JPH0911401A - Manufacture of laminated sheet - Google Patents
Manufacture of laminated sheetInfo
- Publication number
- JPH0911401A JPH0911401A JP7161227A JP16122795A JPH0911401A JP H0911401 A JPH0911401 A JP H0911401A JP 7161227 A JP7161227 A JP 7161227A JP 16122795 A JP16122795 A JP 16122795A JP H0911401 A JPH0911401 A JP H0911401A
- Authority
- JP
- Japan
- Prior art keywords
- base material
- thermosetting resin
- varnish
- long base
- glass fiber
- 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)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、特に電気機器、電子機
器、通信機器等に使用される印刷回路板用として好適な
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 laminated board suitable for a printed circuit board used in electric equipment, electronic equipment, communication equipment and the like.
【０００２】[0002]
【従来の技術】民生用電子機器の小型化、高機能化が進
み、それに用いられる印刷回路基板として、ガラス不織
布を中間層基材とし、ガラス織布を表面層基材とした構
成で、エポキシ樹脂を含浸させ加熱加圧成形した積層板
（以下、コンポジット積層板という）が使用されてい
る。最近かかるコンポジット積層板に対し、従来この分
野で使用されている紙基材フェノール積層板と同等の打
抜き加工性、低コスト化が要求されるようになってき
た。2. Description of the Related Art Consumer electronic devices have become smaller and more sophisticated, and as a printed circuit board used for them, glass nonwoven fabric is used as an intermediate layer base material and glass woven fabric is used as a surface layer base material. A laminate (hereinafter referred to as a composite laminate) impregnated with a resin and heat-pressed is used. Recently, such composite laminates have been required to have the same punching workability and lower cost as those of the paper-based phenolic laminates conventionally used in this field.
【０００３】また産業用電子機器分野においても、低コ
スト化の必要性からガラス織布を使用しないか又はその
使用量を減らしたコンポジット積層板が使用されるよう
になってきたが、性能上ガラス織布基材積層板より種々
の点で劣り、これと同等の寸法変化、反りが小さいこと
が要求されるようになってきた。In the field of industrial electronic equipment, composite laminates which do not use glass woven fabric or reduce the amount of glass woven fabric have been used due to the need for cost reduction. It is inferior in various points to a woven fabric laminate, and it has been required to have the same dimensional change and small warpage.
【０００４】[0004]
【発明が解決しようとする課題】コンポジット積層板に
対する上記のような種々の要求に対して、中間層基材と
してガラス不織布を使用しないで、ガラス単繊維を配合
した樹脂ワニスを使用することが検討されたが、寸法変
化や反りは改良されるものの、製造上種々の問題点があ
り、実用化には未だ至っていない。一方、低コスト化の
ために、ガラス織布や不織布の割合を小さくすることも
検討されているが、性能上あるいは製造上の制約から低
コスト化も容易ではない。このような現状から、本発明
者はコンポジット積層板としての性能を維持向上させな
がら、低コスト化を達成することを目的として種々検討
した結果、長尺の繊維基材に片面側から熱硬化性樹脂ワ
ニスを塗布する工程、前記のワニス塗布面にガラス繊維
不織布を重ね合わせ加熱乾燥してプリプレグを得る方法
を見いだした（特願平７−７００８４号明細書）。 しかしながら、この方法では、無溶剤ワニスの場合は問
題ないが、液状の一般的な溶剤を含むワニスを使用した
ときは、ガラス不織布を重ね合わせた後の加熱乾燥工程
において、溶剤の蒸発によるボイドがプリプレグ中の残
存し、このボイドが成形後の積層板にも残り、絶縁特性
などの電気性能に悪影響を及ぼす場合があり、この改良
が課題であった。In order to meet the various demands for composite laminates as described above, it is considered to use a resin varnish containing a single glass fiber without using a glass nonwoven fabric as an intermediate layer base material. However, although the dimensional change and the warp are improved, there are various problems in manufacturing and they have not yet been put into practical use. On the other hand, it has been studied to reduce the proportion of glass woven fabric or non-woven fabric for cost reduction, but cost reduction is not easy due to performance or manufacturing restrictions. Under these circumstances, the present inventor has conducted various studies for the purpose of achieving cost reduction while maintaining and improving the performance as a composite laminate, and as a result, a long fiber base material has a thermosetting property from one side. A process of applying a resin varnish, a method of obtaining a prepreg by superimposing a glass fiber nonwoven fabric on the varnish application surface and heating and drying was found (Japanese Patent Application No. 7-70084). However, in this method, although there is no problem in the case of solvent-free varnish, when using a varnish containing a liquid general solvent, in the heating and drying step after stacking the glass nonwoven fabric, voids due to evaporation of the solvent This void remains in the prepreg and remains in the laminated plate after molding, which may adversely affect the electrical performance such as insulation properties.
