JPH1142736A - Manufacture of metal foil-clad laminate - Google Patents
Manufacture of metal foil-clad laminateInfo
- Publication number
- JPH1142736A JPH1142736A JP9201389A JP20138997A JPH1142736A JP H1142736 A JPH1142736 A JP H1142736A JP 9201389 A JP9201389 A JP 9201389A JP 20138997 A JP20138997 A JP 20138997A JP H1142736 A JPH1142736 A JP H1142736A
- Authority
- JP
- Japan
- Prior art keywords
- epoxy resin
- metal foil
- laminate
- clad laminate
- resin composition
- 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
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、プリント配線板の
製造に使用される、金属箔張り積層板の製造方法に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a metal foil-clad laminate used for manufacturing a printed wiring board.
【0002】[0002]
【従来の技術】プリント配線板の製造に用いられるエポ
キシ樹脂系の金属箔張り積層板は、エポキシ樹脂組成物
をガラスクロス等の基材に含浸・乾燥して、一般にプリ
プレグと呼ばれるエポキシ樹脂含浸クロスを製造した
後、このエポキシ樹脂含浸クロスを所定の厚みになるよ
う重ね、更にその少なくとも一方の最外層に銅箔等の金
属箔を重ねて積層物を形成した後、その積層物を成形プ
レスの熱板の間に挟んで加熱・加圧して成形することに
より製造されている。2. Description of the Related Art Epoxy resin-based metal foil-clad laminates used in the manufacture of printed wiring boards are prepared by impregnating and drying an epoxy resin composition on a base material such as a glass cloth or the like, and forming an epoxy resin impregnated cloth generally called a prepreg. After manufacturing this, the epoxy resin impregnated cloth is laminated to a predetermined thickness, and a metal foil such as a copper foil is further laminated on at least one of the outermost layers to form a laminate. It is manufactured by sandwiching it between hot plates and molding by heating and pressing.
【0003】また、生産性の向上のために、間に平板を
挟みながら複数の積層物を重ねて積層体を形成し、その
積層体を熱板の間に挟んで加熱・加圧して、一度に多数
の金属箔張り積層板を製造する方法も行われている。In order to improve productivity, a laminate is formed by stacking a plurality of laminates while sandwiching a flat plate therebetween, and the laminate is sandwiched between hot plates and heated and pressed to produce a large number of laminates at once. A method of manufacturing a metal foil-clad laminate is also performed.
【0004】しかし、熱板の間に挟む積層物の数が3組
以上の場合、熱板から遠い部分の積層物と比較して、熱
板に近い部分の積層物は加熱時の昇温速度が速く、加熱
・加圧時の樹脂流れが大きくなるため、熱板に近い部分
で得られる積層板は、板厚偏差が大きいという問題や、
反りねじれが大きいという問題があった。そのため、特
開昭54−125266号に記載されたように、積層物
を重ねて形成した積層体と熱板の間に、一般に当て板と
呼ばれる、銅張り積層板等の有機系の当て板や、一般に
クッション材と呼ばれる、セルロースペーパー等の弾性
を有するシート状の弾性体を挟んで、板厚偏差や反りね
じれを小さくすることが検討されている。[0004] However, when the number of laminates sandwiched between the hot plates is three or more, compared to the laminate farther from the hot plate, the laminate near the hot plate has a higher heating rate during heating and has a higher heating rate.・ Because the resin flow at the time of pressurization becomes large, the laminate obtained at the part close to the hot plate has a problem that the thickness deviation is large,
There was a problem that the warpage was large. Therefore, as described in JP-A-54-125266, an organic caul plate such as a copper-clad laminate, generally called a caul plate, is generally provided between a laminate and a hot plate formed by laminating the laminates. It has been studied to reduce sheet thickness deviation and warp torsion by sandwiching a sheet-like elastic body having elasticity, such as cellulose paper, called a cushion material.
【0005】なお、当て板としては、製造しようとする
金属箔張り積層板に用いるエポキシ樹脂組成物と同様の
エポキシ樹脂組成物を用いた銅張り積層板が使用されて
おり、同じ当て板を、加熱・加圧して金属箔張り積層板
を製造するサイクルを、繰り返して使用することが一般
的である。[0005] As a backing plate, a copper-clad laminate using an epoxy resin composition similar to the epoxy resin composition used for the metal foil-clad laminate to be manufactured is used. It is common to repeatedly use a cycle of producing a metal foil-clad laminate by heating and pressing.
【0006】近年、電子機器の火災安全性を高めるため
に、難燃性の優れたプリント配線板が求められており、
ガラスクロスに難燃性エポキシ樹脂組成物を含浸した難
燃性エポキシ樹脂含浸クロスを用いて製造した、難燃性
の優れたエポキシ樹脂系の金属箔張り積層板が、そのた
めに用いられている。In recent years, in order to enhance the fire safety of electronic devices, printed wiring boards having excellent flame retardancy have been demanded.
An epoxy resin-based metal foil-clad laminate excellent in flame retardancy, manufactured using a flame-retardant epoxy resin impregnated cloth in which a glass cloth is impregnated with a flame-retardant epoxy resin composition, is used for that purpose.
【0007】しかし、難燃性エポキシ樹脂含浸クロスを
用いて積層物を形成し、その積層物を複数重ねて積層体
を形成し、その積層体を難燃性エポキシ樹脂を用いた当
て板で挟み、更に熱板間に挟んで加熱・加圧して金属箔
張り積層板を製造すると、得られる金属箔張り積層板の
表面の金属箔上に、タール状の異物や、その異物に起因
すると考えられる凹部が形成される場合があった。However, a laminate is formed by using a flame-retardant epoxy resin impregnated cloth, a plurality of the laminates are laminated to form a laminate, and the laminate is sandwiched by a backing plate using a flame-retardant epoxy resin. When the metal foil-clad laminate is manufactured by further heating and pressurizing between the hot plates, the tar-like foreign matter or the foreign matter on the metal foil on the surface of the obtained metal foil-clad laminate is considered to be caused by the foreign matter. In some cases, recesses were formed.
【0008】プリント配線板を製造するために、この異
物や凹部が形成された金属箔をエッチングして導体回路
を形成すると、異物が形成された部分はエッチングされ
ずに残って、導体回路間がショート不良となる場合があ
り、凹部が形成された部分は余分にエッチングされて、
導体回路が断線不良となる場合があり、導体回路の歩留
まりが低いという問題があった。そのため、表面の金属
箔上に異物等が形成され難い金属箔張り積層板の製造方
法が求められている。In order to manufacture a printed wiring board, when a conductive circuit is formed by etching the metal foil on which the foreign matter or the concave portion is formed, the portion where the foreign matter is formed remains without being etched, and the space between the conductive circuits is reduced. There may be short-circuit failure, the part where the concave part was formed is excessively etched,
There has been a problem that the conductor circuit may have a disconnection failure, and the yield of the conductor circuit is low. Therefore, there is a demand for a method of manufacturing a metal foil-clad laminate in which foreign substances and the like are hardly formed on the metal foil on the surface.
