JP2004358481A - Method for producing resin-coated extremely thin metal strip, resin-coated extremely thin metal laminated strip, resin-metal complex extremely thin strip, resin-metal complex extremely thin laminated sheet and extremely thin metal sheet, and resin-coated extremely thin metal strip, resin-coated extremely thin metal laminated strip, resin-metal complex extremely thin strip, resin-metal complex extremely thin laminated strip and extremely thin metal strip, using them - Google Patents
Method for producing resin-coated extremely thin metal strip, resin-coated extremely thin metal laminated strip, resin-metal complex extremely thin strip, resin-metal complex extremely thin laminated sheet and extremely thin metal sheet, and resin-coated extremely thin metal strip, resin-coated extremely thin metal laminated strip, resin-metal complex extremely thin strip, resin-metal complex extremely thin laminated strip and extremely thin metal strip, using them Download PDFInfo
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Abstract
Description
【０００１】
【発明の属する技術分野】
本発明は、樹脂被覆金属板を用いて樹脂被覆極薄金属板を製造する方法、樹脂被覆極薄金属積層板を製造する方法、樹脂金属複合板を用いて樹脂金属複合極薄板を製造する方法、樹脂金属複合極薄積層板を製造する方法、極薄金属板を製造する方法、それらの製造方法を用いてなる樹脂被覆極薄金属板、樹脂被覆極薄金属積層板、樹脂金属複合極薄板、樹脂金属複合極薄積層板、および極薄金属板に関する。
【０００２】
【従来の技術】
近年、食品などの容器に用いる材料として、金属板に樹脂を被覆した樹脂被覆金属板が多用されているが、容器の軽量化および容器コストの低減の観点から樹脂被覆金属板の薄化が求められている。しかし、トータル厚さが０．１ｍｍ以下のような極薄の樹脂被覆金属板を製造することは、均一な厚さでこのような極薄の金属板を製造することが困難であることに加えて、特に被覆する樹脂を極薄にした場合に剛性が失われて搬送時や金属板に被覆する際にしわが生じやすく、実用的に安定して極薄樹脂被覆金属板を製造することは極めて困難となっている。
【０００３】
特許文献１には、プリント基板に用いる銅箔を、保管、積送、追加処理等の間における損傷から保護するために、樹脂フィルムと銅箔を反対に静電帯電させ、両者の間から空気を押し出す程度に樹脂フィルムと銅箔を押し合わせることにより、樹脂フィルムが除去可能に銅箔と結合され、樹脂フィルムが銅箔にしっかりとくっついている状態で銅箔の移動や追加処理ができるようにすることが開示されている。この方法は薄い樹脂フィルムと銅箔を静電気を用いて積層して固着する方法であるが、樹脂フィルムや銅箔がさらに薄化した場合に搬送等のハンドリングが困難になり、この公報記載の積層固着技術を用いて極薄の樹脂積層金属板を安定して製造することは困難である。
【０００４】
特許文献２には、銅または銅合金のコイル状銅箔を２枚重ねてリバース圧延することにより、重ね合わせ面が粗面化してポリイミド樹脂に貼り付けた場合に密着性が向上することが開示されている。このように金属同士を重ねて圧延する重ね圧延はアルミニウム箔等の製造に用いられており、アルミニウムのような軟質の金属では容易に適用できるが、鋼板などの硬質の金属板を重ね圧延する場合、重ね合わせの誤差（重ね部のズレ）があると幅方向のエッジ部分で耳切れが生じて板が千切れてしまい、圧延することができなくなる。
