JP2003275547A - Spiral type membrane element and manufacturing method therefor - Google Patents
Spiral type membrane element and manufacturing method thereforInfo
- Publication number
- JP2003275547A JP2003275547A JP2002080461A JP2002080461A JP2003275547A JP 2003275547 A JP2003275547 A JP 2003275547A JP 2002080461 A JP2002080461 A JP 2002080461A JP 2002080461 A JP2002080461 A JP 2002080461A JP 2003275547 A JP2003275547 A JP 2003275547A
- Authority
- JP
- Japan
- Prior art keywords
- flow path
- membrane
- permeation
- supply
- channel material
- 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
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、種々の流体（液体
あるいは気体）中に存在する特定成分を分離する分離操
作、または液体への気体溶解もしくは液体からの気体放
散といった気液接触操作などに用いられるスパイラル型
膜エレメント及びその製造方法に関する。詳しくはスパ
イラル型膜エレメントの構成部材である複数の流路材の
中空管への接続方法の改良に関するものである。TECHNICAL FIELD The present invention relates to a separation operation for separating a specific component existing in various fluids (liquid or gas), or a gas-liquid contact operation such as gas dissolution into a liquid or gas release from a liquid. The present invention relates to a spiral wound type membrane element and a method for producing the same. More specifically, the present invention relates to an improvement in a method of connecting a plurality of flow path members, which are constituent members of a spiral wound type membrane element, to a hollow tube.
【０００２】[0002]
【従来の技術】従来のスパイラル型膜エレメントは、２
枚の膜の透過側に透過側流路材を介在させて袋状に３辺
を封止した１組みの積層体（膜リーフ）を有孔の中空管
に接続し、接続した積層体を供給側流路材を介在させつ
つスパイラル状に巻回した構造が知られていた。また、
透過側の流路長を短くすべく、複数組みの積層体（膜リ
ーフ）を用いたものも知られている。2. Description of the Related Art The conventional spiral wound type membrane element has two
A set of laminated bodies (membrane leaves) in which three sides are sealed in a bag shape with a permeation side flow path material interposed on the permeation side of a single membrane is connected to a perforated hollow tube, and the connected lamination is A structure has been known in which a supply-side flow path material is interposed and spirally wound. Also,
It is also known to use a plurality of laminated bodies (membrane leaves) in order to shorten the flow path length on the permeation side.
【０００３】後者の基本構造としては、対向する膜の供
給側に供給側流路材を介在させ、対向する膜の透過側に
透過側流路材を介在させた積層体を有孔の中空管にスパ
イラル状に巻回してあり、供給側流路と透過側流路とが
直接連通しないための封止構造を備えるものが一般的で
ある。より具体的には、供給側流路材を膜の分離層側に
挟み込んだ二つ折り膜リーフ及びこれに隣接する透過側
流路材とからなる膜素材群の単数あるいは複数の積層体
を、有孔の中空管の周りに巻き付けたものが既に公知で
ある（例えば米国特許３，４１７，８７０号等）。As the latter basic structure, a laminated body having a supply side channel material on the supply side of the opposing membrane and a permeation side channel material on the permeation side of the opposing membrane is used as a perforated hollow body. It is generally wound around a pipe in a spiral shape, and is generally provided with a sealing structure for preventing direct communication between the supply-side flow passage and the permeation-side flow passage. More specifically, a single or a plurality of laminates of a membrane material group consisting of a bi-folded membrane leaf sandwiching the supply side channel material on the separation layer side of the membrane and a permeation side channel material adjacent thereto are provided. It is already known to wind a hollow tube around a hole (for example, US Pat. No. 3,417,870).
【０００４】この膜素材群の単数あるいは複数積層体を
形成する方法として、図５に示すように、膜１と供給側
流路材２からなる膜リーフ３と、透過側流路材４を重ね
て配置し、これを一定の間隔（中空管５の外周長さを膜
リーフ３の枚数分で除した長さ）ずらして積層体を作製
し、予め中空管５に接着した透過側流路材４を利用し
て、この積層体を中空管５に巻き付けていく方法が採用
されている。なお、図５は、膜リーフ３が各々独立して
連続しない形態（単独リーフ）を例示しているが、各々
の膜リーフ３の膜１が連続した形態も知られている。As a method of forming a single or plural laminated body of the membrane material group, as shown in FIG. 5, a membrane leaf 3 composed of a membrane 1 and a supply side flow passage material 2 and a permeation side flow passage material 4 are superposed. Are arranged at regular intervals (the outer peripheral length of the hollow tube 5 is divided by the number of the membrane leaves 3) to form a laminated body, and the permeate side flow adhered to the hollow tube 5 in advance. A method of winding the laminated body around the hollow tube 5 by using the road material 4 is adopted. Although FIG. 5 exemplifies a form in which the membrane leaves 3 do not continue independently (single leaf), a form in which the membranes 1 of the respective membrane leaves 3 continue is also known.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、このよ
うな従来のスパイラル型膜エレメントの製造方法では、
次のような種々の問題があった。
（１）膜リーフと透過側流路材を組み合わせたものを、
予め接着した１枚（又は少数枚）の透過液流路材のみを
利用して、等間隔がずれることなく、確実に巻き付けて
エレメントを形成するのは非常に困難である、（２）単
独リーフの場合、両サイド部に加えて外周側もシールす
る必要があり有効膜面積の低下、工数や材料（接着剤）
工数が増加する、（３）加工の必要の無い中空管以外の
部材を全て組み合わせてから中空管に巻き付けていくた
め、生産性の面では非常に生産効率が悪い。なお、上記
（１）のように膜リーフ及び透過側流路材の端部がずれ
た場合、分離膜の性能上、有効膜面積の減少による流量
の低下や封止構造の形成不良などが起こり易くなるとい
う問題がある。However, in such a conventional method for producing a spiral wound type membrane element,
There were various problems as follows. (1) A combination of the membrane leaf and the permeation-side channel material is
It is very difficult to form an element by securely winding it without using a single (or a small number) of permeated liquid flow path materials that have been bonded in advance, and without evenly shifting the intervals. (2) Single leaf In the case of, it is necessary to seal not only both side parts but also the outer peripheral side, reducing the effective film area, man-hours and materials (adhesive)
(3) Since all the members other than the hollow pipe that do not require processing are combined and wound around the hollow pipe, the production efficiency is extremely poor in terms of productivity. When the edges of the membrane leaf and the permeate-side channel material are displaced as in the above (1), the performance of the separation membrane causes a decrease in the flow rate due to a reduction in the effective membrane area and a defective formation of the sealing structure. There is a problem that it becomes easier.
