JPH01197588A - Surface treatment of adherend - Google Patents

Surface treatment of adherend

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Publication number
JPH01197588A
JPH01197588A JP2071888A JP2071888A JPH01197588A JP H01197588 A JPH01197588 A JP H01197588A JP 2071888 A JP2071888 A JP 2071888A JP 2071888 A JP2071888 A JP 2071888A JP H01197588 A JPH01197588 A JP H01197588A
Authority
JP
Japan
Prior art keywords
adherend
adhesive
wettability
surface treatment
bonding surface
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
Application number
JP2071888A
Other languages
Japanese (ja)
Inventor
Masami Ishii
正美 石井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP2071888A priority Critical patent/JPH01197588A/en
Publication of JPH01197588A publication Critical patent/JPH01197588A/en
Pending legal-status Critical Current

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  • Adhesives Or Adhesive Processes (AREA)

Abstract

PURPOSE:To improve the adhesive force of an adherend by improving the wettability of its bonding surface, by irradiating the bonding surface of said adherend with ultraviolet rays in an oxygen-containing atmosphere. CONSTITUTION:The bonding surface of an adherend comprising a metal, a metal plating, an organic compound, an inorganic compound or the like is irradiated with ultraviolet rays in an oxygen-containing atmosphere. The wettability of the bonding surface of the adherend can be increased. When this bonding surface is coated with an adhesive, it can be wetted well with the adhesive, and its bonding force can be further increased as compared with an adherend not subjected to said treatment. Because said surface treatment can be performed without injuring the bonding surface of an adherend, it is possible to improve the wettability of an adherend such as one required to be mirror-finished or a metal plating. Because this surface treatment is not one performed by a manual work, its effects do not disperse and the adhesive forces can be prevented from dispersing.

Description

【発明の詳細な説明】[Detailed description of the invention]

