JP3170956B2 - Surface adjustment method of electrolytic copper foil - Google Patents
Surface adjustment method of electrolytic copper foilInfo
- Publication number
- JP3170956B2 JP3170956B2 JP14001493A JP14001493A JP3170956B2 JP 3170956 B2 JP3170956 B2 JP 3170956B2 JP 14001493 A JP14001493 A JP 14001493A JP 14001493 A JP14001493 A JP 14001493A JP 3170956 B2 JP3170956 B2 JP 3170956B2
- Authority
- JP
- Japan
- Prior art keywords
- copper foil
- electrolytic copper
- roll
- thickness
- synthetic resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/38—Improvement of the adhesion between the insulating substrate and the metal
- H05K3/382—Improvement of the adhesion between the insulating substrate and the metal by special treatment of the metal
Landscapes
- Electroplating Methods And Accessories (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電解銅箔と合成樹脂製
フィルム等とを高剥離強度で貼合することができるよう
にするために、電解銅箔の粗面を調整する方法に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for adjusting a rough surface of an electrolytic copper foil so that the electrolytic copper foil can be bonded to a synthetic resin film or the like with high peel strength. It is.
【０００２】[0002]
【従来の技術】電解銅箔は、銅の電解液中に浸漬した金
属ドラム表面に、電解液中の銅を析出させて得られるも
のである。従って、この電解銅箔は、金属ドラム表面に
接していた面が比較的平滑な面になり、金属ドラム表面
に接していなかった面が比較的粗な面となるものであ
る。なお、電解銅箔の比較的平滑な面のことは、一般的
にシャイニー面と呼ばれ、比較的粗な面のことは、一般
的にマット面と呼ばれている。2. Description of the Related Art An electrolytic copper foil is obtained by depositing copper in an electrolytic solution on the surface of a metal drum immersed in an electrolytic solution of copper. Therefore, in this electrolytic copper foil, the surface in contact with the metal drum surface becomes a relatively smooth surface, and the surface not in contact with the metal drum surface becomes a relatively rough surface. The relatively smooth surface of the electrolytic copper foil is generally called a shiny surface, and the relatively rough surface is generally called a matte surface.
【０００３】電解銅箔のマット面は、粗面となっている
ため、水濡れ性が良好である。このため、電解銅箔のマ
ット面に、接着剤溶液を塗布すると、全体に均一に接着
剤溶液を塗布しうるという利点がある。従って、電解銅
箔と合成樹脂製フィルム等とを、接着剤溶液を使用して
貼合した場合、高剥離強度を示し、好ましいものであ
る。これに対し、銅鋳塊に圧延を繰り返して得られた圧
延銅箔は、繰り返し圧延のために、その表面が平滑とな
っており、水濡れ性が悪い。従って、接着剤溶液を使用
して、圧延銅箔と合成樹脂製フィルム等を貼合しても、
高剥離強度を示さないのである。Since the matte surface of the electrolytic copper foil is rough, the wettability is good. For this reason, when the adhesive solution is applied to the mat surface of the electrolytic copper foil, there is an advantage that the adhesive solution can be uniformly applied to the entire surface. Therefore, when an electrolytic copper foil and a synthetic resin film or the like are bonded together using an adhesive solution, high peel strength is exhibited, which is preferable. On the other hand, a rolled copper foil obtained by repeatedly rolling a copper ingot has a smooth surface due to repeated rolling, and has poor water wettability. Therefore, even if the rolled copper foil and the synthetic resin film and the like are bonded using the adhesive solution,
It does not exhibit high peel strength.