【0009】[0009]
【発明が解決しようとする課題】本発明は、上記問題点
を改善するために成されたもので、その目的とするとこ
ろは、ガラスクロスに難燃性エポキシ樹脂組成物を含浸
した難燃性エポキシ樹脂含浸クロスを所要枚数重ねると
共に、その少なくとも一方の最外層に金属箔を重ねて積
層物を形成し、その積層物を複数重ねて積層体を形成
し、その積層体を有機系の当て板で挟み、更に熱板間に
挟んで加熱・加圧して製造する金属箔張り積層板の製造
方法であって、表面の金属箔上に異物等が形成され難い
金属箔張り積層板の製造方法を提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a glass cloth impregnated with a flame-retardant epoxy resin composition. A required number of epoxy resin-impregnated cloths are stacked, and a metal foil is stacked on at least one of the outermost layers to form a laminate.A plurality of the laminates are stacked to form a laminate, and the laminate is used as an organic backing plate. A method for manufacturing a metal-foil-clad laminate, which is manufactured by heating and applying pressure while sandwiching between hot plates, further comprising a metal-foil-clad laminate in which foreign substances are unlikely to be formed on the surface metal foil. To provide.
【0010】[0010]
【課題を解決するための手段】本発明の請求項1に係る
金属箔張り積層板の製造方法は、ガラスクロスに難燃性
エポキシ樹脂組成物を含浸した難燃性エポキシ樹脂含浸
クロスを所要枚数重ねると共に、その少なくとも一方の
最外層に金属箔を重ねて積層物を形成し、その積層物を
複数重ねて積層体を形成し、その積層体を有機系の当て
板で挟み、更に熱板間に挟んで加熱・加圧して製造する
金属箔張り積層板の製造方法において、当て板が、ガラ
スクロス及び非ハロゲン系エポキシ樹脂組成物よりなる
絶縁層の表層に、金属箔の層を有する複層板であること
を特徴とする。According to a first aspect of the present invention, there is provided a method for manufacturing a metal-foil-clad laminate, comprising the steps of: providing a glass cloth impregnated with a flame-retardant epoxy resin composition in a required number of cloths impregnated with a flame-retardant epoxy resin; At the same time, a metal foil is laminated on at least one of the outermost layers to form a laminate, a plurality of the laminates are laminated to form a laminate, and the laminate is sandwiched between organic patch plates. A method for manufacturing a metal foil-clad laminate manufactured by heating and pressurizing sandwiched between, wherein the backing plate has a metal foil layer on a surface layer of a glass cloth and an insulating layer made of a non-halogen epoxy resin composition It is a plate.
【0011】本発明の請求項2に係る金属箔張り積層板
の製造方法は、請求項1記載の金属箔張り積層板の製造
方法において、難燃性エポキシ樹脂組成物が、臭素化エ
ポキシ樹脂組成物であることを特徴とする。According to a second aspect of the present invention, there is provided a method of manufacturing a metal foil-clad laminate according to the first aspect, wherein the flame-retardant epoxy resin composition comprises a brominated epoxy resin composition. It is characterized by being a thing.
【0012】本発明の請求項3に係る金属箔張り積層板
の製造方法は、請求項1又は請求項2記載の金属箔張り
積層板の製造方法において、当て板の内層に、ガラスク
ロス及び非ハロゲン系エポキシ樹脂組成物よりなる絶縁
層に挟まれた、弾性を有する弾性体の層をも有すること
を特徴とする。According to a third aspect of the present invention, there is provided a method of manufacturing a metal foil-clad laminate according to the first or second aspect, wherein the inner layer of the backing plate includes a glass cloth and a non-woven cloth. It is also characterized by having an elastic layer having elasticity sandwiched between insulating layers made of a halogen-based epoxy resin composition.
【0013】本発明の請求項4に係る金属箔張り積層板
の製造方法は、請求項3記載の金属箔張り積層板の製造
方法において、弾性体が、アラミド繊維シート、ガラス
繊維シート、フッ素ゴムシート及びこれらの複合体から
選ばれた少なくとも1種であることを特徴とする。According to a fourth aspect of the present invention, there is provided a method of manufacturing a metal foil-clad laminate according to the third aspect, wherein the elastic body is made of an aramid fiber sheet, a glass fiber sheet, or a fluoro rubber. It is characterized by being at least one selected from a sheet and a composite thereof.
【0014】本発明の請求項5に係る金属箔張り積層板
の製造方法は、請求項1から請求項4のいずれかに記載
の金属箔張り積層板の製造方法において、積層物が、導
体回路を形成した有機系基板の両側に、難燃性エポキシ
樹脂含浸クロスを所要枚数重ねると共に、その少なくと
も一方の最外層に金属箔を重ねた積層物であることを特
徴とする。According to a fifth aspect of the present invention, there is provided a method of manufacturing a metal foil-clad laminate according to any one of the first to fourth aspects, wherein the laminate comprises a conductor circuit. And a laminate in which a required number of flame-retardant epoxy resin-impregnated cloths are stacked on both sides of the organic substrate on which is formed, and a metal foil is stacked on at least one of the outermost layers.
【0015】当て板に、ハロゲン系エポキシ樹脂組成物
を含有する絶縁層を有する場合、ハロゲン系エポキシ樹
脂組成物のハロゲンの部分が加熱・加圧の繰り返しによ
って分解し、当て板の端部から剥離して飛散しやすくな
ると考えられる。そのため、この当て板と積層物等を積
層して金属箔張り積層板を製造しようとすると、当て板
の端部から飛散した分解物が、金属箔の表面に付着し、
得られる金属箔張り積層板の金属箔上に異物が形成され
やすくなる。しかし、本発明によると、絶縁層が、ガラ
スクロス及び非ハロゲン系エポキシ樹脂組成物よりなる
絶縁層であるため、加熱・加圧を繰り返しても分解され
難く、得られる金属箔張り積層板の金属箔上に異物が形
成され難くなって、更にその異物に起因すると考えられ
る凹部も形成され難くなる。When the backing plate has an insulating layer containing a halogen-based epoxy resin composition, the halogen portion of the halogen-based epoxy resin composition is decomposed by repeated heating and pressing, and peels off from the end of the backing plate. It is thought that it becomes easy to fly. Therefore, when trying to manufacture a metal foil-clad laminate by laminating this patch and the laminate, the decomposed substances scattered from the end of the patch, adhere to the surface of the metal foil,
Foreign matter is likely to be formed on the metal foil of the obtained metal foil-clad laminate. However, according to the present invention, since the insulating layer is an insulating layer made of a glass cloth and a non-halogen epoxy resin composition, the insulating layer is hardly decomposed even after repeated heating and pressing, and the metal of the obtained metal foil-clad laminate is obtained. It is difficult to form foreign matter on the foil, and it is also difficult to form a concave portion considered to be caused by the foreign matter.
【0016】[0016]
【発明の実施の形態】本発明に係る金属箔張り積層板の
製造方法の実施の形態を、図面に基づいて説明する。図
1は本発明に係る金属箔張り積層板の製造方法の、一実
施の形態を説明する断面図であり、図2は本発明に係る
金属箔張り積層板の製造方法の、一実施の形態の当て板
を説明する断面図であり、図3は本発明に係る金属箔張
り積層板の製造方法の、他の実施の形態の当て板を説明
する断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for producing a metal foil-clad laminate according to the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view illustrating one embodiment of a method for manufacturing a metal foil-clad laminate according to the present invention, and FIG. 2 is an embodiment of a method for manufacturing a metal foil-clad laminate according to the present invention. FIG. 3 is a cross-sectional view illustrating another embodiment of the method for manufacturing a metal foil-clad laminate according to the present invention.
