JP3028900B2 - Manufacturing method of membrane element - Google Patents
Manufacturing method of membrane elementInfo
- Publication number
- JP3028900B2 JP3028900B2 JP5176318A JP17631893A JP3028900B2 JP 3028900 B2 JP3028900 B2 JP 3028900B2 JP 5176318 A JP5176318 A JP 5176318A JP 17631893 A JP17631893 A JP 17631893A JP 3028900 B2 JP3028900 B2 JP 3028900B2
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- filter plate
- filtration membrane
- nonwoven fabric
- 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
Description
【０００１】[0001]
【産業上の利用分野】本発明は、上水や廃水などの濾過
または濃縮に用いられる膜分離装置の膜エレメントの製
造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a membrane element of a membrane separation apparatus used for filtering or concentrating water or wastewater.
【０００２】[0002]
【従来の技術】この種の膜分離装置として、たとえば複
数の膜エレメントを適当な間隔で平行に配置した浸漬型
膜装置が知られている。このような膜エレメントにおい
ては、矩形平板状の濾板に、一端が濾板の表面に開口す
るとともに他端が濾過処理水吸引管に連通する濾過処理
水流路を形成し、濾板の表面を覆って有機濾過膜を設け
ている。そして、濾板と濾過膜との間に所定の間隙を形
成するスペーサを設けている。処理を行うときは、膜エ
レメントを槽内の被処理水中に浸漬状態とし、膜過処理
水吸引管を通して負圧を与えることにより、濾過膜で被
処理水を濾過している。2. Description of the Related Art As this kind of membrane separation apparatus, for example, an immersion type membrane apparatus in which a plurality of membrane elements are arranged in parallel at appropriate intervals is known. In such a membrane element, a filtered water flow path is formed in a rectangular flat filter plate, one end of which is open to the surface of the filter plate and the other end communicates with the filtered water suction pipe, and the surface of the filter plate is formed. An organic filtration membrane is provided to cover. Further, a spacer for forming a predetermined gap between the filter plate and the filtration membrane is provided. When performing the treatment, the membrane element is immersed in the water to be treated in the tank, and a negative pressure is applied through a membrane overtreatment water suction pipe to filter the water to be treated with the filtration membrane.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記の
ような膜エレメントの製作に際して、ポリオレフィン
系、ポリスルホン系などの有機濾過膜を接着剤により固
定する場合、膜素材自体が溶剤に溶けるため容易に樹脂
製濾板に接着できるが、接着部分の境界において濾過膜
が破れるなど、強度上問題がある。However, when the above-mentioned membrane element is manufactured, when an organic filtration membrane of a polyolefin or polysulfone type is fixed with an adhesive, the membrane material itself is easily dissolved in a solvent because the membrane material itself is dissolved in a solvent. Although it can be adhered to a filter plate, there is a problem in strength such as a filter membrane being broken at the boundary of the adhered portion.
【０００４】そこで、強度を向上させるために不織布を
支持材とした濾過膜が使用されており、支持材としての
不織布には、製造の容易さから、主として飽和ポリエス
テルのような溶剤に溶けにくい熱可塑性の樹脂が用いら
れている。しかし、このような溶剤に溶けにくい不織布
を支持材とした濾過膜を接着剤で固着させる場合、接着
剤の不織布への含浸で固定することになり、固化した接
着剤の強度、耐久性、耐薬品性などによって固着強度が
左右されるため、比較的固着強度が弱いという問題があ
る。特に塩化第２鉄や硫酸バンドを添加する凝集分離膜
では、耐薬品性が十分でないために濾過膜のはがれが生
じることがある。またこの場合、製作時に、溶剤によっ
て作業環境が悪化したり、乾燥・固化に時間がかかるな
どの問題がある。Therefore, a filtration membrane using a non-woven fabric as a support material is used to improve the strength, and the non-woven fabric as the support material is mainly made of a heat-resistant material that is hardly soluble in a solvent such as saturated polyester because of its ease of production. A plastic resin is used. However, when a nonwoven fabric that is difficult to dissolve in a solvent is used as a supporting material to fix a filtration membrane with an adhesive, the nonwoven fabric is fixed by impregnation of the nonwoven fabric with the adhesive, and the strength, durability, and durability of the solidified adhesive are fixed. Since the fixing strength is affected by chemical properties and the like, there is a problem that the fixing strength is relatively weak. In particular, a coagulation separation membrane to which ferric chloride or a sulfate band is added may cause peeling of the filtration membrane due to insufficient chemical resistance. Further, in this case, there are problems that the working environment is deteriorated by the solvent at the time of manufacturing, and it takes time to dry and solidify.
