JP2000319599A - Peeling method and peelable laminated material - Google Patents
Peeling method and peelable laminated materialInfo
- Publication number
- JP2000319599A JP2000319599A JP11134275A JP13427599A JP2000319599A JP 2000319599 A JP2000319599 A JP 2000319599A JP 11134275 A JP11134275 A JP 11134275A JP 13427599 A JP13427599 A JP 13427599A JP 2000319599 A JP2000319599 A JP 2000319599A
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- composition layer
- electrode
- conductive composition
- laminated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、積層接合体を任意
の時に容易に層間剥離することを可能とする剥離方法、
並びに該剥離方法に用いられる剥離性シートに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a peeling method which makes it possible to easily delaminate a laminated joint at any time.
The present invention also relates to a release sheet used in the release method.
【０００２】[0002]
【従来の技術】接着後に接着テープを容易に剥離する方
法が、特開平３−６４３８１号公報に開示されている。
すなわち、合成樹脂フィルムよりなる基材表面に接着剤
層を設けてなる接着テープでは、貼付作業は容易である
ものの、不要となった後の剥離作業が困難である。そこ
で、上記先行技術に記載の剥離方法では、熱収縮性基材
の表面に発泡剤含有接着剤層が設けられた接着テープが
用いられている。2. Description of the Related Art A method for easily peeling an adhesive tape after bonding is disclosed in Japanese Patent Application Laid-Open No. 3-64381.
That is, with an adhesive tape in which an adhesive layer is provided on the surface of a substrate made of a synthetic resin film, the attaching operation is easy, but the peeling operation after it becomes unnecessary is difficult. Therefore, in the peeling method described in the prior art, an adhesive tape having a foaming agent-containing adhesive layer provided on the surface of a heat-shrinkable substrate is used.
【０００３】すなわち、上記接着テープを被着体に貼付
した後、剥離に際し接着テープを加熱する。加熱によ
り、熱収縮性基材が熱収縮し、かつ発泡剤含有接着剤層
が発泡し、それによって被着体から接着テープが容易に
剥離することができるとされている。[0003] That is, after the above-mentioned adhesive tape is attached to an adherend, the adhesive tape is heated for peeling. It is stated that the heating causes the heat-shrinkable substrate to thermally shrink and the foaming agent-containing adhesive layer to foam, whereby the adhesive tape can be easily peeled from the adherend.
【０００４】[0004]
【発明が解決しようとする課題】上記先行技術によれ
ば、剥離したい時に加熱するだけで、被着体から接着テ
ープを容易に剥離し得る。According to the above prior art, the adhesive tape can be easily peeled from the adherend only by heating when it is desired to peel it.
【０００５】しかしながら、上記接着テープでは、被着
体に接着剤層の一部が残存する、いわゆる糊残りが生じ
がちであった。従って、被着体を再利用するには、付着
している接着剤を除去しなければならず、煩雑な作業が
強いられていた。また、剥離に際し加熱する必要がある
が、壁材のような大きな面積の被着体に大きな面積で接
着テープが貼付されている場合、このような大面積の接
着テープを均一にかつ簡易に加熱することは困難であっ
た。However, with the above-mentioned adhesive tape, a so-called adhesive residue tends to occur, in which a part of the adhesive layer remains on the adherend. Therefore, in order to reuse the adherend, the adhered adhesive must be removed, and a complicated operation has been required. In addition, it is necessary to heat at the time of peeling, but when the adhesive tape is applied over a large area of an adherend such as a wall material, the adhesive tape having such a large area is uniformly and easily heated. It was difficult to do.
【０００６】本発明の目的は、上述した先行技術の欠点
を解消し、剥離時に糊残りが生じ難く、被着体を容易に
再利用でき、かつ大きな面積で接合されている場合であ
っても容易に剥離することができる剥離方法、並びに該
剥離方法に用いられる剥離性シートを提供することにあ
る。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned disadvantages of the prior art, to prevent adhesive residue when peeling off, to easily reuse an adherend, and to join even a large area. An object of the present invention is to provide a peeling method that can be easily peeled, and a peelable sheet used in the peeling method.
【０００７】[0007]
【課題を解決するための手段】本願発明者らは、上記課
題を達成すべく鋭意検討した結果、陽極酸化を利用し、
陽極酸化された電極と該電極に接触している導電性組成
物層との界面で剥離すれば、糊残り等を生じさせること
なく容易に層間剥離し得ることを見出し、本発明をなす
に至った。Means for Solving the Problems The inventors of the present application have made intensive studies to achieve the above object, and as a result, have utilized anodic oxidation.
The present inventors have found that if the electrode is peeled off at the interface between the anodized electrode and the conductive composition layer in contact with the electrode, the layer can be easily peeled off without causing adhesive residue or the like, and the present invention has been accomplished. Was.