【0017】本発明に係る金属箔張り積層板の製造方法
の一実施の形態は、図1に示すように、難燃性エポキシ
樹脂含浸クロス11を、製造しようとする積層板の厚み
により調整して所要枚数重ねると共に、その両方の最外
層に金属箔12を重ねて積層物10を形成し、その積層
物10を、間に金属製の平板40を挟みながら複数重ね
て積層体を形成し、その積層体を金属製の平板40と、
有機系の当て板20で挟み、更に熱板30の間に挟んで
加熱・加圧して製造する金属箔張り積層板の製造方法で
ある。なお、図示しないが、当て板20と熱板30の
間、又は当て板20と平板40の間に、セルロースペー
パー等の弾性を有するシート状の弾性体を挟んでいても
よい。In one embodiment of the method for manufacturing a metal foil-clad laminate according to the present invention, as shown in FIG. 1, a flame-retardant epoxy resin-impregnated cloth 11 is adjusted according to the thickness of the laminate to be manufactured. A required number of sheets are stacked, and a metal foil 12 is stacked on both outermost layers to form a laminate 10. A plurality of the laminates 10 are stacked with a metal flat plate 40 interposed therebetween to form a laminate. The laminate is made of a metal flat plate 40,
This is a method of manufacturing a metal foil-clad laminate sandwiched between organic caul plates 20 and further heated and pressed between hot plates 30. Although not shown, an elastic sheet-shaped elastic body such as cellulose paper may be interposed between the caul plate 20 and the hot plate 30 or between the caul plate 20 and the flat plate 40.
【0018】なお、図2に示すように、当て板20が、
ガラスクロス及び非ハロゲン系エポキシ樹脂組成物より
なる絶縁層21の表層に、金属箔の層22を有する複層
板であり、ハロゲン系エポキシ樹脂組成物を含有する絶
縁層は有さない複層板であることが重要である。ハロゲ
ン系エポキシ樹脂組成物を含有する絶縁層を有する場
合、得られる金属箔張り積層板の金属箔上に異物が形成
されやすくなる。これは、ハロゲン系エポキシ樹脂組成
物を含有する絶縁層を有する場合、ハロゲン系エポキシ
樹脂組成物のハロゲンの部分が加熱・加圧の繰り返しに
よって分解し、当て板20の端部から剥離して飛散しや
すくなるため、この当て板20と積層物10等を積層し
て金属箔張り積層板を製造しようとすると、当て板20
の端部から飛散した分解物が、金属箔12の表面に付着
し、得られる金属箔張り積層板の金属箔上に異物が形成
されやすくなると考えられる。なお、ガラスクロスを含
まない絶縁層の場合、当て板20の厚みのばらつきが大
きくなる傾向があるため、得られる金属箔張り積層板の
板厚のばらつきも大きくなる傾向があり問題となる。Note that, as shown in FIG.
A multilayer board having a metal foil layer 22 on the surface of an insulating layer 21 made of glass cloth and a non-halogen epoxy resin composition, and having no insulating layer containing a halogen epoxy resin composition. It is important that When an insulating layer containing a halogen-based epoxy resin composition is provided, foreign matter is likely to be formed on the metal foil of the obtained metal foil-clad laminate. This is because, when an insulating layer containing a halogen-based epoxy resin composition is provided, the halogen portion of the halogen-based epoxy resin composition is decomposed by repeated heating and pressurization, peeled off from the end of the backing plate 20, and scattered. In order to manufacture the metal foil-clad laminate by laminating the backing plate 20 and the laminate 10 or the like,
It is considered that the decomposed product scattered from the end of the metal foil 12 adheres to the surface of the metal foil 12 and foreign matter is easily formed on the metal foil of the obtained metal foil-clad laminate. In the case of an insulating layer that does not include a glass cloth, the variation in the thickness of the backing plate 20 tends to be large, and the variation in the thickness of the obtained metal foil-clad laminate tends to be large, which is a problem.
【0019】なお、上記当て板20の製造方法として
は、例えば、ガラスクロスに非ハロゲン系エポキシ樹脂
組成物を含浸した非ハロゲン系エポキシ樹脂含浸クロス
を所要枚数重ねると共に、その両最外層に金属箔を重ね
た後、加熱・加圧してこれらを一体化することにより製
造する。As a method of manufacturing the backing plate 20, for example, a glass cloth impregnated with a non-halogen epoxy resin composition impregnated with a non-halogen epoxy resin composition is stacked in a required number of times, and a metal foil is formed on both outermost layers. And then heat and pressurize to integrate them.
【0020】この非ハロゲン系エポキシ樹脂含浸クロス
の製造方法としては、例えば、非ハロゲン系エポキシ樹
脂組成物を溶剤で粘度調整したワニスに、ガラスクロス
を浸漬して含浸した後、加熱乾燥することにより半硬化
して製造したり、室温で固体状の非ハロゲン系エポキシ
樹脂組成物を、加熱溶融させて粘度を低下させた状態
で、ガラスクロスに含浸した後、冷却することにより固
化して製造する。The non-halogen epoxy resin-impregnated cloth may be produced, for example, by impregnating a non-halogen epoxy resin composition in a varnish having a viscosity adjusted with a solvent by impregnating the glass cloth and then heating and drying the cloth. It is manufactured by semi-curing or by impregnating a glass cloth with a non-halogen epoxy resin composition in a solid state at room temperature by heating and melting to reduce the viscosity, and then solidifying by cooling. .
【0021】なおガラスクロスは、ガラス繊維製の織布
であり、その厚みとしては0.04〜0.3mmのもの
が一般的に使用される。また、非ハロゲン系エポキシ樹
脂組成物は、分子内にエポキシ基を2個以上有する非ハ
ロゲン系エポキシ樹脂と、硬化剤を少なくとも含有し、
ハロゲン系エポキシ樹脂は含有しないエポキシ樹脂組成
物である。The glass cloth is a woven fabric made of glass fiber, and its thickness is generally 0.04 to 0.3 mm. Further, the non-halogen epoxy resin composition contains at least a non-halogen epoxy resin having two or more epoxy groups in a molecule and a curing agent,
An epoxy resin composition containing no halogen-based epoxy resin.
【0022】上記エポキシ樹脂としては、例えば、ビス
フェノールA型エポキシ樹脂、ビスフェノールF型エポ
キシ樹脂、フェノールノボラック型エポキシ樹脂、ビス
フェノールAノボラック型エポキシ樹脂、クレゾールノ
ボラック型エポキシ樹脂、ジアミノジフェニルメタン型
エポキシ樹脂等の単独、変性物、混合物が挙げられる。
なお、エポキシ樹脂1分子内のエポキシ基の数は、2個
以上であれは特に限定するものではないが、あまり多い
とエポキシ樹脂組成物の粘度が高くなって、ガラスクロ
スへの含浸性が低下するため、2〜30個の範囲のもの
を使用すると好ましい。なお、分子内にエポキシ基を1
個有するエポキシ樹脂を併用することもできる。Examples of the above epoxy resin include bisphenol A epoxy resin, bisphenol F epoxy resin, phenol novolak epoxy resin, bisphenol A novolak epoxy resin, cresol novolak epoxy resin, diaminodiphenylmethane epoxy resin and the like. , Modified products and mixtures.
