JP3376907B2 - Manufacturing method of laminated board - Google Patents
Manufacturing method of laminated boardInfo
- Publication number
- JP3376907B2 JP3376907B2 JP04146398A JP4146398A JP3376907B2 JP 3376907 B2 JP3376907 B2 JP 3376907B2 JP 04146398 A JP04146398 A JP 04146398A JP 4146398 A JP4146398 A JP 4146398A JP 3376907 B2 JP3376907 B2 JP 3376907B2
- Authority
- JP
- Japan
- Prior art keywords
- base material
- aramid fiber
- woven fabric
- same
- substrate
- 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 - Lifetime
Links
Landscapes
- Reinforced Plastic Materials (AREA)
- Laminated Bodies (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、抄造により製造さ
れたアラミド繊維不織布基材を使用する積層板の製造法
に関する。TECHNICAL FIELD The present invention relates to a method for producing a laminate using an aramid fiber nonwoven fabric substrate produced by papermaking.
【０００２】[0002]
【従来の技術】アラミド繊維不織布基材は、セルロース
繊維紙基材と同様に、アラミド繊維を水中に分散させ、
これを金網上に漉いて製造される。このような抄造は連
続的に行なわれ、アラミド繊維不織布基材は一定幅で長
尺の巻物として供給される。抄造により製造された基材
には、金網に接触した面（ワイヤ面）と接触しない面
（フェルト面）ができる。積層板は、上記巻物から繰り
出した基材に連続的に熱硬化性樹脂を含浸し乾燥し、所
定寸法に裁断した樹脂含浸基材（プリプレグ）を重ねて
加熱加圧成形して製造する。セルロース繊維紙基材に熱
硬化性樹脂を含浸し所定寸法に裁断して、これを重ねて
加熱加圧成形した積層板では、積層板のそりを抑制する
ために、基材の表裏を交互にして基材の積層をしてい
る。基材の幅方向と長さ方向を交互に交差させて基材の
積層をすることもある。セルロース繊維紙基材の積層板
におけるこれらの技術は、基材各部の密度、強度、厚さ
等の物性バラツキを打ち消して、積層板のそり抑制に有
効に作用すると認識され、実際に効果を上げている。2. Description of the Related Art Aramid fiber non-woven fabric base material is similar to cellulose fiber paper base material in that aramid fiber is dispersed in water,
It is manufactured by filtering this on a wire mesh. Such papermaking is continuously performed, and the aramid fiber non-woven fabric base material is supplied as a long roll having a constant width. The base material manufactured by papermaking has a surface (a wire surface) that is in contact with the wire mesh and a surface (a felt surface) that is not in contact with the wire mesh. Laminate, impregnated with a continuous thermosetting resin substrates feeding from the roll and dried, you manufacturing heat pressure molded to overlap the resin-impregnated base material was cut into a predetermined size (prepreg). In a laminated board in which a cellulose fiber paper base material is impregnated with a thermosetting resin, cut into a predetermined size, and laminated with heat and pressure, the front and back surfaces of the base material are alternated in order to suppress warpage of the laminated board. The base materials are laminated. The base material may be laminated by alternately intersecting the width direction and the length direction of the base material. It is recognized that these technologies for cellulosic fiber paper-based laminates are effective in suppressing warpage of laminates by canceling out variations in physical properties such as density, strength, and thickness of each part of the substrate, and actually improved the effect. ing.