【０００８】すなわち、本願の第１の発明は、第１，第
２の電極間に導電性組成物層が挟まれている構造を少な
くとも有する積層接合体を層間剥離する方法であって、
第１，第２の電極間に電圧を印加し、陽極側の電極を陽
極酸化し、該電極と導電性組成物層との間の界面で剥離
することを特徴とする。That is, the first invention of the present application is a method for delaminating a laminated joined body having at least a structure in which a conductive composition layer is sandwiched between first and second electrodes,
A voltage is applied between the first and second electrodes to anodize the electrode on the anode side and peel off at the interface between the electrode and the conductive composition layer.
【０００９】第１の発明では、積層接合体が層間剥離さ
れるが、この積層接合体としては、第１，第２の電極間
に導電性組成物層が挟まれている構造を少なくとも有す
るものが用いられる。そして、第１，第２の電極間に電
圧を印加し、陽極側の電極を陽極酸化することにより、
陽極側の電極を構成している金属が酸化される。そのた
め、該電極に接触している導電性組成物層に酸化された
金属イオンが拡散し、陽極を構成している金属が脆弱に
なったり、あるいは消失する。従って、陽極側の電極と
導電性組成物層との接着強度が低下するので、上記積層
接合体において、陽極側の電極と導電性組成物層との間
の界面で、糊残りを生じさせることなく容易に剥離する
ことができる。In the first invention, the laminated joined body is delaminated. The laminated joined body has at least a structure in which the conductive composition layer is sandwiched between the first and second electrodes. Is used. Then, by applying a voltage between the first and second electrodes and anodizing the electrode on the anode side,
The metal constituting the anode-side electrode is oxidized. Therefore, the oxidized metal ions diffuse into the conductive composition layer in contact with the electrode, and the metal constituting the anode becomes weak or disappears. Therefore, since the adhesive strength between the anode-side electrode and the conductive composition layer is reduced, adhesive residue may be generated at the interface between the anode-side electrode and the conductive composition layer in the laminated joint. And can be easily peeled off.
【００１０】本願の第２の発明は、第１の発明に係る剥
離方法に用いられる剥離性シートであって、第１，第２
の電極と、第１，第２の電極間に挟まれた導電性組成物
層とを備えることを特徴とする。[0010] A second invention of the present application is a peelable sheet used in the peeling method according to the first invention.
, And a conductive composition layer sandwiched between the first and second electrodes.
【００１１】また、好ましくは、第１，第２の電極が複
数の金属膜を積層した構造を有する。この場合、より好
ましくは、複数の金属膜のうち、導電性組成物層との界
面側に積層されている金属膜が、他の金属膜よりも標準
電極電位が低い金属により構成される。[0011] Preferably, the first and second electrodes have a structure in which a plurality of metal films are laminated. In this case, more preferably, of the plurality of metal films, the metal film stacked on the interface side with the conductive composition layer is made of a metal having a standard electrode potential lower than that of the other metal films.
【００１２】以下、本発明の詳細を説明する。本発明に
おいて、上記第１，第２の電極とは、電圧印加時に電気
をよく伝導する物質からなり、通常、金属により構成さ
れる。上記第１，第２の電極を構成する金属としては、
特に限定されるわけではないが、陽極酸化を促進するに
は、陽極側の電極を構成する金属として、イオン化傾向
が大きい、すなわち標準電極電位が低い金属が好適に用
いられる。もっとも、イオン化傾向が大き過ぎると、反
応活性により自動的に酸化反応が進行し、経時により陽
極側電極と導電性組成物層との間の接合強度が低下し、
接合の信頼性が低くなる。Hereinafter, the present invention will be described in detail. In the present invention, the first and second electrodes are made of a substance that conducts electricity well when a voltage is applied, and are usually made of metal. As the metal constituting the first and second electrodes,
Although not particularly limited, in order to promote anodic oxidation, a metal having a high ionization tendency, that is, a metal having a low standard electrode potential is suitably used as a metal constituting the anode-side electrode. However, if the ionization tendency is too large, the oxidation reaction automatically proceeds by the reaction activity, and the bonding strength between the anode-side electrode and the conductive composition layer decreases over time,
The reliability of the joint is reduced.
【００１３】本発明において、好適に用いられる陽極側
電極を構成する金属の例としては、Ａｌ、Ｚｎ、Ｆｅ、
Ｎｉ、Ｓｎ、Ｐｂ、Ｃｒなどを挙げることができる。な
お、陰極側の電極を構成する金属については、陽極側の
電極を構成する金属と同じであることが好ましい。なぜ
ならば、標準電極電位の異なる電極を導電性組成物層で
接触した場合、電極間に電位が発生し、標準電極電位の
低い金属が酸化され腐食が進行することがある。In the present invention, Al, Zn, Fe, Al, Zn, Fe
Examples thereof include Ni, Sn, Pb, and Cr. The metal constituting the electrode on the cathode side is preferably the same as the metal constituting the electrode on the anode side. This is because, when electrodes having different standard electrode potentials are brought into contact with the conductive composition layer, a potential is generated between the electrodes, and a metal having a low standard electrode potential is oxidized and corrosion may progress.
