JPH0473144A - Manufacture of metal foil clad laminated sheet - Google Patents

Manufacture of metal foil clad laminated sheet

Info

Publication number
JPH0473144A
JPH0473144A JP2186129A JP18612990A JPH0473144A JP H0473144 A JPH0473144 A JP H0473144A JP 2186129 A JP2186129 A JP 2186129A JP 18612990 A JP18612990 A JP 18612990A JP H0473144 A JPH0473144 A JP H0473144A
Authority
JP
Japan
Prior art keywords
prepreg
resin
laminate
metal foil
belts
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
JP2186129A
Other languages
Japanese (ja)
Inventor
Kikuo Kimura
木村 規久男
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP2186129A priority Critical patent/JPH0473144A/en
Publication of JPH0473144A publication Critical patent/JPH0473144A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/02Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
    • H05K3/022Processes for manufacturing precursors of printed circuits, i.e. copper-clad substrates

Landscapes

  • Laminated Bodies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

PURPOSE:To prevent the adhesion of a resin to steel belts by continuously supplying cover sheets covering both end surfaces in the longitudinal direction of the laminate heated and pressed between upper and lower belts to the space between the upper and lower belts so as to extend between the metal foils applied to the upper and lower surfaces of the sheet. CONSTITUTION:A laminate 3 wherein metal foils 3 are superposed on the upper and lower lower surfaces of a prepreg 1 is heated by dielectric heating to bring the resin in the prepreg 1 to a molten state and subsequently introduced into the space between a pair of upper and lower belts 4. Since pressure heating devices 8 such as hot plates are arranged inside the belts 4, the laminate 3 is heated and pressed not only to cure the resin (a) of the prepreg 1 but also to integrally laminate and bond the prepreg 1 and the metal foil 2. When the prepreg 1 is heated by dielectric heating to melt the resin, gas is generated by the melting of the resin (a) or the molten resin (a) flows laterally but, since cover sheets 5 are provided to the end parts of the laminate 3 and said end parts are covered with the cover sheets 5, the resin (a) molten to flow laterally flows out from the end parts of the metal foils 2 to be stopped by the cover sheets 5 without being bonded to the belts 4.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明はプリント配線板として用いられる金属箔張り積
層板を連続的に製造する金属箔張り積層板の製法に関す
るものである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a metal foil-clad laminate for continuous production of a metal foil-clad laminate used as a printed wiring board.

[従来の技術] 従来、金属箔張り積層板はプリプレグの表面に金属箔を
積層接着することによって形成されるものであり、プリ
プレグと金属箔との積層接着一体止は、例えば片面また
は両面に金属箔が配置されたプリプレグを高周波印荷用
電極間に通し、無圧下または接触圧下て誘電加熱するこ
とにより、フ゛リプレグに含浸された樹脂を加熱して熔
融状態にし、ドラムによって駆動されるベルト間に通し
て加圧加熱し、加圧加熱装置によってプリプレグの樹脂
を硬化させることでプリプレグと金属箔と3積層接着一
体化させるものである。
[Prior Art] Conventionally, metal foil-clad laminates are formed by laminating and bonding metal foil on the surface of prepreg, and the lamination and bonding of prepreg and metal foil can be achieved by, for example, bonding metal foil on one or both sides. The prepreg on which the foil is placed is passed between high-frequency loading electrodes and dielectrically heated under no pressure or contact pressure to heat the resin impregnated into the prepreg and melt it, which is then passed between the belts driven by the drum. The resin of the prepreg is cured using a pressure/heating device, thereby bonding and bonding the three layers of the prepreg and metal foil together.

[発明が解決しようとする課題C しかしながら、誘電加熱によって樹脂と熔融させると、
熔融した樹脂がスチールベルトのようなベルト表面に流
れ出て付着する二とがあり、このように熔融した樹脂が
ベルトに付着して硬化すると連続的に製造される金属箔
張り積層板の金属箔表面に凹凸が形成されることとなり
、表面に凹凸が形成された表面品質の悪い金属箔張り積
層板が製造されるという問題があった。
[Problem to be solved by the invention C. However, when melted with resin by dielectric heating,
The molten resin flows out and adheres to the surface of a belt such as a steel belt, and when the molten resin adheres to the belt and hardens, it becomes the metal foil surface of a metal foil-clad laminate that is continuously manufactured. There was a problem in that a metal foil-clad laminate with poor surface quality and having unevenness formed on the surface was manufactured.