〔産業上の利用分野〕 本発明は、金属、金属メツキ、有機化合物あるいは無機
化合物等の被接着体の接着面のぬれ性を向上させる被接
着体の表面処理方法に関する。 〔従来の技術〕 ′−最に接着力は、接着剤と被接着体の相性(例えば化
学的吸着あるいは物理的吸着等の観点からの相性、)と
いうことでとらえられる場合が多いが、実際には被接着
体のぬれ性に関与するところが大きい。 ねれ性とは被接着体に対し接着剤がはじかずにどの程度
ねれるかをいい、ねれ性が悪い場合には如何なる強力な
接着剤を使用したとしても接着力は向上しない、そこで
、ねれ性を向上させることが接着力を向上させる重要な
ポイントとなる。 被接着体のぬれ性を向上させるには、例えばサンドブラ
スト、サンドペーパー、ブラシあるいはパフ等により被
接着体の接着面に凹凸の溝を形成して表面粗化させると
ともに、ぬれ性の悪い層を除去して当該接着面のぬれ性
を向上させ、その凹凸の溝に接着剤を充填させて当該接
着剤を固定させるいわゆるアンカー効果により接着力の
向上を図る方法が知られている。 あるいは、被接着体の接着面に被着されている油脂層等
、すなわちぬれ性を低下させる不純物層等をMEK (
メチルエチレンケトン)、アルコート、アセトン等の有
機溶剤あるいは水等により洗浄して除去する方法等が知
られている。 〔発明が解決しようとする課題〕 ところが、上記被接着体の接着面の凹凸溝は、通常手作
業で行われるため研磨処理に時間がかかるとともに、そ
の凹凸溝の大きさや深さ等にばらつきを生ずることが多
い。このため、上記凹凸溝が形成された接着面に接着剤
を塗布した場合、接着力にばらつきを生じてしまい良好
な接合強度が得られない。 また、上記接着剤が高粘度(例えば5000cps以上
。)若しくはフィルム状である場合には、上記凹凸溝に
接着剤が充填されない。これに対して低粘度の接着剤を
用いた場合には、上記凹凸溝に接着剤が充填されるもの
の当該凹凸溝の大きさや深さ等のばらつきの影響により
接着力のばらつきが生しやはり良好な接合強度が得られ
ない。 さらにこの研磨による表面処理方法は、平面出しを必要
とする被接着体には不適当であり、メツキ等に適用する
ことはできない。 また、溶剤による洗浄方法では、不純物層を完全に除去
するのに長時間必要とするため生産性が低下し、さらに
はそのねれ性の向上はさほど得られず接着力のばらつき
も大きい。 また、被接着体が有機フィルムである場合には、当該有
機フィルムを劣化させることがあり、特に鏡面仕上げを
必要とする被接着体には好ましくない。さらには、アル
コールやアセトン等の溶剤を用いているので作業者の身
体に悪影響を与える等適当でない。 そこで、本発明は、上述のような課題を解消すべく提案
されたものであって、被接着体のねれ性を向上させ、接
着力の向上を図ろうとするものである。 〔課題を解決するための手段〕 本発明は、上記の目的を達成するために、被接着体の接
着面に対し酸素を含む雰囲気中で紫外線を照射すること
を特徴とするものである。 〔作用〕 本発明方法によれば、被接着体の接着面に酸素を含む雰
囲気中で紫外線を照射しているので、当該被接着体の接
着面のねれ性は向上する。 そして、上記被接着体の接着面に接着剤をコーティング
すると良好に接着剤がぬれ、上記表面処理が施されてい
ない被接着体の接着力に比べてその接着力は一層向上す
る。 ここで、被接着体の接着面に対し酸素を含む雰囲気中で
紫外線を照射することで当該被接着体のぬれ性が向上す
ることについては、次のように考えられる。 例えば、空気中で184.9nmと253.7nmであ
る波長の紫外線を被接着体の接着面に照射した場合、上
記紫外線のうち184.9nmの波長の紫外線により空
気中に含まれる0、が強い酸化作用を有する酸素ラジカ
[Industrial Field of Application] The present invention relates to a method for surface treatment of an adherend such as metal, metal plating, organic compound, or inorganic compound to improve the wettability of the bonding surface of the adherend. [Prior art] ′-Finally, adhesive strength is often understood in terms of the compatibility between the adhesive and the adhered object (for example, compatibility from the viewpoint of chemical adsorption or physical adsorption), but in reality it is is largely involved in the wettability of the adherend. Wandering property refers to the degree to which an adhesive can twist against an object to be bonded without being repelled. If the bending property is poor, no matter how strong an adhesive is used, the adhesive force will not improve. Improving the bendability is an important point in improving adhesive strength. To improve the wettability of the adherend, for example, use sandblasting, sandpaper, brush, or puff to roughen the surface by forming uneven grooves on the adhesive surface of the adherend, and remove the layer with poor wettability. There is a known method of improving the adhesive force by the so-called anchor effect, which improves the wettability of the adhesive surface and fixes the adhesive by filling the uneven grooves with the adhesive. Alternatively, MEK (
Methods are known in which the organic solvent is removed by washing with an organic solvent such as methyl ethylene ketone), Alquat, or acetone, or water. [Problems to be Solved by the Invention] However, since the uneven grooves on the bonding surface of the above-mentioned object to be adhered are usually polished manually, it takes time to polish the grooves, and the uneven grooves have variations in size, depth, etc. It often occurs. For this reason, when an adhesive is applied to the adhesive surface on which the uneven grooves are formed, variations in adhesive strength occur, making it impossible to obtain good bonding strength. Further, if the adhesive has a high viscosity (for example, 5000 cps or more) or is in the form of a film, the uneven grooves are not filled with the adhesive. On the other hand, when a low-viscosity adhesive is used, although the adhesive is filled into the uneven grooves, the adhesive force varies due to the influence of variations in the size and depth of the uneven grooves, so it is still good. It is not possible to obtain sufficient bonding strength. Furthermore, this surface treatment method by polishing is unsuitable for objects to be adhered that require flattening, and cannot be applied to plating or the like. Furthermore, in the cleaning method using a solvent, productivity decreases because a long time is required to completely remove the impurity layer, and furthermore, the improvement in the bendability is not so great and the adhesive strength varies widely. Further, when the object to be adhered is an organic film, the organic film may be deteriorated, which is not preferable especially for an object to be adhered which requires a mirror finish. Furthermore, since a solvent such as alcohol or acetone is used, it is not appropriate as it may have a negative effect on the body of the worker. Therefore, the present invention has been proposed in order to solve the above-mentioned problems, and is intended to improve the bending property of the adherend and improve the adhesive force. [Means for Solving the Problems] In order to achieve the above object, the present invention is characterized in that the bonding surface of an adherend is irradiated with ultraviolet rays in an oxygen-containing atmosphere. [Function] According to the method of the present invention, since the adhesive surface of the adherend is irradiated with ultraviolet rays in an atmosphere containing oxygen, the bendability of the adhesive surface of the adherend is improved. When the adhesive surface of the object to be adhered is coated with an adhesive, the adhesive is well wetted, and the adhesive force is further improved compared to that of an object to be adhered which has not been subjected to the above-mentioned surface treatment. Here, the reason why the wettability of the adherend is improved by irradiating the adhesive surface of the adherend with ultraviolet rays in an oxygen-containing atmosphere is considered as follows. For example, when the adhesive surface of the adherend is irradiated with ultraviolet rays with wavelengths of 184.9 nm and 253.7 nm in the air, the 0 contained in the air becomes stronger due to the ultraviolet rays with the wavelength of 184.9 nm. Oxygen radical with oxidizing effect