【００１４】また、電極と導電性組成物層とが界面で確
実に剥離されるには、電極の大きさは、電極を介して接
合されている電極背面側の層と、導電性組成物層との接
合面積と等しいか、あるいは該接合面積よりも大きいこ
とが必要である。In order to ensure that the electrode and the conductive composition layer are peeled off at the interface, the size of the electrode is determined by the size of the layer on the back side of the electrode joined via the electrode and the conductive composition layer. Must be equal to or larger than the bonding area.
【００１５】本発明においては、上記積層接合体とは、
第１，第２の電極間に導電性組成物層が挟まれている構
造を少なくとも有し、第１，第２の電極のうち、陽極側
の電極と、導電性組成物層との間の界面で剥離が行われ
る。従って、本発明における上記積層接合体としては、
接合される部材間に、第１の発明に係る剥離性シートが
介在されており、該剥離性シートを介して接合されるべ
き部材間が接合されている構造体であってもよく、ある
いは、第１，第２の電極が接合されるべき部材自体であ
ってもよい。In the present invention, the laminated joint is
At least a structure in which the conductive composition layer is sandwiched between the first and second electrodes, and among the first and second electrodes, the anode-side electrode and the conductive composition layer Peeling occurs at the interface. Therefore, as the laminated joint in the present invention,
A structure in which the peelable sheet according to the first invention is interposed between the members to be joined, and the members to be joined via the peelable sheet may be joined, or The member to which the first and second electrodes are to be joined may be used.
【００１６】上記のような積層接合体の構造例を、図１
〜図４に示す。図１に示す積層接合体では、第１，第２
の電極２，３間に導電性組成物層４が挟まれている剥離
性シート５が、被着体１，１間に配置されている。ま
た、図１に示す積層接合体では、第１，第２の電極２，
３の外側面が接着剤層６，７を介して被着体１，１に接
合されている。FIG. 1 shows an example of the structure of the above-described laminated joint.
4 to FIG. In the laminated joined body shown in FIG.
The peelable sheet 5 in which the conductive composition layer 4 is sandwiched between the electrodes 2 and 3 is disposed between the adherends 1 and 1. Further, in the laminated joined body shown in FIG.
The outside surface of 3 is bonded to the adherends 1 and 1 via the adhesive layers 6 and 7.
【００１７】図２に示す積層接合体では、図１に示す構
造に、さらに、第１，第２の電極２，３を支持する基材
８，９が積層されている。すなわち、基材８，９の１面
に電極２，３がそれぞれ形成されており、該基材８，９
に支持された電極２，３が、電極２，３が導電性組成物
層４側を向くように積層されている。In the laminated joint shown in FIG. 2, substrates 8 and 9 for supporting the first and second electrodes 2 and 3 are further laminated on the structure shown in FIG. That is, the electrodes 2 and 3 are formed on one surface of the substrates 8 and 9, respectively.
Are laminated such that the electrodes 2 and 3 face the conductive composition layer 4 side.
【００１８】図３に示す積層接合体では、被着体が金属
であり、被着体が第１，第２の電極をも兼ねている。す
なわち、金属からなる被着体１０，１０間に導電性組成
物層１１が積層されている。このように、本発明に係る
剥離方法では、積層接合体において、導電性組成物層の
両側に積層される被着体が第１，第２の電極をそれぞれ
兼ねていてもよい。In the laminated joint shown in FIG. 3, the adherend is a metal, and the adherend also serves as the first and second electrodes. That is, the conductive composition layer 11 is laminated between the adherends 10 made of metal. Thus, in the peeling method according to the present invention, the adherends laminated on both sides of the conductive composition layer in the laminated joined body may also serve as the first and second electrodes.
【００１９】本発明に係る剥離方法では、上記第１，第
２の電極に電圧を印加し、陽極側の電極、例えば電極２
を陽極酸化し、電極２と導電性組成物層との間の界面で
剥離する。すなわち、図１に示す積層接合体を例にとる
と、図４に示すように電極２，３間に直流電源を接続
し、電極２を陽極側とすることにより、上記のように電
極２を陽極酸化することができる。In the stripping method according to the present invention, a voltage is applied to the first and second electrodes, and an electrode on the anode side, for example, the electrode 2
Is anodized and peeled off at the interface between the electrode 2 and the conductive composition layer. That is, taking the laminated joined body shown in FIG. 1 as an example, a DC power source is connected between the electrodes 2 and 3 as shown in FIG. Can be anodized.