【０００３】[0003]
【発明が解決しようとする課題】当然のことながら、ア
ラミド繊維不織布基材の積層板においても、そりを抑制
するためには、セルロース繊維紙基材積層板と同様に基
材の積層をすればよいと推測される。しかしながら、セ
ルロース繊維紙基材積層板と同様に基材の積層をしたア
ラミド繊維不織布基材積層板は、そりが小さくない。本
発明が解決しようとする課題は、アラミド繊維不織布基
材積層板のそりを小さくすることである。As a matter of course, even in the laminated board of the aramid fiber non-woven fabric base material, in order to suppress the warpage, it is necessary to laminate the base materials in the same manner as the cellulose fiber paper base material laminated board. Presumed to be good. However, the warpage is not small in the aramid fiber non-woven fabric substrate laminate in which the substrates are laminated similarly to the cellulose fiber paper substrate laminate. The problem to be solved by the present invention is to reduce the warpage of the aramid fiber nonwoven fabric substrate laminate.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
に、本発明に係るアラミド繊維不織布基材の積層板の製
造は、抄造により製造されたアラミド繊維不織布基材に
熱硬化性樹脂を含浸し乾燥してプリプレグを製造し、こ
のプリプレグを重ねて加熱加圧成形する積層板の製造に
おいて、前記アラミド繊維不織布基材プリプレグの積層
を、基材の表裏と基材方向をいずれも同じに揃えてなす
ことを特徴とする。表裏とはワイヤ面とフェルト面であ
り、基材方向とは長尺の巻物として供給される基材の幅
方向ないしは長さ方向をいう。積層板を構成するシート
状繊維基材は、全てがアラミド繊維不織布基材であって
もよいし、一部（２枚以上）の基材がアラミド繊維不織
布基材であってもよい。一部の基材がアラミド繊維不織
布基材の場合には、そのアラミド繊維不織布基材プリプ
レグの積層を、基材の表裏と基材方向をいずれも同じに
揃えてなす。In order to solve the above problems, a laminate of an aramid fiber non-woven fabric substrate according to the present invention is manufactured.
The aramid fiber nonwoven fabric substrate manufactured by papermaking is impregnated with a thermosetting resin and dried to produce a prepreg.
For the production of laminated plates by stacking prepregs of
Dude, lamination of the aramid fiber nonwoven substrate prepreg
And characterized in that both be <br/> such aligned in the same front and back and the base direction of the substrate. The front and back sides are the wire surface and the felt surface, and the base material direction means the width direction or the length direction of the base material supplied as a long scroll. All of the sheet-like fiber base materials constituting the laminate may be aramid fiber nonwoven fabric base materials, or some (two or more) of the base materials may be aramid fiber nonwoven fabric base materials. If some of the base material is aramid fiber non-woven fabric base material, the aramid fiber non-woven fabric base material prep
The lamination of the leg, to Do aligned both in the same front and back and the base direction of the substrate.
【０００５】本発明において、積層板とは、シート状繊
維基材に熱硬化性樹脂を含浸し、所定寸法に裁断したも
のを重ねて加熱加圧成形したものや加熱加圧成形時に表
面に金属箔を一体化したもの、さらには、前記金属箔を
エッチング加工してプリント配線板としたものを含む。
また、抄造により製造されたアラミド繊維不織布基材に
熱硬化性樹脂を含浸しこれを電気絶縁層とした多層プリ
ント配線板を含む。In the present invention, the laminated plate means a sheet-like fiber base material impregnated with a thermosetting resin, cut into a predetermined size and then laminated by heating and pressing, or a metal on the surface during heating and pressing. It includes an integrated foil, and further includes a printed wiring board obtained by etching the metal foil.
It also includes a multilayer printed wiring board in which a aramid fiber non-woven fabric substrate manufactured by papermaking is impregnated with a thermosetting resin to form an electrically insulating layer.
【０００６】基材の積層を、基材の表裏を交互にした
り、基材方向を交互にして行なうと、基材各部の物性の
バラツキを打ち消すように作用すると考えられるとこ
ろ、抄造により製造されたアラミド繊維不織布基材のプ
リプレグを２枚以上積層する場合には、予測に反して、
基材の表裏と基材方向をいずれも同じに揃える積層が積
層板のそりを抑制する上で有効であることが判明した。When the base material is laminated by alternately arranging the front surface and the back surface of the base material and the base material direction is alternated, it is considered that it acts to cancel the variation in the physical properties of the respective parts of the base material, and it is manufactured by papermaking. up of aramid fiber nonwoven substrate
Contrary to expectations, when stacking two or more prepregs ,
It has been found that stacking in which the front and back surfaces of the base material and the direction of the base material are the same is effective in suppressing warpage of the laminated plate.