【０００５】
本出願に関する先行技術文献情報として次のものがある。
【特許文献１】
特開平０５−２１７４４６号公報
【特許文献２】
特開平１１−２７７１０６号公報
【０００６】
【発明が解決しようとする課題】
本発明は、金属板の厚さが０．１ｍｍ以下である樹脂被覆極薄金属板、樹脂金属複合極薄板、樹脂被覆極薄金属積層板、樹脂金属複合極薄積層板の製造方法、またはそれらの樹脂被覆極薄金属板、樹脂金属複合極薄板、樹脂被覆極薄金属積層板、樹脂金属複合極薄積層板を用いて極薄金属板を安定して製造可能とする製造方法、それらの製造方法を用いて作成した極薄の樹脂積層金属板、樹脂金属複合板、樹脂被覆金属積層板、樹脂金属複合積層板、および極薄の金属板を提供することを目的とする。
【０００７】
【課題を解決するための手段】
本発明の樹脂被覆極薄金属板の製造方法は、金属板の両面に樹脂を被覆してなる樹脂被覆金属板を、圧延ロールを用いて圧延することを特徴とする樹脂被覆極薄金属板の製造方法（請求項１）であり、また
上記請求項１の製造方法において、潤滑液および／または冷却液を用いることなく圧延することを特徴とする（請求項２）。
【０００８】
また本発明の樹脂被覆極薄金属積層板の製造方法は、金属板の少なくとも片面に樹脂を被覆してなる少なくとも２枚の樹脂被覆金属板を、金属面同士が当接することがなく、かつ重ね合わせ後の最上部および最下部が樹脂面となるように重ね合わせて接着して成る樹脂被覆金属積層板とし、該樹脂面が圧延ロールと接するように、圧延ロールを用いて圧延することを特徴とする樹脂被覆極薄金属積層板の製造方法（請求項３）、または
金属板の両面に樹脂を被覆して樹脂被覆金属板とし、この樹脂被覆金属板を少なくとも２枚重ね合わせて接着し、圧延ロールを用いて圧延することを特徴とする樹脂被覆極薄金属積層板の製造方法（請求項４）であり、
上記請求項３または４の製造方法において、潤滑液および／または冷却液を用いることなく圧延することを特徴とする（請求項５）。
【０００９】
さらに本発明の樹脂金属複合極薄板の製造方法は、２枚の金属板の間に樹脂を介在させてなる樹脂金属複合板を、圧延ロールを用いて圧延することを特徴とする樹脂金属複合極薄板の製造方法（請求項６）であり、
上記請求項６の製造方法において、潤滑液および／または冷却液を用いて圧延することを特徴とする（請求項７）。
【００１０】
またさらに本発明の樹脂金属複合極薄積層板の製造方法は、金属板の少なくとも片面に樹脂を被覆してなる少なくとも２枚の樹脂被覆金属板を、金属面同士が当接することがなく、かつ重ね合わせ後の最上部および最下部が金属面となるように重ね合わせて接着して成る樹脂金属複合積層板とし、該金属面が圧延ロールと接するように重ね合わせて接着し、圧延ロールを用いて圧延することを特徴とする樹脂金属複合極薄積層板の製造方法（請求項８）であり、
上記請求項８の製造方法において、潤滑液および／または冷却液を用いて圧延することを特徴とする（請求項９）。
【００１１】
本発明の極薄金属板の製造方法は、上記請求項１または２の樹脂被覆極薄金属板の製造方法を用いて樹脂被覆極薄金属板を作成した後、樹脂被覆極薄金属板から樹脂を剥離除去することを特徴とする極薄金属板の製造方法（請求項１０）、または
上記請求項６または７の樹脂金属複合極薄板の製造方法を用いて樹脂金属複合極薄板を作成した後、樹脂金属複合極薄板から樹脂を剥離除去することを特徴とする極薄金属板の製造方法（請求項１１）または、
上記請求項３〜５の樹脂被覆極薄金属積層板の製造方法を用いて樹脂被覆極薄金属積層板を作成した後、樹脂被覆極薄金属積層板から樹脂を剥離除去することを特徴とする極薄金属板の製造方法（請求項１２）、または
上記請求項８または９の樹脂金属複合極薄積層板の製造方法を用いて樹脂金属複合極薄積層板を作成した後、樹脂金属複合極薄積層板から樹脂を剥離除去することを特徴とする極薄金属板の製造方法（請求項１３）である。
【００１２】
本発明の樹脂被覆極薄金属板は、上記（請求項１または２）の樹脂被覆極薄金板の製造方法を用いて製造してなる、両面に樹脂を積層してなる樹脂被覆極薄金属板（請求項１４）であり、
上記請求項１４の樹脂被覆極薄金属板において、金属板の厚さが０．０１〜０．１ｍｍであることを特徴とする（請求項１５）。
また本発明の樹脂金属複合極薄板は、上記（請求項６または７）の樹脂金属複合極薄板の製造方法を用いて製造してなる、樹脂金属複合極薄板（請求項１６）であり、
上記請求項１６の樹脂金属複合極薄板において、金属板の厚さが０．０１〜０．１ｍｍであることを特徴とする（請求項１７）。
【００１３】