【０００４】近年、接着剤溶液を使用しないで、熱圧着
によって、合成樹脂製フィルムと電解銅箔とを貼合する
ことが行なわれている。即ち、合成樹脂製フィルムの表
面を軟化若しくは溶融させて、それを電解銅箔のマット
面と圧着させ、その後、合成樹脂製フィルム表面を固化
させることによって、合成樹脂製フィルムと電解銅箔と
を貼合することが行なわれている。しかしながら、この
場合、接着剤溶液を使用したときのように、必ずしも高
剥離強度を示さないということがあった。また、圧延銅
箔を使用した場合においても、圧延銅箔の表面は水濡れ
性が悪いため、軟化若しくは溶融した合成樹脂製フィル
ム表面との親和性が悪く、密着させて貼合できないとい
う憾みがあった。従って、圧延銅箔を使用しても、同様
に高剥離強度を示す貼合物を得ることができなかった。[0004] In recent years, a synthetic resin film and an electrolytic copper foil have been bonded together by thermocompression bonding without using an adhesive solution. That is, the surface of the synthetic resin film is softened or melted, and it is pressed against the matte surface of the electrolytic copper foil, and then, by solidifying the synthetic resin film surface, the synthetic resin film and the electrolytic copper foil are combined. Lamination is being performed. However, in this case, as in the case where an adhesive solution is used, there is a case where high peel strength is not necessarily exhibited. Also, when using rolled copper foil, the surface of the rolled copper foil has poor water wettability, so it has poor affinity with the softened or molten synthetic resin film surface, and it is regrettable that it cannot be adhered and bonded. there were. Therefore, even when a rolled copper foil was used, it was not possible to obtain a bonded product similarly exhibiting high peel strength.
【０００５】[0005]
【発明が解決しようとする課題】本発明者は、電解銅箔
と合成樹脂製フィルムとを熱圧着によって貼合した場
合、何故、高剥離強度を持つ貼合物が得られないのかを
検討した。その結果、電解銅箔のマット面は、凹凸が激
しく、凹部において合成樹脂製フィルムと密着していな
いことが判明した。SUMMARY OF THE INVENTION The present inventor has studied why a bonded product having high peel strength cannot be obtained when an electrolytic copper foil and a synthetic resin film are bonded by thermocompression bonding. . As a result, it was found that the matte surface of the electrolytic copper foil had severe irregularities and did not adhere to the synthetic resin film in the concave portions.
【０００６】そこで、本発明は、電解銅箔の良好な水濡
れ性を維持したまま、電解銅箔のマット面の凹凸を少な
くすることによって、電解銅箔のマット面と合成樹脂製
フィルムとを熱圧着によって貼合した場合、この貼合物
の剥離強度を高めようとするものである。Therefore, the present invention reduces the unevenness of the matte surface of the electrolytic copper foil while maintaining the good water wettability of the electrolytic copper foil, thereby making the matte surface of the electrolytic copper foil and the synthetic resin film compatible. When bonded by thermocompression bonding, it is intended to increase the peel strength of the bonded product.
【０００７】[0007]
【課題を解決するための手段】即ち、本発明は、電解銅
箔の粗面に、ロール表面粗さ（Ｒａ）が0.4〜1μｍのロ
ールを押圧して、該電解銅箔の厚みを45〜85％減少させ
ることができる圧力を付与することを特徴とする電解銅
箔の表面調整方法に関するものである。That is, according to the present invention, a roll having a surface roughness (Ra) of 0.4 to 1 [mu] m is pressed against a rough surface of an electrolytic copper foil to reduce the thickness of the electrolytic copper foil to 45 to 1 [mu] m. The present invention relates to a method for adjusting the surface of an electrolytic copper foil, which comprises applying a pressure capable of reducing the amount by 85%.
【０００８】本発明において使用する電解銅箔は、従来
公知の方法によって得られる電解銅箔である。即ち、金
属ドラム表面に電解液中の銅を析出堆積させ、その後析
出した銅箔を金属ドラム表面から剥離して得られるもの
である。使用する電解銅箔の厚みは任意であるが、一般
的には18〜70μｍの厚みのものを使用するのが好まし
い。The electrolytic copper foil used in the present invention is an electrolytic copper foil obtained by a conventionally known method. That is, it is obtained by depositing and depositing copper in the electrolytic solution on the surface of the metal drum, and then separating the deposited copper foil from the surface of the metal drum. Although the thickness of the electrolytic copper foil to be used is arbitrary, it is generally preferable to use one having a thickness of 18 to 70 μm.