【０００７】[0007]
【発明の実施の形態】本発明を実施するに当たり、アラ
ミド繊維不織布基材は、例えば、次のようにして製造さ
れたものを使用する。一つは、パラ系のアラミド繊維チ
ョップを抄造して、不織布を構成している繊維同士を樹
脂バインダ（例えば、水溶性エポキシ樹脂）で結合する
方法である。アラミド繊維を抄造した不織布上に樹脂バ
インダをスプレーして硬化させ、繊維同士を結着する。
不織布中の樹脂バインダの含有量は、好ましくは５〜１
５重量％である。また、カレンダ処理により厚みの調整
も適宜する。二つ目は、アラミド繊維としてパラ系とメ
タ系のアラミド繊維チョップを併用して不織布を抄造
し、メタ系アラミド繊維を加熱溶融ないしは軟化させて
パラ系アラミド繊維に絡み合わせる方法である。メタ系
アラミド繊維がパラ系アラミド繊維に熱融着し、また、
メタ系アラミド繊維同士が熱融着した構成となってい
る。例えば、抄造した不織布を、温度２８０〜３５０
℃，線圧力１５０〜２５０kgf／cmに設定した熱ロール
の間に通すことにより、メタ系アラミド繊維を加熱溶融
ないしは軟化させ繊維同士の絡み合いを達成する。不織
布中のメタ系アラミド繊維の含有量は、耐熱性の観点か
ら、好ましくは５〜３０重量％である。三つ目は、上記
二つ目の方法に樹脂バインダの使用を組合わせる方法で
ある。パラ系とメタ系のアラミド繊維チョップを併用し
て抄造した不織布上に樹脂バインダをスプレーして硬化
させ、繊維同士を結着する。そして、不織布を熱ロール
の間に通すことによりメタ系アラミド繊維を溶融ないし
軟化させ繊維同士の絡み合いを達成する。不織布中の樹
脂バインダの含有量とメタ系アラミド繊維の含有量は上
記と同様の量が好ましい。さらには、フィブリル化した
メタ系アラミド繊維やメタ系アラミドのフィブリッドを
上記のメタ系アラミド繊維チョップの代わりに用いた構
成の不織布でもよい。さらに他の耐熱性繊維（ガラス繊
維、ポリエステル繊維、ポリフェニレンサルファイド繊
維等）を適宜配合した不織布でもよい。BEST MODE FOR CARRYING OUT THE INVENTION In carrying out the present invention, as the aramid fiber nonwoven fabric base material, for example, the one manufactured as follows is used. One is a method in which a para-type aramid fiber chop is made into a paper, and the fibers constituting the non-woven fabric are bonded with a resin binder (for example, a water-soluble epoxy resin). A resin binder is sprayed and cured on a non-woven fabric made of aramid fibers to bind the fibers together.
The content of the resin binder in the non-woven fabric is preferably 5 to 1
It is 5% by weight. Further, the thickness is appropriately adjusted by the calendar process. The second is a method in which para-type and meta-type aramid fiber chops are used together as aramid fibers to fabricate a nonwoven fabric, and the meta-type aramid fibers are heated and melted or softened to be entangled with the para-type aramid fibers. The meta-aramid fiber is heat-sealed to the para-aramid fiber,
The meta-aramid fibers are heat-sealed to each other. For example, a non-woven fabric is made at a temperature of 280 to 350.