【０００５】テープにより粘着させる場合も、濾過膜が
剥離し易いという問題がある。また、物理的に固定する
場合は、膜エレメントの構造が複雑になるという問題が
ある。[0005] In the case of sticking with a tape, there is a problem that the filtration membrane is easily peeled off. In the case of physically fixing, there is a problem that the structure of the membrane element becomes complicated.
【０００６】本発明は上記問題点を解決するもので、樹
脂製濾板と濾過膜とを容易かつ確実に固定できるように
することを目的とするものである。An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to enable a resin filter plate and a filtration membrane to be fixed easily and reliably.
【０００７】[0007]
【課題を解決するための手段】上記問題を解決するため
に本発明の膜エレメントの製造方法は、樹脂製濾板の表
面に不織布を支持材とした濾過膜を配置し、濾過膜の周
縁部に超音波を照射し、溶融した樹脂製濾板の溶融樹脂
が濾過膜の不織布に含浸することにより、両者を溶着さ
せて線状のシール部を形成することを特徴とする。In order to solve the above-mentioned problems, a method for producing a membrane element according to the present invention comprises disposing a filtration membrane using a nonwoven fabric as a support on the surface of a resin filter plate, and surrounding the filtration membrane.
Irradiation of ultrasonic waves to the edge and molten resin on the resin filter plate
Is characterized by impregnating a nonwoven fabric of a filtration membrane, thereby fusing them together to form a linear seal portion .
【０００８】[0008]
【作用】上記構成により、樹脂製濾板を溶融させ、濾過
膜の支持材としての不織布にその溶融樹脂を含浸させる
か、あるいは濾板と不織布をともに溶融させることで、
濾板と濾過膜とを溶着固定することができる。According to the above construction, the resin filter plate is melted and the molten resin is impregnated into the nonwoven fabric as a support for the filtration membrane, or the filter plate and the nonwoven fabric are both melted.
The filter plate and the filtration membrane can be fixed by welding.
【０００９】[0009]
【実施例】以下、図面を用いて本発明の膜エレメントの
製造方法を説明する。図１から図４において、１は矩形
平板状の濾板であり、２はその表面を覆って配置された
濾過膜であり、３はスペーサである。濾板１はＡＢＳ樹
脂などの熱可塑性樹脂で板状または額縁状などの形状に
製作されていて、図示を省略した濾過処理水流路が形成
されるとともに、この濾過処理水流路に連通して濾過処
理水吸引管４が設けられている。濾過膜２は飽和ポリエ
ステルなどの熱可塑性の不織布を支持材として表面に膜
を一体に形成したものであり、その周縁部５において濾
板１に固定されている。スペーサ３は、濾過膜２と同じ
大きさまたは濾過膜２より小さく形成されるが、濾過膜
２の支持材としての不織布によって濾過処理水の流路と
なる間隙が確保される場合は必須ではない。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for manufacturing a membrane element according to the present invention will be described with reference to the drawings. 1 to 4, reference numeral 1 denotes a rectangular flat filter plate, reference numeral 2 denotes a filtration membrane disposed so as to cover the surface thereof, and reference numeral 3 denotes a spacer. The filter plate 1 is made of a thermoplastic resin such as an ABS resin in a plate-like or frame-like shape. A filter-treated water flow path (not shown) is formed, and the filter plate 1 communicates with the filter-treated water flow path to perform filtration. A treated water suction pipe 4 is provided. The filtration membrane 2 is formed by integrally forming a membrane on the surface using a thermoplastic non-woven fabric such as saturated polyester as a support material, and is fixed to the filter plate 1 at a peripheral portion 5 thereof. The spacer 3 is formed to have the same size as the filtration membrane 2 or smaller than the filtration membrane 2, but is not essential when a nonwoven fabric as a support material of the filtration membrane 2 secures a gap to be a flow path of the filtration water. .