【０００９】この電解銅箔は、金属ドラム表面に接して
いた面が比較的平滑なシャイニー面であり、一方、金属
ドラム表面に接していない面が比較的粗なマット面とな
っている。本発明においては、このマット面（粗面）
に、ロール表面粗さ（Ｒａ）が0.4〜1μｍのロールを押
圧する。ロール表面粗さ（Ｒａ）が0.4μｍ未満のロー
ルを押圧すると、電解銅箔の粗面が平滑になりすぎて、
水濡れ性が悪くなるので、好ましくない。水濡れ性が悪
くなると、合成樹脂製フィルムと熱圧着した場合、軟化
若しくは溶融した合成樹脂製フィルム表面との親和性が
低下し、高剥離強度を示す貼合物が得られなくなるの
で、好ましくないのである。逆に、ロール表面粗さ（Ｒ
ａ）が1μｍを超えるロールを押圧すると、電解銅箔の
粗面の凹凸を少なくすることができないので、好ましく
ない。電解銅箔の粗面の凹凸が激しいと、合成樹脂製フ
ィルムと熱圧着した場合、凹部と合成樹脂製フィルム表
面とが密着せず、高剥離強度を示す貼合物が得られなく
なるので、好ましくないのである。In this electrolytic copper foil, the surface in contact with the metal drum surface is a relatively smooth shiny surface, while the surface not in contact with the metal drum surface is a relatively rough mat surface. In the present invention, the mat surface (rough surface)
Then, a roll having a roll surface roughness (Ra) of 0.4 to 1 μm is pressed. When a roll having a roll surface roughness (Ra) of less than 0.4 μm is pressed, the rough surface of the electrolytic copper foil becomes too smooth,
It is not preferable because the water wettability deteriorates. Poor water wettability, when thermocompression bonding with a synthetic resin film, the affinity for the softened or melted synthetic resin film surface is reduced, and a bonded product having high peel strength cannot be obtained, which is not preferable. It is. Conversely, the roll surface roughness (R
Pressing a roll having a) of more than 1 μm is not preferable because unevenness on the rough surface of the electrolytic copper foil cannot be reduced. When the unevenness of the rough surface of the electrolytic copper foil is severe, when thermocompression bonding is performed with the synthetic resin film, the concave portion and the synthetic resin film surface do not adhere to each other, and a bonded product having high peel strength cannot be obtained. There is no.
【００１０】また、このロールによる押圧は、電解銅箔
の厚みを45〜85％減少させることができる圧力を付与す
ることによって行なう。電解銅箔の厚みの減少（％）
は、当初の電解銅箔の厚みをｔ0とし、最終の電解銅箔
の厚みをｔ1とした場合、［（ｔ0−ｔ1）／ｔ0］×100
で算出されるものである。電解銅箔の厚みの減少が45％
未満であると、電解銅箔の粗面に付与される圧力が十分
でなく、粗面の凹凸が少なくならないので、好ましくな
い。逆に、電解銅箔の厚みの減少が85％を超えると、電
解銅箔の粗面に付与される圧力が高くなりすぎて、粗面
が平滑になりすぎて、水濡れ性が悪くなるので、好まし
くない。なお、ロールによる押圧は、一回だけであって
も良いし、二回以上の複数回であっても良い。The pressing by the roll is performed by applying a pressure capable of reducing the thickness of the electrolytic copper foil by 45 to 85%. Reduction in thickness of electrolytic copper foil (%)
It is the thickness of the original electrolytic copper foil and t 0, when the thickness of the final electrolytic copper foil was t 1, [(t 0 -t 1) / t 0] × 100
Is calculated. 45% reduction in thickness of electrolytic copper foil
If it is less than this, the pressure applied to the rough surface of the electrodeposited copper foil is not sufficient, and the unevenness of the rough surface is not reduced. Conversely, if the reduction in the thickness of the electrolytic copper foil exceeds 85%, the pressure applied to the rough surface of the electrolytic copper foil becomes too high, the rough surface becomes too smooth, and the water wettability deteriorates. Is not preferred. The pressing by the roll may be performed only once, or may be performed two or more times.