【０００５】[0005]
【課題を解決するための手段】本発明は、長尺の繊維基
材の片面側から熱硬化性樹脂ワニスを塗布する工程、ワ
ニスが塗布された繊維基材を加熱乾燥する工程、前記繊
維基材のワニス塗布面にガラス繊維不織布を重ね合わせ
る工程、これらの積層物を加熱乾燥してプリプレグを得
る工程、このプリプレグ２枚を前記不織布を内側にして
重ね合わせ加熱加圧成形する工程を有することを特徴と
する積層板の製造方法に関するものであり、製造工程が
簡単で連続成形が可能で、ボイドのない積層板を得るこ
とができ、性能上も従来のコンポジット積層板と同等以
上のものを得ることができる。本発明において、プリプ
レグを製造するまでの工程の一例（概略）を図１に示
す。Means for Solving the Problems The present invention comprises a step of applying a thermosetting resin varnish from one side of a long fiber base material, a step of heating and drying the fiber base material coated with the varnish, and the fiber base. Having a step of laminating a glass fiber non-woven fabric on the varnish-coated surface of the material, a step of heating and drying these laminates to obtain a prepreg, and a step of superposing two of these prepregs with the non-woven fabric inside to heat-press-mold. The present invention relates to a method for manufacturing a laminated board characterized by a simple manufacturing process, continuous molding, and a void-free laminated board. Obtainable. In the present invention, an example (outline) of steps up to the production of a prepreg is shown in FIG.
【０００６】巻き出し装置から巻き出された長尺基材
（１）の上面に熱硬化性樹脂ワニス（２）をコーター
（３）により所定の膜厚になるように塗布する。この長
尺基材としては、ガラス繊維織布、ガラス繊維不織布、
合成繊維織布又は不織布、クラフト紙、リンター紙など
特に限定されないが、耐熱性の点からはガラス繊維織布
が好ましい。一方、打抜き加工性、低コスト化が特に要
求される場合はクラフト紙やリンター紙などのセルロー
ス系紙基材が好ましく使用される。A thermosetting resin varnish (2) is applied to the upper surface of the long base material (1) unwound from the unwinding device by a coater (3) so as to have a predetermined film thickness. As the long base material, a glass fiber woven cloth, a glass fiber non-woven cloth,
Synthetic fiber woven or non-woven fabric, kraft paper, linter paper and the like are not particularly limited, but glass fiber woven fabric is preferable from the viewpoint of heat resistance. On the other hand, when punching workability and cost reduction are particularly required, a cellulosic paper base such as kraft paper or linter paper is preferably used.
【０００７】本発明に用いられる熱硬化性樹脂ワニスに
おける熱硬化性樹脂はエポキシ樹脂が望ましいが、この
ほか、ポリイミド樹脂、ポリエステル樹脂、フェノール
樹脂などを用いることができる。かかる熱硬化性樹脂ワ
ニスはそのままでも使用することができるが、無機充填
材を配合することが好ましい。無機充填材を加えると、
打抜き加工性や寸法安定性を維持・向上させるととも
に、Ｚ方向の熱膨張率が小さくなるのでスルーホール信
頼性を向上させることも可能である。かかる無機充填材
としは、水酸化アルミニウム、炭酸カルシウム、クレ
ー、タルク、シリカ等であり、樹脂に対する配合割合は
１０〜２００重量％が好ましい。１０重量％以下では、
スルーホール信頼性の向上効果が小さく、２００重量％
を越えると無機充填材の配合が困難となる。The thermosetting resin in the thermosetting resin varnish used in the present invention is preferably an epoxy resin. In addition, a polyimide resin, a polyester resin, a phenol resin and the like can be used. Although such a thermosetting resin varnish can be used as it is, it is preferable to add an inorganic filler. If you add an inorganic filler,
It is possible to maintain and improve punching workability and dimensional stability, and also improve through-hole reliability because the coefficient of thermal expansion in the Z direction decreases. Examples of such an inorganic filler include aluminum hydroxide, calcium carbonate, clay, talc, silica, and the like, and the mixing ratio to the resin is preferably from 10 to 200% by weight. Below 10% by weight,
Through-hole reliability improvement effect is small, 200% by weight
If it exceeds, it becomes difficult to mix the inorganic filler.