The number of epoxy groups in one molecule of the epoxy resin is not particularly limited as long as it is two or more. However, if the number is too large, the viscosity of the epoxy resin composition becomes high, and the impregnating property to the glass cloth decreases. Therefore, it is preferable to use one in the range of 2 to 30 pieces. In addition, one epoxy group is present in the molecule.
It is also possible to use a plurality of epoxy resins together.
【0023】また、非ハロゲン系エポキシ樹脂組成物に
含有する硬化剤は、エポキシ樹脂と反応して硬化させる
ものであれば特に限定するものではなく、例えば、ジシ
アンジアミド、脂肪族ポリアミド等のアミド系硬化剤
や、芳香族アミン等のアミン系硬化剤や、ビスフェノー
ルA、ビスフェノールF、フェノールノボラック、クレ
ゾールノボラック、ピロガロール等のフェノール性化合
物や、ジアミノマレオニトリルや、ヒドラジド化合物
や、酸無水物等が挙げられ、これらを併用することもで
きる。更に非ハロゲン系エポキシ樹脂組成物には、必要
に応じて硬化促進剤等をも配合することができる。The curing agent contained in the non-halogen epoxy resin composition is not particularly limited as long as it reacts with the epoxy resin and cures. For example, amide curing agents such as dicyandiamide and aliphatic polyamide can be used. Agents, amine-based curing agents such as aromatic amines, phenolic compounds such as bisphenol A, bisphenol F, phenol novolak, cresol novolak, pyrogallol, diaminomaleonitrile, hydrazide compounds, and acid anhydrides. These can be used in combination. Further, the non-halogen epoxy resin composition may contain a curing accelerator and the like, if necessary.
【0024】なお、非ハロゲン系エポキシ樹脂含浸クロ
ス中の樹脂量は、非ハロゲン系エポキシ樹脂含浸クロス
の重量(樹脂及びガラスクロスの合計重量)100重量
部に対し、35〜50重量部であると好ましい。35重
量部未満の場合、得られる当て板20の内部に気泡が残
留する場合があるため、当て板20を繰り返し使用する
と、絶縁層21の内部、又は絶縁層21と金属箔の層2
2の間等で、剥離が発生する場合がある。また、50重
量部を超える場合は、当て板20の厚みのばらつきが大
きくなる傾向があるため、その当て板20を用いて製造
する金属箔張り積層板の板厚のばらつきも大きくなる傾
向がある。The amount of the resin in the non-halogenated epoxy resin impregnated cloth is 35 to 50 parts by weight based on 100 parts by weight of the non-halogenated epoxy resin impregnated cloth (total weight of resin and glass cloth). preferable. If the amount is less than 35 parts by weight, air bubbles may remain inside the obtained patch plate 20. Therefore, when the patch plate 20 is used repeatedly, the inside of the insulating layer 21 or the insulating layer 21 and the metal foil layer 2
Peeling may occur between the two. When the amount exceeds 50 parts by weight, the variation in the thickness of the backing plate 20 tends to increase, and the variation in the thickness of the metal foil-clad laminate manufactured using the backing plate 20 also tends to increase. .
【0025】また、当て板20の製造に用いる金属箔と
しては、銅、アルミニウム、真鍮、ニッケル等の単独、
合金、複合の金属箔を用いることができ、この金属箔の
厚みとしては、0.012〜0.070mmのものが一
般的に使用される。The metal foil used for manufacturing the backing plate 20 may be copper, aluminum, brass, nickel, or the like.
An alloy or composite metal foil can be used, and the thickness of the metal foil is generally 0.012 to 0.070 mm.
【0026】そして、これらの非ハロゲン系エポキシ樹
脂含浸クロスを、製造しようとする当て板20の厚みに
より調整して所要枚数重ねると共に、その両最外層に金
属箔を重ねた後、加熱・加圧してこれらを一体化するこ
とにより当て板20を製造する。この加熱・加圧する条
件としては、非ハロゲン系エポキシ樹脂含浸クロス中の
エポキシ樹脂が硬化する温度で適宜選択する。また加圧
は、得られる当て板の内部に気泡が残留しない程度の圧
力に適宜調整して加圧する。なお一般には、温度150
〜300℃、圧力1〜6MPa、時間10〜120分程
度の条件で加熱・加圧する。A required number of these non-halogen epoxy resin impregnated cloths are adjusted according to the thickness of the backing plate 20 to be manufactured, and a metal foil is stacked on both outermost layers, and then heated and pressed. The backing plate 20 is manufactured by integrating these. The heating and pressurizing conditions are appropriately selected depending on the temperature at which the epoxy resin in the non-halogen epoxy resin impregnated cloth cures. The pressure is appropriately adjusted to a pressure at which no air bubbles remain in the obtained contact plate, and the pressure is applied. In general, a temperature of 150
Heating and pressurizing are performed under conditions of about 300 ° C., a pressure of 1 to 6 MPa, and a time of about 10 to 120 minutes.
【0027】また、金属箔張り積層板の製造に用いる難
燃性エポキシ樹脂含浸クロスは、ガラスクロスに難燃性
エポキシ樹脂組成物を含浸したものであり、例えば、難
燃性エポキシ樹脂組成物を溶剤で粘度調整したワニス
に、ガラスクロスを浸漬して含浸した後、加熱乾燥する
ことにより半硬化して製造したり、室温で固体状の難燃
性エポキシ樹脂組成物を、加熱溶融させて粘度を低下さ
せた状態で、ガラスクロスに含浸した後、冷却すること
により固化して製造する。The flame-retardant epoxy resin-impregnated cloth used for the production of the metal foil-clad laminate is obtained by impregnating a glass cloth with a flame-retardant epoxy resin composition. After the glass cloth is immersed and impregnated in a varnish whose viscosity has been adjusted with a solvent, the glass cloth is semi-cured by heating and drying, or a solid flame-retardant epoxy resin composition is heated and melted at room temperature to obtain a viscosity. The glass cloth is impregnated in a state in which is reduced, and then solidified by cooling to produce.
【0028】なおガラスクロス、及び、その厚みとして
は、上記当て板に使用するガラスクロスと同様のものが
使用可能である。The glass cloth and the thickness thereof can be the same as the glass cloth used for the above-mentioned backing plate.
【0029】また、難燃性エポキシ樹脂組成物は、分子
内にエポキシ基を2個以上有するエポキシ樹脂と、硬化
剤を少なくとも含有する難燃性のエポキシ樹脂組成物で
ある。この樹脂組成物を難燃化する方法としては、臭素
化エポキシ樹脂等の難燃化エポキシ樹脂を含有すること
により難燃化する方法や、リン化合物、三酸化アンチモ
ン等の難燃剤を含有することにより難燃化する方法が挙
げられる。なお、臭素化エポキシ樹脂を含有することに
より難燃化する方法の場合、難燃剤を含有する方法や、
他のハロゲン化エポキシ樹脂を含有する方法と比較し
て、得られる積層板の電気特性が優れ好ましい。The flame-retardant epoxy resin composition is a flame-retardant epoxy resin composition containing at least an epoxy resin having two or more epoxy groups in a molecule and a curing agent. As a method of making this resin composition flame-retardant, a method of making it flame-retardant by containing a flame-retardant epoxy resin such as a brominated epoxy resin, or a method of containing a flame retardant such as a phosphorus compound or antimony trioxide. Flame retardation. Incidentally, in the case of a method of flame retardation by containing a brominated epoxy resin, a method containing a flame retardant,
Compared with other methods containing a halogenated epoxy resin, the resulting laminate has excellent electrical properties and is preferred.