【００１１】また、ロールによる押圧は、一枚の電解銅
箔を使用して行なっても良いし、二枚上の電解銅箔を重
ね合わせて行なっても良い。後者の場合には、二枚の電
解銅箔のシャイニー面同士を重ね合わせる。従って、こ
の重ね合わせた積層物の表裏面は、いずれもマット面
（粗面）となっている。そして、この積層物に、表裏面
を前記したロールによって押圧し、厚みを所定量減少さ
せて、電解銅箔の粗面を調整するのである。The pressing by the roll may be performed by using one electrolytic copper foil, or may be performed by overlapping two electrolytic copper foils. In the latter case, the shiny surfaces of the two electrolytic copper foils are overlapped. Therefore, both the front and back surfaces of the laminated product are mat surfaces (rough surfaces). Then, the front and back surfaces of the laminate are pressed by the above-mentioned rolls to reduce the thickness by a predetermined amount, thereby adjusting the rough surface of the electrolytic copper foil.
【００１２】以上のようにして粗面が調整された電解銅
箔は、その粗面がポリエチレンフィルム，ポリプロピレ
ンフィルム，ポリエステルフィルム等の合成樹脂製フィ
ルムと当接するようにして貼合するのが好ましい。この
貼合は、合成樹脂製フィルムの当接面を軟化若しくは溶
融して行なう熱圧着の手段を採用するのが好ましい。ま
た、本発明に係る方法で粗面が調整された電解銅箔は、
未だ十分な水濡れ性を維持しているため、粗面に接着剤
溶液を塗布して、合成樹脂製フィルムと貼合してもよ
い。The electrodeposited copper foil having a roughened surface as described above is preferably bonded so that the roughened surface is in contact with a synthetic resin film such as a polyethylene film, a polypropylene film or a polyester film. For this bonding, it is preferable to employ a means of thermocompression bonding performed by softening or melting the contact surface of the synthetic resin film. Further, the electrolytic copper foil having a rough surface adjusted by the method according to the present invention,
Since sufficient water wettability is still maintained, an adhesive solution may be applied to the rough surface and bonded to a synthetic resin film.
【００１３】[0013]
実施例１ 厚さ35μｍの電解銅箔を準備する。この電解銅箔の粗面
に、ロール表面粗さ（Ｒａ）が0.5μｍのロールを押圧
し、電解銅箔の厚さを28μｍとした。更に、このロール
を電解銅箔の粗面に押圧して、電解銅箔の厚さを25μｍ
とし、続けて21μｍとし、更に続けて18μｍとした。従
って、ロールによる押圧は四回行ない、電解銅箔の厚み
の減少は49％であった。このようにして粗面を調整した
電解銅箔の引張強さ、伸び及び粗面の濡れ指数を測定し
た結果を表１に示した。なお、濡れ指数は、JIS K 6768
「ポリエチレン及びポリプロピレンの濡れ試験方法」に
よって測定したものである。また、以下のようにして剥
離強度を測定し、表１に示した。即ち、粗面を調整した
電解銅箔を二枚準備し、一枚の電線被覆用導電性フィル
ム（厚さ50μｍのポリエチレンフィルム）の表面及び裏
面に、各々の粗面がフィルムに当接するようにして積層
した。その後、この積層体を、加熱温度150℃，圧力2kg
／cm2，時間5秒の条件で熱圧着して貼合物を得た。この
貼合物を、引張試験機を用いて、剥離角度180℃で剥離
して、剥離強度を測定した。Example 1 An electrolytic copper foil having a thickness of 35 μm was prepared. A roll having a roll surface roughness (Ra) of 0.5 μm was pressed against the rough surface of the electrolytic copper foil to make the thickness of the electrolytic copper foil 28 μm. Further, the roll is pressed against the rough surface of the electrolytic copper foil to reduce the thickness of the electrolytic copper foil to 25 μm.