本発明は上記問題点を解決しようとするものであり、そ
の目的とするところは、スチーlレベlレトに樹脂が付
着するのを防止することができ、表面品質のよい積層板
を製造することができる金属箔張り積層板の製法を提供
するにある。
The present invention is intended to solve the above-mentioned problems, and its purpose is to manufacture a laminate with good surface quality and which can prevent resin from adhering to the steel plate. The purpose of the present invention is to provide a method for manufacturing a metal foil-clad laminate that allows for the production of metal foil-clad laminates.

[課題を解決するための手段] 上記目的を達成するために、本発明における金属箔張り
積層板の製法は、長尺のプリプレグ1を連続的に送りつ
つその両外面に長尺の金属箔2を重ね、このプリプレグ
1の両外面に金属箔2を重ねた積層物3を上下のベルト
4間に連続して送り込むことによって上下のベルト4間
で加熱加圧を行って金属箔張り積層板を得るにあたって
、上下のベルト4間で加熱加圧される積層物3の長手方
向の両端面を覆う被覆シート5を上下に添設された金属
箔2間にわたるように上下のベルト4間に連続的に供給
して成るものである。
[Means for Solving the Problems] In order to achieve the above object, the method for manufacturing a metal foil-clad laminate according to the present invention is such that a long prepreg 1 is continuously fed and a long metal foil 2 is coated on both outer surfaces of the prepreg 1. A laminate 3 in which metal foils 2 are layered on both outer surfaces of the prepreg 1 is continuously fed between the upper and lower belts 4, and heat and pressure are applied between the upper and lower belts 4 to form a metal foil-covered laminate. In order to obtain the product, a covering sheet 5 covering both longitudinal end surfaces of the laminate 3 heated and pressed between the upper and lower belts 4 is continuously placed between the upper and lower belts 4 so as to cover between the metal foils 2 attached above and below. It is made by supplying.

[作用] 積層物3の長手方向の端部は被覆シート5によって覆わ
れていることにより、積層物3の加熱加圧時に積層物3
の端部より流出する熔融した樹脂aがベルト4の表面に
付着して硬化するようなことがない。
[Function] Since the longitudinal ends of the laminate 3 are covered with the covering sheet 5, the laminate 3 is heated and pressurized.
The molten resin a flowing out from the end of the belt 4 does not adhere to the surface of the belt 4 and harden.

[実施例] 以下、本発明を図示された実施例に基づいて詳述する。[Example] Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

