performance of this filter cloth.
次に、上記のようにして得た濾過布を、自己洗浄型ドラ
ム式濾過装置の内側に、所定の大きさに両端を溶融裁断
して装着した。Next, the filter cloth obtained as described above was installed inside a self-cleaning drum type filtration device by melting and cutting both ends to a predetermined size.
自己洗浄型ドラム式濾過装置による濾過条件を、水位差
（原水と処理水との水面差）約２０ｃｍ、ドラム回転数
６．３ｒ、ｐ、ｍ、逆洗性シャワースプレー斌内外共に
０ 、２〜０ 、３ ｒｎ’ ／ ｈ ｒ、濾過面積０
．２６ｍとして。The filtration conditions for the self-cleaning drum type filtration device were: water level difference (water level difference between raw water and treated water) of approximately 20 cm, drum rotation speed of 6.3 r, p, m, and backwashing shower spray both inside and outside 0, 2 ~ 0, 3 rn'/hr, filtration area 0
．． As 26m.
活性汚泥上りの原水について濾過試験を行なった。A filtration test was conducted on raw water from activated sludge.
なおこの自己洗浄型ドラム式濾過装置は、原水がドラム
内側から外側に立毛密度の多い濾過布の表面から裏面に
移動するときに、原水中の浮遊物質。This self-cleaning drum-type filtration device removes suspended solids in the raw water as it moves from the inside of the drum to the outside of the filter cloth, which has a high density of naps.
砂粒、ゴムなどを除去できる。濾過性能の測定結果を第
２表に示した。Can remove sand grains, rubber, etc. The measurement results of filtration performance are shown in Table 2.
比較例１゜ 上記の実施例で用いたのと同様の生機を用い。Comparative example 1゜ A gray fabric similar to that used in the above example was used.
、、リラックス精練後の吸水性処理を行なわないほかは
上記実施例と同様に立毛処理を行ない、得られた立毛布
帛を濾過布として用いて上記実施例の場合と同様の装置
と条件で濾過試験を行なった。吸水性能を第１表に、濾
過性能を第２表にそれぞれ示した。,, Raised treatment was carried out in the same manner as in the above example, except that the water absorbency treatment after relaxing scouring was not performed, and a filtration test was conducted using the obtained raised fabric as a filter cloth under the same equipment and conditions as in the above example. I did it. The water absorption performance is shown in Table 1, and the filtration performance is shown in Table 2.
比較例２゜
上記比較例１で得た立毛布帛に、下記処方ではっ水加工
を行なった。Comparative Example 2 The raised fabric obtained in Comparative Example 1 above was treated with water repellency using the following formulation.
ポロンＭＲ（シリコン系はっ水剤：信越化学工業＠製）
１０ｇ／ＱカタリストＯ１（ポロン曲用触媒）
Ｉｇ＃１絞り率：６０％、予備乾燥：
１１０℃、１分、キュア：１７０℃、１分
得られた加工布帛を濾過布として用いて上記実施例の場
合と同様の装置と条件で濾過試験を行なった。吸水性能
を第１表に、濾過性能を第２表にそれぞれ示した。Poron MR (silicon-based water repellent: manufactured by Shin-Etsu Chemical @)
10g/Q Catalyst O1 (Poron bending catalyst)
Ig#1 squeezing rate: 60%, pre-drying:
110° C., 1 minute, cure: 170° C., 1 minute Using the obtained processed fabric as a filter cloth, a filtration test was conducted using the same equipment and conditions as in the above example. The water absorption performance is shown in Table 1, and the filtration performance is shown in Table 2.
〈以下余白〉
第
１
表
（註）１）滴下法・・・試料を２０℃、６５％ＲＨの室
内に一昼夜放置して調湿し、その表面に０．０４ｍＱの
水滴を滴下して水滴の特殊な反射が無くなるまでの時間
を測定する。<Margins below> Table 1 (Notes) 1) Dripping method: The sample was left in a room at 20°C and 65% RH overnight to adjust the humidity, and 0.04 mQ water droplets were dropped on the surface of the sample. Measure the time until the special reflection disappears.
２）吸上げ法・・・上記滴下法の場合と同様に調湿した
幅２．５ＣＩ１１の試、料が３分間に吸上げる水の高さ
を測定する。2) Sucking method: Measure the height of water that a sample with a width of 2.5 CI11, which has been humidity-controlled in the same way as in the case of the above-mentioned dropping method, wicks up in 3 minutes.