【０００８】熱硬化性樹脂ワニスの固形分は、通常、無
機充填材を配合しない場合は６０〜８０重量％、無機充
填材を配合する場合は６５〜９０重量％（無機充填材も
固形分として計算）である。溶剤による希釈について
は、希釈前のワニスがある程度の低粘度であれば溶剤希
釈をしない無溶剤ワニスが好ましい。熱硬化性樹脂ワニ
スの塗布量は、以下の工程において、使用されるガラス
不織布の目付け量、あるいは長尺基材の下面に樹脂ワニ
スを塗布する場合はこの樹脂ワニスの塗布量によっても
変化するが、通常長尺基材１ｍ2 あたり、ワニス固型分
６００〜１４００ｇ程度であり、塗布厚み（乾燥前）は
０．２〜１．０ｍｍ程度である。The solid content of the thermosetting resin varnish is usually 60 to 80% by weight when the inorganic filler is not blended, and 65 to 90% by weight when the inorganic filler is blended (the inorganic filler is also a solid content. Calculation). Regarding dilution with a solvent, a solventless varnish that is not diluted with a solvent is preferable if the viscosity of the varnish before dilution is low to some extent. The coating amount of the thermosetting resin varnish varies depending on the coating amount of the glass non-woven fabric used in the following steps, or when the resin varnish is coated on the lower surface of the long base material, depending on the coating amount of the resin varnish. Usually, the solid content of varnish is about 600 to 1400 g per 1 m 2 of the long base material, and the coating thickness (before drying) is about 0.2 to 1.0 mm.
【０００９】コーター３としては、コンマロールコータ
ー、ナイフコーター、ダイスコーター、リバースコータ
ー等があるが、塗工厚みが０．２〜１．０ｍｍと厚いた
め、ワニス粘度を高粘度にする必要がある。このため高
粘度ワニスを塗工できる方式、例えばコンマロールコー
ター、ナイフコーターが好ましい。As the coater 3, there are a comma roll coater, a knife coater, a die coater, a reverse coater, etc., but since the coating thickness is as thick as 0.2 to 1.0 mm, it is necessary to make the varnish viscosity high. . For this reason, a method capable of applying a high-viscosity varnish, for example, a comma roll coater or a knife coater is preferable.
【００１０】長尺基材に前記熱硬化性樹脂ワニスを塗工
した後、乾燥装置（５）を通過させて溶剤を蒸発させ
る。加熱乾燥条件は、溶剤種やその量によって異なる
が、通常８０〜１６０℃で、３００秒〜５分程度であ
る。次に、上面よりガラス不織布（４）を重ね合わせ、
一方裏面からは以下に説明するように熱硬化性樹脂ワニ
スを塗工する。この塗工は通常ロールコーター（５）に
より行われるが、これに限定されるものではない。ガラ
ス不織布は、通常目付け量２０〜１５０ｇ／ｍ2 のもの
が使用される。裏面から長尺基材に塗工される熱硬化性
樹脂ワニスは、始めに塗工された熱硬化性樹脂ワニスが
長尺基材に十分に含浸されないのを補うためのもので、
塗工・含浸される樹脂量は少なくてよく、均一に含浸さ
せるためには樹脂固形分１０〜３０重量％程度のものが
通常使用される。After applying the thermosetting resin varnish to a long base material, the solvent is evaporated by passing through a drying device (5). The heating and drying conditions are usually 80 to 160 ° C. and about 300 seconds to 5 minutes, although they vary depending on the solvent species and the amount thereof. Next, superimpose the glass non-woven fabric (4) on the upper surface,
On the other hand, a thermosetting resin varnish is applied from the back surface as described below. This coating is usually performed by a roll coater (5), but is not limited to this. As the glass nonwoven fabric, one having a basis weight of 20 to 150 g / m 2 is usually used. The thermosetting resin varnish applied to the long base material from the back side is for compensating that the thermosetting resin varnish applied at the beginning is not sufficiently impregnated into the long base material,
The amount of resin to be coated / impregnated may be small, and in order to uniformly impregnate the resin, a resin solid content of about 10 to 30% by weight is usually used.