【００２０】なお、本発明において、上記第１，第２の
電極については、図１〜図３に示した各積層接合体の構
造例から明らかなように、導電性組成物層４の表面に金
属膜を形成することにより形成されてもよく、基材の片
面に金属膜を形成することにより形成されてもよく、あ
るいは金属からなる被着体の場合には、被着体自体を第
１，第２の電極としてもよい。In the present invention, the first and second electrodes are provided on the surface of the conductive composition layer 4 as is clear from the structural examples of the respective laminated joined bodies shown in FIGS. It may be formed by forming a metal film, may be formed by forming a metal film on one surface of a base material, or, in the case of an adherend made of metal, the adherend itself may be formed of the first material. , A second electrode.
【００２１】もっとも、図２に示したように、基材８，
９の片面に金属膜を形成して電極を構成する場合には、
可撓性を有する方が好ましい。従って、上記基材として
は、可撓性を有する合成樹脂フィルムを用いることが望
ましく、金属膜についても金属薄膜が好ましい。金属薄
膜については、基材上に直接蒸着、スパッタリングなど
の薄膜形成法により形成することができる。もっとも、
金属膜については金属箔などを用いて構成してもよい。However, as shown in FIG.
9 to form an electrode by forming a metal film on one surface,
It is preferable to have flexibility. Therefore, it is desirable to use a synthetic resin film having flexibility as the base material, and the metal film is also preferably a metal thin film. The metal thin film can be formed directly on the substrate by a thin film forming method such as vapor deposition or sputtering. However,
The metal film may be configured using a metal foil or the like.
【００２２】さらに、本発明に係る剥離性シートでは、
上記第１，第２の電極は複数の金属膜を積層した構造を
有するものであってもよい。複数の金属膜を積層する場
合、導電性組成物との界面側に積層される金属膜をイオ
ン化傾向が大きい、すなわち標準電極電位が低い金属に
より構成することが好ましい。Further, in the peelable sheet according to the present invention,
The first and second electrodes may have a structure in which a plurality of metal films are stacked. When a plurality of metal films are stacked, it is preferable that the metal film stacked on the interface side with the conductive composition be formed of a metal having a high ionization tendency, that is, a metal having a low standard electrode potential.
【００２３】すなわち、図５に示すように、電極２が単
一の金属膜により構成されている場合、陽極酸化が進行
すると、電極２の一部が消失したりし、電極２にさらに
電圧を印加することができない場合がある。これに対し
て、図６に示すように、陽極側の電極２が、導電性組成
物層４の片面に金属膜２ａ，２ｂをこの順序で積層する
ことにより構成されており、導電性組成物層４に接して
いる金属膜２ａの標準電極電位が金属膜２ｂの標準電極
電位よりも低い場合には、このような問題を解消するこ
とができる。すなわち、図６に示されているように、陽
極酸化が進行し、金属膜２ａが部分的に消失したとして
も、金属膜２ｂが残存するので、電極２，３間に電圧を
印加し続けることができる。That is, as shown in FIG. 5, when the electrode 2 is composed of a single metal film, a part of the electrode 2 disappears or the voltage is further applied to the electrode 2 as the anodic oxidation proceeds. It may not be possible to apply. On the other hand, as shown in FIG. 6, the electrode 2 on the anode side is formed by laminating the metal films 2a and 2b on one surface of the conductive composition layer 4 in this order. Such a problem can be solved when the standard electrode potential of the metal film 2a in contact with the layer 4 is lower than the standard electrode potential of the metal film 2b. That is, as shown in FIG. 6, even if the anodic oxidation proceeds and the metal film 2a partially disappears, the metal film 2b remains, so that the voltage is continuously applied between the electrodes 2 and 3. Can be.
【００２４】上記導電性組成物層としては、電極２，３
間に電圧を印加した際に、一方の電極を陽極酸化し得る
ように電流を流しえる適宜の組成物を用いることがで
き、高分子電解質が好適に用いられる。As the conductive composition layer, electrodes 2, 3
When a voltage is applied between the electrodes, an appropriate composition capable of supplying a current so that one electrode can be anodized can be used, and a polymer electrolyte is suitably used.
