JPS61207593A - Production of porous metallic body - Google Patents

Abstract

PURPOSE:To continuously a produce a porous metallic body having good quality at a high yield by bringing a resin provided with electrical conductivity into tight contact with a rotary cathode body deposited thereon with a porous metallic body then subjecting the resin to electroplating then to regular electroplating by an ordinary method. CONSTITUTION:The resin 1 made into the three-dimensional network structure provided preliminarily with the electrical conductivity is brought into tight contact with the rotary cathode body 2 on the surface of which the porous metallic body is deposited. Electricity is then conducted to the cathode body and the above-mentioned contact part is dipped into a plating liquid 3 in a plating cell 4, by which the resin is subjected to the primary electroplating. The substantial conductivity is thereby provided to the resin 1 and the generation of the foil-like resultant product is prevented. The resin 5 subjected to the primary electroplating is passed through plating liquids 9, 9' of the device arranged with plating cells 8, 8' provided with power feed rolls 6, 6' on the outside of the cells and anodes 7, 7', by which the resin is subjected to the regular plating and the thick plating layer having good quality is formed. The resin is removed after the plating and the porous metallic body is obtd. at a high yield.

Description

【発明の詳細な説明】 イ、産業上の利用分野 この発明は導電性葡付与した三次元網状構造体の樹脂に
連続式に電気メッキを施して金属多孔体（三次元網状構
造体）を製造する方法の改良に関するものである。[Detailed description of the invention] B. Industrial application field This invention manufactures a metal porous body (three-dimensional network structure) by continuously electroplating a three-dimensional network structure resin to which conductive material has been added. This relates to improvements in methods for

口。従来技術 □金属多孔体（三次元網状構造体）を製造するにはプラ
スチック樹脂の三次元網状構造体く網状構造で通気性を
有する発泡体、以下単に樹脂と言う）を造り、ギれに金
属メッキを施して製造する。金属メッキしたその侭の状
態で金属多孔体として使用することもあるが、一般には
その後にメッキした多孔体を加熱その他の方法で樹脂部
分を除去して金属多孔体としそ使用する。このメッキ法
として、（１）樹脂に直接化学メッキのみにより金属メ
ッキを行う方法と（２）樹脂に導電性を付与した後樹脂
を陰極として金属番電気メンキする方法がある。mouth. Conventional technology □ To produce a metal porous body (three-dimensional network structure), a three-dimensional network structure of plastic resin (hereinafter simply referred to as resin) is made, and a metal porous body is made. Manufactured by plating. Although it may be used as a metal porous body in its unplated state, generally the plated porous body is then heated or otherwise used to remove the resin portion and used as a metal porous body. This plating method includes (1) a method in which the resin is directly plated with metal only by chemical plating, and (2) a method in which conductivity is imparted to the resin and then electroplating is performed using the resin as a cathode.

樹脂に直接化学メ゛シキを行う（１）の方法はメッキ速
度が遅く、パラジウム等の貴金属を触媒として使用する
等が必要で生産性が悪くコストも掛ア・るので量産に適
さない。従って量産には（２）の電気メッキ法が採用さ
れる。この電気メッキ法において樹脂に導電性を付与す
るには、（ａ）導電性の物質例えはグラファイト等を樹
脂の表面に塗布する方法や（ｂ）樹脂に薄い金属の化学
メッキを施す方法がある。Method (1), in which the resin is directly chemically coated, has a slow plating speed and requires the use of noble metals such as palladium as a catalyst, resulting in poor productivity and high costs, making it unsuitable for mass production. Therefore, the electroplating method (2) is adopted for mass production. In order to impart conductivity to the resin in this electroplating method, there are two methods: (a) applying a conductive substance such as graphite to the surface of the resin, and (b) applying a thin chemical plating of metal to the resin. .

このような方法で予備的に導電性を付与された樹脂に金
属の電気メッキ行って金属多孔体を製造するが、この予
備的に付与した導電性のみでは非常に導電性が悪く、通
常のメッキのように電極を樹脂に接触させて通電するの
では均一に厚く電気メッキを施すことはできない。従っ
て先ずそれに特殊な方法で一次電気メッキを行って導電
性を高めて後通常の方法で本電気メッキを行う必要があ
る。A metal porous body is produced by electroplating metal on a resin that has been preliminarily given conductivity in this way, but the conductivity is very poor with only this preliminarily given conductivity, and normal plating is not possible. If the electrode is brought into contact with the resin and electricity is applied, it is not possible to apply electroplating uniformly and thickly. Therefore, it is necessary to first perform primary electroplating using a special method to increase conductivity, and then perform main electroplating using a normal method.