【００１１】その後、乾燥装置（７）を通して加熱乾燥
することにより、長尺基材上にガラス不織布が重ね合わ
された熱硬化性樹脂含浸プリプレグ（９）を得る。加熱
乾燥条件は、基材の全厚さが厚いので、通常よりやや強
い条件とし、１２０〜１８０℃、１〜５分間程度であ
る。その後、このプリプレグ（９）をカッター（８）に
より所定長さに切断する。あるいは、切断しないで連続
成形に供することも可能である。After that, a thermosetting resin-impregnated prepreg (9) in which a glass nonwoven fabric is superposed on a long base material is obtained by heating and drying through a drying device (7). Since the total thickness of the base material is thick, the heating and drying conditions are slightly stronger than usual, and are 120 to 180 ° C. and about 1 to 5 minutes. Then, this prepreg (9) is cut into a predetermined length by a cutter (8). Alternatively, it is also possible to perform continuous molding without cutting.
【００１２】このようにして得られたプリプレグは、ガ
ラス不織布側を内側にして２枚重ね合わせ加熱加圧成形
する。この成形は、通常所定長さに切断したプリプレグ
２枚を重ね合わせ多数プレスにて加熱加圧成形するが、
切断しない長尺のプリプレグ２枚を一方を上下逆向きに
して連続的に加熱加圧することもできる。樹脂がエポキ
シ樹脂の場合は通常前者の成形方法が行われ、この成形
条件は、含浸された樹脂の流動性にもよるが、通常は従
来のコンポジット積層板の場合と同様に、温度１５０〜
１８０℃、圧力２０〜７０ｋｇ／ｃｍ2 、時間６０〜１
２０分間が適当である。また、ポリエステル樹脂の場合
では、低圧成形が可能な後者の連続成形方法を採用する
ことができる。The prepreg thus obtained is heated and pressure-molded by stacking two sheets with the glass nonwoven fabric side inside. In this molding, two prepregs cut into a predetermined length are usually stacked and heated and pressed by a large number of presses.
It is also possible to continuously heat and press two long prepregs, which are not cut, with one of them upside down. When the resin is an epoxy resin, the former molding method is usually performed, and the molding condition is usually 150 ° C to 150 ° C as in the case of the conventional composite laminated plate, although it depends on the fluidity of the impregnated resin.
180 ° C., pressure 20-70 kg / cm 2 , time 60-1
Twenty minutes is suitable. Further, in the case of a polyester resin, the latter continuous molding method that enables low pressure molding can be adopted.
【００１３】[0013]
【作用】以上のような工程で、コンポジット積層板を得
ることができるが、本発明においては、ガラス織布等の
長尺基材に熱硬化性樹脂ワニスを塗布乾燥した後にガラ
ス不織布を重ね合わせるので、後の裏面から樹脂ワニス
を塗工する場合を含めても塗布・含浸工程が簡単であ
り、相対的にコストの高いガラス不織布の量を少なくす
ることができる。また、ガラス不織布を重ね合わせる前
に乾燥することにより溶剤によるボイドの発生を防ぐこ
とができ、成形性のよいプリプレグの製造が可能となっ
た。さらに、ガラス不織布は長尺基材とともに移動する
ので、ガラス不織布の切断も生じないし、ガラス繊維の
ピットも飛散することが少ない。従って、コンポジット
積層板製造時のトラブルが少なく、低コスト化をも達成
することができる。A composite laminated plate can be obtained by the above steps. In the present invention, a long base material such as a glass woven cloth is coated with a thermosetting resin varnish, dried and then laminated with a glass nonwoven cloth. Therefore, even if the resin varnish is applied from the rear surface afterward, the application / impregnation process is simple, and the amount of relatively expensive glass nonwoven fabric can be reduced. Further, by drying the glass non-woven fabrics before they are laminated, it is possible to prevent the generation of voids due to the solvent, and it becomes possible to produce a prepreg having good moldability. Furthermore, since the glass nonwoven fabric moves together with the long base material, the glass nonwoven fabric is not cut and the glass fiber pits are not scattered. Therefore, there are few troubles in the production of the composite laminate, and the cost can be reduced.