The thickness was continuously set to 21 μm, and further continuously set to 18 μm. Therefore, pressing by a roll was performed four times, and the reduction in the thickness of the electrolytic copper foil was 49%. Table 1 shows the results of measuring the tensile strength, the elongation, and the wetting index of the rough surface of the electrolytic copper foil whose rough surface was adjusted in this manner. The wetting index is JIS K 6768
It is measured by the "wetting test method for polyethylene and polypropylene". Further, the peel strength was measured as described below, and is shown in Table 1. That is, two sheets of electrolytic copper foil having a roughened surface are prepared, and each roughened surface is brought into contact with the surface and the back surface of one conductive film for covering electric wires (a polyethylene film having a thickness of 50 μm). And laminated. Thereafter, the laminate is heated at a heating temperature of 150 ° C. and a pressure of 2 kg.
The bonded product was obtained by thermocompression bonding under the conditions of / cm 2 and time of 5 seconds. The bonded product was peeled at a peel angle of 180 ° C. using a tensile tester, and the peel strength was measured.
【００１４】比較例１ 電解銅箔の厚みが25μｍになった時点で、ロールによる
押圧を終えた以外は、実施例１と同様にして電解銅箔の
粗面を調整した。従って、ロールによる押圧は二回行な
い、電解銅箔の厚みの減少は29％であった。そして、実
施例１と同様にして各物性値等を測定し、その結果を表
１に示した。Comparative Example 1 The rough surface of the electrolytic copper foil was adjusted in the same manner as in Example 1 except that the pressing by the roll was completed when the thickness of the electrolytic copper foil became 25 μm. Therefore, pressing with a roll was performed twice, and the reduction in the thickness of the electrolytic copper foil was 29%. Each physical property value was measured in the same manner as in Example 1. The results are shown in Table 1.
【００１５】比較例２ 実施例１におけるロールによる押圧を終えた後、更に、
このロールによる押圧を五回繰り返し、電解銅箔の厚み
を4.5μｍにした。従って、ロールによる押圧は九回行
ない、電解銅箔の厚みの減少は87％であった。そして、
実施例１と同様にして各物性値等を測定し、その結果を
表１に示した。Comparative Example 2 After the pressing by the roll in Example 1 was completed,
The pressing by the roll was repeated five times to make the thickness of the electrolytic copper foil 4.5 μm. Therefore, the roll was pressed nine times, and the reduction in the thickness of the electrolytic copper foil was 87%. And
Physical properties were measured in the same manner as in Example 1. The results are shown in Table 1.
【００１６】比較例３ 銅鋳塊に繰り返し圧延を施して、厚み18μｍの圧延銅箔
を得た。この圧延銅箔を使用して、実施例１と同様に、
各物性値等を測定し、その結果を表１に示した。Comparative Example 3 A copper ingot was repeatedly rolled to obtain a rolled copper foil having a thickness of 18 μm. Using this rolled copper foil, as in Example 1,
Each physical property value was measured, and the results are shown in Table 1.
【００１７】比較例４ 厚さ18μｍの電解銅箔を準備し、この電解銅箔にロール
による押圧を全く行なわないで、実施例１と同様に、各
物性値等を測定し、その結果を表１に示した。Comparative Example 4 An electrolytic copper foil having a thickness of 18 μm was prepared, and the physical properties were measured in the same manner as in Example 1 except that the electrolytic copper foil was not pressed by a roll at all. 1 is shown.
【００１８】実施例２ ロールの表面粗さ（Ｒａ）を0.8μｍにした以外は、実
施例１と同様にして電解銅箔の粗面を調整した。そし
て、実施例１と同様にして各物性値等を測定し、その結
果を表１に示した。Example 2 The roughened surface of the electrolytic copper foil was adjusted in the same manner as in Example 1 except that the surface roughness (Ra) of the roll was changed to 0.8 μm. Each physical property value was measured in the same manner as in Example 1. The results are shown in Table 1.