本発明の樹脂被覆極薄金属積層板は、上記請求項３〜５の樹脂被覆極薄金属積層板の製造方法を用いて製造してなる樹脂被覆極薄金属積層板（請求項１８）であり、
上記請求項１８の樹脂被覆極薄金属積層板において、各金属板の厚さが０．０１〜０．１ｍｍであることを特徴とする（請求項１９）。
また本発明の樹脂金属複合極薄積層板は、上記請求項８または９の樹脂金属複合極薄積層板の製造方法を用いて製造してなる樹脂金属複合極薄積層板（請求項２０）であり、
上記請求項２０の樹脂金属複合極薄積層板において、各金属板の厚さが０．０１〜０．１ｍｍであることを特徴とする（請求項２１）。
【００１４】
本発明の金属板は、上記請求項１０〜１３の極薄金属板の製造方法を用いて製造してなる極薄金属板（請求項２２）であり、
上記請求項２２の樹脂被覆極薄金属積層板において、金属板の厚さが０．０１〜０．１ｍｍであることを特徴とする（請求項２３）。
【００１５】
【発明の実施の形態】
以下、本発明を詳細に説明する。本発明においては、板厚が０．０５〜０．３ｍｍの冷延鋼板やアルミニウム合金板などの金属板に厚さが１０〜２００μｍの樹脂を積層してなる樹脂被覆金属板を、潤滑液や冷却液を使用することなく圧延することにより、クリーンな環境で樹脂被覆極薄金属板、樹脂金属複合極薄板、樹脂被覆極薄金属積層板、樹脂金属複合極薄積層板もしくは極薄金属板を製造するものである。
【００１６】
まず、本発明の樹脂被覆極薄金属板、樹脂金属複合極薄板、樹脂被覆極薄金属積層板、樹脂金属複合極薄積層板、極薄金属板の出発材として用いる樹脂被覆金属板について説明する。樹脂を被覆する基板としての金属板としては、冷延鋼板、および冷延鋼板に錫、ニッケル、亜鉛、銅などのめっき、またはこれらのめっき金属の２種以上からなる合金めっきを施したもの、電解クロム酸処理や浸漬クロム酸処理などのクロメート処理、リン酸処理、ノンクロム処理（バナジウム塩処理）などの化成処理を施したもの、さらにめっきや合金めっきを施した後にさらにこれらの化成処理を施したものや、アルミニウム合金板、およびアルミニウム合金板にアルマイト処理やクロメート処理、リン酸処理、リン酸クロメート処理、ノンクロム処理（ジルコニウム塩処理）などの化成処理を施したもの、またはさらにステンレス鋼板、銅板、真鍮、青銅、白銅などの銅合金板、ニッケル板やインバーなどのニッケル合金板、および銅板や銅合金板に前記の冷延鋼板に適用する化成処理を施したものなどを用いることができる。これらの金属板の板厚は、樹脂を被覆する場合の作業性や、樹脂被覆金属板または樹脂金属複合板を圧延した後の樹脂の接着強度などの観点から０．０５〜０．３ｍｍ程度であることが好ましい。
【００１７】
上記の金属板に被覆する樹脂としては、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、ポリエチレンナフタレート、エチレンテレフタレート／エチレンイソレフタレート共重合体、またはこれらの２種以上をブレンドしたものなどのポリエステル樹脂、ポリエチレン、ポリプロピレン、エチレン／プロピレン共重合体、またはこれらをマレイン酸などのカルボキシル基を有する酸で変性してなるものなどのポリオレフィン樹脂、６−ナイロン、６．１０−ナイロン、６，６−ナイロンなどのポリアミド樹脂などを用いることができる。これらの樹脂の厚さは金属板に被覆する場合の作業性や、樹脂被覆金属板を圧延した後の金属板に対する接着強度などの観点から１０〜２００μｍ程度であることが好ましい。
【００１８】
上記の金属板に上記の樹脂を被覆して出発材として用いる樹脂被覆金属板とする場合、被覆方法として、公知の熱接着法を用いて樹脂を金属板の片面または両面に直接熱接着してもよいし、金属板と樹脂の間に接着剤を介して接着してもよい。このようにして得られる樹脂被覆金属板は、金属板の両面に樹脂を被覆した場合は単層板として圧延してもよいし、後記するように金属板の両面または片面に樹脂を被覆した単層板を複数層積層して樹脂被覆金属積層板として圧延してもよい。単層板の積層に際して、単層板の樹脂面が他の単層板の金属面または樹脂面と接する場合は上記の熱接着法または金属板と樹脂の間に接着剤を介する方法で接着積層する。単層板の金属面が他の単層板の金属面と接する場合は金属板と樹脂の間に接着剤を介する方法で接着積層する。
【００１９】
２枚の金属板の間に樹脂を介在させてなる樹脂金属複合板を出発材として用いる場合も、公知の熱接着法を用いて樹脂を介して２枚の金属板に直接熱接着してもよいし、金属板と樹脂の間にさらに接着剤を介して接着してもよい。このようにして得られる樹脂金属複合板は、単層板として圧延してもよいし、後記するように複数の単層の樹脂金属複合板同士を樹脂を介してまたは樹脂と接着剤を介して積層して樹脂金属複合積層板として圧延してもよい。