〔0〕に分解される。ずなわち、02− (0)+ 
(0)となる。さらに、上記酸素ラジカル
It is decomposed into [0]. That is, 02- (0)+
(0). Furthermore, the above oxygen radical

〔0〕は空気
中の0.と反応し、(0)+O□→0.となり、上記0
.は253.7nmの波長の紫外線により03−3  
(o)となる。 この酸化作用を有する酸素ラジカル(0)により、上記
被接着体の接着面のぬれ性を劣化させる例えば油脂層等
の不純物層は酸化され分解されて揮発性のCot 、H
,O,Nz等に変化させられ除去されてしまうものと考
えられる。このため、上記被接着体の接着面のぬれ性が
向上するものと推測される。 また、被接着体がポリイミドやポリエステル等の有機樹
脂である場合には、当該有機樹脂を形成する一層)[基
は上記酸化ラジカル
[0] is 0.0 in the air. Reacts with (0)+O□→0. So, the above 0
.. is 03-3 by ultraviolet rays with a wavelength of 253.7 nm.
(o). Due to this oxygen radical (0) having an oxidizing effect, impurity layers such as oil and fat layers that deteriorate the wettability of the bonding surface of the adherend are oxidized and decomposed to form volatile Cot, H
, O, Nz, etc., and are removed. Therefore, it is presumed that the wettability of the adhesive surface of the object to be adhered is improved. In addition, when the object to be adhered is an organic resin such as polyimide or polyester, the layer forming the organic resin) [the group is the oxidation radical mentioned above]