【０００６】一方、特表平７−５０５０８１号公報に
は、全ての透過液流路材を予め中空管に溶接しておき、
これらの透過液流路材の間に連続する膜及び供給側流路
材を挿入した後、これらを中空管に巻き付けていく方法
が開示されている。On the other hand, in Japanese Patent Publication No. 7-505081, all permeate flow path members are previously welded to a hollow tube,
A method is disclosed in which a continuous membrane and a supply-side channel material are inserted between these permeate channel materials and then these are wound around a hollow tube.
【０００７】しかし、この方法では、膜リーフのずれは
防止し易いものの、透過液流路材を中空管に等間隔で接
着等する際の作業性が悪いという欠点がある。また、接
着により得られた放射状の複合体の取り扱いが煩雑とな
り、その形状が複雑なため膜リーフの挿入作業も困難に
なり易いという欠点がある。However, although this method can easily prevent the displacement of the membrane leaf, it has a drawback that the workability in adhering the permeate flow path material to the hollow tube at equal intervals is poor. Further, there is a drawback that the radial composite obtained by adhesion becomes complicated to handle and the work of inserting the membrane leaf is likely to be difficult due to its complicated shape.
【０００８】そこで、本発明の目的は、膜や流路材のず
れを防止し易く、しかも流路材の固着の作業性が良好
で、膜や流路材の挿入作業も容易なスパイラル型膜エレ
メント、及びその製造方法を提供することにある。[0008] Therefore, an object of the present invention is to prevent the displacement of the membrane or the flow channel material, and also to improve the workability of fixing the flow channel material, and to insert the membrane or the flow channel material easily. An object is to provide an element and a manufacturing method thereof.
【０００９】[0009]
【課題を解決するための手段】上記目的は、下記の如き
本発明により達成できる。即ち、本発明のスパイラル型
膜エレメントは、対向する膜の供給側に供給側流路材を
介在させ、対向する膜の透過側に透過側流路材を介在さ
せた積層体を有孔の中空管にスパイラル状に巻回してあ
り、供給側流路と透過側流路とが直接連通しないための
封止構造を備えるスパイラル型膜エレメントにおいて、
前記透過側流路材又は前記供給側流路材の中心側端部
を、前記中空管に巻回した多孔シートに所定間隔で固着
してあることを特徴とする。The above object can be achieved by the present invention as described below. That is, the spiral wound type membrane element of the present invention has a laminated body in which a supply-side channel material is interposed on the supply side of the opposing membrane and a permeation-side channel material is interposed on the permeate side of the opposing membrane. In a spiral wound type membrane element, which is spirally wound around an empty tube, and has a sealing structure for the supply side flow passage and the permeation side flow passage not directly communicating with each other,
The end portion on the center side of the permeation-side channel material or the supply-side channel material is fixed to the perforated sheet wound around the hollow tube at predetermined intervals.
【００１０】一方、本発明のスパイラル型膜エレメント
の製造方法は、複数の透過側流路材又は供給側流路材の
一端部を多孔シートに所定間隔で固着する工程と、固着
された透過側流路材又は供給側流路材の間に膜及び他方
の流路材を挿入して、対向する膜の供給側に供給側流路
材を対向する膜の透過側に透過側流路材を介在させた積
層体を形成する工程と、この積層体及び前記多孔シート
を有孔の中空管に巻回する工程と、供給側流路と透過側
流路とが直接連通しないための封止構造を形成する工程
とを有することを特徴とする。ここで、封止構造を形成
する工程とは、膜同士、又は中空管と膜などの各部材間
の封止を行う工程を指し、この工程は複数に分けて行っ
てもよく、各工程は何れの段階で行ってもよい。On the other hand, the method for manufacturing a spiral wound type membrane element of the present invention comprises a step of fixing one end of a plurality of permeation side flow path members or supply side flow path materials to a porous sheet at a predetermined interval, and the fixed permeation side. Insert the membrane and the other flow channel material between the flow channel material or the supply side flow channel material, and place the supply side flow channel material on the supply side of the opposing membrane and the permeation side flow channel material on the permeate side of the opposing membrane. A step of forming an interposing laminated body, a step of winding the laminated body and the porous sheet around a perforated hollow tube, and sealing for preventing the supply side flow passage and the permeation side flow passage from directly communicating with each other. And a step of forming a structure. Here, the step of forming the sealing structure refers to a step of sealing the membranes, or between each member such as the hollow tube and the membrane, and this step may be performed in plural steps. May be performed at any stage.
【００１１】上記において、前記積層体及び前記多孔シ
ートを巻回するに先立って、前記多孔シートを部分的に
前記中空管に固着しておくことが好ましい。また、前記
膜及び他方の流路材を挿入する際に、交互に折り返した
連続膜を使用することが好ましい。In the above, it is preferable that the porous sheet is partially fixed to the hollow tube prior to winding the laminated body and the porous sheet. Further, when inserting the membrane and the other channel material, it is preferable to use a continuous membrane which is folded back alternately.
【００１２】［作用効果］本発明のスパイラル型膜エレ
メントによると、中空管に巻回した多孔シートに流路材
の中心側端部を所定間隔で固着した構造のため、予め多
孔シートに流路材を固着する際の作業性が良好となり、
膜や他方の流路材の挿入作業も容易となり、しかも膜や
流路材のずれが少ないものとなる。このため、有効膜面
積の減少による流量低下も起きにくく、封止構造の形成
不良による問題等も生じにくくなる。[Operation and Effect] According to the spiral wound type membrane element of the present invention, since the end portions on the center side of the flow path member are fixed to the perforated sheet wound around the hollow tube at predetermined intervals, the spiral type membrane element is flowed to the perforated sheet in advance. Improves workability when fixing road materials,
The work of inserting the membrane and the other channel material becomes easy, and the displacement of the membrane and the channel material is reduced. Therefore, a decrease in the flow rate due to a decrease in the effective film area is less likely to occur, and a problem due to defective formation of the sealing structure is less likely to occur.