【００２０】
次に、本発明の圧延方法について説明する。上記の出発材である樹脂被覆金属板、樹脂被覆金属積層板、樹脂金属複合板、樹脂金属複合積層板のいずれかを、通常の単スタンドミル、タンデムミル、リバースミルなどの圧延装置を用いて冷間圧延して極薄化する。樹脂被覆金属板や樹脂被覆金属積層板の冷間圧延に際して金属板に被覆した樹脂が圧延ロールに接する場合（金属板の両面に樹脂を被覆した単層板の場合、または樹脂被覆金属積層板において最上層と最下層が樹脂面である場合）は、圧延油などの潤滑液やエマルジョンなど冷却液を使用することなく、クリーンな環境で圧延することができる。また、圧延油などの潤滑液の供給設備や循環（排水）設備が不要となるので圧延装置をコンパクト化することが可能である。しかし、高速で圧延する場合や高圧下率で圧延する場合、加工熱による温度上昇が大きくなり、樹脂が軟化したり溶融して圧延ロールに付着して圧延不能になりやすくなるので、圧延ロール内部の冷媒液による冷却を強化したり、強制空冷装置を設けて圧延ロールおよび／または圧延ロールと樹脂が接触する部分に冷風を吹き付けて冷却して、加工熱による温度上昇を抑制する必要がある。
【００２１】
上記の樹脂金属複合板や樹脂金属複合積層板、または金属板の片面に樹脂を被覆した単層板、または樹脂被覆金属積層板において最上層と最下層のいずれか一方、または両方が金属面である場合は、通常の金属板の圧延のように、潤滑液および／または冷却液を用いて圧延する。
【００２２】
また、金属板の両面に樹脂を被覆した単層板、または樹脂被覆金属積層板において最上層と最下層が樹脂面である樹脂被覆金属積層板を圧延する場合は、金属板が樹脂に保護された状態で、圧延ロールに接触することなく圧延されるので、金属板表面にスクラッッチ等の微小疵を生じることなく圧延することができる。さらに、単層の樹脂被覆金属板や樹脂金属複合板を積層して樹脂被覆金属積層板や樹脂金属複合積層板とする積層作業において、各単層板を精度良く重ね合わせ積層して樹脂被覆金属積層板や樹脂金属複合積層板とすることが可能であるので、これらの樹脂被覆金属積層板や樹脂金属複合積層板を圧延して樹脂被覆極薄金属積層板や樹脂金属複合極薄積層板とする際に、板幅方向端部の重ね合わせのずれに起因する耳切れを生じることがない。
【００２３】
本発明の樹脂被覆極薄金属板、樹脂被覆極薄金属積層板、樹脂金属複合極薄板、樹脂金属複合極薄積層板の製造方法、すなわち樹脂被覆金属板、樹脂被覆金属積層板、樹脂金属複合板、樹脂金属複合積層板の圧延方法を、以下図面を参照しながら説明する。
本発明の樹脂被覆金属板の圧延方法は、
（１）図１に示すように、金属板２０の両面に樹脂１０を被覆してなる単層の樹脂積層金属板１ａを１枚、圧延ロール５ａ、および５ｂからなる圧延装置に通し、潤滑液および冷却液を用いずに圧延する。このようにして本発明の樹脂被覆極薄金属板が得られる。
【００２４】
本発明の樹脂被覆金属積層板の圧延方法は、
（２）図２に示すように、金属板２０の片面に樹脂１０を被覆してなる樹脂被覆金属板（図中２ａで表示）を複数枚、および重ね合わせの最下部の樹脂被覆金属板として、図１に示した金属板２０の両面に樹脂１０を被覆してなる樹脂被覆金属板１ａを、図２に示すように金属面同士が当接することがないように重ね合わせて積層してなる樹脂被覆金属積層板３０を、圧延ロール５ａ、および５ｂからなる圧延装置に通し、潤滑液および冷却液を用いずに圧延する。
（３）図３に示すように、図１に示した金属板２０の両面に樹脂１０を被覆してなる樹脂被覆金属板１ａを複数枚重ね合わせて積層してなる樹脂被覆金属積層板３０を、圧延ロール５ａ、および５ｂからなる圧延装置に通し、潤滑液および冷却液を用いずに圧延する。このように（２）または（３）の方法を用いることにより、本発明の樹脂被覆極薄金属積層板が得られる。
【００２５】
本発明の樹脂金属複合板の圧延方法は、
（４）図４に示すように、樹脂１０の両側に金属板２０を貼付してなる樹脂金属複合板４０を１枚、圧延ロール５ａ、および５ｂからなる圧延装置に通し、潤滑液および／または冷却液を用いて圧延する。このようにして本発明の樹脂金属複合極薄板が得られる。
【００２６】
本発明の樹脂金属複合積層板の圧延方法は、
（５）図５に示すように、図４に示した樹脂金属複合板４０を、樹脂１０ａを介して複数枚重ね合わせて積層してなる樹脂金属複合積層板５０を、圧延ロール５ａ、および５ｂからなる圧延装置に通し、潤滑液および／または冷却液を用いて圧延する。このようにして本発明の樹脂金属複合極薄積層板が得られる。
【００２７】