〔0〕の酸化作用により、ねれ性の
高い−COO)Iや一層H等の親水基活性種に化学的に
変化させられると考えられ、当該被接着体のねれ性が向
上するものと推測される。 〔実施例〕 以下、本発明を適用した一実施例について説明する。 本実施例は、被接着体の接着面に対し酸素を含む雰囲気
中で紫外線を照射して当該被接着体のぬれ性を向上させ
るものである。 ここで、本実施例では被接着体として金属、金属メツキ
、無機化合物を使用した。すなわち、金属には鉄としん
ちゅうを用い、金属メツキにはニッケルメッキとクロム
メツキおよびクロム酸処理亜鉛を用い、無機化合物には
フェライトとセラミックスを用いた。 また、上記被接着体に照射させる紫外線には、184.
9amと253.7amの波長の光を発生する紫外線ラ
ンプを用いた。なお、本例ではこれらの条件を満たすも
のとして低圧水銀ランプを使用した。 そして、上記各材料からなる被接着体の接着面に上記波
長の紫外線を空気中で180秒間照射した。なお、上記
処理を行うのにオーク社製のドライプロセッサー装置を
使用した。 その結果、第1図に示すように、上記鉄、しんちゅう、
ニッケルメッキ、クロムメツキ、クロム酸処理亜鉛、フ
ェライト、セラミックスの全ての被接着体は良好なぬれ
指数(図中斜線で示すグラフ。)を示した。なお、上記
ぬれ性の評価方法としては、JIS規格のぬれ指数標準
液を使用する方法を用いて測定した。 すなわち、これら被接着体のぬれ指数はおよそ54 d
yne/ ctaとなっており上記処理が施されていな
い被接着体のぬれ指数(図中横縞のグラフ。)に対して
そのぬれ指数は高くなっている。上記ぬれ指数が54d
yne/cmであると、表面処理が施されていない被接
着体の接着力に比べその接着力がおよそ2〜3倍向上す
る。このため、上記処理を施すことによりかなりのぬれ
性の向上が図れたことになる。 また、第2図に示すように、表面処理時間とぬれ指数と
の関係は、その表面処理時間が0秒から90秒まではぬ
れ指数が約35 dyne/ ellと略一定となり、
その表面処理時間が90秒を越えると急激にぬれ指数が
向上する。そして、その表面処理時間が120秒を越え
るとぬれ指数は約54dyne/cIlとなり、その後
は略一定のぬれ指数を示す。 なお、第2図は被接着体としてニッケルメッキを用いた
場合の表面処理時間とぬれ指数を示す図である。 この結果、表面処理時間を少なくとも120秒以上とす
ることで良好なぬれ指数を示すものであるあることがわ
かった。したがって、短時間に表面処理することができ
るため、生産性の向上が図れる。 また、上記処理が施された被接着体の接着面は、当該被
接着体の接着面を傷付ける凹凸溝等が無いものとがって
いるため、鏡面仕上げを必要とする被接着体、あるいは
平面度出しを必要とする被接着体等のぬれ性を向上させ
ることが可能となる。 さらに、ぬれ性の向上を図るのが困難であるとされてい
た金属メツキのメツキ部に損傷を与えることなくぬれ性
を向上させることが可能となる。 また、上記表面処理は手作業によらず処理できるので当
該表面処理のばらつきがなくなり、さらに接着力のばら
つきも防止され信頼性に優れる。 本発明方法は、例えば上述のような被接着体のみならず
、有機化合物の被接着体に対してもぬれ性の向上を図る
ことが可能である。 その−例として、例えばポリイミドあるいはポリエステ
ルからなるフレキシブル基板に対して零発叫方法の表面
処理を施し、その後上記フレキシブル基板の接着面に接
着剤をコーティングしてリジツト基板を接着する工程と
ともに説明する。 先ず、第3図に示すように、片面側に−Cuパターン(
1)が形成されてなるポリイミドあるいはポリエステル
からなるフレキシブル基板(2)を用意する。なお、上
記フレキシブル基板(2)に形成されるCuパターン(
1)は両面に形成されたものであってもよく、さらに上
記フレキシブル基板(2)は多層化されたものであって
も差し支えない。 次に、上記フレキシブル基板(2)の接着面(2a)に
空気中で先の実施例と同様184.9amと253.7
amの波長の光を発生する紫外線ランプ(本例では低圧
水銀ランプ)を用い、その照度を5〜10mW/−とし
て20〜60秒照射した。 次いで、第4図に示すように、上記処理が施されたフレ
キシブル基板(2)の接着面(2a)にフィルム状の接
着剤(3)をコーティングする。そして、上記接着剤(
3)上にリジット基板(4)を載置して当該接着剤(3
)を挟み込むようにして加熱しながらその基板(2) 
、 (4)の両側から加圧して上記フレキシブル基板(
2)とりジット、1板(4)を接合一体化させた。 上記フィルム状の接着剤(3)には、デュポン社製の商
品名バイララックスあるいは住友化学社製の商品名パー
マフレックス AF−055を使用した。なお、上記フ
ィルム状の接着剤(3)の他に例えば液状の接着剤を使
用しても差し支えない。 また、上記リジット基板(4)の材料としては、例えば
ガラス−エポキシ樹脂基板2紙−エポキシ樹脂基板1紙
−フエノール樹脂基板、金属基板等が挙げられる。 なお、本実施例では上記リジット基板(4)の片面にC
uパターン(5)が形成されているが、上記Cuパター
ン(5)は両面に形成されたものであってもよい。さら
には、上記リジット基板(4)は多層化されたものであ
ってもよい。 また、上記加熱および加圧の条件としては、温度を15
0℃〜180℃とし、圧力を10〜15kg / ci
とした・そして、これらの処理時間を30秒〜120秒
とした。 上述のような処理を施した後、前記各材料からなるフレ
キシブル基板(2)の剥離強度を測定した。 なお、剥離強度は、リジット基板(4)をフレキシブル
基板(2)から垂直方向に剥離して測定し、測定数量は
各10個とした。 その結果、ポリイミドを用いたフレキシブル基板の71
1離強度は、2 、 2〜2 、 5 kg/ Cl1
1でその平均値が2.3kg/(Jであった。なお、本
発明を適用した場合のllilfll強度と比較するた
め上記表面処理が施されていない場合のフレキシブル基
板の剥離強度を測定したところ、1.0〜1.7kg/
cmでその平均値が1.3kg/cmであった。 また、ポリエステルを用いたフレキシブル基板での剥離
強度は、2.1〜2.5kg/cmでその平均値が2.
2kg/cmであった。同様に表面処理が施されていな
い場合のフレキシブル基板(ポリエステル)の剥離強度
も測定したところ、0.9〜1.6に+r/amでその
平均値が1.1kg/cmであった。 上記の結果かられかるように、ポリイミド、ポリエステ
ルを用いたフレキシブル基板の剥離強度は、いずれも表
面処理を施していない場合の剥離強度よりも略2倍程度
の向上が得られ、さらにその剥離強度は上記表面処理を
施していないものに比べてばらつきが減少した。なお、
接着剤にバイララックス、パーマフレックスのいずれを
使用しても上記フィルム状の接着剤を使用した場合と略
同様な(直が得られた。 したがって、上記表面処理はフレキシブル基板の接着面
のぬれ性を向上させるものであるということが言える。 また、上記の結果から、接着剤の粘度に無関係に良好な
剥離強度が得られるためその接着剤の種類を選ばずに接
合可能となる。 〔発明の効果〕 以上の説明からも明らかなように、本発明方法によれば
、被接着体の接着面に酸素を含む雰囲気中で紫外線を照
射しているので当該被接着体の接着面のぬれ性が向上す
る。 このため、被接着体にコーティングされる接着剤は良好