By passing between the hot rolls set at a temperature of 150 ° C. and a linear pressure of 150 to 250 kgf / cm, the meta-aramid fibers are heated and melted or softened to achieve the entanglement of the fibers. The content of the meta-aramid fiber in the nonwoven fabric is preferably 5 to 30% by weight from the viewpoint of heat resistance. The third method is a combination of the above second method and the use of a resin binder. A resin binder is sprayed and cured on a non-woven fabric made by using both para-based and meta-based aramid fiber chops to bind the fibers together. Then, the non-woven fabric is passed between hot rolls to melt or soften the meta-aramid fiber to achieve entanglement of the fibers. The content of the resin binder and the content of the meta-aramid fiber in the non-woven fabric are preferably the same as above. Furthermore, a non-woven fabric having a structure in which fibrillated meta-aramid fiber or meta-aramid fibrid is used instead of the above meta-aramid fiber chop may be used. Further, it may be a non-woven fabric in which other heat resistant fibers (glass fiber, polyester fiber, polyphenylene sulfide fiber, etc.) are appropriately mixed.
【０００８】上記のようなアラミド繊維不織布に、エポ
キシ樹脂等の熱硬化性樹脂を含浸乾燥してプリプレグと
し、所定寸法に裁断したこのプリプレグを複数枚重ねて
加熱加圧成形により積層板とする。このとき、プリプレ
グの積層を、全てのアラミド繊維不織布基材の表裏と基
材方向をいずれも同じに揃えて行なう。積層板を構成す
る基材の全てがアラミド繊維不織布基材でないような場
合、例えば、芯層がアラミド繊維不織布基材で構成さ
れ、表面層がガラス繊維織布基材で構成されるような場
合には、芯層のアラミド繊維不織布基材の全ての表裏と
基材方向をいずれも同じに揃える。芯層がガラス繊維織
布基材で構成され、表面層がアラミド繊維不織布基材で
構成されるような場合にも、両表面層のアラミド繊維不
織布基材の全ての表裏と基材方向をいずれも同じに揃え
る。The above aramid fiber non-woven fabric is impregnated with a thermosetting resin such as an epoxy resin and dried to form a prepreg, and a plurality of the prepregs cut into a predetermined size are stacked and heat-pressed to form a laminate. At this time, the prepregs are laminated by aligning the front and back surfaces of all the aramid fiber nonwoven fabric base materials with the same base material direction. When all of the base materials constituting the laminate are not aramid fiber non-woven fabric base materials, for example, when the core layer is composed of aramid fiber non-woven fabric base material and the surface layer is composed of glass fiber woven fabric base material In the above, all the front and back surfaces of the aramid fiber nonwoven fabric base material of the core layer and the base material direction are the same. Even when the core layer is composed of a glass fiber woven base material and the surface layer is composed of an aramid fiber non-woven fabric base material, all the front and back surfaces of the aramid fiber non-woven fabric base material of both surface layers and the base material direction are Align the same.
【０００９】本発明における積層板は、金属箔張り積層
板や当該金属箔を回路にエッチング加工したプリント回
路板もその概念に含むが、さらには、内層と表面に回路
を配置した多層プリント回路板も積層板の概念に含む。
多層プリント回路板は、両面や片面プリント回路板を、
接着用プリプレグを介して重ね、加熱加圧成形により多
層一体化したものや、プリプレグを絶縁層としてビルド
アップにより回路を多層化したものである。このような
多層プリント回路板製造のための基材の一部ないし全部
にアラミド繊維不織布基材を使用している場合に、使用
しているアラミド繊維不織布基材の全ての表裏と基材方
向をいずれも同じに揃える。The concept of the laminated board in the present invention includes a metal foil-clad laminated board and a printed circuit board obtained by etching the metal foil into a circuit, and further, a multilayer printed circuit board having an inner layer and a circuit arranged on the surface. Is also included in the concept of a laminated board.
Multilayer printed circuit board, double-sided or single-sided printed circuit board,
It is a layered structure in which layers are laminated via adhesive prepregs and integrated into multiple layers by heat and pressure molding, or a circuit is multilayered by buildup using the prepreg as an insulating layer. When using the aramid fiber non-woven fabric base material as a part or all of the base material for manufacturing such a multilayer printed circuit board, all the front and back sides and the base material direction of the aramid fiber non-woven fabric base material used are All are the same.