上記の（１）の方法を用いて圧延して得られる樹脂被覆極薄金属板、および上記の（４）の方法を用いて圧延して得られる樹脂金属複合極薄板の厚さは０．１ｍｍ以下であることが好ましい。上記の方法を用いて厚さが０．１ｍｍを超える樹脂被覆極薄金属板や樹脂金属複合極薄板を得ることは可能であるが、本発明の製造方法を用いずとも製造できる。圧下率を高めて０．０１ｍｍ未満の厚さの樹脂被覆極薄金属板や樹脂金属複合極薄板を得ることは、樹脂層が剥離したり樹脂層に亀裂を生じたりするので困難である。このようにして製造された樹脂被覆極薄金属板や樹脂金属複合極薄板においては、圧下率の増大に伴って金属板に対する樹脂の接着強度が低下するが、圧延後に樹脂のガラス転移以上の温度、より好ましくは樹脂の結晶化温度以上の温度に加熱することによって接着強度を上昇させることができる。
【００２８】
本発明の極薄金属板は、上記の（１）〜（５）のいずれかの圧延方法を用いて樹脂被覆極薄金属板、樹脂被覆極薄金属積層板、樹脂金属複合極薄板、樹脂金属複合極薄積層板のいずれかを作成した後、樹脂層を剥離することにより得ることができる。このようにして得られる極薄金属板においても厚さは０．１ｍｍ以下であることが好ましい。上記の方法を用いて厚さが０．１ｍｍを超える極薄金属板を得ることは可能であるが、本発明の製造方法を用いずとも製造できる。樹脂被覆極薄金属板や樹脂金属複合極薄板におけるのと同様に、圧下率を高めて０．０１ｍｍ未満の厚さの極薄金属板を得ることは、素材となる樹脂被覆金属板や樹脂金属複合板の圧延に際して樹脂層が剥離したり樹脂層に亀裂を生じたりするので困難である。上記の（１）〜（３）のいずれかの圧延方法を用いて作成した樹脂被覆極薄金属板または樹脂被覆極薄金属積層板から樹脂層を剥離する場合は、金属板の表面に樹脂が積層された状態で圧延加工され、圧延後に樹脂が剥離されるので、圧延加工後まで金属面が樹脂で保護されるので、金属板表面にスクラッチなどの微小疵のない極薄金属板が得られる。上記の（４）または（５）の圧延方法を用いて作成した樹脂金属複合極薄板または樹脂金属複合極薄積層板から樹脂層を剥離して極薄金属板を得る場合は、最上層および最下層の金属板はロールと接触するので、金属板表面にスクラッチなどの微小疵のない極薄金属板が求められる場合は、これらの最上層および最下層の２枚の極薄金属板以外を採用すればよい。
【００２９】
【実施例】
以下、実施例を示して本発明をさらに詳細に説明する。
（実施例１）
厚さ：０．２４ｍｍの電解クロム酸処理鋼板の両面に、接着剤としてＵＶ硬化型プライマーを用いて厚さ：２０μｍのポリエチレンテレフタレートフィルムを接着して樹脂被覆鋼板とした。この樹脂被覆鋼板をリバース圧延機を用い、潤滑油や冷却水を用いることなく、ドライ圧延により鋼板の厚さが０．０１ｍｍとなるまで圧延し樹脂被覆極薄鋼板とした。この樹脂積層極薄鋼板にエリクセン張出加工を施したところ、張出量：３ｍｍまで樹脂が剥離したり樹脂に亀裂を生じることなく成形加工可能であった。
【００３０】
（実施例２）
厚さ：０．２４ｍｍのステンレス鋼板（ＪＩＳ：３０４）の両面に、厚さ：２０μｍのマレイン酸変性ポリエチレンフィルムを直接熱接着して被覆し、樹脂被覆ステンレス鋼板とした。この樹脂被覆ステンレス鋼板をリバース圧延機を用い、潤滑油や冷却水を用いることなく、ドライ圧延により厚さが０．０８ｍｍとなるまで圧延し、樹脂被覆極薄ステンレス鋼板とした。この樹脂被覆極薄ステンレス鋼板からマレイン酸変性ポリエチレンフィルムを剥離し、厚さ：０．０６９ｍｍの極薄ステンレス鋼板を得た。
【００３１】
（実施例３）
厚さ：０．１５ｍｍの電解クロム酸処理鋼板の片面に、エポキシ−フェノール系接着剤を介して、厚さ：２０μｍのポリエチレンテレフタレートフィルムを接着して片面樹脂被覆鋼板とした。また、同様の電解クロム酸処理鋼板の両面に、上記と同様にして同様のポリエチレンテレフタレートフィルムを接着して両面樹脂被覆鋼板とした。この両面樹脂被覆鋼板の片面に、エポキシ−フェノール系接着剤を介して、上記の片面樹脂被覆鋼板を接着して２層の樹脂被覆鋼板とした。同様にしてこの２層の樹脂被覆鋼板に順次上記と同様にして作成した片面樹脂被覆鋼板を接着して上記の両面樹脂被覆鋼板が重ね合わせの最下部となるようにして、両面樹脂積層鋼板の上に片面樹脂積層鋼板を３枚、鋼板面同士が当接することがないようにしてトータル厚さ：０．７ｍｍの樹脂被覆鋼積層板を作成した。この板樹脂被覆鋼積層板をリバース圧延機により、エマルジョン潤滑液を用いてトータル厚さ：０．２４ｍｍとなるまで圧延したが、耳切れを生じることなく圧延することが可能であった。このようにして得られた樹脂被覆極薄鋼積層板からポリエチレンテレフタレートフィルムおよびエポキシ−フェノール系接着剤を剥離除去し、厚さ：０．０５１ｍｍの極薄鋼板を得た。
【００３２】
（実施例４）