にぬれるので当該被接着体の接着力が向上する。 また、上記表面処理は当該被接着体の接着面を傷付ける
ことなく処理できるので、鏡面仕上げを必要とするもの
や金属メツキ等の被接着体のぬれ性の向上も図ることが
可能である。 さらに、上記表面処理は、手作業により施されるもので
はないので処理にばらつきが生ずることがな(、接着力
のばらつきも防止でき信頼性に優れたものである。 また、上記表面処理は、短時間で処理可能であるため生
産性の向上も図れる。
It is thought that the oxidation effect of [0] chemically changes it into hydrophilic active species such as -COO)I and H more, which have high malleability, and improves the malleability of the adherend. Guessed. [Example] Hereinafter, an example to which the present invention is applied will be described. In this embodiment, the wettability of the adherend is improved by irradiating the adhesive surface of the adherend with ultraviolet rays in an oxygen-containing atmosphere. Here, in this example, metal, metal plating, and an inorganic compound were used as objects to be adhered. That is, iron and brass were used for the metals, nickel plating, chrome plating, and chromic acid-treated zinc were used for the metal plating, and ferrite and ceramics were used for the inorganic compounds. Further, the ultraviolet rays irradiated onto the adherend are 184.
Ultraviolet lamps producing light at wavelengths of 9 am and 253.7 am were used. Note that in this example, a low-pressure mercury lamp was used as one that satisfies these conditions. Then, ultraviolet rays of the above wavelengths were irradiated in the air for 180 seconds on the bonding surfaces of the objects to be bonded made of the above-mentioned materials. Note that a dry processor manufactured by Oak Co., Ltd. was used to perform the above treatment. As a result, as shown in Figure 1, the above iron, brass,
All the adherends made of nickel plating, chrome plating, chromic acid treated zinc, ferrite, and ceramics showed good wettability index (the graph shown by diagonal lines in the figure). The wettability was evaluated using a method using a JIS standard wettability index standard solution. That is, the wettability index of these adherends is approximately 54 d
yne/cta, and the wetting index is higher than that of the adherend which has not been subjected to the above treatment (horizontal striped graph in the figure). The above wetness index is 54d
yne/cm, the adhesive strength is approximately 2 to 3 times higher than that of an adherend without surface treatment. Therefore, by carrying out the above treatment, the wettability was considerably improved. Furthermore, as shown in Fig. 2, the relationship between the surface treatment time and the wetting index is such that the wetting index is approximately constant at about 35 dyne/ell when the surface treatment time is from 0 seconds to 90 seconds.
When the surface treatment time exceeds 90 seconds, the wettability index increases rapidly. When the surface treatment time exceeds 120 seconds, the wetting index becomes approximately 54 dyne/cIl, and thereafter shows a substantially constant wetting index. Note that FIG. 2 is a diagram showing the surface treatment time and wettability index when nickel plating is used as the adherend. As a result, it was found that a good wetting index can be obtained by setting the surface treatment time to at least 120 seconds or more. Therefore, since surface treatment can be performed in a short time, productivity can be improved. In addition, the bonding surface of the bonded object