【００１０】[0010]
【実施例】実施例１
（アラミド繊維不織布基材の準備）パラ系アラミド繊維
とメタ系アラミド繊維を併用して不織布を抄造し、水溶
性エポキシ樹脂バインダをスプレーし加熱乾燥して樹脂
バインダを硬化させ、繊維同士を結着した。さらに、こ
の不織布を熱ロールの間に通してメタ系アラミド繊維を
軟化ないし溶融させると共に圧縮することにより、メタ
系アラミド繊維の軟化による絡み合い、熱融着を促進し
た。製造したアラミド繊維不織布は、パラ系アラミド繊
維７７重量％，メタ系アラミド繊維１５重量％，樹脂バ
インダ８重量％の組成であり、単位重量６０ｇ／m2，厚
み１２０μｍで、長尺の巻物の形態で供給される。
（積層板の製造）次に、臭素化ビスフェノールＡ型エポ
キシ樹脂２７重量部，３官能エポキシ樹脂４６重量部，
硬化剤としてフェノールノボラック樹脂２７重量部，硬
化促進剤として２−エチル４−メチルイミダゾール０．
２重量部，溶剤としてメチルエチルケトン５０重量部か
らなる樹脂ワニスを調製し、このワニスを上記の巻物か
ら繰り出したアラミド繊維不織布基材に連続的に含浸乾
燥して樹脂含有量５０重量％のプリプレグを製造した。
所定寸法に裁断したこのプリプレグを４枚重ね合せ、そ
の上下に銅箔（厚み１８μｍ）を配し、これらを、温度
１７０℃，圧力４０kgf／cm2の条件で６０分間加熱加圧
成形し０．４mm厚の両面銅張り積層板を得た。この積層
板の製造におけるプリプレグの重ね合せは、アラミド繊
維不織布基材の表裏と基材方向をいずれも同じに揃えて
行なった。基材方向は長さ方向の前後も同じになるよう
に揃えた。Example 1 (Preparation of aramid fiber non-woven fabric base material) A non-woven fabric is made by using para-aramid fiber and meta-aramid fiber in combination, and a water-soluble epoxy resin binder is sprayed and dried by heating to cure the resin binder. Then, the fibers were bound together. Further, this non-woven fabric was passed between hot rolls to soften or melt the meta-aramid fibers and compress them, thereby promoting entanglement and heat fusion due to softening of the meta-aramid fibers. The produced aramid fiber nonwoven fabric has a composition of 77% by weight of para-aramid fiber, 15% by weight of meta-aramid fiber, and 8% by weight of resin binder, and has a unit weight of 60 g / m 2 , a thickness of 120 μm, and a form of a long scroll. Supplied with. (Production of Laminate) Next, 27 parts by weight of brominated bisphenol A type epoxy resin, 46 parts by weight of trifunctional epoxy resin,
27 parts by weight of phenol novolac resin as a curing agent, 2-ethyl 4-methylimidazole as a curing accelerator 0.
A resin varnish consisting of 2 parts by weight and 50 parts by weight of methyl ethyl ketone as a solvent was prepared, and this varnish was continuously impregnated into an aramid fiber non-woven fabric substrate unwound from the above roll to produce a prepreg having a resin content of 50% by weight. did.
Four pieces of this prepreg cut into a predetermined size are stacked, copper foils (thickness 18 μm) are arranged on the upper and lower sides thereof, and these are heat-pressed for 60 minutes under the conditions of a temperature of 170 ° C. and a pressure of 40 kgf / cm 2 for 0. A double-sided copper-clad laminate having a thickness of 4 mm was obtained. Superposition of the prepregs in the production of this laminated plate was performed by aligning the front and back sides of the aramid fiber nonwoven fabric base material with the same base material direction. The substrate direction was aligned so that it was the same before and after in the length direction.
