JPH06315998A - Production of laminated sheet - Google Patents

Abstract

PURPOSE:To provide a laminated sheet excellent in appearance, electric properties and heat resistance. CONSTITUTION:In producing a laminated sheet by a method wherein long metal foils are continuously laminated to the upper surface and/or rear surface of a long resin impregnated base material obtained by impregnating a required number of long base materials with a resin from the upper surfaces thereof under heating in a no-pressure state to form a long laminate and this laminate is cut into a required dimension, impregnation-laminating processes are performed in a pressurized chamber.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、電子機器、電気機器、
コンビュ−タ−、通信機器等に用いられる積層板の製造
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 electronic equipment, electric equipment,
The present invention relates to a method for manufacturing a laminated board used for a computer, a communication device and the like.

【０００２】[0002]

【従来の技術】従来、無圧連続製造方法で得られる積層
板は、長尺基材の片面より樹脂を含浸し、長い距離を搬
送する間に含浸反対面から基材に内蔵する空気を押し出
すように自然含浸させているが、長距離搬送の間にべと
べと状の樹脂含浸基材に塵埃が付着したり、水分を吸着
したりして外観不良、電気性能や耐熱性の低下を招くと
いう問題があった。2. Description of the Related Art Conventionally, a laminated plate obtained by a pressureless continuous manufacturing method is impregnated with resin from one side of a long base material and extrudes air contained in the base material from the opposite surface while being conveyed over a long distance. Although it is naturally impregnated like this, the problem that dust sticks to the sticky resin-impregnated base material during long-distance transportation or it adsorbs moisture, resulting in poor appearance and poor electrical performance and heat resistance was there.

【０００３】[0003]

【発明が解決しようとする課題】従来の技術で述べたよ
うに、従来の無圧連続製造方法による積層板には外観不
良、電気性能や耐熱性の低下が発生しやすい。本発明は
従来の技術における上述の問題点に鑑みてなされたもの
で、その目的とするところは外観良好で電気性能や耐熱
性の低下がない積層板の無圧連続製造方法を提供するこ
とにある。As described in the prior art, the laminated plate produced by the conventional pressureless continuous manufacturing method is liable to have a poor appearance and deterioration in electrical performance and heat resistance. The present invention has been made in view of the above problems in the prior art, and an object thereof is to provide a pressureless continuous manufacturing method of a laminated plate which has a good appearance and does not deteriorate in electrical performance and heat resistance. is there.

【０００４】[0004]

【課題を解決するための手段】本発明は長尺基材の上面
より樹脂を含浸して得た所要枚数の長尺樹脂含浸基材の
上面及び又は下面に、長尺金属箔をラミネートした長尺
積層体を連続的に無圧で加熱積層成形後、所要寸法に切
断する積層板の製造方法において、含浸〜ラミネート工
程を与圧室に格納することを特徴とする積層板の製造方
法のため、塵埃が付着しやすいべとべと状の樹脂含浸基
材が与圧室内にあるので、塵埃が与圧室に侵入する恐れ
がなく、且つ樹脂含浸基材の水分吸着を防止することが
できたもので以下本発明を詳細に説明する。The present invention relates to a long-length metal foil laminated on the upper surface and / or the lower surface of a required number of long-resin-impregnated base materials obtained by impregnating a resin from the upper surface of the long-length base material. A method for manufacturing a laminated plate, which comprises continuously laminating and heating a standard length laminated body without pressure, and then cutting the laminate into a required size, wherein the impregnation-laminating step is stored in a pressurizing chamber. Since there is a sticky resin-impregnated base material in the pressurization chamber where dust is likely to adhere, there is no risk of dust entering the pressurization chamber and it is possible to prevent the resin-impregnated base material from adsorbing moisture. The present invention will be described in detail below.