このような電気メッキを連続的に行う方法として、例え
ば特公昭５７−８９８１７号、米国特許第４３２６９３
１号に示される第１図、或いは第２図のように、予備的
に導電性を付与した樹脂ｆｌ）（幅広帯状）を先ず回転
する円筒形の金属陰極体（２）（以下回転陰極体という
）に密着接触させ密着部分を電解液（３）の中に浸しつ
つ一次電気メッキを行い樹脂に十分な導電性を与え、次
ぎに槽外給電ロール１ｆｉ）　、　（１’ｉ′）　　　
とメッキ槽ｔ８）　Ｉ　＋８＋　　　の組合せを数段直
列に配列した装置の中を一次電気メッキをした樹脂（５
）を通し、槽外給電ロール（［ｉｊ、（６）から給電し
てメッキ槽（ｇ）　、　（ｓ’ｉ等の中の金属陽極（７
）。As a method for performing such electroplating continuously, for example, Japanese Patent Publication No. 57-89817 and U.S. Patent No. 432693 are known.
As shown in Fig. 1 or Fig. 2 shown in No. 1, a cylindrical metal cathode body (2) (hereinafter referred to as a rotating cathode body) is first rotated through a preliminarily conductive resin (fl) (broad band shape). (1fi), (1'i') are placed in close contact with the resin (1fi), (1'i'), and primary electroplating is performed while the contact part is immersed in the electrolytic solution (3) to give sufficient conductivity to the resin.
and plating tank t8) I +8+ are arranged in series in several stages.
), and the metal anode (7) in the plating tank (g), (s'i, etc.) is
).

（７）等とメッキ液＋ｑ＋　ｒ　＋４）等により通常の
浸漬方法で順次電気メッキを施して厚いメッキ層として
金属多孔体を連続して製造する方法があり、従来はこの
方法が用いられている。この場合に槽外給電方式として
ロール法の他に金属板を接触する方法も用いられるが、
この方法は金属板が樹脂と接触する部分が常に一定の場
所となり接触部にスレ疵が発生する欠点があり好ましく
ないのでロールによるのが通常である。There is a method of successively producing a porous metal body as a thick plating layer by applying electroplating using a normal immersion method using a plating solution such as (7) and plating solution + q + r + 4), etc., and this method has been used conventionally. . In this case, in addition to the roll method, a method of contacting a metal plate is also used as an external power supply method.
In this method, the part where the metal plate comes into contact with the resin is always at a fixed location, which is undesirable because it causes scratches at the contact part, so it is usually done using a roll.

ハ。発明が解決しようとする問題点 従来方法による製造方法では回転陰極体として金属板或
いは金属テープを円筒体の表面に張り付けたものを用い
て三次元網状構造の樹脂に通電している。ところが三次
元網状構造体は液を自由に浸透させるものであり網の骨
格部のみが陰極体に接触するので、メッキ液中で給電す
ると当然のこととして、樹脂表面のみでなく網状構造の
樹脂に接触していない即ち網の空隙部に当たる回転陰極
体の金属表面部分にも電気メッキが生ずる。従って平滑
表面の給電部では箔状の金属メッキが発生する。このメ
ッキ層がある厚み以上になると内部応力が発生して自然
にメッキ層の金属箔が剥がれてくる。そをすると箔状と
なって剥がれた金属メッキが樹脂に付着して樹脂を傷付
けたり本電気メッキが不均一となり製品の品質上重大な
問題となる欠点があった。Ha. Problems to be Solved by the Invention In the conventional manufacturing method, a metal plate or metal tape pasted on the surface of a cylindrical body is used as a rotating cathode body to supply electricity to a resin having a three-dimensional network structure. However, a three-dimensional network structure allows the liquid to permeate freely, and only the skeleton of the network comes into contact with the cathode body. Therefore, when power is supplied in the plating solution, it naturally penetrates not only the resin surface but also the resin in the network structure. Electroplating also occurs on the metal surface portions of the rotating cathode body that are not in contact, ie, that are in the voids of the mesh. Therefore, foil-like metal plating occurs on the smooth surface of the power supply section. When this plating layer becomes thicker than a certain level, internal stress occurs and the metal foil of the plating layer naturally peels off. If this happens, the metal plating that comes off as a foil adheres to the resin and damages the resin, or the electroplating becomes non-uniform, which poses a serious problem in terms of product quality.