【００１３】一方、本発明の製造方法によると、中空管
ではなく多孔シートに対して流路材の一端部を所定間隔
で固着するため、固着する際の作業性が良好で、固着後
の複合体の取り扱いも簡易になる。また、複合体の形状
が簡易なため膜等の挿入作業も容易になり、挿入後に多
孔シートを中空管に巻回することで、ずれを生じさせず
に容易に積層体をスパイラル状に巻回することができ
る。その結果、膜や流路材のずれを防止し易く、しかも
流路材の固着の作業性が良好で、膜や流路材の挿入作業
も容易な製造方法が提供できる。On the other hand, according to the manufacturing method of the present invention, since one end portion of the flow path member is fixed to the porous sheet instead of the hollow tube at a predetermined interval, workability at the time of fixing is good, and after the fixing. Handling of the complex is also simplified. Further, since the shape of the composite is simple, the work of inserting a membrane or the like can be facilitated. By winding the perforated sheet around the hollow tube after the insertion, the laminated body can be easily wound into a spiral shape without causing misalignment. Can be turned. As a result, it is possible to provide a manufacturing method in which it is easy to prevent displacement of the membrane or the flow path material, the workability of fixing the flow path material is good, and the work of inserting the membrane or the flow path material is easy.
【００１４】また、前記積層体及び前記多孔シートを巻
回するに先立って、前記多孔シートを部分的に前記中空
管に固着しておく場合、多孔シートと中空管とのずれが
生じないため、より簡易かつ確実に多孔シートを中空管
に巻回することができる。When the porous sheet is partially fixed to the hollow tube prior to winding the laminated body and the porous sheet, the porous sheet and the hollow tube are not displaced from each other. Therefore, the porous sheet can be wound around the hollow tube more easily and reliably.
【００１５】前記膜及び他方の流路材を挿入する際に、
交互に折り返した連続膜を使用する場合、連続膜にする
ことにより、外周側のシールが必要なくなり有効膜面積
が増加し、また工数や材料（接着剤）を低減できる。When inserting the membrane and the other channel material,
When a continuous film that is folded back alternately is used, by using a continuous film, sealing on the outer peripheral side is not required, the effective film area is increased, and man-hours and materials (adhesives) can be reduced.
【００１６】[0016]
【発明の実施の形態】以下、本発明の実施の形態につい
て、図面を参照しながら説明する。図１（ａ）〜図３
（ｂ）は、本発明のスパイラル型膜エレメントの製造方
法の一例を模式的に示す工程図である。まず、本発明の
製造方法について説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 (a) to 3
(B) is a process drawing which shows typically an example of the manufacturing method of the spiral type membrane element of this invention. First, the manufacturing method of the present invention will be described.
【００１７】本発明の製造方法は、図１（ａ）に示すよ
うに複数の透過側流路材４又は供給側流路材２の一端部
を多孔シート１０に所定間隔で固着する工程を有する。
本実施形態では、中空管５を透過側の流路（例えば集水
管）とすべく、透過側流路材４を多孔シート１０に固着
する例を示す。As shown in FIG. 1A, the manufacturing method of the present invention includes a step of fixing one end portions of a plurality of permeation side flow path members 4 or supply side flow path members 2 to the porous sheet 10 at predetermined intervals. .
In this embodiment, an example is shown in which the permeation-side channel member 4 is fixed to the porous sheet 10 so that the hollow tube 5 serves as a permeation-side channel (for example, a water collection tube).
【００１８】供給側流路材２としては、スパイラル型膜
エレメントとして従来公知の供給側流路材が何れも使用
でき、ネット、メッシュ、線材織物、繊維織物、不織
布、溝付きシート、波形シートなど何れでもよい。ま
た、その材質もポリプロピレン、ポリエチレン、ポリエ
チレンテレフタレート（ＰＥＴ）、ポリアミド等の樹脂
の他、天然高分子、ゴム、金属など何れでもよい。但
し、分離操作等の際に流路材からの溶出が問題となる場
合、それを考慮して材質を選択するのが好ましい。As the supply side flow path member 2, any conventionally known supply side flow path material as a spiral wound type membrane element can be used, such as net, mesh, wire woven fabric, fiber woven fabric, non-woven fabric, grooved sheet and corrugated sheet. Either may be used. Further, the material thereof may be a resin such as polypropylene, polyethylene, polyethylene terephthalate (PET), polyamide, etc., as well as a natural polymer, rubber or metal. However, when elution from the flow path material poses a problem during the separation operation or the like, it is preferable to select the material in consideration of it.
【００１９】供給側流路材２の厚みは０．３ｍｍ以上２
ｍｍ以下であることが好ましく、供給側流路材２の厚み
方向における空隙率は１０％以上９５％以下であること
が好ましい。また、供給側流路材２がネット状である場
合、そのピッチが０．５ｍｍ以上１０ｍｍ以下であるこ
とが好ましい。The thickness of the flow path member 2 on the supply side is 0.3 mm or more 2
It is preferable that the flow path member 2 has a porosity of 10% or more and 95% or less in the thickness direction. When the supply-side flow path member 2 has a net shape, its pitch is preferably 0.5 mm or more and 10 mm or less.
【００２０】透過側流路材４としては、スパイラル型膜
エレメントとして従来公知の透過側流路材が何れも使用
でき、ネット、メッシュ、線材織物、繊維織物、不織
布、溝付きシート、波形シートなど何れでもよい。ま
た、その材質もポリプロピレン、ポリエチレン、ポリエ
チレンテレフタレート（ＰＥＴ）、ポリアミド、エポキ
シ、ウレタン等の樹脂の他、天然高分子、ゴム、金属な
ど何れでもよい。但し、分離操作等の際に流路材からの
溶出が問題となる場合、それを考慮して材質を選択する
のが好ましい。As the permeation-side channel material 4, any permeation-side channel material conventionally known as a spiral wound type membrane element can be used, and a net, a mesh, a wire woven fabric, a fiber woven fabric, a non-woven fabric, a grooved sheet, a corrugated sheet, etc. Either may be used. Further, the material thereof may be any resin such as polypropylene, polyethylene, polyethylene terephthalate (PET), polyamide, epoxy, urethane, etc., as well as natural polymer, rubber or metal. However, when elution from the flow path material poses a problem during the separation operation or the like, it is preferable to select the material in consideration of it.