銅箔等の金属箔2が積層されるプリプレグ1はカラス布
、紙等の基材にエポキシ樹脂等の熱硬化性樹脂を含浸し
て乾燥させることによって長尺体として調製される。そ
してこのプリプレグ1を第3図に示されるようにロール
状に巻いたものから巻外して上下一対のベルト4間に連
続的に供給する。ここで、ベルト4としては表面に傷、
ピンホール等の存在しないものであり、上下に設置され
た左右で一対の2個のロール4a間に巻かれて上下で走
行自在となっており、ロール4aは一方が駆動用となっ
ている。そして、銅箔等の金属箔2も長尺に形成してロ
ール状に巻いておき、これを巻外して重ねロール6によ
ってプリプレグ1の最外層の外面に重ね合わせる。そし
て、両面金属箔張り積層板を作成する場合には第1図に
示されるようにプリプレグ1の両外面に二枚の金属箔2
を重す合わせるようにすると共に耐熱性の樹脂テープの
ような被覆シート5をU字状に曲成しつつ積層物3の端
部を被覆するように上下のベルト4間に連続的に供給す
る。つまり、第2図に示されるように被覆シート5は端
部がプリプレグ1の上下に配置された金属箔2間にわた
るように配置されるものであり、積層物3の長手方向の
端部は被覆シート5によって覆われた状態となっている
。ここで金属732は接着剤を塗布したものや、アルミ
ニウムキャリアーと極薄鋼箔との組み合わせになってい
る箔なといずれでも使用できる。このようにプリプレグ
1と金属箔2とを重ね合わせた積層物3を上下の高周波
印荷用電極7間に通し、無圧化または接触圧化にて誘電
加熱することによって積層物3に含浸された樹脂aを好
ましくは100〜140°C程度に加熱する。この際、
電極7と金属箔2とは電気的に接続されるよう接触圧で
行うのが望ましい、また、誘電加熱はプリプレグ1中の
樹脂aが熔融して流動性が与えられる程度になるまて行
われるもので、このように誘電加熱すると加熱温度はプ
リプレグ1の表面部よりもむしろ内部で高くなり、電熱
なと゛を用いて外部加熱する場合のように表面部が内部
よりも高く加熱されてプリプレグ1の表面部において樹
脂の硬化反応が速く進行し、プリプレグ1内の気泡が抜
けきらなくなるというようなことはなくなり、次工程で
の気泡の抜けを良くして、プリプレグ1内での気泡の残
留を低減できることになる。このように誘電加熱によっ
て予備加熱を行ってプリプレグ1中の樹脂を熔融状態に
したのち、積層物6を上下一対のベルト4間に導入する
。そして、ベルト4間で積層物3に加圧を行うが各ベル
ト4の内側には熱盤なと加圧加熱装置8が配置してあっ
て、この加圧加熱によっても積層物3に加圧と加熱を行
ってプリプレグlの樹脂aを硬化させると共にプリプレ
グ1と金属箔2とを積層接着一体止させる。ここで、プ
リプレグ1を誘電加熱して樹脂を熔融させると樹脂aの
熔融によってガスが発生したり、熔融した樹脂aが側方
に流れることとなるが、上記のように積層物3の端部に
は被覆シート5が設けられ、積層物3の端部は被覆シー
ト5によって覆われた状態となっているため、第2図に
示されるように熔融して側方に流れる樹脂aは金属箔2
の端部より流れ出てベルト3に付着することなく被覆シ
ート5によって止められることとなるものであり、流出
した樹脂aがベルト4の表面に付着して硬化するような
ことがないようになっている。
A prepreg 1 on which a metal foil 2 such as a copper foil is laminated is prepared as a long body by impregnating a base material such as glass cloth or paper with a thermosetting resin such as an epoxy resin and drying it. Then, as shown in FIG. 3, the prepreg 1 is unwound from a roll and continuously supplied between a pair of upper and lower belts 4. Here, the belt 4 has scratches on the surface,
It does not have pinholes, etc., and is wound between a pair of two rolls 4a on the left and right, installed above and below, so that it can run freely up and down, and one of the rolls 4a is used for driving. A metal foil 2 such as a copper foil is also formed into a long length and wound into a roll, which is unwound and superimposed on the outer surface of the outermost layer of the prepreg 1 by a stacking roll 6. When creating a double-sided metal foil clad laminate, two metal foils 2 are placed on both outer surfaces of the prepreg 1 as shown in FIG.
At the same time, a covering sheet 5 such as a heat-resistant resin tape is continuously fed between the upper and lower belts 4 so as to cover the ends of the laminate 3 while being bent into a U-shape. . That is, as shown in FIG. 2, the covering sheet 5 is arranged so that its end extends between the metal foils 2 disposed above and below the prepreg 1, and the longitudinal ends of the laminate 3 are covered with It is in a state covered by the sheet 5. Here, the metal 732 can be either coated with an adhesive or a foil made of a combination of an aluminum carrier and an ultra-thin steel foil. The laminate 3 in which the prepreg 1 and the metal foil 2 are stacked is passed between the upper and lower high-frequency loading electrodes 7, and the laminate 3 is impregnated by dielectric heating under no pressure or contact pressure. Preferably, the resin a is heated to about 100 to 140°C. On this occasion,
It is desirable to use contact pressure to electrically connect the electrode 7 and the metal foil 2, and dielectric heating is performed until the resin a in the prepreg 1 melts and becomes fluid. When dielectrically heated in this way, the heating temperature becomes higher inside the prepreg 1 rather than at the surface, and as in the case of external heating using electric heating, the surface is heated higher than the inside, causing the prepreg 1 to heat up to a higher temperature. The curing reaction of the resin progresses quickly on the surface area, and there is no longer a situation where the air bubbles in the prepreg 1 cannot be removed completely, making it easier to remove air bubbles in the next process and reducing the amount of air bubbles remaining in the prepreg 1. It will be possible. After the resin in the prepreg 1 is melted by preheating by dielectric heating in this manner, the laminate 6 is introduced between the pair of upper and lower belts 4. Pressure is applied to the laminate 3 between the belts 4, and a heating plate or pressure heating device 8 is disposed inside each belt 4, and this pressure heating also applies pressure to the laminate 3. The resin a of the prepreg 1 is cured by heating, and the prepreg 1 and the metal foil 2 are laminated and bonded together. Here, when the prepreg 1 is dielectrically heated to melt the resin, gas is generated due to the melting of the resin a, and the melted resin a flows to the side, but as described above, the edges of the laminate 3 is provided with a covering sheet 5, and the ends of the laminate 3 are covered with the covering sheet 5, so that the resin a that melts and flows laterally is a metal foil, as shown in FIG. 2
The resin a flows out from the end of the belt 3 and is stopped by the covering sheet 5 without adhering to the belt 3, so that the resin a that flows out does not adhere to the surface of the belt 4 and harden. There is.