【００１１】実施例２
実施例１において、基材方向は長さ方向の前後が交互に
反対になるように揃えた。その他は実施例１と同様とし
た。Example 2 In Example 1, the substrate directions were aligned such that the front and back of the length direction were alternately opposite. Others were the same as in Example 1.
【００１２】実施例３
長尺の巻物から繰り出したガラス繊維織布基材（０．１
mm厚）に実施例１の樹脂ワニスを連続的に含浸乾燥して
樹脂含有量４２重量％のプリプレグを製造した。所定寸
法に裁断したこのプリプレグを２枚重ね合せ、その上下
に実施例１のアラミド繊維不織布基材プリプレグを各１
枚重ね合せ、さらに両表面に銅箔（厚み１８μｍ）を配
し、実施例１と同様に加熱加圧成形し０．４mm厚の両面
銅張り積層板を得た。アラミド繊維不織布基材プリプレ
グの積層は、基材の表裏と基材方向をいずれも同じに揃
えて行なった。基材方向は長さ方向の前後も同じになる
ように揃えた。Example 3 A glass fiber woven fabric substrate (0.1
(mm thickness) was continuously impregnated with the resin varnish of Example 1 and dried to produce a prepreg having a resin content of 42% by weight. Two pieces of this prepreg cut into a predetermined size are superposed, and one aramid fiber non-woven fabric base material prepreg of Example 1 is placed on each of the upper and lower sides.
The sheets were stacked, copper foil (thickness 18 μm) was placed on both surfaces, and heat and pressure molding was performed in the same manner as in Example 1 to obtain a 0.4 mm-thick double-sided copper-clad laminate. Lamination of the aramid fiber nonwoven fabric base material prepreg was performed with the front and back surfaces of the base material and the base material direction being the same. The substrate direction was aligned so that it was the same before and after in the length direction.
【００１３】実施例４
実施例１のアラミド繊維不織布基材プリプレグを２枚重
ね合せ、その上下に実施例３のガラス繊維織布基材プリ
プレグを各１枚重ね合せ、さらに両表面に銅箔（厚み１
８μｍ）を配し、実施例１と同様に加熱加圧成形し０．
４mm厚の両面銅張り積層板を得た。アラミド繊維不織布
基材プリプレグの重ね合せは、基材の表裏と基材方向を
いずれも同じに揃えて行なった。基材方向は長さ方向の
前後も同じになるように揃えた。Example 4 Two aramid fiber non-woven fabric base material prepregs of Example 1 were superposed, and one glass fiber woven fabric base material prepreg of Example 3 was superposed one on top of the other, and copper foil ( Thickness 1
8 μm), and heat-press molding was performed in the same manner as in Example 1.
A double-sided copper-clad laminate having a thickness of 4 mm was obtained. The prepreg of the aramid fiber nonwoven fabric base material was superposed with the front and back surfaces of the base material and the base material direction being the same. The substrate direction was aligned so that it was the same before and after in the length direction.
【００１４】比較例１
実施例１において、アラミド繊維不織布基材プリプレグ
の重ね合せは、基材の表裏を交互にし、基材方向を同じ
に揃えて行なった。基材方向は長さ方向の前後も同じに
なるように揃えた。Comparative Example 1 In Example 1, the aramid fiber nonwoven fabric base material prepregs were superposed on each other with the front and back surfaces of the base materials alternating and the base materials oriented in the same direction. The substrate direction was aligned so that it was the same before and after in the length direction.
【００１５】比較例２
実施例１において、アラミド繊維不織布基材プリプレグ
の重ね合せは、基材の表裏を同じに揃え、基材方向を１
枚毎に交叉させて行なった。同じ方向の基材は長さ方向
の前後を同じになるように揃えた。Comparative Example 2 In Example 1, the aramid fiber nonwoven fabric base material prepregs were superposed on each other so that the front and back surfaces of the base materials were the same and the base material direction was 1
It was performed by crossing each sheet. The substrates in the same direction were aligned so that the front and rear in the length direction were the same.