【００２１】透過側流路材４の厚みは０．１ｍｍ以上２
ｍｍ以下であることが好ましく、透過側流路材４の厚み
方向における空隙率は１０％以上８０％以下であること
が好ましい。また、透過側流路材４がネット状である場
合、そのピッチが０．３ｍｍ以上５ｍｍ以下であること
が好ましい。The thickness of the permeate side channel member 4 is 0.1 mm or more 2
It is preferably mm or less, and the porosity in the thickness direction of the permeation-side channel member 4 is preferably 10% or more and 80% or less. When the permeation-side flow path member 4 has a net shape, the pitch is preferably 0.3 mm or more and 5 mm or less.
【００２２】多孔シート１０としては、流体の透過があ
る程度生じるものであれば何れでもよく、透過側流路材
４のうち、この条件を満足するものが何れも使用でき
る。好ましい多孔シート１０の形態としては、ネット、
メッシュ、線材織物などが挙げられる。多孔シート１０
の開口率又は空孔率は１０〜８０％が好ましく、４０〜
８０％がより好ましい。また、流路材を多孔シート１０
に熱融着や超音波融着で固着する場合など、両者が同一
の材料又は融着性のある材料となるように選択するのが
好ましい。The perforated sheet 10 may be any one as long as it allows a fluid to permeate to some extent, and any of the permeation side flow path members 4 that satisfies this condition can be used. A preferable form of the porous sheet 10 is a net,
Examples include mesh and woven wire material. Perforated sheet 10
The aperture ratio or porosity of 10 to 80% is preferable,
80% is more preferable. In addition, the channel material is the porous sheet 10
In the case of fixing by heat fusion or ultrasonic fusion, it is preferable to select them so that they are the same material or a material having a fusion property.
【００２３】固着の方法としては、熱融着や超音波融着
の他、接着剤による接着、粘着テープ、熱融着材による
接着、縫合やステープル等による機械的な連結など何れ
でもよい。また、固着の際には、重ね代を設けてもよ
い。As the fixing method, in addition to heat fusion or ultrasonic fusion, any method such as adhesion with an adhesive, adhesion with a pressure sensitive adhesive tape or heat fusion material, and mechanical connection with sutures or staples may be used. In addition, an overlapping margin may be provided when fixing.
【００２４】固着の部位としては、少なくとも流路材の
一端部が固着されていればよいが、流路材の一辺（エレ
メントとしての中心側端辺）の略全長にわたって固着す
るのが、膜等のずれを確実に防止する上で好ましい。It is sufficient that at least one end portion of the flow path member is fixed as the fixing portion, but it is fixed over substantially the entire length of one side of the flow path member (end side on the center side as an element) such as a membrane. It is preferable for surely preventing the deviation.
【００２５】各々の流路材を多孔シート１０に固着する
際の間隔としては、等間隔でなくとも膜等の配置の仕方
で修正することができるが、略等間隔とするのが好まし
い。略等間隔とする場合、中空管５の外周長を固着する
流路材の数で除した間隔とするのが好ましい。The intervals at which the respective channel members are fixed to the porous sheet 10 can be modified by the way of arranging the membrane or the like, but it is preferable that the intervals be substantially equal. When the intervals are substantially equal, it is preferable that the outer peripheral length of the hollow tube 5 is divided by the number of flow path members to be fixed.
【００２６】上記のように、事前に多孔シート１０に流
路材を固着することにより、等間隔の融着等が非常に簡
易になり確実に出来るようになる。また、中空管５に透
過側流路材を直接超音波にて融着する手段が既に知られ
ているが、この方式だと高音による人体への影響や、透
過側流路材４と中空管５材質の相性による融着困難や、
中空管５の有孔部の融着不足及び円周上での融着が困難
であり等間隔にならない等の問題が発生していたが、こ
の点の問題も本方式で解決できる。As described above, by fixing the flow path material to the porous sheet 10 in advance, fusion at equal intervals can be made very simple and reliable. Also, a means for directly fusing the permeation-side channel material to the hollow tube 5 by ultrasonic waves is already known. With this method, however, the influence of the high sound on the human body and the permeation-side channel material 4 and the inside are eliminated. Difficult to fuse due to the compatibility of the material of the empty tube 5,
Although problems such as insufficient fusion of the perforated portion of the hollow tube 5 and difficulty in fusion bonding on the circumference and uneven spacing have occurred, this problem can also be solved by this method.
【００２７】本実施形態では、図１（ａ）に示すよう
に、多孔シート１０を部分的に中空管５に固着しておく
が、この工程は、多孔シート１０などを中空管５に巻回
するまでに行えばよい。例えば、流路材を多孔シート１
０に固着する前又は直後、あるいは多孔シート１０など
を中空管５に巻回する直前などである。なお、多孔シー
ト１０の固着工程は、多孔シート１０の滑りがない場合
など、必ずしも必要な工程ではない。In the present embodiment, as shown in FIG. 1A, the porous sheet 10 is partially fixed to the hollow tube 5, but in this step, the porous sheet 10 and the like are attached to the hollow tube 5. All you have to do is to wind it. For example, the channel material is used as the porous sheet 1.
Before or immediately after fixing to 0, or immediately before winding the porous sheet 10 or the like around the hollow tube 5. The step of fixing the porous sheet 10 is not always necessary, such as when the porous sheet 10 does not slip.
【００２８】中空管５としては、従来公知のものが何れ
も使用でき、例えば金属、繊維強化プラスチック、プラ
スチックまたはセラミックスなどからなる、有孔の中空
管であればよい。孔の形状、大きさ、位置、個数なども
膜種類などに応じて、従来公知のものがいずれも採用で
きる。As the hollow tube 5, any conventionally known tube can be used, for example, a hollow tube made of metal, fiber reinforced plastic, plastic, ceramics or the like and having a hole. As for the shape, size, position, number, etc. of the holes, any conventionally known one can be adopted depending on the type of the film.