厚さ：０．０６ｍｍの２枚の冷延鋼板の間に２０μｍのポリエチレンテレフタレートフィルムを挟んで熱接着して、樹脂鋼複合板を作成した。この樹脂鋼複合板をリバース圧延機により、エマルジョン潤滑液を用いて鋼板の厚さが０．０１ｍｍとなるまで圧延し樹脂鋼複合極薄板とした。この樹脂鋼複合極薄板にエリクセン張出加工を施したところ、張出量：２．５ｍｍまで樹脂が剥離したり樹脂に亀裂を生じることなく成形加工可能であった。
【００３３】
（実施例５）
厚さ：０．０６ｍｍの２枚の冷延鋼板の間に２０μｍのポリエチレンテレフタレートフィルムを挟んで熱接着して、樹脂鋼複合板を作成した。この樹脂鋼複合板を２組作成し、それらの樹脂鋼複合板の間に上記と同様のポリエチレンテレフタレートフィルムを挟んで熱接着して、２重の樹脂鋼複合積層板を作成した。次いでこの２重の樹脂鋼複合積層板と前記と同様の樹脂鋼複合板を準備し、その間に上記と同様のポリエチレンテレフタレートフィルムを挟んで熱接着して、３重の樹脂鋼複合積層板を作成し、トータル厚さ：０．４６ｍｍの樹脂鋼複合積層板とした。この樹脂鋼複合積層板をリバース圧延機を用い、潤滑油や冷却水を用いて圧延し、トータル厚さ：０．１１ｍｍとなるまで圧延したが、耳切れを生じることなく圧延することが可能であった。このようにして得られた樹脂鋼複合積層板からポリエチレンテレフタレートフィルムを剥離除去し、厚さ：０．０１４ｍｍの極薄鋼板を得た。
【００３４】
【発明の効果】
本発明の樹脂被覆極薄金属板は、金属板の両面に樹脂を積層してなる樹脂被覆金属板を１枚、潤滑液や冷却液を用いずに圧延することにより製造される。本発明の樹脂被覆極薄金属積層板は、金属板の片面に樹脂を被覆してなる樹脂被覆金属板、および／または金属板の両面に樹脂を被覆してなる樹脂被覆金属板を複数枚重ね合わせて樹脂被覆金属積層板とし、この樹脂被覆金属積層板を潤滑液や冷却液を用いずに圧延することにより製造される。そのため、クリーンな環境で圧延することが可能であり、圧延油などの潤滑剤の供給設備や循環（排水）設備が不要となるので圧延装置をコンパクト化することが可能であり、圧延前の潤滑液の塗布作業や圧延後の脱脂洗浄作業も不要となる。また、本発明の樹脂金属複合極薄積層板は樹脂の両側に金属板を貼付してなる樹脂金属複合板を樹脂を介して複数枚重ね合わせて積層して樹脂金属複合積層板とし、この樹脂金属複合積層板を潤滑液および／または冷却液を用いて圧延することにより製造される。このように、金属板が樹脂に保護された状態で、圧延ロールに接触することなく圧延されるので、金属板表面にスクラッチ等の微小疵を生じることなく圧延することができる。さらにまた、本発明の製造方法によると、単層の樹脂被覆金属板や樹脂金属複合板を積層して樹脂被覆金属積層板や樹脂金属複合板とする積層作業において各単層板を精度良く重ね合わせ積層して樹脂被覆金属積層板や樹脂金属複合積層板とすることが可能であるので、これらの樹脂被覆金属積層板板や樹脂金属複合積層板を圧延して樹脂被覆極薄金属積層板や樹脂金属複合極薄積層板とする際に、板幅方向端部の重ね合わせのずれに起因する耳切れを生じることがない。
【図面の簡単な説明】
【図１】本発明の樹脂被覆極薄金属板の製造方法の一例を示す概略図。
【図２】本発明の樹脂被覆極薄金属積層板の製造方法の一例を示す概略図。
【図３】本発明の樹脂被覆極薄金属積層板の製造方法の他の一例を示す概略 図。
【図４】本発明の樹脂金属複合極薄板の製造方法の一例を示す概略図。
【図５】本発明の樹脂金属複合極薄積層板の製造方法の一例を示す概略図。
【符号の説明】
１ａ：両面樹脂被覆金属板
２ａ：片面樹脂被覆金属板
５ａ：圧延ロール
５ｂ：圧延ロール
１０：樹脂
１０ａ：樹脂
２０：金属板
３０：樹脂被覆金属積層板
４０：樹脂金属複合板
５０：樹脂金属複合積層板[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for producing a resin-coated ultra-thin metal plate using a resin-coated metal plate, a method for producing a resin-coated ultra-thin metal laminate, and a method for producing a resin-metal composite ultra-thin plate using a resin-metal composite plate , Method of manufacturing resin-metal composite ultra-thin laminate, method of producing ultra-thin metal plate, resin-coated ultra-thin metal plate, resin-coated ultra-thin metal laminate, resin-metal composite ultra-thin plate using those production methods , A resin-metal composite ultra-thin laminate, and an ultra-thin metal plate.