【００２５】上記高分子電解質自体に、接着力あるいは
粘着力を持たせ、それによって第１，第２の電極と導電
性組成物層とを直接接合することが望ましい。このよう
な接着力もしくは粘着力を有する高分子電解質として
は、アクリル酸、メタクリル酸、イタコン酸、スルフォ
ン酸基含有モノマー、ポリアミノ酸などの重合体の塩も
しくは他のモノマーとの共重合体の塩など、いわゆる高
分子電解質と称されているものを広く用いることができ
る。また、これらの重合体塩や共重合体塩に限定され
ず、導電性粒子、例えば金属粒子、カーボンブラック、
ポリアニリンなどを分散させてなる高分子組成物も用い
ることができる。It is desirable that the polymer electrolyte itself be provided with an adhesive force or an adhesive force, thereby directly joining the first and second electrodes and the conductive composition layer. Examples of the polymer electrolyte having such adhesive or cohesive strength include salts of a polymer such as acrylic acid, methacrylic acid, itaconic acid, a monomer containing a sulfonic acid group, a polyamino acid or a salt of a copolymer with another monomer. For example, a so-called polymer electrolyte can be widely used. Further, the conductive particles are not limited to these polymer salts and copolymer salts, and conductive particles such as metal particles, carbon black,
A polymer composition in which polyaniline or the like is dispersed can also be used.
【００２６】さらに、上記導電性組成物層を形成する場
合に、上記導電性組成物をシート化する方法についても
特に限定されず、通常のシート成形方法や、支持体上に
おいて導電性組成物を塗工し、乾燥させる方法などを用
いることができる。Further, when the conductive composition layer is formed, the method of forming the conductive composition into a sheet is not particularly limited, either. A usual sheet forming method or the method of forming the conductive composition on a support may be used. A method of coating and drying can be used.
【００２７】さらに、上記高分子電解質以外に、接着力
や粘着力を高めるための添加剤、あるいは導電性を高め
るための添加剤等を加えてもよい。また、上記導電性組
成物層の表面に直接金属膜を形成し、それによって金属
膜からなる第１，第２の電極と導電性組成物層とを密着
させてもよく、その場合には、導電性組成物層は接着力
や粘着力をそれ自体が有するものでなくともよい。Further, in addition to the above-mentioned polymer electrolyte, an additive for improving the adhesive strength and the adhesive strength, an additive for improving the conductivity, and the like may be added. Further, a metal film may be formed directly on the surface of the conductive composition layer, and the first and second electrodes formed of the metal film may be in close contact with the conductive composition layer. In that case, The conductive composition layer does not have to have adhesive strength or tackiness itself.
【００２８】本発明による剥離方法では、第１，第２の
電極間に導電性組成物層が挟まれている構造を少なくと
も有する積層接合体の第１，第２の電極間に電圧を印加
し、陽極側の電極を陽極酸化することにより、陽極側の
電極が脆弱化もしくは消失する。従って、陽極側の電極
と導電性組成物層との間の界面で容易に剥離することが
できる。また、剥離時にいわゆる糊残りと称されている
現象も生じ難いので、陽極側の電極背面に配置される被
着体を容易に再利用することができる。また、第１，第
２の電極間に電圧を印加し、陽極酸化により上記界面に
おける剥離を容易とするため、第１，第２の電極が大面
積の場合であっても、確実に上記界面における剥離を容
易化することができる。In the peeling method according to the present invention, a voltage is applied between the first and second electrodes of the laminated joined body having at least a structure in which the conductive composition layer is sandwiched between the first and second electrodes. By anodizing the anode electrode, the anode electrode is weakened or disappears. Therefore, it can be easily separated at the interface between the electrode on the anode side and the conductive composition layer. In addition, since a phenomenon called so-called adhesive residue hardly occurs at the time of peeling, the adherend disposed on the back surface of the electrode on the anode side can be easily reused. In addition, since a voltage is applied between the first and second electrodes to facilitate separation at the interface by anodic oxidation, even when the first and second electrodes have a large area, the interface can be reliably formed. Can be easily separated.
【００２９】本発明に係る剥離性シートは、第１，第２
の電極と、第１，第２の電極間に挟まれた導電性組成物
層とを有するので、本発明に係る剥離方法を利用するこ
とにより、被着体から糊残りを生じさせることなく容易
に剥離することができる。The peelable sheet according to the present invention comprises first and second
And the conductive composition layer sandwiched between the first and second electrodes, the use of the peeling method according to the present invention facilitates the generation of adhesive residue from the adherend. Can be peeled off.
【００３０】また、第１，第２の電極が、複数の金属膜
を積層した構造を有し、陽極側の電極において、導電性
組成物層との界面側に積層されいてる金属膜が、他の金
属膜よりも標準電極電位が低い金属により構成されてい
る場合には、前述したように、陽極酸化が進行した場合
であっても、確実に電圧を印加し続けることができる。Further, the first and second electrodes have a structure in which a plurality of metal films are laminated, and in the anode electrode, the metal film laminated on the interface side with the conductive composition layer is different from the other. As described above, even when the anodic oxidation has progressed, the voltage can be reliably applied continuously when the metal film is made of a metal having a standard electrode potential lower than that of the metal film.