【０００５】本発明に用いる長尺基材は、ガラス、セラ
ミック、アスベスト等の無機質繊維や、ビニルアルコ−
ル、ポリイミド、ポリエチレンテレフタレート、ポリブ
チレンテレフタレート、ポリアミド、ポリフエニレンサ
ルフアイド、ポリフエニレンオキサイド、フッ素樹脂等
の有機質繊維や木綿等の天然繊維からなる織布、不織
布、紙等で、これらを併用することもでき、その構成位
置は例えば芯部をガラス不織布、表面部をガラス布とす
るコンポジット構成にすることもできる。基材に含浸さ
せる樹脂としては、不飽和ポリエステル樹脂、フェノ−
ル樹脂、エポキシ樹脂、ジアリルフタレート樹脂、ビニ
ルエステル樹脂（エポキシアクリレート樹脂とも言う）
の単独樹脂、変性樹脂、混合樹脂が用いらる。無機質充
填材としてはタルク、クレ−、三酸化アンチモン、五酸
化アンチモン、珪酸カルシュウム、炭酸カルシュウム、
水酸化アルミニュ−ム、シリカ、ガラス粉、ガラスチョ
ップ等の無機質充填剤を添加することができる。又、無
機質充填材は樹脂との混合に先立ち、メタクリレートク
ロミッククロライド、ビニルトリクロロシラン、ビニル
トリスベータメトキシエトキシシラン、ガンマアミノプ
ロピルトリエトキシシラン等のカップリング剤で表面処
理しておいてから用いることができる。カップリング剤
は溶剤に溶解、分散させた希釈剤のかたちで無機質充填
材に添加、混合、乾燥させて表面処理することができ
る。かくして得られた無機質充填材含有樹脂は長尺基材
全てに用いてもよいが、芯部の長尺基材のみとし表裏部
となる長尺基材には無機質充填材を含有しない樹脂のみ
を含浸させてもよく任意である。含浸は１回のみでなく
同一の樹脂による複数回含浸や、同系樹脂で１次含浸を
低粘度樹脂とし、２次含浸をより高粘度樹脂による複数
回含浸としてもよく、また架橋剤や異系樹脂により１次
含浸、２次含浸というような複数回含浸にすることもで
きる。かくして得られた長尺樹脂含浸基材は必要とする
積層板厚みに応じて所要枚数用いることができる。長尺
金属箔としては銅、アルミニュウム、真鍮、ニッケル、
鉄等の単独、合金、複合箔が用いられ、必要に応じて金
属箔の片面に接着剤層を設けておくことができる。かく
して上記長尺樹脂含浸基材の上面及び又は下面に、上記
長尺金属箔をラミネートするものであるが、含浸〜ラミ
ネート工程を与圧室に格納することが必要である。与圧
の程度は特に限定するものではないが軽い与圧が好まし
い。例えば３００立方メートルの与圧室に３３０立方メ
ートルの清浄空気を送り込み循環させる程度である。
又、与圧室は除湿されていることが望ましい。除湿は水
蒸気分圧１１ｍｍＨｇ以下（２９℃）であることが好ま
しい。かくして得られた長尺積層体を無圧で加熱積層成
形した後、所要寸法に切断して積層板を得るものであ
る。長尺積層体の無圧積層成形一体化は樹脂、基材、厚
さ等で、硬化時間、硬化温度を選択することができる
が、硬化温度は６０〜１６０℃であることが望ましい。
切断後の積層板は、１５０〜２００℃で１０〜６０分間
アフターキュアーすることが積層板の歪みを無くするた
めに好ましく、アフターキュアー温度は樹脂のガラス転
移点（Ｔｇ）以上に加熱することが望ましい。なお必要
に応じてアフターキュアー後に急冷して外観をより良く
することができる。急冷は、低温の水、アルコール等の
液体や、低温の気体に入れて急冷するもので、２５℃以
下の水中に入れることが好ましい。以下本発明を実施例
に基づいて説明する。The long base material used in the present invention includes inorganic fibers such as glass, ceramics and asbestos, and vinyl alcohol.
Woven fabric, non-woven fabric, paper, etc. made of organic fibers such as polyester, polyimide, polyethylene terephthalate, polybutylene terephthalate, polyamide, polyphenylene sulfide, polyphenylene oxide, fluororesin, etc. It is also possible to adopt a composite structure in which the core part is made of glass nonwoven fabric and the surface part is made of glass cloth. As the resin with which the base material is impregnated, unsaturated polyester resin, phenol
Resin, epoxy resin, diallyl phthalate resin, vinyl ester resin (also called epoxy acrylate resin)
A single resin, a modified resin, or a mixed resin of is used. As the inorganic filler, talc, clay, antimony trioxide, antimony pentoxide, calcium silicate, calcium carbonate,
Inorganic fillers such as aluminum hydroxide, silica, glass powder and glass chops can be added. Also, the inorganic filler should be surface-treated with a coupling agent such as methacrylate chromic chloride, vinyltrichlorosilane, vinyltrisbetamethoxyethoxysilane, gammaaminopropyltriethoxysilane, etc. prior to mixing with the resin. it can. The coupling agent can be surface-treated by adding it to the inorganic filler in the form of a diluent dissolved or dispersed in a solvent, mixing it, and drying it. The inorganic filler-containing resin thus obtained may be used for all of the long base material, but only the resin not containing the inorganic filler is used for the long base material as the front and back portions only for the long base material of the core portion. It may be impregnated and is optional. The impregnation may be performed not only once but also multiple times with the same resin, or the primary impregnation with the same type of resin may be a low viscosity resin and the secondary impregnation may be multiple times with a higher viscosity resin. Multiple impregnations such as primary impregnation and secondary impregnation can be performed with a resin. The required number of long resin-impregnated base materials thus obtained can be used according to the required thickness of the laminated plate. As long metal foil, copper, aluminum, brass, nickel,
A single metal such as iron, an alloy, or a composite foil is used, and an adhesive layer can be provided on one surface of the metal foil if necessary. Thus, the long metal foil is laminated on the upper surface and / or the lower surface of the long resin-impregnated base material, but it is necessary to store the impregnation-laminating step in the pressurizing chamber. The degree of pressurization is not particularly limited, but light pressurization is preferable. For example, 330 cubic meters of clean air is fed into the pressure chamber of 300 cubic meters and circulated.
Further, it is desirable that the pressure chamber is dehumidified. Dehumidification is preferably performed at a water vapor partial pressure of 11 mmHg or less (29 ° C.). The long laminate thus obtained is heated and laminated without pressure, and then cut to a required size to obtain a laminate. In the pressureless lamination molding integration of the long laminate, the curing time and the curing temperature can be selected depending on the resin, the base material, the thickness, etc., but the curing temperature is preferably 60 to 160 ° C.
The laminated plate after cutting is preferably subjected to after-curing at 150 to 200 ° C. for 10 to 60 minutes in order to eliminate distortion of the laminated plate, and the after-curing temperature may be heated to the glass transition point (Tg) or higher of the resin. desirable. If desired, the appearance can be improved by quenching after after-curing. The rapid cooling is performed by cooling in a liquid such as low-temperature water or alcohol, or in a low-temperature gas, and is preferably cooled in water at 25 ° C. or lower. The present invention will be described below based on examples.