[0002]
[Prior art]
In recent years, a resin-coated metal plate in which a metal plate is coated with a resin has been widely used as a material for a container of food or the like. From the viewpoint of reducing the weight of the container and reducing the cost of the container, it is required to make the resin-coated metal plate thinner. Have been. However, producing an ultra-thin resin-coated metal plate having a total thickness of 0.1 mm or less is difficult in addition to producing such an ultra-thin metal plate with a uniform thickness. In particular, when the resin to be coated is made extremely thin, rigidity is lost and wrinkles are likely to occur during transportation and when coating the metal plate, and it is extremely difficult to stably produce an ultrathin resin-coated metal plate practically. It has become difficult.
[0003]
Patent Document 1 discloses that, in order to protect a copper foil used for a printed circuit board from damage during storage, shipping, additional processing, and the like, the resin film and the copper foil are oppositely electrostatically charged, and air is supplied between the two. By pressing the resin film and the copper foil to the extent that they extrude, the resin film is removably combined with the copper foil, so that the copper foil can be moved and further processed while the resin film is firmly attached to the copper foil. Is disclosed. This method is a method of laminating and fixing a thin resin film and a copper foil using static electricity. However, when the resin film or the copper foil is further thinned, handling such as transportation becomes difficult, and the lamination described in this publication is difficult. It is difficult to stably manufacture an ultra-thin resin-laminated metal plate using the fixing technique.