そして、硬化が終了した積層物3はガイドロール9によ
って導かれ、例えば切断機によって所定箇所を切断する
ことにより、所定中、所定長さになった金属箔張り積層
板を得るものである。ここで、プリプレグ1は誘電加熱
によって予め加熱されているために、ベルト3間で加熱
を受ける際でのプリプレグ1と金属箔2との加熱速度に
事実上差はなく、プリプレグ1と金属箔2との熱膨張の
差による金属箔のしわの発生を防止できることとなる。
Then, the cured laminate 3 is guided by guide rolls 9 and cut at predetermined locations using a cutting machine, for example, to obtain a metal foil-clad laminate having a predetermined length. Here, since the prepreg 1 is preheated by dielectric heating, there is virtually no difference in the heating rate between the prepreg 1 and the metal foil 2 when they are heated between the belts 3. This makes it possible to prevent the occurrence of wrinkles in the metal foil due to the difference in thermal expansion between the metal foil and the metal foil.

図示された実施例にあっては、フリプレグ1は一層の場
合を示したが、複数枚重ねるようにした複数層であって
もよい。
In the illustrated embodiment, the flip-preg 1 has a single layer, but it may have a plurality of layers stacked one on top of the other.

[発明の効果] 本発明の金属箔張り積層板の製法は叙述のように上下の
ベルト間で加熱加圧される積層物の長手方向の両端面を
覆う被覆シートを上下に添設された金属箔間にわたるよ
うに上下のベルト間に連続的に供給するので、上下のベ
ルト間に供給される被覆シートは端部がプリプレグの上
下に配置された金属箔間にわたるように配置されるもの
てあり、積層物の長手方向の端部は被覆シートによって
覆われた状態となるものてあり、プリプレグと金属箔と
を積層接着一体止する場合に熔融した樹脂がベルトの表
面に流出して付着した後に硬化するというようなことを
防止することができるものであり、表面品質のよい金属
箔張り積層板を得ることができるものである。
[Effects of the Invention] As described above, the method for producing a metal foil-clad laminate of the present invention is as follows. Since the covering sheet is continuously supplied between the upper and lower belts so as to span between the foils, the covering sheet supplied between the upper and lower belts is arranged so that the end thereof spans between the metal foils arranged above and below the prepreg. The longitudinal ends of the laminate are covered with a covering sheet, and when the prepreg and metal foil are laminated and bonded together, the molten resin flows out and adheres to the surface of the belt. It is possible to prevent such things as hardening, and it is possible to obtain a metal foil-clad laminate with good surface quality.