【００１６】比較例３
実施例３において、アラミド繊維不織布基材プリプレグ
の積層は、互いに基材の表裏を反対にした。基材方向は
同じに揃え長さ方向の前後も同じに揃えた。Comparative Example 3 In Example 3, the aramid fiber nonwoven fabric base material prepregs were laminated such that the front and back surfaces of the base materials were opposite to each other. The base material direction was the same, and the front and rear in the length direction were also the same.
【００１７】比較例４
実施例３において、アラミド繊維不織布基材プリプレグ
の積層は、基材の表裏を同じに揃え、基材方向を互いに
交叉させた。Comparative Example 4 In Example 3, the aramid fiber nonwoven fabric base material prepregs were laminated so that the front and back surfaces of the base materials were the same and the base material directions were crossed with each other.
【００１８】比較例５
実施例４において、アラミド繊維不織布基材プリプレグ
の重ね合わせは、互いに基材の表裏を反対にした。基材
方向は同じに揃え長さ方向の前後も同じに揃えた。Comparative Example 5 In Example 4, the aramid fiber nonwoven fabric base material prepregs were superposed on each other with the front and back surfaces of the base materials being opposite to each other. The base material direction was the same, and the front and rear in the length direction were also the same.
【００１９】比較例６
実施例４において、アラミド繊維不織布基材プリプレグ
の重ね合わせは、基材の表裏を同じに揃え、基材方向を
互いに交叉させた。Comparative Example 6 In Example 4, the aramid fiber nonwoven fabric base material prepregs were superposed on each other by aligning the front and back surfaces of the base materials and crossing the base materials.
【００２０】参考例１
長尺の巻物から繰り出したセルロース繊維紙基材（単位
重量７０ｇ／m2，厚み１００μｍ）に実施例１の樹脂ワ
ニスを含浸乾燥して樹脂含有量４９重量％のプリプレグ
を製造した。所定寸法に裁断したこのプリプレグを４枚
重ね合せ、その上下に銅箔（厚み１８μｍ）を配し、こ
れらを、温度１７０℃，圧力１００kgf／cm2の条件で６
０分間加熱加圧成形し０．４mm厚の両面銅張り積層板を
得た。このプリプレグの重ね合せは、基材の表裏を交互
にし、基材方向を同じに揃えて行なった。基材方向は長
さ方向の前後も同じになるように揃えた。Reference Example 1 A prepreg having a resin content of 49% by weight was obtained by impregnating a cellulose fiber paper substrate (unit weight 70 g / m 2 , thickness 100 μm) unwound from a long roll with the resin varnish of Example 1 and drying. Manufactured. Four pieces of this prepreg cut to a predetermined size are stacked, copper foil (thickness 18 μm) is placed on the top and bottom of the prepreg, and these are placed at a temperature of 170 ° C. and a pressure of 100 kgf / cm 2 for 6 times.
It was heated and pressed for 0 minutes to obtain a 0.4 mm-thick double-sided copper-clad laminate. The superposition of the prepregs was performed by alternating the front and back sides of the base materials and aligning the base materials in the same direction. The substrate direction was aligned so that it was the same before and after in the length direction.
【００２１】参考例２
参考例１において、プリプレグの重ね合せは、基材の表
裏と基材方向をいずれも同じに揃えて行なった。基材方
向は長さ方向の前後も同じになるように揃えた。その他
は参考例１と同様とした。Reference Example 2 In Reference Example 1, the prepregs were superposed with the front and back surfaces of the base material and the base material direction being the same. The substrate direction was aligned so that it was the same before and after in the length direction. Others were the same as in Reference Example 1.