【００１９】比較例５ ロールの表面粗さ（Ｒａ）を0.1μｍにした以外は、実
施例１と同様にして電解銅箔の粗面を調整した。そし
て、実施例１と同様にして各物性値等を測定し、その結
果を表１に示した。Comparative Example 5 The roughened surface of the electrolytic copper foil was adjusted in the same manner as in Example 1 except that the surface roughness (Ra) of the roll was changed to 0.1 μm. Each physical property value was measured in the same manner as in Example 1. The results are shown in Table 1.
【００２０】実施例３ 実施例１におけるロールによる押圧を終えた後、更に、
このロールによる押圧を三回繰り返し、電解銅箔の厚み
を9μｍにした。従って、ロールによる押圧は七回行な
い、電解銅箔の厚みの減少は74％であった。そして、実
施例１と同様にして各物性値等を測定し、その結果を表
１に示した。Example 3 After the pressing by the roll in Example 1 is completed,
The pressing by the roll was repeated three times to make the thickness of the electrolytic copper foil 9 μm. Therefore, pressing with a roll was performed seven times, and the reduction in the thickness of the electrolytic copper foil was 74%. Each physical property value was measured in the same manner as in Example 1. The results are shown in Table 1.
【００２１】[0021]
【表１】 [Table 1]
【００２２】実施例１〜３に係る方法で粗面を調整した
電解銅箔は、濡れ指数も40以上と良好で、また剥離強度
も高いものである。これに対し、比較例１は、ロールの
押圧による圧力が不足しており、粗面の凹凸が未だ激し
いもので、高剥離強度が得られないものである。比較例
２は、ロールの押圧による圧力が高すぎて、粗面が平滑
になりすぎている。従って、水濡れ性も悪く、剥離強度
も低いものである。比較例３は、実施例１に係る粗面を
調整した後の電解銅箔と同様の厚みを持つ圧延銅箔であ
り、表面が平滑すぎて、水濡れ性も悪く、また剥離強度
も低いものである。比較例４は、実施例１に係る粗面を
調整した後の電解銅箔と同様の厚みを持つ粗面を調整し
ていない電解銅箔であり、粗面の凹凸が激しすぎて、剥
離強度の低いものである。比較例５は、表面粗さ（Ｒ
ａ）が0.1μｍのロールで粗面を調整したもので、粗面
が平滑すぎて、水濡れ性が悪く、また剥離強度も低いも
のである。The electrolytic copper foils whose rough surfaces have been adjusted by the methods according to Examples 1 to 3 have a good wetting index of 40 or more and high peel strength. On the other hand, in Comparative Example 1, the pressure due to the pressing of the roll was insufficient, the roughness of the rough surface was still severe, and high peel strength was not obtained. In Comparative Example 2, the pressure due to the roll pressing was too high, and the rough surface was too smooth. Therefore, it has poor water wettability and low peel strength. Comparative Example 3 is a rolled copper foil having a thickness similar to that of the electrolytic copper foil after the roughened surface according to Example 1, and has a surface that is too smooth, has poor water wettability, and has a low peel strength. It is. Comparative Example 4 is an electrolytic copper foil having a thickness similar to that of the electrolytic copper foil after adjusting the rough surface according to Example 1 and having a rough surface that is not adjusted. It has low strength. In Comparative Example 5, the surface roughness (R
In a), the rough surface was adjusted with a roll of 0.1 μm, and the rough surface was too smooth, the water wettability was poor, and the peel strength was low.