【0030】難燃性エポキシ樹脂組成物に含有するエポ
キシ樹脂としては、上記当て板に使用するエポキシ樹脂
と同様のものが使用可能である。また、上記難燃化エポ
キシ樹脂としては、上記エポキシ樹脂の構造体中の水素
原子の一部を臭素化又は塩素化したエポキシ樹脂の単
独、混合物が挙げられる。なお、エポキシ樹脂1分子内
の好ましいエポキシ基の数も、上記当て板に使用するエ
ポキシ樹脂の場合と同様である。As the epoxy resin contained in the flame-retardant epoxy resin composition, the same epoxy resin as used for the above-mentioned backing plate can be used. Examples of the flame-retardant epoxy resin include an epoxy resin in which a part of hydrogen atoms in the structure of the epoxy resin is brominated or chlorinated, or a mixture thereof. The preferred number of epoxy groups in one molecule of the epoxy resin is the same as in the case of the epoxy resin used for the backing plate.
【0031】また、難燃性エポキシ樹脂組成物に含有す
る硬化剤も、上記当て板に使用する硬化剤と同様のもの
が使用可能である。なお、硬化剤としてジシアンジアミ
ドを含有する場合、得られる難燃性エポキシ樹脂含浸ク
ロスの保存安定性、及び得られる金属箔張り積層板の耐
熱性が優れ好ましい。更に難燃性エポキシ樹脂組成物に
は、必要に応じて硬化促進剤、無機充填材等をも配合す
ることができる。The curing agent contained in the flame-retardant epoxy resin composition may be the same as the curing agent used for the backing plate. When dicyandiamide is contained as a curing agent, the storage stability of the obtained flame-retardant epoxy resin-impregnated cloth and the heat resistance of the obtained metal-foil-clad laminate are excellent and preferable. Furthermore, a curing accelerator, an inorganic filler, and the like can be added to the flame-retardant epoxy resin composition, if necessary.
【0032】なお、難燃性エポキシ樹脂含浸クロス中の
樹脂量は、難燃性エポキシ樹脂含浸クロスの重量(樹脂
及びガラスクロスの合計重量)100重量部に対し、3
5〜70重量部であると好ましい。35重量部未満の場
合は、得られる金属箔張り積層板の耐熱性が低下する場
合があり、70重量部を超える場合は、得られる金属箔
張り積層板の板厚のばらつきが大きくなる場合がある。The amount of resin in the flame-retardant epoxy resin-impregnated cloth is 3 parts per 100 parts by weight of the flame-retardant epoxy resin-impregnated cloth (total weight of resin and glass cloth).
It is preferably from 5 to 70 parts by weight. If the amount is less than 35 parts by weight, the heat resistance of the obtained metal foil-clad laminate may decrease. If it exceeds 70 parts by weight, the thickness of the obtained metal foil-clad laminate may vary greatly. is there.
【0033】また、金属箔張り積層板の製造に用いる金
属箔、及びその厚みとしては、上記当て板に使用する金
属箔と同様のものが使用可能である。なお、金属箔は、
難燃性エポキシ樹脂含浸クロスを所要枚数重ねたものの
両方の最外層に重ねることに限定するものではなく、そ
の少なくとも一方の最外層に重ねていればよい。一方の
み重ねる場合、他方にはフッ素樹脂フィルム等の離型シ
ートが一般に積層される。また、金属箔の厚みが厚い場
合には、図1に示す、積層物10の間に挟んだ平板40
や、積層物10を複数重ねて形成した積層体の外側に積
層した平板40は無くてもよい。The metal foil used for manufacturing the metal foil-clad laminate and the thickness thereof can be the same as the metal foil used for the backing plate. The metal foil is
The number of flame-retardant epoxy resin-impregnated cloths is not limited to being overlapped on both outermost layers of the required number of pieces, but it is only necessary to overlap at least one of the outermost layers. When only one is laminated, a release sheet such as a fluororesin film is generally laminated on the other. When the thickness of the metal foil is large, the flat plate 40 sandwiched between the laminates 10 shown in FIG.
Alternatively, the flat plate 40 laminated on the outside of the laminate formed by laminating a plurality of laminates 10 may be omitted.
【0034】そして、難燃性エポキシ樹脂含浸クロス
を、製造しようとする金属箔張り積層板の厚みにより調
整して所要枚数重ねると共に、その最外層に金属箔を重
ねた後、加熱・加圧してこれらを一体化することにより
金属箔張り積層板を製造する。この加熱・加圧する条件
としては、難燃性エポキシ樹脂含浸クロス中のエポキシ
樹脂が硬化する温度で適宜選択する。また加圧は、得ら
れる金属箔張り積層板の内部に気泡が残留しない程度の
圧力に適宜調整して加圧する。なお一般には、温度15
0〜300℃、圧力1〜6MPa、時間10〜120分
程度の条件で加熱・加圧する。The required number of flame-retardant epoxy resin-impregnated cloths are adjusted according to the thickness of the metal foil-clad laminate to be manufactured, and the metal foil is stacked on the outermost layer, and then heated and pressed. A metal foil-clad laminate is manufactured by integrating these components. The heating and pressurizing conditions are appropriately selected depending on the temperature at which the epoxy resin in the flame-retardant epoxy resin-impregnated cloth cures. The pressure is appropriately adjusted to such a level that no air bubbles remain in the obtained metal foil-clad laminate, and the pressure is applied. In general, a temperature of 15
Heating and pressurizing are performed under the conditions of 0 to 300 ° C., a pressure of 1 to 6 MPa, and a time of about 10 to 120 minutes.
【0035】なお、上記の実施の形態は、当て板が、ガ
ラスクロス及び非ハロゲン系エポキシ樹脂組成物よりな
る絶縁層と、金属箔の層よりなる複層板である実施の形
態を説明したが、図3に示すように、当て板20の内層
に、ガラスクロス及び非ハロゲン系エポキシ樹脂組成物
よりなる絶縁層21に挟まれた、弾性を有する弾性体の
層23をも有していても良い。この場合、セルロースペ
ーパー等の弾性を有するシート状の弾性体を別途用意し
て当て板20と共に用いなくても、板厚偏差や反りねじ
れや成形性(金属箔張り積層板内部の気泡残存性)が優
れた金属箔張り積層板が得られ好ましい。更に、弾性体
の層23の両面が被覆されているため、シート状の弾性
体を単独で用いる場合と比較して、弾性体の表面から発
生する繊維等の異物の発生を防止することができ好まし
い。In the above embodiment, the backing plate has been described as an embodiment in which the backing plate is a multi-layer plate comprising an insulating layer made of glass cloth and a non-halogen epoxy resin composition and a metal foil layer. As shown in FIG. 3, the inner layer of the backing plate 20 may also have an elastic layer 23 having elasticity sandwiched between an insulating layer 21 made of glass cloth and a non-halogen epoxy resin composition. good. In this case, even if a sheet-like elastic body having elasticity such as cellulose paper is not separately prepared and used together with the backing plate 20, the sheet thickness deviation, warpage, and formability (bubble persistence inside the metal foil-clad laminate) can be achieved. Is preferable since a metal foil-clad laminate excellent in the above is obtained. Furthermore, since both surfaces of the elastic body layer 23 are covered, it is possible to prevent the generation of foreign substances such as fibers generated from the surface of the elastic body as compared with the case where the sheet-like elastic body is used alone. preferable.