【００３１】[0031]
【実施例】以下、本発明の非限定的な実施例を挙げるこ
とにより、本発明を詳細に説明する。The present invention will now be described in detail with reference to non-limiting examples.
【００３２】（実施例１）以下の成分を秤量し、高分子
電解質を作製するための溶液を得た。 ４−ヒドロキシブチルアクリレート １３０重量部 アクリル酸 ７０重量部 グリセリン ３０重量部 水 １９重量部 水酸化カリウム １９重量部 アエロジル ３重量部 トリエチレン−ビス−メタクリレート ０．３５重量部 ベンジルメチルケタル ０．３５重量部 上記のようにして用意した溶液を、バーコートにより、
フィルム上に厚さ約３００μｍとなるように塗布し、超
高圧水銀灯で４０ｍＷ及び５分間の条件で紫外線を照射
し、紫外線重合し、高分子電解質シートからなる導電性
組成物層を構成した。Example 1 The following components were weighed to obtain a solution for preparing a polymer electrolyte. 4-hydroxybutyl acrylate 130 parts by weight Acrylic acid 70 parts by weight Glycerin 30 parts by weight Water 19 parts by weight Potassium hydroxide 19 parts by weight Aerosil 3 parts by weight Triethylene-bis-methacrylate 0.35 parts by weight Benzyl methyl ketal 0.35 parts by weight The solution prepared as above, by bar coating,
The composition was applied on the film so as to have a thickness of about 300 μm, irradiated with ultraviolet light at 40 mW for 5 minutes using an ultra-high pressure mercury lamp, and polymerized by ultraviolet light to form a conductive composition layer composed of a polymer electrolyte sheet.
【００３３】次に、片面にＣｒ膜及びＺｎ膜が蒸着によ
り順次積層形成されたポリエチレンテレフタレート（Ｐ
ＥＴ）フィルムを２枚用意した。次に、上記のようにし
て得た高分子電解質シートの両面に、上記ＰＥＴフィル
ムを積層金属膜が形成されいてる面が内側となるように
ラミネートし、剥離性シートを作製した。Next, a polyethylene terephthalate (P) in which a Cr film and a Zn film are sequentially laminated on one side by vapor deposition is formed.
ET) Two films were prepared. Next, the PET film was laminated on both sides of the polymer electrolyte sheet obtained as described above such that the surface on which the laminated metal film was formed was on the inner side, to produce a peelable sheet.
【００３４】上記のようにして得た剥離性シートでは、
上記積層金属膜により第１，第２の電極が形成されてお
り、第１，第２の電極間に上記高分子電解質シートから
なる導電性組成物層が構成されている。また、第１，第
２の電極は、Ｃｒ膜側が導電性組成物層に接触されてい
る。In the release sheet obtained as described above,
First and second electrodes are formed by the laminated metal film, and a conductive composition layer made of the polymer electrolyte sheet is formed between the first and second electrodes. The first and second electrodes have the Cr film side in contact with the conductive composition layer.
【００３５】なお、用意した上記剥離性シートの寸法
は、１０ｃｍ×１０ｃｍ×厚さ０．５ｍｍであり、第
１，第２の電極は、導電性組成物層の上面及び下面の全
面を覆っている。The prepared peelable sheet has dimensions of 10 cm × 10 cm × 0.5 mm in thickness, and the first and second electrodes cover the entire upper and lower surfaces of the conductive composition layer. I have.
【００３６】上記のようにして得た剥離性シートの第
１，第２の電極間に５０Ｖの直流電圧を第１の電極が陽
極側となるようにして１分印加した。しかる後、第１の
電極と導電性組成物層との間の界面で剥離し、１８０°
剥離強度をＪＩＳ Ｚ０２３７の８．３ １８０℃引き
剥がし粘着力の測定法に従って測定した。A DC voltage of 50 V was applied between the first and second electrodes of the peelable sheet obtained as described above for one minute so that the first electrode was on the anode side. Thereafter, peeling was performed at the interface between the first electrode and the conductive composition layer, and the 180 °
The peel strength was measured according to JIS Z0237, 8.3 180 ° peeling adhesion strength measuring method.
【００３７】また、上記電圧印加前にも、上記剥離性シ
ートについて同様にして１８０°剥離強度を測定した。
その結果、電圧印加前には、１８０°剥離強度は２ｋｇ
／ｃｍであったのに対し、電圧印加後には、０．１ｋｇ
／ｃｍに低下していた。Before the application of the voltage, the 180 ° peel strength of the peelable sheet was measured in the same manner.
As a result, before the voltage was applied, the 180 ° peel strength was 2 kg.
/ Cm after application of the voltage,
/ Cm.