that has undergone the above treatment is sharp and has no uneven grooves that may damage the bonding surface of the bonded object, so it is suitable for bonding objects that require mirror finishing or flatness. It becomes possible to improve the wettability of adherends, etc. that require Furthermore, it becomes possible to improve the wettability without damaging the plating portion of metal plating, which has been considered difficult to improve. Furthermore, since the surface treatment can be performed without manual work, variations in the surface treatment are eliminated, and variations in adhesive strength are also prevented, resulting in excellent reliability. The method of the present invention can improve wettability not only for the above-mentioned objects but also for objects made of organic compounds. As an example, a process will be described in which a flexible substrate made of, for example, polyimide or polyester is subjected to a surface treatment using the zero-singing method, and then an adhesive is coated on the adhesive surface of the flexible substrate and a rigid substrate is bonded to the flexible substrate. First, as shown in Figure 3, a -Cu pattern (
A flexible substrate (2) made of polyimide or polyester on which 1) is formed is prepared. Note that the Cu pattern (
The flexible substrate (1) may be formed on both sides, and the flexible substrate (2) may be multilayered. Next, the adhesive surface (2a) of the flexible substrate (2) was placed in the air at 184.9 am and 253.7 am as in the previous example.
Using an ultraviolet lamp (in this example, a low-pressure mercury lamp) that generates light with a wavelength of am, irradiation was performed for 20 to 60 seconds at an illuminance of 5 to 10 mW/-. Next, as shown in FIG. 4, a film-like adhesive (3) is coated on the adhesive surface (2a) of the flexible substrate (2) that has been subjected to the above treatment. Then, apply the above adhesive (
3) Place the rigid board (4) on top and apply the adhesive (3)
) while heating the substrate (2).
, (4) Apply pressure from both sides of the flexible substrate (
2) One board (4) was joined and integrated. As the film-like adhesive (3), Vyralux (trade name) manufactured by DuPont or Permaflex AF-055 (trade name) manufactured by Sumitomo Chemical Co., Ltd. was used. In addition to the film adhesive (3), for example, a liquid adhesive may be used. Further, examples of the material of the rigid substrate (4) include glass-epoxy resin substrate 2 paper-epoxy resin substrate 1 paper-phenol resin substrate, metal substrate, and the like. In this embodiment, C is applied to one side of the rigid board (4).
Although the U pattern (5) is formed, the Cu pattern (5) may be formed on both sides. Furthermore, the rigid substrate (4) may be multilayered. In addition, the heating and pressurizing conditions include a temperature of 15
0℃~180℃, pressure 10~15kg/ci
These processing times were set to 30 seconds to 120 seconds. After performing the above-described treatments, the peel strength of the flexible substrate (2) made of each of the above-mentioned materials was measured. The peel strength was measured by peeling the rigid substrate (4) from the flexible substrate (2) in the vertical direction, and the number of pieces measured was 10 pieces each. As a result, 71 of the flexible substrates using polyimide