【００１０】上記のような膜エレメントを製作する際に
は、濾板１、濾過膜２、スペーサ３を図示したように配
置し、濾過膜２の上から、ロータリー式または濾過膜が
小さい場合は固定式のホーン６を適用することにより、
濾板１と濾過膜２とを超音波融着させる。このとき、濾
過膜２の支持材としての不織布は飽和ポリエステルなど
で形成されているため例えば１４０℃以上の温度で溶融
するが、濾板１はＡＢＳ樹脂などで形成されているため
不織布より低い温度で溶融する。したがって、約１４０
℃より低い温度を用いた場合は、濾板１が溶融してその
溶融樹脂が不織布に含浸することで濾板１に濾過膜２が
固定され、約１４０℃より高い温度を用いた場合は、濾
板１と不織布がともに溶融することで濾板１に濾過膜２
が固定される。超音波融着法では内側から溶融しやすい
ため、図３に示したように、濾過膜２の上にセロハンな
どの耐熱性の強いテープ７を配置し、このテープ７を介
してホーン６を適用するのが効果的である。超音波融着
部は、図４に示したように、水密性を得るための線状の
シール部８と、濾過膜２の皺を防止するための点状の固
定部９とする。線状のシール部８は幅細く形成する方が
エネルギーの点でも溶着性の点でも有利である。点状の
固定部９は、点状に固定することで逃げができるためし
わを防止するもので、図示したように、線状のシール部
８に対して縦方向であっても横方向であってもよく、線
状のシール部８の内側または外側または両側に設けるこ
とができる。両面テープで膜を固定した上で、融着を行
ってもよい。When manufacturing the above membrane element, the filter plate 1, the filter membrane 2, and the spacer 3 are arranged as shown in the figure. By applying the fixed horn 6,
The filter plate 1 and the filter membrane 2 are ultrasonically fused. At this time, the nonwoven fabric as a support material of the filtration membrane 2 is formed of a saturated polyester or the like and thus melts at, for example, a temperature of 140 ° C. or higher. Melts. Therefore, about 140
When a temperature lower than 0 ° C. is used, the filter plate 1 is melted and the molten resin is impregnated into the nonwoven fabric, whereby the filter membrane 2 is fixed to the filter plate 1. When a temperature higher than about 140 ° C. is used, As the filter plate 1 and the nonwoven fabric melt together, the filter membrane 2
Is fixed. Since it is easy to melt from the inside by the ultrasonic fusion method, as shown in FIG. 3, a highly heat-resistant tape 7 such as cellophane is arranged on the filtration membrane 2 and a horn 6 is applied through the tape 7. It is effective to do. As shown in FIG. 4, the ultrasonic fusion parts include a linear seal part 8 for obtaining watertightness and a dotted fixing part 9 for preventing wrinkles of the filtration membrane 2. It is advantageous to form the linear seal portion 8 to be thin in terms of both energy and weldability. The point-like fixing portions 9 prevent the wrinkles because they can escape by being fixed in a point-like manner. As shown in FIG. It may be provided inside, outside, or both sides of the linear seal portion 8. After fixing the film with a double-sided tape, fusion may be performed.
【００１１】上記の超音波融着に代えて、局部加熱によ
って溶着させてもよい。Instead of the above ultrasonic welding, welding may be performed by local heating.
【００１２】[0012]
【発明の効果】以上のように本発明によれば、樹脂製濾
板を局部溶融させてその溶融樹脂を濾過膜の支持材とし
ての不織布に含浸させるか、あるいは樹脂製濾板と不織
布とをともに局部溶融させることによって濾板に濾過膜
を固定する構成としたことにより、接着剤で固定すると
きよりも強い固着強度が得られる。As described above, according to the present invention, the resin filter plate is locally melted and the molten resin is impregnated into a nonwoven fabric as a support for the filtration membrane, or the resin filter plate and the nonwoven fabric are combined with each other. By employing a configuration in which the filter membrane is fixed to the filter plate by locally melting both of them, a stronger fixing strength can be obtained than when the filter membrane is fixed with an adhesive.
【図１】本発明にもとづく一実施例の膜エレメントを示
した平面図である。FIG. 1 is a plan view showing a membrane element according to an embodiment of the present invention.
【図２】図１の膜モジュールの断面図である。FIG. 2 is a cross-sectional view of the membrane module of FIG.
【図３】本発明の製造方法の一工程を示した説明図であ
る。FIG. 3 is an explanatory view showing one step of the manufacturing method of the present invention.
【図４】本発明の製造方法における溶着固定の一実施例
を示した説明図である。FIG. 4 is an explanatory view showing one embodiment of welding and fixing in the manufacturing method of the present invention.
