JP2020062832A - 金属張積層板および金属張積層板の製造方法 - Google Patents
金属張積層板および金属張積層板の製造方法 Download PDFInfo
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- JP2020062832A JP2020062832A JP2018196704A JP2018196704A JP2020062832A JP 2020062832 A JP2020062832 A JP 2020062832A JP 2018196704 A JP2018196704 A JP 2018196704A JP 2018196704 A JP2018196704 A JP 2018196704A JP 2020062832 A JP2020062832 A JP 2020062832A
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Abstract
Description
前記前駆積層体2を焼成炉11内で,前記前駆積層体2に作用する張力を解放した状態で,該前駆積層体2の水平面(搬送方向)に対して垂直方向で上下動(屈曲)させつつ熱処理することにより,液晶ポリエステル層5と前記金属層8を有する金属張積層板1を調製する工程と,を含むことを特徴とする(請求項7)。
本発明に係る液晶ポリエステル層5は,後述する液晶ポリエステルからなる好ましくは厚さ0.001〜0.1mmのフィルムであり,透湿度が0.5g/m2・24h以下である。
(1)−O−Ar1 −CO−
(2)−CO−Ar2 −CO−
(3)−X−Ar3 −Y−
(式中,Ar1 は,フェニレン基またはナフチレン基を表し,Ar2 は,フェニレン基,ナフチレン基または下記式(4)で示される基を表し,Ar3 はフェニレン基または下記式(4)で示される基を表し,XおよびYは,それぞれ独立に,OまたはNHを表す。なお,Ar1,Ar2およびAr3の芳香環に結合している水素原子は,ハロゲン原子,アルキル基またはアリール基で置換されていてもよい。)
(4)−Ar11−Z−Ar12−
(式中,Ar11,Ar12は,それぞれ独立に,フェニレン基またはナフチレン基を表し,Zは,O,COまたはSO2 を表す。)
(3’)−X−Ar3 −NH−
(式中,Ar3およびXは前記と同義である。)
次に,液状組成物3について説明する。
前記液状組成物3は,上述した液晶ポリエステル及び溶媒の2成分からなるものである。
本発明の金属張積層板1の金属層8に用いられる金属の種類としては,導電性を有していれば特に制限はなく,例えば,アルミニウム,銅,ステンレス,鉄,銀,パラジウム,ニッケル,クロム,モリブテン,タングステン,ジルコニウム,金,コバルト,チタン,タンタル,亜鉛,鉛,錫,シリコン,ビスマス,インジウム,及びこれらの合金等が挙げられる。これらの中では,銅又はその合金が好ましく使用する事ができる。
本発明の金属張積層板1の製造方法に関し,例として前記金属層8に銅箔8’を使用した銅張積層体(CCL)1’の製造方法について以下,述べる。
1’ 銅張積層体
2 前駆積層体
3 液状組成物
4 液晶ポリエステル前駆体層(液晶ポリエステル前駆体フィルム)
5 液晶ポリエステル層(液晶ポリエステルフィルム)
8 金属層
8’銅箔
11 焼成炉
12 乾燥機
13 加熱カレンダー
Claims (11)
- 液晶ポリエステル層と,該液晶ポリエステル層の表面に積層された金属層とを有する金属張積層板であって,前記液晶ポリエステル層と前記金属層との界面が入り組んだ構造となっていることを特徴する金属張積層板。
- 前記金属層が銅箔又は銅合金箔からなることを特徴とする請求項1記載の金属張積層板。
- 前記金属層の厚みが1〜50μmであることを特徴とする請求項1又は2記載の金属張積層板。
- 前記液晶ポリエステル層の厚みが1〜100μmであることを特徴とする請求項1〜3いずれか1項記載の金属張積層板。
- 前記液晶ポリエステル層が結晶性を有して無配向であることを特徴とする請求項1〜4いずれか1項記載の金属張積層板。
- 請求項1〜5いずれか1項記載の金属張積層板に導体パターンが形成されたプリント配線板。
- 液晶ポリエステル及び溶媒が含まれる液状組成物を金属層に流延して乾燥することにより,前記溶媒が含まれた状態の液晶ポリエステル前駆体層と前記金属層を有する前駆積層体を調製する工程と,
前記前駆積層体を焼成炉内で,前記前駆積層体に作用する張力を解放した状態で,該前駆積層体の水平面に対して垂直方向で上下動させつつ熱処理することにより,液晶ポリエステル層と前記金属層を有する金属張積層板を調製する工程と,
を含むことを特徴とする金属張積層板の製造方法。 - 前記焼成炉内に,連続して搬送される前記前駆積層体を挟んで上方及び下方に,前記前駆積層体の搬送方向に対して交互にエアーノズルを配設し,前記エアーノズルから前記前駆積層体に向けてエアを吹き付けて前記前駆積層体を,該前駆積層体の水平面に対して垂直方向で上下動させることを特徴とする請求項7記載の金属張積層板の製造方法。
- 前記焼成炉内を不活性ガスで充満させることを特徴とする請求項7又は8記載の金属張積層板の製造方法。
- 前記熱処理を遠赤外加熱により行うことを特徴とする請求項7〜9いずれか1項記載の金属張積層板の製造方法。
- 前記前駆積層体を,ゴム弾性層を有する金属基材に担持させてから,前記焼成炉内で熱処理することを特徴とする請求項7〜10いずれか1項記載の金属張積層板の製造方法。
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