1 separation strength is 2, 2~2, 5 kg/Cl1
1, the average value was 2.3 kg/(J.In addition, in order to compare with the llilflll strength when the present invention is applied, the peel strength of the flexible substrate without the above surface treatment was measured. , 1.0-1.7kg/
The average value in cm was 1.3 kg/cm. Furthermore, the peel strength of a flexible substrate using polyester is 2.1 to 2.5 kg/cm, with an average value of 2.5 kg/cm.
It was 2 kg/cm. Similarly, when the peel strength of the flexible substrate (polyester) without surface treatment was measured, the average value was 1.1 kg/cm at +r/am of 0.9 to 1.6. As can be seen from the above results, the peel strength of flexible substrates made of polyimide and polyester is approximately twice as high as that without surface treatment. The variation was reduced compared to the one without the above-mentioned surface treatment. In addition,
Regardless of whether Vyralux or Permaflex was used as the adhesive, almost the same stability as when using the above film adhesive was obtained. Furthermore, from the above results, it is possible to obtain good peel strength regardless of the viscosity of the adhesive, so that bonding can be performed regardless of the type of adhesive. [Effects] As is clear from the above explanation, according to the method of the present invention, since the bonding surface of the adherend is irradiated with ultraviolet rays in an oxygen-containing atmosphere, the wettability of the bonding surface of the adherend is improved. Therefore, the adhesive coated on the object to be adhered can be well wetted, and the adhesion force of the object to be adhered can be improved. Also, the above surface treatment can be performed without damaging the adhesive surface of the object to be adhered. Therefore, it is possible to improve the wettability of adherends such as objects that require a mirror finish or metal plating.Furthermore, since the above surface treatment is not applied manually, there may be variations in processing. It also prevents the occurrence of adhesive force variations and has excellent reliability. In addition, the above-mentioned surface treatment can be performed in a short time, so productivity can be improved.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は酸素雰囲気中での紫外線照射による被接着体の
ぬれ指数の変化をそれぞれ示す特性図である。 第2図はニッケルメッキの表面処理時間とぬれ指数の関
係を示す特性図である。 第3図はフレキシブル基板の表面処理工程を示す概略断
面図であり、第4図はりジット基板の接合工程を示す概
略断面図である。 2・・・フレキシブル基板 2a・・・接着面 3・・・接着剤 特 許 出 願 人 ソニー株式会社 代理人   弁理士 小 池   見 回  田村榮− 同  佐藤 勝 孟 第1図
FIG. 1 is a characteristic diagram showing changes in the wettability index of an adherend due to ultraviolet irradiation in an oxygen atmosphere. FIG. 2 is a characteristic diagram showing the relationship between the surface treatment time of nickel plating and the wetting index. FIG. 3 is a schematic sectional view showing a surface treatment process for a flexible substrate, and FIG. 4 is a schematic sectional view showing a bonding process for a beam board. 2...Flexible substrate 2a...Adhesive surface 3...Adhesive patent applicant: Sony Corporation representative Patent attorney: Mitsui Koike, Ei Tamura - Katsunori Sato Figure 1