【００１５】[0015]
【実施例】次に本発明の実施例を比較例とともに具体的
に説明する。Next, examples of the present invention will be specifically described together with comparative examples.
【００１６】〔実施例〕長尺基材であるガラス織布（日
東紡績製 ＷＥ−１８Ｋ ＲＢ−８４）を巻き出し、続い
てこれに次の配合からなるＦＲ−４用ワニスＡをナイフ
コーターにより厚さ０．９ｍｍ（乾燥前）になるように
塗工した。 （ワニスＡ配合） エポキシ樹脂 １００重量部 （硬化剤ジシアンジアミドと硬化促進剤を含む） 無機充填材（水酸化アルミニウム） ８０重量部 超微粒子シリカ ２０重量部 溶剤（メチルセロソルブ） ５０重量部 乾燥装置で１５０℃、１分間乾燥し、次いで、上面側か
ら目付け量７５ｇ／ｍ2 のガラス不織布（日本バイリー
ン製 ＥＰ-４０７５）を重ね合わせ、裏面に次の配合の
ワニスＢをロールコーターにより塗布した。 （ワニスＢ配合） エポキシ樹脂（上記と同じ） ３０重量部 溶剤（メチルセロソルブ） ７０重量部Example A glass woven fabric (WE-18K RB-84 manufactured by Nitto Boseki), which is a long base material, is unwound, and subsequently, a varnish A for FR-4 having the following composition is used by a knife coater. Coating was performed so that the thickness was 0.9 mm (before drying). (Combined with varnish A) Epoxy resin 100 parts by weight (including curing agent dicyandiamide and curing accelerator) Inorganic filler (aluminum hydroxide) 80 parts by weight Ultrafine particle silica 20 parts by weight Solvent (methyl cellosolve) 50 parts by weight Dryer 150 ° C., then dried for 1 minute, then superposing the nonwoven glass fabric having a basis weight 75 g / m 2 (Japan Vilene Ltd. EP-4075) from the top side, the varnish B of the following formulation was applied by a roll coater on the back. (Combining varnish B) Epoxy resin (same as above) 30 parts by weight Solvent (methyl cellosolve) 70 parts by weight
【００１７】続いて、上記のワニスＡ及びＢが塗工され
た基材を、乾燥装置により１６０℃で３分間加熱乾燥
し、ガラス織布及びガラス不織布からなるプリプレグを
得た。これを所定長さ（２ｍ）に切断した後、ガラス不
織布を内側にして２枚重ね合わせ、さらにその上下に厚
さ１８μｍの銅箔を重ね合わせ、温度１６５℃、圧力６
０ｋｇ／ｃｍ2 で９０分間加熱加圧成形して、厚さ１．
６ｍｍの銅張積層板を作製した。Subsequently, the base material coated with the above varnishes A and B was heated and dried at 160 ° C. for 3 minutes by a drying device to obtain a prepreg made of a glass woven cloth and a glass nonwoven cloth. After cutting this into a predetermined length (2 m), two glass nonwoven fabrics are placed inside and two copper foils with a thickness of 18 μm are placed on top and bottom, and the temperature is 165 ° C. and the pressure is 6
It was heated and pressed at 0 kg / cm 2 for 90 minutes to obtain a thickness of 1.
A 6 mm copper-clad laminate was produced.
【００１８】〔比較例１〕実施例で使用したＦＲ−４用
エポキシ樹脂を前記溶剤で樹脂固形分６０重量％（０．
３ポイズ）にまで希釈してワニスとした。このワニスを
実施例で使用したガラス織布（日東紡績製 ＷＥ−１８
Ｋ ＲＢ−８４）にディップ方式で塗布含浸させ乾燥し
て表面層用プリプレグを作製した。そして、上記希釈し
たＦＲ−４用エポキシ樹脂ワニスをガラス不織布（日本
バイリーン製 ＥＰ-４０７５）にディップ方式で塗布含
浸し乾燥して中間層用プリプレグを作製した。次いで、
中間用プリプレグを所定枚数（４枚）重ね、その上下に
表面層用プリプレグを重ね、さらにその上下に厚さ１８
μｍ銅箔を重ね合わせ加熱加圧成形して厚さ１．６ｍｍ
の銅張積層板を作製した。[Comparative Example 1] The epoxy resin for FR-4 used in the examples was treated with the above solvent to obtain a resin solid content of 60% by weight (0.