【００２２】上記の実施例，比較例，参考例における両
面銅張り積層板の銅箔を全面エッチングして除去し、１
５０℃のオ−ブン中で２０分間加熱処理した後、各積層
板のそりを測定した。測定は、５００×３００mmの積層
板を定盤の上におき、積層板四隅の定盤からの浮き上が
り量の最大値を求めた。そりの測定結果を表１に示す。The copper foils of the double-sided copper-clad laminates in the above-mentioned Examples, Comparative Examples and Reference Examples were entirely etched and removed, and 1
After heat treatment for 20 minutes in an oven at 50 ° C., the warpage of each laminate was measured. For the measurement, a laminated plate of 500 × 300 mm was placed on a surface plate, and the maximum value of the amount of lifting from the surface plate of the four corners of the laminated plate was obtained. Table 1 shows the measurement results of the sled.
【００２３】[0023]
【表１】 [Table 1]
【００２４】[0024]
【発明の効果】表１から明らかなように、本発明によれ
ば、抄造により製造されたアラミド繊維不織布基材を複
数枚積層して構成した熱硬化性樹脂積層板のそりを、従
来の技術常識では不可能と考えられていた構成で、小さ
くすることができる。全てのアラミド繊維不織布基材の
積層を、基材の表裏と基材方向をいずれも同じに揃えて
行なうに際し、基材方向を基材の前後方向も同じに揃え
ると、そりを一層小さくすることができる（実施例１と
実施例２の比較）。As is apparent from Table 1, according to the present invention, the sled of the thermosetting resin laminated plate constituted by laminating a plurality of aramid fiber non-woven fabric substrates manufactured by papermaking is manufactured by the conventional technique. It is possible to reduce the size with a structure that was considered impossible by common sense. When laminating all aramid fiber non-woven fabric base materials with the front and back surfaces of the base material aligned in the same direction and the base material direction is the same, the warpage can be further reduced by aligning the base material direction in the same front-back direction. (Comparing Example 1 and Example 2).
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B32B 1/00 - 35/00 B29B 11/16 B29B 15/08 - 15/14 C08J 5/04 - 5/10 C08J 5/24 ─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. 7 , DB name) B32B 1/00-35/00 B29B 11/16 B29B 15/08-15/14 C08J 5/04-5 / 10 C08J 5/24
Claims (2)
乾燥してプリプレグを製造し、所定寸法に裁断したこの
プリプレグを複数枚重ねて加熱加圧成形する積層板の製
造において、 前記シート状繊維基材の一部ないし全部に、抄造により
製造されたアラミド繊維不織布基材を使用し、当該基材
のプリプレグを２枚以上用い、 前記全てのアラミド繊維不織布基材プリプレグの積層
を、基材の表裏と基材方向をいずれも同じに揃えてなす
ことを特徴とする積層板の製造法。1. A sheet fibrous base material impregnated with a thermosetting resin.
This prepreg is dried and cut into a predetermined size.
Manufacture of laminated plates that heat and pressure mold by stacking multiple prepregs
In concrete, a part or all of the sheet-like fibrous base material, using the aramid fiber nonwoven substrate produced by papermaking, the substrate
Using prepreg two or more, the stack of all aramid fiber nonwoven substrate prepreg
The method for producing a laminate, characterized in that both the same in alignment with a to <br/> the front and back and the base direction of the substrate.
ることを特徴とする請求項１記載の積層板の製造法。2. The base material is aligned in the same direction in the front-back direction of the base material.
The method for manufacturing a laminated board according to claim 1, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04146398A JP3376907B2 (en) | 1998-02-24 | 1998-02-24 | Manufacturing method of laminated board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04146398A JP3376907B2 (en) | 1998-02-24 | 1998-02-24 | Manufacturing method of laminated board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11235777A JPH11235777A (en) | 1999-08-31 |
| JP3376907B2 true JP3376907B2 (en) | 2003-02-17 |
Family
ID=12609081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04146398A Expired - Lifetime JP3376907B2 (en) | 1998-02-24 | 1998-02-24 | Manufacturing method of laminated board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3376907B2 (en) |
-
1998
- 1998-02-24 JP JP04146398A patent/JP3376907B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11235777A (en) | 1999-08-31 |
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