【００２３】[0023]
【作用及び発明の効果】以上説明したように、本発明に
係る方法で、電解銅箔の粗面を調整すれば、粗面の水濡
れ性を良好に維持したまま、粗面の凹凸状態を少なくす
ることができる。従って、合成樹脂製フィルムと本発明
に係る方法で粗面が調整された電解銅箔とを、粗面が合
成樹脂製フィルムと当接するようにして、熱圧着等によ
って貼合すれば、表面が軟化若しくは溶融した合成樹脂
製フィルムと電解銅箔との親和性が良好で、且つ粗面の
凹部の深さが浅くなっているため、合成樹脂製フィルム
と電解銅箔との密着性も良好となり、依って高剥離強度
の貼合物が得られるという効果を奏するものである。な
お、合成樹脂製フィルムと電解銅箔との貼合物は、フレ
キシブルプリント配線板（ＦＰＣ），電池極板，ワイヤ
ーハーネス，シールド用材料等の各種用途に使用される
ものである。As described above, when the roughened surface of the electrolytic copper foil is adjusted by the method according to the present invention, the unevenness of the roughened surface can be maintained while the water wettability of the roughened surface is maintained well. Can be reduced. Therefore, if the synthetic resin film and the electrolytic copper foil whose rough surface has been adjusted by the method according to the present invention are bonded by thermocompression bonding or the like so that the rough surface is in contact with the synthetic resin film, the surface becomes The affinity between the softened or melted synthetic resin film and the electrolytic copper foil is good, and the depth of the concave part on the rough surface is small, so the adhesion between the synthetic resin film and the electrolytic copper foil is also good. Accordingly, an effect that a bonded product having a high peel strength is obtained can be obtained. The bonded product of the synthetic resin film and the electrolytic copper foil is used for various uses such as a flexible printed wiring board (FPC), a battery electrode plate, a wire harness, and a shielding material.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭63−17597（ＪＰ，Ａ) 特開 平３−68795（ＪＰ，Ａ) 特開 平４−202796（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C25D 1/04 C25D 5/48 H05K 3/38 H05K 1/09 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-17597 (JP, A) JP-A-3-68795 (JP, A) JP-A-4-202796 (JP, A) (58) Investigation Field (Int.Cl. 7 , DB name) C25D 1/04 C25D 5/48 H05K 3/38 H05K 1/09
Claims (2)
ａ）が0.4〜1μｍのロールを押圧して、該電解銅箔の厚
みを45〜85％減少させることができる圧力を付与するこ
とを特徴とする電解銅箔の表面調整方法。1. A roll surface roughness (R) is formed on a rough surface of an electrolytic copper foil.
a) A method for adjusting the surface of an electrolytic copper foil, comprising pressing a roll having a thickness of 0.4 to 1 μm to apply a pressure capable of reducing the thickness of the electrolytic copper foil by 45 to 85%.
載の電解銅箔の表面調整方法。2. The method for adjusting the surface of an electrolytic copper foil according to claim 1, wherein the pressing of the roll is performed a plurality of times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14001493A JP3170956B2 (en) | 1993-05-19 | 1993-05-19 | Surface adjustment method of electrolytic copper foil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14001493A JP3170956B2 (en) | 1993-05-19 | 1993-05-19 | Surface adjustment method of electrolytic copper foil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06330379A JPH06330379A (en) | 1994-11-29 |
| JP3170956B2 true JP3170956B2 (en) | 2001-05-28 |
Family
ID=15258932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14001493A Expired - Fee Related JP3170956B2 (en) | 1993-05-19 | 1993-05-19 | Surface adjustment method of electrolytic copper foil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3170956B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4624015B2 (en) * | 2003-06-27 | 2011-02-02 | 京セラ株式会社 | Metal plating film forming method and electronic component manufacturing method |
| JP4518847B2 (en) * | 2003-06-27 | 2010-08-04 | 京セラ株式会社 | Manufacturing method of electronic parts |
| CN109778246B (en) * | 2019-02-22 | 2021-09-03 | 圣达电气有限公司 | Electrolytic copper foil manufacturing equipment |
| CN113026061B (en) * | 2021-03-02 | 2022-02-08 | 赣州逸豪新材料股份有限公司 | Continuous discharging foil-generating device for copper foil processing and processing method thereof |
-
1993
- 1993-05-19 JP JP14001493A patent/JP3170956B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06330379A (en) | 1994-11-29 |
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