It was diluted to 3 poise) to make a varnish. A glass woven fabric (WE-18 manufactured by Nitto Boseki Co., Ltd.) using this varnish in Examples.
KRB-84) was coated and impregnated by a dip method and dried to prepare a surface layer prepreg. Then, the diluted epoxy resin varnish for FR-4 was applied and impregnated on a glass nonwoven fabric (EP-4075 manufactured by Nippon Vilene) by a dip method and dried to prepare a prepreg for an intermediate layer. Then
A predetermined number of intermediate prepregs (4 sheets) are piled up, surface layer prepregs are piled up and down, and a thickness of 18 is piled up and down.
1.6 μm thick by stacking μm copper foil and heating and pressing
A copper clad laminate of was produced.
【００１９】〔比較例２〕比較例１と同様にして表面層
用ガラス織布プリプレグを作製した。一方、次の配合か
らなるＦＲ−４用ワニスＣを調製した。 （ワニスＣ配合） エポキシ樹脂（ワニスＡと同じ） １００重量部 無機充填材（水酸化アルミニウム） ８０重量部 超微粒子シリカ ２０重量部 溶剤（メチルセロソルブ） ６５重量部 このワニスＣをガラス不織布（日本バイリーン製 ＥＰ-
４０７５）にディップ方式で塗布含浸し乾燥して中間層
用プリプレグを作製した。次いで、中間用プリプレグを
所定枚数（３枚）重ね、その上下に表面層用プリプレグ
を重ね、さらにその上下に厚さ１８μｍ銅箔を重ね合わ
せ加熱加圧成形して厚さ１．６ｍｍの銅張積層板を作製
した。Comparative Example 2 A woven prepreg for a surface layer was prepared in the same manner as in Comparative Example 1. On the other hand, a varnish C for FR-4 having the following composition was prepared. (Combined with varnish C) Epoxy resin (same as varnish A) 100 parts by weight Inorganic filler (aluminum hydroxide) 80 parts by weight Ultrafine silica 20 parts by weight Solvent (methyl cellosolve) 65 parts by weight This varnish C is a glass nonwoven fabric (Japan Vilene) Made EP-
4075) was coated and impregnated by the dip method and dried to prepare a prepreg for the intermediate layer. Next, a predetermined number (three) of intermediate prepregs are laminated, a prepreg for a surface layer is laminated on the upper and lower sides, and a copper foil having a thickness of 1.6 mm is laminated on the upper and lower sides by heating and pressing to form a copper clad having a thickness of 1.6 mm. A laminate was prepared.
【００２０】以上実施例及び比較例で得られた銅張積層
板について、打抜き加工性寸法安定性反り曲げ強さ及び
Ｚ方向熱膨張率を測定した。その結果を表１に示す。With respect to the copper clad laminates obtained in the above Examples and Comparative Examples, punching workability, dimensional stability, warp bending strength, and Z-direction thermal expansion coefficient were measured. Table 1 shows the results.
【００２１】[0021]
【表１】 [Table 1]
【００２２】なお、製造コストについては、実施例の方
法は工程が単純であり、コストの高いガラス繊維不織布
の使用量を少なくしたので、実施例では得られた積層板
は比較例で得られたものに比べ１０％程度低コスト化す
ることができた。Regarding the manufacturing cost, the method of the example has a simple process, and the amount of expensive glass fiber non-woven fabric used is reduced, so that the laminated plate obtained in the example is obtained in the comparative example. It was possible to reduce the cost by about 10% compared to the conventional one.
【００２３】[0023]
【発明の効果】本発明の方法は、曲げ強度の低下がな
く、打抜き加工性が良好で、反り・寸法変化が小さい積
層板を得ることができる。そして、低コスト化の点で優
れており、製造工程も簡単であるので、工業的な積層板
の製造方法として好適である。According to the method of the present invention, it is possible to obtain a laminated plate which is free from deterioration of bending strength, has good punching workability, and has small warpage and dimensional change. Further, since it is excellent in cost reduction and the manufacturing process is simple, it is suitable as an industrial laminated plate manufacturing method.