【００３８】従って、上記第１の電極の陽極酸化によ
り、第１の電極と導電性組成物層との間の界面で容易に
剥離し得ることがわかる。また、電圧印加後に剥離した
際の剥離面を観察したところ、剥離は、第１の電極と導
電性組成物層との間の界面で起こっており、剥離面、す
なわち第１の電極が積層されていた側のＰＥＴフィルム
面に糊残りは認められなかった。Accordingly, it can be seen that the first electrode can be easily peeled off at the interface between the first electrode and the conductive composition layer by anodic oxidation. In addition, when the peeled surface when peeled after voltage application was observed, peeling occurred at the interface between the first electrode and the conductive composition layer, and the peeled surface, that is, the first electrode was laminated. No adhesive residue was observed on the PET film surface on the side where the adhesive was applied.
【００３９】[0039]
【発明の効果】以上のように、本発明に係る剥離方法で
は、第１，第２の電極間に電圧を印加し、陽極側の電極
を陽極酸化し、該電極と導電性組成物層との間界面で剥
離するため、電圧を印加することにより、任意の時に積
層接合体を剥離することができる。しかも、電圧印加に
より剥離を容易とするものであり、加熱が不要であるた
め、大面積の積層接合体であっても、容易に剥離するこ
とができる。As described above, in the stripping method according to the present invention, a voltage is applied between the first and second electrodes, the anode on the anode side is anodized, and the electrode and the conductive composition layer are separated. Since the layers are separated at the interface, the laminated joined body can be separated at any time by applying a voltage. In addition, since peeling is facilitated by applying a voltage and heating is not required, even a large-area laminated joint can be easily peeled.
【００４０】また、剥離面に糊残りが生じ難いので、剥
離した部材を容易に再利用することができる。Further, since adhesive residue hardly occurs on the peeled surface, the peeled member can be easily reused.
【図１】本発明に係る剥離方法に用いられる積層接合体
の一例を示す断面図。FIG. 1 is a cross-sectional view showing an example of a laminated joint used in a peeling method according to the present invention.
【図２】本発明に係る剥離方法に用いられる積層接合体
の他の例を示す断面図。FIG. 2 is a cross-sectional view showing another example of the laminated joined body used in the peeling method according to the present invention.
【図３】本発明に係る剥離方法に用いられる積層接合体
のさらに他の例を示す断面図。FIG. 3 is a cross-sectional view showing still another example of the laminated joined body used in the peeling method according to the present invention.
【図４】図１に示した積層接合体の第１，第２の電極間
に電圧を印加する方法を説明するための断面図。FIG. 4 is a sectional view for explaining a method of applying a voltage between the first and second electrodes of the laminated joined body shown in FIG. 1;
【図５】第１，第２の電極が単一の金属膜からなる場合
の陽極酸化の進行状態を説明するための断面図FIG. 5 is a cross-sectional view for explaining the progress of anodic oxidation when the first and second electrodes are formed of a single metal film.
【図６】第１，第２の電極が積層金属膜により構成され
ている場合の陽極酸化の進行状態を説明するための断面
図FIG. 6 is a cross-sectional view for explaining the progress of anodic oxidation when the first and second electrodes are formed of a laminated metal film.
１…被着体 ２，３…第１，第２の電極 ２ａ，２ｂ…金属膜 ４…導電性組成物層 ５…剥離性シート ６，７…接着剤層 ８，９…基材 １０，１０…第１，第２の電極を兼ねる被着体 １１…導電性組成物層 DESCRIPTION OF SYMBOLS 1 ... Adherend 2, 3 ... 1st, 2nd electrode 2a, 2b ... Metal film 4 ... Conductive composition layer 5 ... Peelable sheet 6, 7 ... Adhesive layer 8, 9 ... Substrate 10, 10 ... Adherends serving also as first and second electrodes 11 .. Conductive composition layer
Claims (4)
挟まれている構造を少なくとも有する積層接合体を層間
剥離する方法であって、 第１，第２の電極間に電圧を印加し、陽極側の電極を陽
極酸化し、該電極と導電性組成物層との間の界面で剥離
することを特徴とする剥離方法。1. A method for delaminating a laminated joined body having at least a structure in which a conductive composition layer is sandwiched between first and second electrodes, wherein a voltage is applied between the first and second electrodes. And anodizing the electrode on the anode side, and separating at the interface between the electrode and the conductive composition layer.
剥離性シートであって、 第１，第２の電極と、 第１，第２の電極間に挟まれた導電性組成物層とを備え
ることを特徴とする剥離性シート。2. A peelable sheet used in the peeling method according to claim 1, wherein the first and second electrodes, and a conductive composition layer sandwiched between the first and second electrodes. A releasable sheet comprising:
した構造を有する請求項２に記載の剥離性シート。3. The peelable sheet according to claim 2, wherein the first and second electrodes have a structure in which a plurality of metal films are laminated.