【0036】この弾性体は、弾性を有し、加熱・加圧時
の温度及び圧力に耐えるものをシート状に形成したもの
であり、例えば、アラミド繊維シートや、ポリエステル
繊維シートや、ガラス繊維シート等の、多数の繊維を間
に空隙を設けて結合してシート状に形成したものや、フ
ッ素ゴム、ブタジエンスチレンゴム等の弾性を有する化
合物をシート状に形成したものや、これらの複合体が挙
げられる。なお、アラミド繊維シート、ガラス繊維シー
ト、フッ素ゴムシート及びこれらの複合体から選ばれた
少なくとも1種であると、耐熱性が特に優れるため、当
て板の繰り返し使用回数を増やすことが可能となり好ま
しい。This elastic body is formed of a sheet having elasticity and enduring the temperature and pressure during heating and pressurizing. For example, aramid fiber sheet, polyester fiber sheet, glass fiber sheet Such as a sheet formed by bonding a large number of fibers with voids between them, and formed into a sheet, fluorine rubber, butadiene styrene rubber or the like having an elastic compound formed into a sheet, or a composite thereof. No. It is preferable that at least one selected from an aramid fiber sheet, a glass fiber sheet, a fluororubber sheet, and a composite thereof is particularly excellent in heat resistance.
【0037】また、上記の実施の形態は、難燃性エポキ
シ樹脂含浸クロスのみを所要枚数重ねると共に、その最
外層に金属箔を重ねた積層物を用いて金属箔張り積層板
を製造する実施の形態を説明したが、積層物は、導体回
路を形成した有機系基板の両側に、難燃性エポキシ樹脂
含浸クロスを所要枚数重ねると共に、その少なくとも一
方の最外層に金属箔を重ねた積層物でも良い。この場
合、表面の金属箔上に異物が形成され難い、内層に導体
回路を有する多層の金属箔張り積層板が得られる。In the above embodiment, the required number of flame-retardant epoxy resin-impregnated cloths are stacked one on top of the other, and a metal foil-clad laminate is manufactured using a laminate in which a metal foil is stacked on the outermost layer. Although the form has been described, the laminate is a laminate in which a required number of flame-retardant epoxy resin-impregnated cloths are laminated on both sides of the organic substrate on which the conductive circuit is formed, and a metal foil is laminated on at least one of the outermost layers. good. In this case, it is possible to obtain a multi-layered metal foil-clad laminate having a conductor circuit in the inner layer, in which foreign substances are hardly formed on the metal foil on the surface.
【0038】[0038]
(実施例1)非ハロゲン系エポキシ樹脂組成物として、
非ハロゲン系エポキシ樹脂(ビスフェノールA型エポキ
シ樹脂[三井石油化学工業株式会社製、商品名R−35
0])を固形分として100重量部と、硬化剤(ジシア
ンジアミド[日本カーバイド株式会社製])を2.5重
量部と、硬化促進剤(2−エチル−4−メチルイミダゾ
ール[四国化成株式会社製])を0.2重量部配合して
混合した非ハロゲン系エポキシ樹脂組成物を使用した。(Example 1) As a non-halogen epoxy resin composition,
Non-halogen epoxy resin (bisphenol A type epoxy resin [trade name: R-35, manufactured by Mitsui Petrochemical Industries, Ltd.)
0]) as solids, 2.5 parts by weight of a curing agent (dicyandiamide [manufactured by Nippon Carbide Co., Ltd.]), and a curing accelerator (2-ethyl-4-methylimidazole [manufactured by Shikoku Chemicals Co., Ltd.] ]) Was used in an amount of 0.2 part by weight.
【0039】そして、溶剤(ジメチルホルムアミド)を
20重量部加えて粘度調整した上記熱硬化性樹脂に、基
材として厚さ0.19mmのガラスクロス[旭シュエー
ベル株式会社製、商品名7628]を用いて、浸漬して
含浸し、次いで、最高温度180℃で加熱乾燥して、樹
脂量が40重量%、170℃のゲルタイムが120秒の
非ハロゲン系エポキシ樹脂含浸クロスを作製した。Then, a 0.19 mm-thick glass cloth (trade name: 7628, manufactured by Asahi Schwebel KK) was used as a base material for the thermosetting resin whose viscosity was adjusted by adding 20 parts by weight of a solvent (dimethylformamide). Then, it was immersed and impregnated, and then heated and dried at a maximum temperature of 180 ° C. to prepare a non-halogen epoxy resin impregnated cloth having a resin amount of 40% by weight and a gel time of 120 ° C. at 170 ° C.
【0040】そしてこの非ハロゲン系エポキシ樹脂含浸
クロスを8枚重ねると共に、その両最外層に厚み0.0
18mmの銅箔[日鉱グールドフォイル株式会社製]を
重ねた後、金属製の平板で挟み、その両外側に弾性体と
して190g/平方mのクラフト紙[株式会社巴川製作
所製]5枚を重ねた後、熱板間に挟み最高温度180
℃、圧力3.0MPaで120分加熱・加圧して当て板
を作製した。Then, eight non-halogen epoxy resin impregnated cloths were stacked, and the outermost layers of both cloths had a thickness of 0.0.
After laminating 18 mm copper foil [manufactured by Nikko Gould Foil Co., Ltd.], sandwiched between metal flat plates, five sheets of 190 g / sq. M kraft paper [manufactured by Tomagawa Seisakusho] as an elastic body were laminated on both outer sides. After, sandwiched between hot plates, maximum temperature 180
Heating and pressing were performed at a temperature of 3.0 ° C. and a pressure of 3.0 MPa for 120 minutes to produce a patch.
【0041】また、難燃性エポキシ樹脂組成物として、
エポキシ樹脂(テトラブロモビスフェノールA型エポキ
シ樹脂[東都化成株式会社製、商品名YDB−500
K])を固形分として100重量部と、硬化剤(ジシア
ンジアミド[日本カーバイド株式会社製])を2.5重
量部と、硬化促進剤(2−エチル−4−メチルイミダゾ
ール[四国化成株式会社製])を0.2重量部配合して
混合した難燃性エポキシ樹脂組成物を使用した。Further, as a flame-retardant epoxy resin composition,
Epoxy resin (tetrabromobisphenol A type epoxy resin [YDB-500 manufactured by Toto Kasei Co., Ltd.)
K]) as a solid content, 100 parts by weight, a curing agent (dicyandiamide [manufactured by Nippon Carbide Co., Ltd.]) 2.5 parts by weight, and a curing accelerator (2-ethyl-4-methylimidazole [manufactured by Shikoku Chemicals Co., Ltd.] ]) Was mixed and mixed, and a flame-retardant epoxy resin composition was used.