【図１】 本発明の製造工程において、プリプレグを作
製するまでの工程を示す概略断面図FIG. 1 is a schematic cross-sectional view showing a process up to manufacturing a prepreg in a manufacturing process of the present invention.
１ 長尺基材 ２ ワニス ３ コーター ４ ガラス不織布 ５ 乾燥装置 ６ ロールコーター ７ 乾燥装置 ８ カッター ９ プリプレグ 1 Long base material 2 Varnish 3 Coater 4 Glass non-woven fabric 5 Drying device 6 Roll coater 7 Drying device 8 Cutter 9 Prepreg
Claims (3)
脂ワニスを塗布する工程、ワニスが塗布された繊維基材
を加熱乾燥する工程、前記繊維基材のワニス塗布面にガ
ラス繊維不織布を重ね合わせる工程、これらの積層物を
加熱乾燥してプリプレグを得る工程、このプリプレグ２
枚を前記不織布を内側にして重ね合わせ加熱加圧成形す
る工程を有することを特徴とする積層板の製造方法。1. A step of applying a thermosetting resin varnish from one side of a long fiber base material, a step of heating and drying the fiber base material to which the varnish is applied, and a glass fiber on the varnish application surface of the fiber base material. The step of stacking non-woven fabrics, the step of heating and drying these laminates to obtain a prepreg, this prepreg 2
A method for producing a laminated plate, comprising a step of stacking the sheets with the non-woven fabric inside and subjecting the sheets to heat-press molding.
するものである請求項１記載の積層板の製造方法。2. The method for producing a laminated board according to claim 1, wherein the thermosetting resin varnish contains an inorganic filler.
不織布を重ね合わせる工程に続いて、反対面から熱硬化
性樹脂ワニスを塗布する工程を有する請求項１又は２記
載の積層板の製造方法。3. The method for producing a laminated board according to claim 1, further comprising a step of applying a thermosetting resin varnish from the opposite surface after the step of superposing the glass fiber nonwoven fabric on the varnish-coated fiber base material. .
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7161227A JP3011871B2 (en) | 1995-06-27 | 1995-06-27 | Manufacturing method of laminated board |
| US08/714,264 US6124220A (en) | 1995-03-28 | 1996-09-17 | Laminated board and process for production thereof |
| TW85111363A TW440528B (en) | 1995-03-28 | 1996-09-17 | Laminated board and process for production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7161227A JP3011871B2 (en) | 1995-06-27 | 1995-06-27 | Manufacturing method of laminated board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0911401A true JPH0911401A (en) | 1997-01-14 |
| JP3011871B2 JP3011871B2 (en) | 2000-02-21 |
Family
ID=15731052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7161227A Expired - Fee Related JP3011871B2 (en) | 1995-03-28 | 1995-06-27 | Manufacturing method of laminated board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3011871B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002529274A (en) * | 1998-11-06 | 2002-09-10 | ストラクチュラル ポリマー システムズ リミテッド | Molding material |
| WO2017145872A1 (en) * | 2016-02-23 | 2017-08-31 | 東レ株式会社 | Method for producing fiber reinforced composite material |
| JP2018192725A (en) * | 2017-05-18 | 2018-12-06 | パナソニックＩｐマネジメント株式会社 | Composite laminate |
-
1995
- 1995-06-27 JP JP7161227A patent/JP3011871B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002529274A (en) * | 1998-11-06 | 2002-09-10 | ストラクチュラル ポリマー システムズ リミテッド | Molding material |
| WO2017145872A1 (en) * | 2016-02-23 | 2017-08-31 | 東レ株式会社 | Method for producing fiber reinforced composite material |
| CN108698268A (en) * | 2016-02-23 | 2018-10-23 | 东丽株式会社 | The manufacturing method of fiber reinforced composite material |
| CN108698268B (en) * | 2016-02-23 | 2020-11-17 | 东丽株式会社 | Method for producing fiber-reinforced composite material |
| US11001011B2 (en) | 2016-02-23 | 2021-05-11 | Toray Industries, Inc. | Method of producing fiber reinforced composite material |
| JP2018192725A (en) * | 2017-05-18 | 2018-12-06 | パナソニックＩｐマネジメント株式会社 | Composite laminate |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3011871B2 (en) | 2000-02-21 |
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