【００２９】多孔シート１０を中空管５に固着する方法
としては、熱融着や超音波融着の他、接着剤による接
着、粘着テープ、両面テープ、熱融着材による接着、機
械的な固着など何れでもよい。固着の部位としては、少
なくとも多孔シート１０が部分的に固着されていればよ
いが、多孔シート１０の端辺の略全長にわたって固着す
るのが、巻回工程を良好に行う上で好ましい。As a method for fixing the porous sheet 10 to the hollow tube 5, in addition to heat fusion or ultrasonic fusion, adhesion with an adhesive, adhesive tape, double-sided tape, adhesion with a heat-bonding material, mechanical It may be fixed or otherwise. As a fixing portion, at least the porous sheet 10 may be partially fixed, but it is preferable to fix the porous sheet 10 over substantially the entire length of the end side of the porous sheet 10 in order to favorably perform the winding step.
【００３０】本発明の製造方法は、図１（ｂ）に示すよ
うに、多孔シート１０に固着された透過側流路材４又は
供給側流路材２の間に膜１及び他方の流路材を挿入し
て、対向する膜１の供給側に供給側流路材２を対向する
膜１の透過側に透過側流路材４を介在させた積層体Ｓ２
を形成する工程を含む。本実施形態では、膜１及び他方
の流路材である供給側流路材２を挿入する際に、交互に
折り返した連続膜を使用する例を示す。また、この実施
形態では、交互に折り返した連続膜の供給側に予め供給
側流路材２を介在させた積層物Ｓ１を準備しておく例を
示す。In the manufacturing method of the present invention, as shown in FIG. 1 (b), the membrane 1 and the other channel are provided between the permeation-side channel material 4 or the supply-side channel material 2 fixed to the porous sheet 10. A laminated body S2 in which a material is inserted, and a supply side channel material 2 is provided on the opposing supply side of the membrane 1 and a permeation side channel material 4 is interposed on the permeate side of the opposing membrane 1.
And forming. In the present embodiment, an example is shown in which a continuous membrane that is alternately folded back is used when inserting the membrane 1 and the supply-side channel material 2 that is the other channel material. Further, in this embodiment, an example is shown in which the laminate S1 in which the supply-side flow path member 2 is preliminarily provided on the supply side of the alternately folded back continuous film is prepared.
【００３１】本発明に用いられる膜は、透過に一定以上
の圧力損失を有する多孔質膜又は非多孔質膜であればよ
く、具体的には、精密濾過膜、限外濾過膜、ナノ濾過
膜、逆浸透膜、イオン交換膜、気体分離膜、透析膜、な
どが挙げられる。膜の材質としては、ポリプロピレン、
ポリエチレン等のポリオレフィン、ポリスルホン、ポリ
エーテルスルホン、ポリスチレン、ポリアクリロニトリ
ル、酢酸セルロース、ポリアミド、ポリイミド、フッ素
樹脂等の高分子膜を用いることができる。The membrane used in the present invention may be a porous membrane or a non-porous membrane having a pressure loss of a certain level or more in permeation, and specifically, microfiltration membrane, ultrafiltration membrane, nanofiltration membrane. , Reverse osmosis membranes, ion exchange membranes, gas separation membranes, dialysis membranes, and the like. The material of the film is polypropylene,
Polymer films such as polyolefin such as polyethylene, polysulfone, polyether sulfone, polystyrene, polyacrylonitrile, cellulose acetate, polyamide, polyimide, fluororesin, etc. can be used.
【００３２】前記のような積層物Ｓ１は、例えば図２
（ａ）〜図３（ｂ）に示す工程図のようにして作製する
ことができる。The laminate S1 as described above is shown in FIG.
It can be manufactured as in the process diagram shown in FIGS.
【００３３】まず、図２（ａ）に示すように、膜１の両
端のシール性を高めるために、連続膜である膜１の両端
を部分的に熱融着（緻密化）して融着部１ａを形成す
る。例えば、幅９００〜１０１６ｍｍの連続膜（具体的
には日東電工（株）製７５９ＨＲの９２４ｍｍ幅の膜な
ど）の場合、それをロールから繰り出しながら、両端か
ら３０ｍｍの領域のうち、３０ｍｍ以下の幅で熱融着
（ヒートシール、超音波ウェルダーなど）を連続的に行
う。図示した例では、両端から１０ｍｍ位置より内側に
幅５ｍｍの融着部１ａを設けている。First, as shown in FIG. 2A, in order to improve the sealing property of both ends of the film 1, both ends of the film 1 which is a continuous film are partially heat-bonded (densified) and then fused. The part 1a is formed. For example, in the case of a continuous film having a width of 900 to 1016 mm (specifically, a film having a width of 924 mm of 759HR manufactured by Nitto Denko Corporation, etc.), while unrolling it from a roll, a width of 30 mm or less in a region of 30 mm from both ends. To continuously perform heat fusion (heat sealing, ultrasonic welder, etc.). In the illustrated example, the fused portion 1a having a width of 5 mm is provided on the inner side from the positions of 10 mm from both ends.
【００３４】次に、図２（ｂ）に示すように、融着部１
ａの上の透過側に、両端から５〜３０ｍｍ幅の熱融着テ
ープ１１（例えば２０ｍｍ幅）を１０ｋＰａ以上の圧力
でシワが入らないように貼りつける。熱融着テープ１１
は、熱融着性の基材テープに粘着剤層を設けたもの等で
あり、粘着剤層を設けていないものでもよい。Next, as shown in FIG. 2B, the fused portion 1
A heat-sealing tape 11 (for example, 20 mm width) having a width of 5 to 30 mm from both ends is attached to the permeation side above a so that wrinkles do not occur at a pressure of 10 kPa or more. Heat fusion tape 11
Is, for example, a heat-fusible base tape provided with an adhesive layer, and may not be provided with an adhesive layer.
【００３５】次に、図２（ｃ）に示すように、供給側の
膜面に等間隔で、補強用の粘着テープ１２（例えば、日
東電工（株）製ＰＥＴテープＮｏ．３１Ｂ、５０ｍｍ
幅）の２０〜５０ｍｍ幅を、長さ方向に５００〜１５０
０ｍｍの等間隔（具体的には７５０ｍｍ）で幅方向にシ
ワの入らないように貼り付ける。これは連続で折りたた
んだときの山折り側、谷折り側になる部分である。Next, as shown in FIG. 2 (c), the reinforcing adhesive tape 12 (for example, PET tape No. 31B, 50 mm, manufactured by Nitto Denko Corporation) is provided at equal intervals on the film surface on the supply side.