く以下余白〉
第１表に示すように実施例の濾過布は極めてすぐれた吸
水性能を有している。また第２表に示す結果から明らか
なように、比較例１の濾過布は、Ｓ、Ｓ、除去率が９５
％以上ですぐれているが、２４時間後には目詰まりが発
生し、極端に濾過水量が低下し、比較例２の濾過布もＳ
、Ｓ、除去性はすぐれているが４８時間後には目詰まり
により極端に低下する。これに対し本実施例の濾過布は
長時間にわたって目詰まりを生じることなくすぐれたＳ
。(Left below) As shown in Table 1, the filter cloths of Examples have extremely excellent water absorption performance. Furthermore, as is clear from the results shown in Table 2, the filter cloth of Comparative Example 1 has an S, S removal rate of 95
% or more, but clogging occurs after 24 hours and the amount of filtrated water decreases extremely, and the filter cloth of Comparative Example 2 also has S
, S. Although the removability is excellent, it deteriorates extremely after 48 hours due to clogging. In contrast, the filter cloth of this example has excellent S without clogging for a long time.
.
Ｓ、除去性を示し、抜群の濾過性能を有しており。S, shows removability and has outstanding filtration performance.
これは少なくとも一部に極細繊維を用い、かつ吸水性処
理および立毛処理を行なった相乗効果によるものである
。This is due to the synergistic effect of using ultrafine fibers in at least a portion and performing water absorption treatment and napping treatment.
発明の効果
以上のように本発明の濾過布においては、少なくとも一
部に単繊維繊度が１デニール以下の極細繊維を用いた。Effects of the Invention As described above, in the filter cloth of the present invention, ultrafine fibers having a single fiber fineness of 1 denier or less are used at least in part.
吸水性を有する立毛布帛からなるので、粒子径の微細な
固体粒子などを長期にわたって効率よく捕集でき、また
逆洗性がすぐれ、耐久性も良好で、極めてすぐれた濾過
性能を有しており、また本発明の濾過布の製造方法によ
り、上記のような濾過性能のすぐれた濾過布を容易に得
ることができる。Since it is made of a raised fabric that has water absorption properties, it can efficiently collect fine solid particles over a long period of time, and has excellent backwashing properties, good durability, and extremely excellent filtration performance. Furthermore, by the method for manufacturing a filter cloth of the present invention, a filter cloth having excellent filtration performance as described above can be easily obtained.
Claims (1)
繊維である立毛布帛からなり、吸水性を有することを特
徴とする濾過布。 ２、少なくとも一部に単繊維繊度１デニール以下の極細
繊維を用いて製編織した布帛を、吸水性処理するととも
に立毛処理することを特徴とする濾過布の製造方法。[Scope of Claims] 1. A filter cloth characterized in that at least a portion thereof is made of a raised fabric made of ultrafine fibers with a single fiber fineness of 1 denier or less, and has water absorbency. 2. A method for manufacturing a filter cloth, which comprises subjecting a fabric knitted and woven using ultrafine fibers having a single fiber fineness of 1 denier or less at least in part to water absorption treatment and napping treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13697589A JPH034912A (en) | 1989-05-30 | 1989-05-30 | Filter cloth and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13697589A JPH034912A (en) | 1989-05-30 | 1989-05-30 | Filter cloth and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH034912A true JPH034912A (en) | 1991-01-10 |
Family
ID=15187845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13697589A Pending JPH034912A (en) | 1989-05-30 | 1989-05-30 | Filter cloth and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH034912A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005058940A (en) * | 2003-08-18 | 2005-03-10 | Unitica Fibers Ltd | Filter cloth |
| JP2008279339A (en) * | 2007-05-09 | 2008-11-20 | Jfe Engineering Kk | Solid/liquid separation apparatus |
-
1989
- 1989-05-30 JP JP13697589A patent/JPH034912A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005058940A (en) * | 2003-08-18 | 2005-03-10 | Unitica Fibers Ltd | Filter cloth |
| JP4557520B2 (en) * | 2003-08-18 | 2010-10-06 | ユニチカ株式会社 | Filter cloth for filter press |
| JP2008279339A (en) * | 2007-05-09 | 2008-11-20 | Jfe Engineering Kk | Solid/liquid separation apparatus |
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