【0042】そして、溶剤(ジメチルホルムアミド)を
20重量部加えて粘度調整した上記難燃性エポキシ樹脂
組成物に、基材として厚さ0.19mmのガラスクロス
[旭シュエーベル株式会社製、商品名7628]を用い
て、浸漬して含浸し、次いで、最高温度180℃で加熱
乾燥して、樹脂量が40重量%、170℃のゲルタイム
が120秒の難燃性エポキシ樹脂含浸クロスを作製し
た。Then, a glass cloth having a thickness of 0.19 mm [trade name: 7628, manufactured by Asahi Sweebel Co., Ltd.] was added to the flame-retardant epoxy resin composition whose viscosity was adjusted by adding 20 parts by weight of a solvent (dimethylformamide). To obtain a flame-retardant epoxy resin-impregnated cloth having a resin amount of 40% by weight and a gel time of 120 seconds at 170 ° C. at a maximum temperature of 180 ° C.
【0043】そしてこの難燃性エポキシ樹脂含浸クロス
を5枚重ねると共に、その両最外層に厚み0.035m
mの銅箔[日鉱グールドフォイル株式会社製]を重ねて
積層物を形成した。そしてその積層物10組を、間に金
属製の平板を挟みながら重ねて積層体を形成し、その積
層体の両側に、金属製の平板と、上記当て板と、弾性体
として190g/平方mのクラフト紙[株式会社巴川製
作所製]5枚をこの順に重ね、更に熱板の間に挟んで、
最高温度180℃、圧力3.0MPaで120分加熱・
加圧して金属箔張り積層板を製造した。Then, five pieces of the flame-retardant epoxy resin impregnated cloth were stacked, and the outermost layers of both cloths had a thickness of 0.035 m.
m of copper foil (manufactured by Nikko Gould Foil Co., Ltd.) to form a laminate. Then, 10 sets of the laminates are stacked while sandwiching a metal flat plate therebetween to form a laminate, and on both sides of the laminate, a metal flat plate, the above-mentioned contact plate, and 190 g / m 2 as an elastic body. 5 sheets of Kraft paper [made by Tomoe Seisakusho] are stacked in this order, sandwiched between hot plates,
Heat at maximum temperature of 180 ° C and pressure of 3.0MPa for 120 minutes.
A metal foil-clad laminate was produced by pressing.
【0044】次いで、同じ当て板を繰り返し用いて、上
記金属箔張り積層板の製造を100サイクル行った。Next, using the same backing plate repeatedly, the production of the metal foil-clad laminate was performed for 100 cycles.
【0045】(実施例2)弾性を有する弾性体として、
アラミド繊維シートとガラス繊維シートとフッ素ゴムシ
ートを複合したシート[ヤマウチ株式会社製、商品名F
GK20MK]を用いて、その両外側に実施例1と同様
の非ハロゲン系エポキシ樹脂含浸クロスを各1枚重ねる
と共に、その両最外層に厚み0.018mmの銅箔[日
鉱グールドフォイル株式会社製]を重ねることにより、
内層に弾性体の層を有する当て板を作製し用いたこと、
及び、銅箔厚さ0.035mm、絶縁部の厚み0.4m
mのエポキシ樹脂両面銅張り基板[松下電工株式会社
製、品名 R1766]の表面の銅箔をエッチングし
て、導体回路を形成した有機系基板を得、その両外側に
実施例1と同様の難燃性エポキシ樹脂含浸クロスを各1
枚重ねると共に、その両最外層に厚み0.035mmの
銅箔[日鉱グールドフォイル株式会社製]を重ねて積層
物を形成したこと以外は、実施例1と同様にして金属箔
張り積層板を製造した。(Example 2) As an elastic body having elasticity,
A sheet composed of an aramid fiber sheet, a glass fiber sheet and a fluoro rubber sheet [Yamauchi Co., Ltd., trade name F
GK20MK], a single non-halogen epoxy resin impregnated cloth similar to that of Example 1 was laminated on both outer sides thereof, and a copper foil of 0.018 mm thickness [manufactured by Nikko Gould Foil Co., Ltd.] on both outermost layers. By overlapping
Producing and using a backing plate having an elastic layer as an inner layer,
And copper foil thickness 0.035mm, insulation part thickness 0.4m
m epoxy resin double-sided copper-clad substrate [product name: R1766, manufactured by Matsushita Electric Works, Ltd.] is etched to obtain an organic substrate on which a conductor circuit is formed. 1 each of fire-resistant epoxy resin impregnated cloth
A metal foil-clad laminate was manufactured in the same manner as in Example 1 except that the laminate was formed by stacking a copper foil (manufactured by Nikko Gould Foil Co., Ltd.) having a thickness of 0.035 mm on both outermost layers. did.
【0046】(比較例1)非ハロゲン系エポキシ樹脂含
浸クロスに代えて、実施例1で作製した難燃性エポキシ
樹脂含浸クロスを用いて当て板を作製し、その当て板を
用いたこと以外は、実施例1と同様にして金属箔張り積
層板を製造した。(Comparative Example 1) A patch plate was prepared using the flame-retardant epoxy resin-impregnated cloth prepared in Example 1 in place of the non-halogen epoxy resin-impregnated cloth, and the patch plate was used. Then, a metal foil-clad laminate was manufactured in the same manner as in Example 1.
【0047】(比較例2)比較例1で用いた当て板に加
えて、アラミド繊維シートとガラス繊維シートとフッ素
ゴムシートを複合した弾性体[ヤマウチ株式会社製、商
品名FGK20MK]を用いたこと、及び、同じ弾性体
を繰り返し用いて金属箔張り積層板の製造を100サイ
クル行ったこと以外は、実施例2と同様にして金属箔張
り積層板を製造した。(Comparative Example 2) In addition to the backing plate used in Comparative Example 1, an elastic body composed of an aramid fiber sheet, a glass fiber sheet and a fluoro rubber sheet [manufactured by Yamauchi Corporation, trade name: FGK20MK] was used. A metal foil-clad laminate was manufactured in the same manner as in Example 2, except that the production of the metal foil-clad laminate was repeated 100 times by using the same elastic body repeatedly.
【0048】(評価、結果)各実施例及び各比較例で得
られた金属箔張り積層板の、外観不良数を評価した。そ
の方法としては、50サイクルと、100サイクル目で
得られた金属箔張り積層板の表面の金属箔上に、タール
状の異物や、その異物に起因すると考えられる凹部が発
生しているか否かを目視で観察し、その発生数を数え
た。なお、大きさ50×50cmの金属箔張り積層板の
両面を評価した。(Evaluation and Results) The number of defective appearances of the metal foil-clad laminates obtained in each of Examples and Comparative Examples was evaluated. As a method, whether or not a tar-like foreign material or a concave portion considered to be caused by the foreign material is generated on the metal foil on the surface of the metal foil-clad laminate obtained at the 50th cycle and the 100th cycle. Was visually observed, and the number of occurrences was counted. In addition, both sides of the metal foil-clad laminate having a size of 50 × 50 cm were evaluated.