Width) 20-50 mm width in the length direction 500-150
It is attached at equal intervals of 0 mm (specifically, 750 mm) so that there are no wrinkles in the width direction. This is the portion on the mountain fold side and the valley fold side when continuously folded.
【００３６】次に、図３（ａ）に示すように、幅９００
〜１０１６ｍｍ（具体的には９２４ｍｍ）のＰＰ製の供
給側流路材２を５００〜１５００ｍｍ（具体的には７５
０ｍｍ）に切断しておき、粘着テープ１２を貼り付けた
ところに交互に供給側流路材２を固定していく。固定方
法については、熱融着、ステープル、テープ、樹脂など
あるが超音波ウェルダーが好ましい。Next, as shown in FIG.
10-16 mm (specifically 924 mm) made of PP supply side flow path member 2 is 500-1500 mm (specifically 75 mm)
It is cut to 0 mm) and the supply side flow path material 2 is alternately fixed to the place where the adhesive tape 12 is attached. As a fixing method, there are heat fusion, staple, tape, resin and the like, but an ultrasonic welder is preferable.
【００３７】次に、図３（ｂ）に示すように、供給側流
路材２を固定した粘着テープ１２の部分のほぼ中央部分
を供給側流路材２が内側になるように折り曲げる。それ
を設定リーフ分（例えば３２リーフ）折り曲げて、積層
物Ｓ１とする。この時、供給側流路材２を取りつけてな
いほうは折り曲げていない状態となる。続いて、折目部
の強度アップのために４０〜１５０℃、１０〜５００ｋ
Ｐａのエアー圧力で熱プレスを１〜１２０秒間行うのが
好ましい。Next, as shown in FIG. 3 (b), the approximately central portion of the adhesive tape 12 to which the supply-side flow path member 2 is fixed is bent so that the supply-side flow path member 2 is on the inside. It is bent by a set leaf (for example, 32 leaves) to form a laminate S1. At this time, the one in which the supply-side flow path member 2 is not attached is in a non-bent state. Subsequently, 40-150 ° C, 10-500k for increasing the strength of the folds
It is preferable to perform hot pressing with an air pressure of Pa for 1 to 120 seconds.
【００３８】この積層物Ｓ１を、図１（ｂ）のように多
孔シート１０に固着された透過側流路材４の間に挿入す
るには、例えば各々の透過側流路材４とリーフとを、載
置面の両側から１枚づつ交互に重ねていけばよく、この
工程は自動化することも可能である。また、図３（ｂ）
に示すような折り曲げ工程を行う際に、透過側流路材４
を順次介在させていく方法も可能である。本発明ではこ
のように、積層物Ｓ１や流路材を固着した多孔シート１
０を予め準備しておくことにより、生産性の面でも非常
に効率がよくなる。To insert this laminate S1 between the permeation side flow path members 4 fixed to the porous sheet 10 as shown in FIG. 1 (b), for example, each permeation side flow path member 4 and leaves are formed. It suffices to alternately superpose them one by one from both sides of the mounting surface, and this process can be automated. In addition, FIG.
When performing the bending process as shown in FIG.
It is also possible to intervene in sequence. In the present invention, as described above, the porous sheet 1 to which the laminate S1 and the channel material are fixed
By preparing 0 in advance, the efficiency becomes very efficient in terms of productivity.
【００３９】図２〜図３で例示した工程に対応する中空
管５としては、例えば変性ポリフェニレンエーテル（Ｐ
ＰＥ）樹脂製φ３８ｍｍ、１０１６ｍｍの中空管が用い
られ、多孔シート１０としては、幅８００〜１０１６ｍ
ｍのＰＥＴ製の透過側流路材を５００〜２０００ｍｍ
（具体的には１７５０ｍｍ）に切断したものなどが使用
できる。透過側流路材４としては、５００〜１５００ｍ
ｍの透過側流路材が使用できる。As the hollow tube 5 corresponding to the steps illustrated in FIGS. 2 to 3, for example, modified polyphenylene ether (P
PE) A resin-made φ38 mm, 1016 mm hollow tube is used, and the porous sheet 10 has a width of 800 to 1016 m.
m permeation side flow path material made of PET is 500 to 2000 mm
Those specifically cut to 1750 mm can be used. As the permeation side flow path member 4, 500 to 1500 m
m channel material on the permeate side can be used.
【００４０】本実施形態では、図１（ｃ）に示すよう
に、積層物Ｓ１を挿入して積層体Ｓ２とした後に、供給
側流路と透過側流路とが直接連通しないための封止構造
を形成する工程を行う例を示す。この例では、前記の熱
融着テープ１１を利用して、対向する膜１の透過側に透
過側流路材４を介在させた状態で膜１の両端部を封止す
ると共に、膜１の両端部と多孔シート１０との近接部を
封止する。各々の封止により両端封止部Ａ１と内周封止
部Ａ２とが形成される。その際、膜１の両端部を順次リ
ーフ数の分だけ封止していき、その封止後に多孔シート
１０との近接部を封止してもよい。In this embodiment, as shown in FIG. 1 (c), after the laminated body S1 is inserted to form the laminated body S2, sealing is performed so that the supply-side flow passage and the permeation-side flow passage do not directly communicate with each other. An example of performing a step of forming a structure will be shown. In this example, the heat-sealing tape 11 is used to seal both ends of the membrane 1 with the permeation side flow path member 4 interposed between the membrane 1 and the permeation side of the membrane 1. The both ends and the vicinity of the porous sheet 10 are sealed. Each sealing forms a both-ends sealing part A1 and an inner circumference sealing part A2. At that time, both ends of the membrane 1 may be sequentially sealed by the number of leaves, and after the sealing, a portion close to the porous sheet 10 may be sealed.