【０００６】[0006]

【実施例１】厚み１ｍｍ、幅１０５ｃｍのガラス不織布
に、クレーを５０重量％（以下単に％と記す）含むビニ
ルエステル樹脂（昭和高分子株式会社製、品番Ｒ８０６
−ＤＡ）を樹脂量が５０％になるように上面より含浸し
て得た長尺ビニルエステル樹脂含浸ガラス不織布基材１
枚の上下面に、厚み０．１５ｍｍ、幅１０５ｃｍの長尺
ガラス織布に、水酸化アルミニゥムを２５％含むビニル
エステル樹脂（昭和高分子株式会社製、品番Ｒ８０６−
ＤＡ）を樹脂量が５０％になるように上面より含浸して
得た長尺ビニルエステル樹脂含浸ガラス織布基材を各々
２枚移行させて配設後、ラミネートし更にその上下面に
幅１０５ｃｍ、厚さ０．０３５ｍｍの長尺銅箔をラミネ
ートしたが含浸〜ラミネート工程を与圧室に格納した。
与圧室は３００立方メートルで３３０立方メートルの清
浄空気を送り込み循環させた。かくして得られた長尺積
層体を無圧で、１１０℃で２０分間加熱積層成形後、１
００ｃｍ角に切断して厚さ１．２ｍｍの積層板を連続的
に得た。Example 1 A vinyl ester resin (manufactured by Showa Polymer Co., Ltd., product number R806) containing 50% by weight of clay (hereinafter simply referred to as%) in a glass nonwoven fabric having a thickness of 1 mm and a width of 105 cm.
-DA) long-length vinyl ester resin-impregnated glass non-woven fabric substrate 1 obtained by impregnating the same with a resin amount of 50% from the upper surface.
On the upper and lower surfaces of the sheet, a long glass woven cloth having a thickness of 0.15 mm and a width of 105 cm, and a vinyl ester resin containing 25% of aluminum hydroxide (manufactured by Showa Polymer Co., Ltd., product number R806-
DA) was impregnated into the resin so that the resin content was 50% from the upper surface, and two long vinyl ester resin-impregnated glass woven base materials were respectively transferred and arranged, and then laminated, and the upper and lower surfaces thereof had a width of 105 cm. A long copper foil having a thickness of 0.035 mm was laminated, but the impregnation-laminating step was stored in a pressurizing chamber.
The pressurizing chamber was 300 cubic meters, and 330 cubic meters of clean air was fed and circulated. The long laminate thus obtained was heated and laminated at 110 ° C. for 20 minutes without pressure, and then 1
It was cut into 00 cm squares to continuously obtain a laminated plate having a thickness of 1.2 mm.