【0049】その結果は、表1に示したように、各実施
例は各比較例と比べて外観不良が少なく、各実施例の製
造方法は、表面の金属箔上に異物等が形成され難い金属
箔張り積層板の製造方法であることが確認された。The results show that, as shown in Table 1, each of the examples has less appearance defects as compared with the comparative examples, and the manufacturing method of each of the examples is less likely to form foreign matter on the surface metal foil. It was confirmed that this was a method for producing a metal foil-clad laminate.
【0050】[0050]
【表1】 [Table 1]
【0051】[0051]
【発明の効果】本発明に係る金属箔張り積層板の製造方
法は、ガラスクロス及び非ハロゲン系エポキシ樹脂組成
物よりなる絶縁層の表層に、金属箔の層を有する当て板
を用いているため、表面の金属箔上に異物等が形成され
難い金属箔張り積層板の製造方法となる。The method of manufacturing a metal foil-clad laminate according to the present invention uses a backing plate having a metal foil layer as a surface layer of an insulating layer made of a glass cloth and a non-halogen epoxy resin composition. Thus, a method for manufacturing a metal-foil-clad laminate in which foreign substances and the like are unlikely to be formed on the metal foil on the surface is provided.
【図1】本発明に係る金属箔張り積層板の製造方法の、
一実施の形態を説明する断面図である。FIG. 1 shows a method for producing a metal foil-clad laminate according to the present invention.
FIG. 2 is a cross-sectional view illustrating one embodiment.
【図2】本発明に係る金属箔張り積層板の製造方法の、
一実施の形態の当て板を説明する断面図である。FIG. 2 shows a method for producing a metal foil-clad laminate according to the present invention.
It is sectional drawing explaining the backing plate of one Embodiment.
【図3】本発明に係る金属箔張り積層板の製造方法の、
他の実施の形態の当て板を説明する断面図である。FIG. 3 shows a method for producing a metal foil-clad laminate according to the present invention.
It is sectional drawing explaining the backing plate of other embodiment.
10 積層物 11 難燃性エポキシ樹脂含浸クロス 12 金属箔 20 当て板 21 絶縁層 22 金属箔の層 23 弾性体の層 30 熱板 40 平板 DESCRIPTION OF SYMBOLS 10 Laminate 11 Flame-retardant epoxy resin impregnated cloth 12 Metal foil 20 Backing plate 21 Insulating layer 22 Metal foil layer 23 Elastic layer 30 Hot plate 40 Flat plate
Claims (5)
物を含浸した難燃性エポキシ樹脂含浸クロスを所要枚数
重ねると共に、その少なくとも一方の最外層に金属箔を
重ねて積層物を形成し、その積層物を複数重ねて積層体
を形成し、その積層体を有機系の当て板で挟み、更に熱
板間に挟んで加熱・加圧して製造する金属箔張り積層板
の製造方法において、当て板が、ガラスクロス及び非ハ
ロゲン系エポキシ樹脂組成物よりなる絶縁層の表層に、
金属箔の層を有する複層板であることを特徴とする金属
箔張り積層板の製造方法。1. A required number of flame-retardant epoxy resin impregnated cloths in which a glass cloth is impregnated with a flame-retardant epoxy resin composition, and a metal foil is laminated on at least one outermost layer to form a laminate. In a method for manufacturing a metal-foil-clad laminate, which is produced by stacking a plurality of laminates to form a laminate, sandwiching the laminate with an organic backing plate, and further heating and pressing the laminate between hot plates, Is a glass cloth and a non-halogen epoxy resin composition on the surface of the insulating layer,
A method for producing a metal foil-clad laminate, which is a multilayer board having a metal foil layer.
ポキシ樹脂組成物であることを特徴とする請求項1記載
の金属箔張り積層板の製造方法。2. The method for producing a metal foil-clad laminate according to claim 1, wherein the flame-retardant epoxy resin composition is a brominated epoxy resin composition.
ロゲン系エポキシ樹脂組成物よりなる絶縁層に挟まれ
た、弾性を有する弾性体の層をも有することを特徴とす
る請求項1又は請求項2記載の金属箔張り積層板の製造
方法。3. An inner layer of the backing plate further comprising an elastic layer having elasticity sandwiched between an insulating layer made of glass cloth and a non-halogen epoxy resin composition. Item 3. The method for producing a metal foil-clad laminate according to Item 2.
繊維シート、フッ素ゴムシート及びこれらの複合体から
選ばれた少なくとも1種であることを特徴とする請求項
3記載の金属箔張り積層板の製造方法。4. The metal foil-clad laminate according to claim 3, wherein the elastic body is at least one selected from an aramid fiber sheet, a glass fiber sheet, a fluoro rubber sheet, and a composite thereof. Production method.
板の両側に、難燃性エポキシ樹脂含浸クロスを所要枚数
重ねると共に、その少なくとも一方の最外層に金属箔を
重ねた積層物であることを特徴とする請求項1から請求
項4のいずれかに記載の金属箔張り積層板の製造方法。5. A laminate in which a required number of flame-retardant epoxy resin-impregnated cloths are laminated on both sides of an organic substrate on which a conductor circuit is formed, and a metal foil is laminated on at least one of the outermost layers. The method for producing a metal foil-clad laminate according to any one of claims 1 to 4, characterized in that:
Priority Applications (1)
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JP20138997A JP3356010B2 (en) | 1997-07-28 | 1997-07-28 | Manufacturing method of metal foil-clad laminate |
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JP20138997A JP3356010B2 (en) | 1997-07-28 | 1997-07-28 | Manufacturing method of metal foil-clad laminate |
Publications (2)
Publication Number | Publication Date |
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JPH1142736A true JPH1142736A (en) | 1999-02-16 |
JP3356010B2 JP3356010B2 (en) | 2002-12-09 |
Family
ID=16440280
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009166404A (en) * | 2008-01-18 | 2009-07-30 | Sumitomo Bakelite Co Ltd | Laminate, method for manufacturing laminate, multilayer printed wiring board and semiconductor device |
JP2012114153A (en) * | 2010-11-22 | 2012-06-14 | Nippon Mektron Ltd | Method of manufacturing multilayer printed wiring board |
JPWO2014109021A1 (en) * | 2013-01-09 | 2017-01-19 | 三菱電機株式会社 | FIBER-REINFORCED COMPOSITE MATERIAL, ITS MANUFACTURING METHOD, ELEVATOR COMPONENT AND ELEVATOR CA |
-
1997
- 1997-07-28 JP JP20138997A patent/JP3356010B2/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009166404A (en) * | 2008-01-18 | 2009-07-30 | Sumitomo Bakelite Co Ltd | Laminate, method for manufacturing laminate, multilayer printed wiring board and semiconductor device |
JP2012114153A (en) * | 2010-11-22 | 2012-06-14 | Nippon Mektron Ltd | Method of manufacturing multilayer printed wiring board |
CN102548255A (en) * | 2010-11-22 | 2012-07-04 | 日本梅克特隆株式会社 | Manufacturing method for multilayer printed wiring board |
JPWO2014109021A1 (en) * | 2013-01-09 | 2017-01-19 | 三菱電機株式会社 | FIBER-REINFORCED COMPOSITE MATERIAL, ITS MANUFACTURING METHOD, ELEVATOR COMPONENT AND ELEVATOR CA |
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Publication number | Publication date |
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JP3356010B2 (en) | 2002-12-09 |
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