【００４１】本発明では、多孔シート１０等を中空管５
に巻回した後に更に、多孔シート１０と中空管５との境
界面やその周辺を、接着剤や封止用樹脂等を用いて更に
封止してもよい。また、連続膜を使用せずに、複数のリ
ーフを使用する場合にも、膜１の外側端辺が封止され
る。In the present invention, the porous sheet 10 and the like are connected to the hollow tube 5.
After winding, the boundary surface between the porous sheet 10 and the hollow tube 5 and its periphery may be further sealed with an adhesive, a sealing resin or the like. Further, even when a plurality of leaves are used without using the continuous membrane, the outer side edge of the membrane 1 is sealed.
【００４２】当該封止の方法については、熱融着テープ
１１を用いた熱融着や超音波融着の他、接着剤による接
着、粘着テープ、両面テープ、熱融着材による接着など
何れでもよい。Regarding the sealing method, in addition to heat fusion using the heat fusion tape 11 and ultrasonic fusion, adhesion with an adhesive, adhesive tape, double-sided tape, adhesion with a heat fusion material, etc. may be used. Good.
【００４３】本発明の製造方法は、図１（ｄ）に示すよ
うに、積層体Ｓ２及び多孔シート１０を有孔の中空管５
に巻回する工程を有する。本実施形態では、積層体Ｓ２
及び多孔シート１０を同時に巻回する例を示したが、予
め多孔シート１０を巻回してから、積層体Ｓ２を巻回し
てもよい。In the production method of the present invention, as shown in FIG. 1 (d), the laminated body S2 and the porous sheet 10 are provided with a hollow tube 5 having a hole.
It has a step of winding. In the present embodiment, the laminated body S2
Although the example in which the porous sheet 10 and the porous sheet 10 are wound at the same time is shown, the porous sheet 10 may be wound in advance and then the laminated body S2 may be wound.
【００４４】巻回は、巻付用のチャックに中空管５をセ
ットし、このチャックをある一定の速度とテンションで
巻き上げればよい。また、ある一定の速度で巻き上げた
後にロールにて荷重方式にて巻き上げる方式で行うこと
も可能である。For winding, the hollow tube 5 may be set on a winding chuck, and the chuck may be wound at a constant speed and tension. It is also possible to wind the roll at a certain speed and then roll the roll by a load system.
【００４５】巻回の後に、熱融着等した封止部分の残留
応力を除去するために、適当な温度で熱処理したり、あ
るいは前記巻回工程を熱融着等が離反しない温度で加熱
等しながら行ってもよい。また、巻回工程の後に、膜１
の外周面にネット等の外周部流路材を巻回してもよく、
外周面の封止、粘着テープの巻回などを行ってもよい。After the winding, heat treatment is performed at an appropriate temperature to remove residual stress in the sealed portion that is heat-sealed, or the winding step is heated at a temperature at which heat-sealing does not separate. You may go while. Also, after the winding step, the film 1
An outer peripheral flow path material such as a net may be wound around the outer peripheral surface of the
You may perform sealing of an outer peripheral surface, winding of an adhesive tape, etc.
【００４６】一方、本発明のスパイラル型膜エレメント
は、以上のような製造方法によって好適に製造し得るも
のである。即ち、本発明のスパイラル型膜エレメント
は、図４に示すように、対向する膜１の供給側に供給側
流路材２を介在させ、対向する膜１の透過側に透過側流
路材４を介在させた積層体を有孔の中空管５にスパイラ
ル状に巻回してあり、供給側流路と透過側流路とが直接
連通しないための封止構造を備え、透過側流路材４又は
供給側流路材２の中心側端部を、中空管５に巻回した多
孔シート１０に所定間隔で固着してある。On the other hand, the spiral wound type membrane element of the present invention can be suitably manufactured by the above manufacturing method. That is, in the spiral wound type membrane element of the present invention, as shown in FIG. 4, the supply-side channel material 2 is interposed between the opposing membranes 1 on the supply side, and the permeation-side channel material 4 is disposed on the permeate side of the opposing membrane 1. The laminated body with the interposing member is spirally wound around the perforated hollow tube 5 and is provided with a sealing structure for preventing direct communication between the supply-side flow passage and the permeation-side flow passage. 4 or the center side end of the supply side flow path member 2 is fixed to the porous sheet 10 wound around the hollow tube 5 at a predetermined interval.
【００４７】膜１、供給側流路材２、透過側流路材４、
中空管５、多孔シート１０及びそれらの結合関係、並び
に封止構造については、先に述べた通りである。なお、
本発明のスパイラル型膜エレメントは、モジュール化さ
れた後又は直接に分離装置等に組み込まれ、前述した膜
の種類に応じた用途に使用することができる。Membrane 1, supply-side channel material 2, permeate-side channel material 4,
The hollow tube 5, the porous sheet 10, their bonding relationship, and the sealing structure are as described above. In addition,
The spiral wound type membrane element of the present invention can be used after being modularized or directly incorporated into a separation device or the like, and can be used for the purpose depending on the type of the above-mentioned membrane.
【００４８】［他の実施形態］
（１）前述の実施形態では、中空管を透過側の流路とす
べく、透過側流路材を多孔シートに固着する例を示した
が、濃度分極によるケークの形成等が問題とならない場
合など、中空管を供給側の流路とすべく、供給側流路材
を多孔シートに固着してもよい。[Other Embodiments] (1) In the above-described embodiment, an example is shown in which the permeation-side channel material is fixed to the porous sheet so that the hollow tube serves as the permeation-side channel. When the formation of a cake due to the above does not pose a problem, the supply-side channel material may be fixed to the porous sheet so that the hollow tube serves as the supply-side channel.
【００４９】（２）前述の実施形態では、交互に折り返
した連続膜の供給側に予め供給側流路材を介在させた積
層物を準備しておき、これを透過側流路材の間に挿入す
る例を示したが、まず連続膜を透過側流路材の間に挿入
した後、続いて連続膜の間に供給側流路材を挿入しても
よい。(2) In the above-described embodiment, a laminate having a supply-side channel material interposed in advance on the supply side of the alternately folded back continuous film is prepared and placed between the permeation-side channel materials. Although the example of insertion is shown, first, the continuous membrane may be inserted between the permeation side channel materials, and then the supply side channel material may be inserted between the continuous membranes.