二０問題点を解決するための手段 この発明は回転陰極体の表面に従来の金属板或いは金属
テープの代わりに三次元網状構造を有する金属多孔体を
張り付けてこれに通電し、該金属多孔体に導電性を予備
的に付与した樹脂を密着接触させてメッキ液中を通過し
て電気メッキが施されるようにしたことを特徴とするも
ので、従来方法の欠点を解消したものである。さらに回
転陰極体に左右に移動する金鳥製の櫛刃状の治具を接し
て給電部表面をかき取るようにしてより有効に欠点を解
消したものである。20 Means for Solving the Problems This invention provides a method of pasting a metal porous body having a three-dimensional network structure on the surface of a rotating cathode body instead of a conventional metal plate or metal tape, and applying electricity to the metal porous body. This method is characterized in that electroplating is performed by passing through a plating solution in close contact with a resin that has been preliminarily imparted with conductivity, thus eliminating the drawbacks of conventional methods. Furthermore, a comb blade-shaped jig made by Kintori that moves from side to side is brought into contact with the rotating cathode body to scrape off the surface of the power feeding part, thereby more effectively eliminating the drawbacks.

以下−面を参照しながら本発明を説明する。The invention will now be described with reference to the following aspects.

本発明に使用するメッキ装置は第１図に示すような従来
のメッキ装置と同じがあるが、回転陰極体（１０）の表
面吟三次元網状構造体の金属多孔体を張り付けである。The plating apparatus used in the present invention is the same as the conventional plating apparatus shown in FIG. 1, but a metal porous body having a three-dimensional network structure is attached to the surface of the rotating cathode body (10).

予備的に導電性を付与された三次元網状構造体の樹脂（
１）がメッキ液中で回転陰極体に密着して通電され移動
して一次電気メンキされる。A resin with a three-dimensional network structure that has been preliminarily given conductivity (
1) is brought into close contact with a rotating cathode body in a plating solution and is moved by electricity to undergo primary electrical plating.

この場合、回転陰極体の表面に金属多孔体が施着されて
いるので樹脂と同時に金属多孔体にも金属が析出する。In this case, since the metal porous body is attached to the surface of the rotating cathode body, metal is deposited on the metal porous body at the same time as the resin.

しかし本発明では金属多孔体が給電部として用いられて
いるので給電部へのメッキ　　　　　　□は金属多孔体
（三次元網状構造体）の骨格を太らせるのみであり、金
属箔状には生成しない。従つ　　　　　　璽て金属箔と
して剥離することがない。このように本発明の方法によ
れば金属板や金属テープをもちいた場合のように液中で
給電部に電気メンキされた金属箔がはがれて樹脂に付着
し或いは樹脂を傷つけて製品不良が発生することがない
。However, in the present invention, since a metal porous body is used as the power feeding part, plating the power feeding part only thickens the skeleton of the metal porous body (three-dimensional network structure) and does not form a metal foil shape. Therefore, the metal foil will not peel off when wrapped. As described above, according to the method of the present invention, unlike when a metal plate or metal tape is used, the metal foil that has been electroplated on the power supply part in the liquid will peel off and adhere to or damage the resin, resulting in product defects. There's nothing to do.

本発明の方法においても給電部の金員多孔体表面にはメ
ッキにより突起状の金属が成長することがある。このた
め第２図に示すような金属製の櫛刃状の治具（１０）を
第１図に示すように回転陰極体に接してもうけ、第２図
の矢印の左右方向即ち横方向に往復移動して給電部表面
をかき取るようにすると、この金属突起を押し潰すこと
ができる。押し潰しではなく剥がれた金属粒は小量であ
り普通は無害であるがメッキ槽内にもうけた受は皿に受
けると良いし又磁性金属の時はマグネットにより取り去
っても良い。このようにすると給電部の金属箔（粒）の
剥離による製品不良をより完全に防止することができる
。Even in the method of the present invention, metal protrusions may grow on the surface of the metal porous body of the power feeding section due to plating. For this purpose, a metal comb-shaped jig (10) as shown in Fig. 2 is placed in contact with the rotating cathode body as shown in Fig. 1, and is reciprocated in the left-right direction of the arrow in Fig. If you move and scrape the surface of the power supply part, you can crush this metal protrusion. The metal particles that are peeled off rather than crushed are small and usually harmless, but it is best to catch them in a plate in the plating tank, or if they are magnetic metals, they can be removed with a magnet. In this way, it is possible to more completely prevent product defects due to peeling of the metal foil (granules) of the power feeding section.