層との界面側に積層されている金属膜が、他の金属膜よ
りも標準電極電位が低い金属により構成されている請求
項３に記載の剥離性シート。4. The metal film laminated on the interface side with the conductive composition layer among the plurality of metal films is made of a metal having a standard electrode potential lower than other metal films. 4. The peelable sheet according to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13427599A JP3848490B2 (en) | 1999-05-14 | 1999-05-14 | Peeling method and peelable joined body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13427599A JP3848490B2 (en) | 1999-05-14 | 1999-05-14 | Peeling method and peelable joined body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000319599A true JP2000319599A (en) | 2000-11-21 |
| JP3848490B2 JP3848490B2 (en) | 2006-11-22 |
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ID=15124483
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13427599A Expired - Fee Related JP3848490B2 (en) | 1999-05-14 | 1999-05-14 | Peeling method and peelable joined body |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003129030A (en) * | 1999-07-14 | 2003-05-08 | Eic Lab Inc | Electric bonding releasing material |
| WO2007018239A1 (en) * | 2005-08-09 | 2007-02-15 | The Yokohama Rubber Co., Ltd. | Electropeeling composition, and making use of the same, adhesive and electropeeling multilayer adhesive |
| WO2008150227A1 (en) * | 2007-06-05 | 2008-12-11 | Stora Enso Ab | An electrochemically weakable adhesive and a laminate structure |
| JP2009502584A (en) * | 2005-08-01 | 2009-01-29 | ストゥラ エンソ アクチボラグ | Laminated structure |
| US20110003920A1 (en) * | 2009-07-06 | 2011-01-06 | The Yokohama Rubber Co. | Tire-wheel assembly and disassembly method for the same |
| JP2011052056A (en) * | 2009-08-31 | 2011-03-17 | Big Technos Kk | Electrically peelable pressure-sensitive adhesive article and method for peeling off the same |
| JP2014189672A (en) * | 2013-03-27 | 2014-10-06 | Lintec Corp | Electrically peelable adhesive composition, electrically peelable adhesive sheet and method for using electrically peelable adhesive sheet |
| JP2015198114A (en) * | 2014-03-31 | 2015-11-09 | 富士通株式会社 | Interposer structure and method of manufacturing semiconductor device |
| JP2017075289A (en) * | 2015-10-16 | 2017-04-20 | 日東電工株式会社 | Adhesive sheet joint separating method |
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1999
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7465492B2 (en) | 1999-07-14 | 2008-12-16 | Eic Laboratories, Inc. | Electrically disbondable compositions and related methods |
| US7968188B2 (en) | 1999-07-14 | 2011-06-28 | Eic Laboratories, Inc. | Electrically disbonding materials |
| JP2003129030A (en) * | 1999-07-14 | 2003-05-08 | Eic Lab Inc | Electric bonding releasing material |
| JP2009502584A (en) * | 2005-08-01 | 2009-01-29 | ストゥラ エンソ アクチボラグ | Laminated structure |
| WO2007018239A1 (en) * | 2005-08-09 | 2007-02-15 | The Yokohama Rubber Co., Ltd. | Electropeeling composition, and making use of the same, adhesive and electropeeling multilayer adhesive |
| WO2008150227A1 (en) * | 2007-06-05 | 2008-12-11 | Stora Enso Ab | An electrochemically weakable adhesive and a laminate structure |
| US20110003920A1 (en) * | 2009-07-06 | 2011-01-06 | The Yokohama Rubber Co. | Tire-wheel assembly and disassembly method for the same |
| JP2011011724A (en) * | 2009-07-06 | 2011-01-20 | Yokohama Rubber Co Ltd:The | Tire-wheel assembly and disassembly method for the same |
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| JP2011052056A (en) * | 2009-08-31 | 2011-03-17 | Big Technos Kk | Electrically peelable pressure-sensitive adhesive article and method for peeling off the same |
| JP2014189672A (en) * | 2013-03-27 | 2014-10-06 | Lintec Corp | Electrically peelable adhesive composition, electrically peelable adhesive sheet and method for using electrically peelable adhesive sheet |
| JP2015198114A (en) * | 2014-03-31 | 2015-11-09 | 富士通株式会社 | Interposer structure and method of manufacturing semiconductor device |
| JP2017075289A (en) * | 2015-10-16 | 2017-04-20 | 日東電工株式会社 | Adhesive sheet joint separating method |
| US10203420B2 (en) * | 2017-05-11 | 2019-02-12 | Redlen Technologies, Inc. | Dual sided tape attachment to cathode electrode of radiation detector |
| JP2020147761A (en) * | 2020-06-17 | 2020-09-17 | 日東電工株式会社 | Adhesive sheet joint separating method |
| JP7028913B2 (en) | 2020-06-17 | 2022-03-02 | 日東電工株式会社 | Adhesive sheet joint separation method |
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