１ 樹脂製濾板 ２ 濾過膜 ５ 周縁部 DESCRIPTION OF SYMBOLS 1 Resin filter plate 2 Filtration membrane 5 Peripheral part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 師 正史 大阪府大阪市浪速区敷津東一丁目２番47 号 株式会社クボタ内 (72)発明者 添田 祐二 大阪府大阪市浪速区敷津東一丁目２番47 号 株式会社クボタ内 (56)参考文献 特開 昭59−156401（ＪＰ，Ａ) 特開 昭54−131576（ＪＰ，Ａ) 特開 平６−218240（ＪＰ，Ａ) 特開 平５−137974（ＪＰ，Ａ) 特開 平６−343840（ＪＰ，Ａ) 特開 平７−24270（ＪＰ，Ａ) 実開 昭63−35422（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B01D 63/08 B01D 63/00 500 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masafumi Shiki 2-47, Shikitsu Higashi, 1-chome, Namiwa-ku, Osaka-shi, Osaka (72) Inventor Yuji Soeda, Yuji Soeda-Higashiichi Shikitsu, Naniwa-ku, Osaka, Osaka JP-A-59-156401 (JP, A) JP-A-54-131576 (JP, A) JP-A-6-218240 (JP, A) 5-137974 (JP, A) JP-A-6-343840 (JP, A) JP-A-7-24270 (JP, A) JP-A-63-35422 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) B01D 63/08 B01D 63/00 500
Claims (1)
た濾過膜を配置し、濾過膜の周縁部に超音波を照射し、
溶融した樹脂製濾板の溶融樹脂が濾過膜の不織布に含浸
することにより、両者を溶着させて線状のシール部を形
成することを特徴とする膜エレメントの製造方法。1. A filter membrane using a nonwoven fabric as a support material is arranged on the surface of a resin filter plate, and ultrasonic waves are applied to the periphery of the filter membrane.
The molten resin of the molten resin filter plate impregnates the nonwoven fabric of the filtration membrane
Form, the sealing portion linear by welding both to
A method for producing a membrane element.
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5176318A JP3028900B2 (en) | 1993-07-16 | 1993-07-16 | Manufacturing method of membrane element |
| AU52163/93A AU655551B2 (en) | 1992-12-16 | 1993-12-03 | Filtration membrane cartridge |
| CA002110971A CA2110971C (en) | 1992-12-16 | 1993-12-08 | Filtration membrane cartridge |
| TW082110384A TW235926B (en) | 1992-12-16 | 1993-12-08 | |
| SG1996000783A SG42331A1 (en) | 1992-12-16 | 1993-12-10 | Filtration membrane cartridge |
| EP93119930A EP0602560B1 (en) | 1992-12-16 | 1993-12-10 | Filtration membrane cartridge |
| ES93119930T ES2121922T3 (en) | 1992-12-16 | 1993-12-10 | FILTERING MEMBRANE CARTRIDGE. |
| DE69320311T DE69320311T2 (en) | 1992-12-16 | 1993-12-10 | Filtration membrane module |
| NO934620A NO305109B1 (en) | 1992-12-16 | 1993-12-15 | Filtration Membrane Cartridge |
| US08/599,977 US5651888A (en) | 1992-12-16 | 1996-02-14 | Filtration membrane cartridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5176318A JP3028900B2 (en) | 1993-07-16 | 1993-07-16 | Manufacturing method of membrane element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0724271A JPH0724271A (en) | 1995-01-27 |
| JP3028900B2 true JP3028900B2 (en) | 2000-04-04 |
Family
ID=16011494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5176318A Expired - Lifetime JP3028900B2 (en) | 1992-12-16 | 1993-07-16 | Manufacturing method of membrane element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3028900B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7776214B2 (en) | 2005-02-23 | 2010-08-17 | Gs Yuasa Corporation | Membrane element |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008049239A (en) * | 2006-08-23 | 2008-03-06 | Gs Yuasa Corporation:Kk | Membrane element |
| KR101810708B1 (en) * | 2010-03-23 | 2017-12-19 | 도레이 카부시키가이샤 | Separation membrane and method for producing same |
-
1993
- 1993-07-16 JP JP5176318A patent/JP3028900B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7776214B2 (en) | 2005-02-23 | 2010-08-17 | Gs Yuasa Corporation | Membrane element |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0724271A (en) | 1995-01-27 |
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