ホ６発明の効果 以上に詳しく説明したように本発明は予備でき導電性を
付与した樹脂にメッキ液中で回転陰極体に密着しながら
一次金属メッキを施す際に、回転陰極体の表面に三次元
網状構造の金属多孔体を張り付けて行うもので、−次金
属メッキの際に回転陰極体の給電部に金属箔が発生する
ことがない。E 6 Effects of the Invention As explained in detail above, the present invention provides a method for applying a tertiary metal plating to the surface of the rotating cathode body when primary metal plating is applied to the resin which has been preliminarily imparted with conductivity while being in close contact with the rotating cathode body in a plating solution. This is done by pasting a metal porous body with an original network structure, so that metal foil will not be generated on the power supply part of the rotating cathode body during negative metal plating.

従って従来の方法に比し剥離した金属箔が製品に付着し
たり、製品に傷を付けたりすることがなく製品歩留りを
向上することができる有効な方法である。Therefore, compared to conventional methods, this is an effective method that can improve product yield without causing peeled metal foil to adhere to or damage products.

さらに金属製の櫛刃状治具を回転陰極体表面に接して左
右に移動して金属多孔体の表面に発生する金属突起をか
き取るようにするとさらに有効である。Furthermore, it is more effective to scrape off metal protrusions generated on the surface of the metal porous body by moving a metal comb-shaped jig from side to side in contact with the surface of the rotating cathode body.

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

第１図は金属多孔体を連続的に製造する装置を示す正面
断面図である。第２図は本発明に使用する金属製櫛刃状
治具の平面図である。 １＋）・・・予備的に導電性を付与した樹脂、（２）・
・・回転陰極体、　　＋３＋　、　＋９＋　、　＋９′
＋・・メッキ液、［４１、＋８＋　、　ｆ８）・メッキ
槽、（５）・−成型気メッキされた樹脂、 ＋６１１　＋６１・槽外給電ロール、 ＋７）　＋　＋７１・・・陽極、　　　（１０）・・金
属製櫛刃状治具。FIG. 1 is a front sectional view showing an apparatus for continuously manufacturing porous metal bodies. FIG. 2 is a plan view of a metal comb-shaped jig used in the present invention. 1+)...Resin that has been preliminarily imparted with conductivity, (2)...
・・Rotating cathode body, +3+ , +9+ , +9′
+...Plating solution, [41, +8+, f8)・Plating tank, (5)・-Molded plating resin, +611 +61・Outside tank power supply roll, +7) + +71・Anode, (10)・・Metal comb blade jig.

Claims (1)

【特許請求の範囲】 １、導電性を付与した樹脂に電気メッキを施して金属多
孔体を連続的に製造する方法において、金属多孔体を表
面に施着した回転陰極体に導電性を付与した樹脂を密着
して通電し、メッキ液中で一次電気メッキを施したのち
通常の方法で本電気メッキを行うことを特徴とする金属
多孔体の製造方法 ２、回転陰極体の表面に施着した金属多孔体の表面に金
属製櫛刃状治具を横方向に移動しながら接触させて、金
属多孔体表面にメッキにより発生する金属突起を押し潰
すか或いはかき取るようにして行うことを特徴とする特
許請求の範囲第１項記載の金属多孔体の製造方法[Scope of Claims] 1. In a method for continuously manufacturing a porous metal body by electroplating a conductive resin, conductivity is imparted to a rotating cathode body having a porous metal body applied to the surface. Method 2 for producing a metal porous body characterized by applying electricity while adhering the resin, performing primary electroplating in a plating solution, and then performing main electroplating in a normal manner, the method being applied to the surface of a rotating cathode body. The method is characterized in that a metal comb-shaped jig is brought into contact with the surface of the porous metal body while moving laterally, so as to crush or scrape off metal protrusions generated by plating on the surface of the porous metal body. A method for manufacturing a porous metal body according to claim 1