【００５０】（３）前述の実施形態では、膜の両端封止
部と内周封止部とを形成（封止）した後に、多孔シート
等を中空管に巻回する例を示したが、多孔シート等を中
空管に巻回した後に又は巻回しながら、膜の両端部を順
次リーフ数の分だけ封止していき、その封止後に多孔シ
ートとの近接部を封止するなどしてもよい。(3) In the above embodiment, an example was shown in which the porous sheet and the like were wound around the hollow tube after forming (sealing) the both-end sealing portion and the inner peripheral sealing portion of the membrane. After or while winding the porous sheet or the like around the hollow tube, the both ends of the membrane are sequentially sealed by the number of leaves, and after the sealing, the vicinity of the porous sheet is sealed. You may.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明のスパイラル型膜エレメントの製造方法
の一例を模式的に示す工程図FIG. 1 is a process chart schematically showing an example of a method for producing a spiral wound type membrane element of the present invention.
【図２】図１に示す工程の一部を更に詳細に示す工程図FIG. 2 is a process diagram showing in more detail a part of the process shown in FIG.
【図３】図１に示す工程の一部を更に詳細に示す工程図FIG. 3 is a process chart showing in more detail a part of the process shown in FIG.
【図４】本発明のスパイラル型膜エレメントの一例を示
す部分破断した側面図FIG. 4 is a partially cutaway side view showing an example of the spiral wound type membrane element of the present invention.
【図５】従来のスパイラル型膜エレメントの製造方法の
一例を模式的に示す工程図FIG. 5 is a process chart schematically showing an example of a conventional method for manufacturing a spiral wound type membrane element.
【符号の説明】 １ 膜 ２ 供給側流路材 ４ 透過側流路材 ５ 中空管 １０ 多孔シート Ａ１ 両端封止部（封止構造） Ａ２ 内周封止部（封止構造） Ｓ１ 積層物 Ｓ２ 積層体[Explanation of symbols] 1 membrane 2 Flow path side material 4 Permeation side flow path material 5 hollow tubes 10 Perforated sheet A1 Both ends sealing part (sealing structure) A2 Inner circumference sealing part (sealing structure) S1 laminate S2 laminate
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4D006 GA02 GA03 GA06 GA07 GA13 GA32 HA61 HA62 JA05A JA05C JA06A JA06C JB04 JB05 JB07 MA12 MC18 MC22 MC23 MC28 MC35 MC39 MC45 MC54 MC62 PB70 PC80 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 4D006 GA02 GA03 GA06 GA07 GA13 GA32 HA61 HA62 JA05A JA05C JA06A JA06C JB04 JB05 JB07 MA12 MC18 MC22 MC23 MC28 MC35 MC39 MC45 MC54 MC62 PB70 PC80
Claims (4)
在させ、対向する膜の透過側に透過側流路材を介在させ
た積層体を有孔の中空管にスパイラル状に巻回してあ
り、供給側流路と透過側流路とが直接連通しないための
封止構造を備えるスパイラル型膜エレメントにおいて、
前記透過側流路材又は前記供給側流路材の中心側端部
を、前記中空管に巻回した多孔シートに所定間隔で固着
してあることを特徴とするスパイラル型膜エレメント。1. A laminated body in which a supply-side channel material is interposed on the supply side of opposed membranes and a permeation-side channel material is interposed on the permeation side of opposed membranes in a spiral shape in a hollow tube having a hole. In a spiral wound type membrane element having a sealing structure that is wound and the supply side flow passage and the permeation side flow passage do not directly communicate with each other,
A spiral wound type membrane element, characterized in that a center side end of the permeation-side channel material or the supply-side channel material is fixed to a perforated sheet wound around the hollow tube at predetermined intervals.
一端部を多孔シートに所定間隔で固着する工程と、固着
された透過側流路材又は供給側流路材の間に膜及び他方
の流路材を挿入して、対向する膜の供給側に供給側流路
材を対向する膜の透過側に透過側流路材を介在させた積
層体を形成する工程と、この積層体及び前記多孔シート
を有孔の中空管に巻回する工程と、供給側流路と透過側
流路とが直接連通しないための封止構造を形成する工程
とを有するスパイラル型膜エレメントの製造方法。2. A step of fixing one end portions of a plurality of permeation-side flow path members or supply-side flow path members to a porous sheet at predetermined intervals, and between the fixed permeation-side flow path members or supply-side flow path members. A step of inserting the membrane and the other channel material to form a laminate in which the supply side channel material is provided on the supply side of the opposing membrane, and the permeation side channel material is interposed on the permeate side of the opposing membrane; and A spiral wound type membrane element having a step of winding the laminate and the porous sheet around a perforated hollow tube, and a step of forming a sealing structure for preventing direct communication between the supply side flow passage and the permeation side flow passage. Manufacturing method.
るに先立って、前記多孔シートを部分的に前記中空管に
固着しておく請求項２記載のスパイラル型膜エレメント
の製造方法。3. The method for producing a spiral wound type membrane element according to claim 2, wherein the porous sheet is partially fixed to the hollow tube prior to winding the laminate and the porous sheet.
に、交互に折り返した連続膜を使用する請求項２又は３
に記載のスパイラル型膜エレメントの製造方法。4. A continuous membrane that is folded back alternately when inserting the membrane and the other channel material.
The method for producing a spiral wound type membrane element according to 1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002080461A JP2003275547A (en) | 2002-03-22 | 2002-03-22 | Spiral type membrane element and manufacturing method therefor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002080461A JP2003275547A (en) | 2002-03-22 | 2002-03-22 | Spiral type membrane element and manufacturing method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003275547A true JP2003275547A (en) | 2003-09-30 |
Family
ID=29206427
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002080461A Pending JP2003275547A (en) | 2002-03-22 | 2002-03-22 | Spiral type membrane element and manufacturing method therefor |
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| Country | Link |
|---|---|
| JP (1) | JP2003275547A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014208602A1 (en) * | 2013-06-28 | 2014-12-31 | 東レ株式会社 | Separation membrane element |
-
2002
- 2002-03-22 JP JP2002080461A patent/JP2003275547A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014208602A1 (en) * | 2013-06-28 | 2014-12-31 | 東レ株式会社 | Separation membrane element |
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