Claims (1)

【特許請求の範囲】[Claims] 被接着体の接着面に対し酸素を含む雰囲気中で紫外線を
照射することを特徴とする被接着体の表面処理方法。
A method for surface treatment of an adherend, comprising irradiating the adhesive surface of the adherend with ultraviolet rays in an oxygen-containing atmosphere.
JP2071888A 1988-01-30 1988-01-30 Surface treatment of adherend Pending JPH01197588A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2071888A JPH01197588A (en) 1988-01-30 1988-01-30 Surface treatment of adherend

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2071888A JPH01197588A (en) 1988-01-30 1988-01-30 Surface treatment of adherend

Publications (1)

Publication Number Publication Date
JPH01197588A true JPH01197588A (en) 1989-08-09

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Application Number Title Priority Date Filing Date
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Country Link
JP (1) JPH01197588A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0461843A2 (en) * 1990-06-11 1991-12-18 Agency Of Industrial Science And Technology Methods of modifying metallic surfaces
US6099762A (en) * 1998-12-21 2000-08-08 Lewis; Paul E. Method for improving lubricating surfaces on disks
JP2008002870A (en) * 2006-06-21 2008-01-10 Ishida Co Ltd Load cell, and its manufacturing method
WO2010004829A1 (en) * 2008-07-10 2010-01-14 Ntn株式会社 Mechanical component and method for manufacturing the same
JP2012246543A (en) * 2011-05-30 2012-12-13 Meidensha Corp Passivation treatment method
JP2014159535A (en) * 2013-02-21 2014-09-04 Denso Corp Surface modification plated substrate, composite molded body and their manufacturing method
JP2015045225A (en) * 2009-10-22 2015-03-12 ダウ グローバル テクノロジーズ エルエルシー Direct mounted photovoltaic device with improved adhesion and method thereof
GB2579608A (en) * 2018-12-06 2020-07-01 Henkel IP & Holding GmbH Activating surfaces for subsequent bonding
US11661487B2 (en) 2017-06-13 2023-05-30 Henkel Ag & Co. Kgaa Activating surfaces for subsequent bonding
US11787911B2 (en) 2017-06-13 2023-10-17 Henkel Ag & Co. Kgaa Activating surfaces for subsequent bonding

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59198548A (en) * 1983-04-22 1984-11-10 Fuji Photo Film Co Ltd Manufacture of optical information recording medium
JPS61278583A (en) * 1985-06-03 1986-12-09 Mitsubishi Electric Corp Method of bonding coated steel plate
JPS62500106A (en) * 1984-08-31 1987-01-16 モトロ−ラ・インコ−ポレ−テッド Method for bonding surfaces of two materials and optical coupler manufactured thereby

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59198548A (en) * 1983-04-22 1984-11-10 Fuji Photo Film Co Ltd Manufacture of optical information recording medium
JPS62500106A (en) * 1984-08-31 1987-01-16 モトロ−ラ・インコ−ポレ−テッド Method for bonding surfaces of two materials and optical coupler manufactured thereby
JPS61278583A (en) * 1985-06-03 1986-12-09 Mitsubishi Electric Corp Method of bonding coated steel plate

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0461843A2 (en) * 1990-06-11 1991-12-18 Agency Of Industrial Science And Technology Methods of modifying metallic surfaces
EP0461843A3 (en) * 1990-06-11 1993-03-17 Agency Of Industrial Science And Technology Methods of modifying metallic surfaces
US6099762A (en) * 1998-12-21 2000-08-08 Lewis; Paul E. Method for improving lubricating surfaces on disks
JP2008002870A (en) * 2006-06-21 2008-01-10 Ishida Co Ltd Load cell, and its manufacturing method
US8603286B2 (en) 2008-07-10 2013-12-10 Ntn Corporation Mechanical part and manufacturing method for the same
JP2010038356A (en) * 2008-07-10 2010-02-18 Ntn Corp Mechanical component and manufacturing method for the same
CN102089532A (en) * 2008-07-10 2011-06-08 Ntn株式会社 Mechanical component and method for manufacturing the same
WO2010004829A1 (en) * 2008-07-10 2010-01-14 Ntn株式会社 Mechanical component and method for manufacturing the same
JP2015045225A (en) * 2009-10-22 2015-03-12 ダウ グローバル テクノロジーズ エルエルシー Direct mounted photovoltaic device with improved adhesion and method thereof
JP2012246543A (en) * 2011-05-30 2012-12-13 Meidensha Corp Passivation treatment method
JP2014159535A (en) * 2013-02-21 2014-09-04 Denso Corp Surface modification plated substrate, composite molded body and their manufacturing method
US11661487B2 (en) 2017-06-13 2023-05-30 Henkel Ag & Co. Kgaa Activating surfaces for subsequent bonding
US11787911B2 (en) 2017-06-13 2023-10-17 Henkel Ag & Co. Kgaa Activating surfaces for subsequent bonding
GB2579608A (en) * 2018-12-06 2020-07-01 Henkel IP & Holding GmbH Activating surfaces for subsequent bonding
GB2579608B (en) * 2018-12-06 2023-02-15 Henkel Ag & Co Kgaa Activating surfaces for subsequent bonding to another substrate
US11926768B2 (en) 2018-12-06 2024-03-12 Henkel Ag & Co. Kgaa Activating surfaces for subsequent bonding

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