【０００７】[0007]

【実施例２】与圧室の清浄空気を水蒸気分圧９ｍｍＨｇ
（２９℃）に除湿した以外は、実施例１と同様に処理し
て積層板を得た。[Embodiment 2] The clean air in the pressurizing chamber has a steam partial pressure of 9 mmHg.
A laminated plate was obtained by the same treatment as in Example 1 except that the dehumidification was carried out at (29 ° C.).

【０００８】[0008]

【実施例３】実施例２の積層板を１７５℃で３０分間ア
フターキュアーして積層板を得た。Example 3 The laminate of Example 2 was after-cured at 175 ° C. for 30 minutes to obtain a laminate.

【０００９】[0009]

【比較例】含浸〜ラミネート工程を与圧室に格納しない
以外は、実施例１と同様に処理して積層板を得た。[Comparative Example] A laminated plate was obtained by the same process as in Example 1 except that the impregnation-laminating process was not stored in the pressurizing chamber.

【００１０】実施例１乃至３と比較例の積層板の外観、
絶縁抵抗、耐熱性は表１のようである。積層板の絶縁抵
抗は常態、耐熱性はオーブン耐熱性（６０分）である。Appearance of laminated plates of Examples 1 to 3 and Comparative Example,
The insulation resistance and heat resistance are shown in Table 1. The insulation resistance of the laminate is normal, and the heat resistance is oven heat resistance (60 minutes).

【００１１】[0011]

【表１】 [Table 1]

【００１２】[0012]

【発明の効果】本発明は上述したごとく構成されてい
る。特許請求の範囲に記載した構成を有する積層板の製
造方法においては、得られる積層板の外観、電気性能、
耐熱性を大幅に向上させることができ、本発明の優れて
いることを確認した。The present invention is constructed as described above. In the method for producing a laminated board having the configuration described in the claims, the appearance of the obtained laminated board, the electrical performance,
It was confirmed that the heat resistance can be greatly improved and the present invention is excellent.

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 長尺基材の上面より樹脂を含浸して得た
所要枚数の長尺樹脂含浸基材の上面及び又は下面に、長
尺金属箔をラミネートした長尺積層体を連続的に無圧で
加熱積層成形後、所要寸法に切断する積層板の製造方法
において、含浸〜ラミネート工程を与圧室に格納するこ
とを特徴とする積層板の製造方法。1. A continuous laminate obtained by laminating a continuous metal foil on the upper surface and / or the lower surface of a required number of continuous resin-impregnated base materials obtained by impregnating a resin from the upper surface of the continuous base material. A method for manufacturing a laminated plate, which comprises heating and laminating without pressure, and then cutting it into a required size, wherein the impregnation-laminating step is stored in a pressurizing chamber. 【請求項２】 与圧室が除湿されていることを特徴とす
る請求項１に記載の積層板の製造方法。2. The method for manufacturing a laminated plate according to claim 1, wherein the pressurizing chamber is dehumidified. 【請求項３】 切断後、アフターキュアーすることを特
徴とする請求項１及び２に記載の積層板の製造方法。3. The method for producing a laminated board according to claim 1, wherein after cutting, after-curing is performed.