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

第1図は本発明の一実施例を示す断面図、第2図は同上
の作用を示す断面図、第3図は全体構成を説明する説明
図であって、1はプリプレグ、2は金属箔、3は積層物
、4はベルト、5は被覆シートである。 プリプレグ 4〜ヘルド 5 被覆シート 代理人 弁理士 石 1)長 七 第16!!! 第2図 第3図
FIG. 1 is a cross-sectional view showing one embodiment of the present invention, FIG. 2 is a cross-sectional view showing the same effect as above, and FIG. , 3 is a laminate, 4 is a belt, and 5 is a covering sheet. Prepreg 4 to Held 5 Covering Sheet Agent Patent Attorney Stone 1) Long 7th 16th! ! ! Figure 2 Figure 3

Claims (1)

【特許請求の範囲】[Claims] [1]長尺のプリプレグを連続的に送りつつその両外面
に長尺の金属箔を重ね、このプリプレグの両外面に金属
箔を重ねた積層物を上下のベルト間に連続して送り込む
ことによって上下のベルト間で加熱加圧を行つて金属箔
張り積層板を得るにあたつて、上下のベルト間で加熱加
圧される積層物の長手方向の両端面を覆う被覆シートを
上下に添設された金属箔間にわたるように上下のベルト
間に連続的に供給して成ることを特徴とする金属箔張り
積層板の製法。
[1] By continuously feeding a long prepreg, overlapping a long metal foil on both outer surfaces of the prepreg, and continuously feeding a laminate with metal foil overlapping both outer surfaces of this prepreg between the upper and lower belts. When heating and pressing is performed between the upper and lower belts to obtain a metal foil-clad laminate, covering sheets are added above and below to cover both longitudinal end surfaces of the laminate that is heated and pressed between the upper and lower belts. A method for manufacturing a metal foil-clad laminate, characterized in that the metal foil is continuously supplied between upper and lower belts so as to cover the space between the metal foils.
JP2186129A 1990-07-14 1990-07-14 Manufacture of metal foil clad laminated sheet Pending JPH0473144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2186129A JPH0473144A (en) 1990-07-14 1990-07-14 Manufacture of metal foil clad laminated sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2186129A JPH0473144A (en) 1990-07-14 1990-07-14 Manufacture of metal foil clad laminated sheet

Publications (1)

Publication Number Publication Date
JPH0473144A true JPH0473144A (en) 1992-03-09

Family

ID=16182878

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2186129A Pending JPH0473144A (en) 1990-07-14 1990-07-14 Manufacture of metal foil clad laminated sheet

Country Status (1)

Country Link
JP (1) JPH0473144A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114867230A (en) * 2022-05-27 2022-08-05 江西省航宇电子材料有限公司 Method for keeping thickness of stainless steel-based copper-clad plate consistent

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56164821A (en) * 1980-05-21 1981-12-18 Matsushita Electric Works Ltd Production of laminate
JPS6031962A (en) * 1983-07-30 1985-02-18 住友ベークライト株式会社 Manufacture of laminated board
JPS60115439A (en) * 1983-11-28 1985-06-21 松下電工株式会社 Manufacture of metallic foil lined laminated board
JPS60189439A (en) * 1984-03-10 1985-09-26 松下電工株式会社 Manufacture of metallic foil lined laminated board

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56164821A (en) * 1980-05-21 1981-12-18 Matsushita Electric Works Ltd Production of laminate
JPS6031962A (en) * 1983-07-30 1985-02-18 住友ベークライト株式会社 Manufacture of laminated board
JPS60115439A (en) * 1983-11-28 1985-06-21 松下電工株式会社 Manufacture of metallic foil lined laminated board
JPS60189439A (en) * 1984-03-10 1985-09-26 松下電工株式会社 Manufacture of metallic foil lined laminated board

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114867230A (en) * 2022-05-27 2022-08-05 江西省航宇电子材料有限公司 Method for keeping thickness of stainless steel-based copper-clad plate consistent

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