[0004]
Patent Literature 2 discloses that by laminating two copper or copper alloy coiled copper foils and performing reverse rolling, the superimposed surface is roughened to improve adhesion when applied to a polyimide resin. Have been. Lap rolling, in which metals are rolled over each other, is used in the production of aluminum foil and the like, and can be easily applied to soft metals such as aluminum. If there is an error in superposition (deviation of the superimposed portion), the edge is cut off at the edge portion in the width direction, the plate is cut off, and rolling cannot be performed.
[0005]
Prior art document information on the present application includes the following.
[Patent Document 1]
JP 05-217446 A
[Patent Document 2]
JP-A-11-277106
[0006]
[Problems to be solved by the invention]
The present invention relates to a method for producing a resin-coated ultra-thin metal plate, a resin-metal composite ultra-thin plate, a resin-coated ultra-thin metal laminate, a resin-metal composite ultra-thin laminate in which the thickness of the metal plate is 0.1 mm or less, or Production method for stably producing ultra-thin metal plates using resin-coated ultra-thin metal plates, resin-metal composite ultra-thin plates, resin-coated ultra-thin metal laminates, and resin-metal composite ultra-thin laminates It is an object of the present invention to provide an ultra-thin resin laminated metal plate, a resin-metal composite plate, a resin-coated metal laminated plate, a resin-metal composite laminated plate, and an ultra-thin metal plate prepared by the method.
[0007]
[Means for Solving the Problems]
The method for producing a resin-coated ultrathin metal plate of the present invention is characterized in that a resin-coated metal plate obtained by coating both surfaces of a metal plate with a resin is rolled using a rolling roll. A manufacturing method (claim 1);
In the manufacturing method of the first aspect, rolling is performed without using a lubricating liquid and / or a cooling liquid (claim 2).
[0008]
Further, the method for producing a resin-coated ultrathin metal laminate of the present invention is characterized in that at least two resin-coated metal plates obtained by coating at least one surface of a metal plate with a resin are stacked without contact between the metal surfaces. A resin-coated metal laminated plate is formed by laminating and bonding together such that the uppermost portion and the lowermost portion after bonding are resin surfaces, and rolling is performed using a rolling roll such that the resin surface is in contact with the rolling roll. A method for producing a resin-coated ultrathin metal laminate (claim 3), or
A resin-coated ultra-thin metal laminate, characterized in that a resin-coated metal plate is coated on both sides of a metal plate to form a resin-coated metal plate, at least two of the resin-coated metal plates are superimposed and bonded, and rolled using a rolling roll. (Claim 4).
In the manufacturing method according to the third or fourth aspect, rolling is performed without using a lubricating liquid and / or a cooling liquid (claim 5).
[0009]
Further, the method for producing a resin-metal composite ultra-thin sheet according to the present invention is characterized in that a resin-metal composite sheet obtained by interposing a resin between two metal sheets is rolled using a rolling roll. A manufacturing method (claim 6);
In the manufacturing method according to the sixth aspect, rolling is performed using a lubricating liquid and / or a cooling liquid (claim 7).
[0010]
Still further, the method for producing a resin-metal composite ultra-thin laminate of the present invention is characterized in that at least two resin-coated metal plates obtained by coating at least one surface of a metal plate with a resin do not contact metal surfaces, and A resin-metal composite laminate is obtained by laminating and bonding so that the uppermost portion and the lowermost portion after lamination become metal surfaces, and the metal surface is superimposed and bonded so that the metal surface is in contact with a rolling roll, using a rolling roll. And a method for producing a resin-metal composite ultra-thin laminate (claim 8),
In the manufacturing method according to the eighth aspect, rolling is performed using a lubricating liquid and / or a cooling liquid (claim 9).
[0011]
The method for producing an ultra-thin metal sheet according to the present invention comprises: preparing a resin-coated ultra-thin metal sheet using the method for producing a resin-coated ultra-thin metal sheet according to claim 1 or 2; A method for producing an ultra-thin metal plate, characterized in that:
A method for producing an ultra-thin metal sheet, comprising: preparing a resin-metal composite ultra-thin sheet using the method for producing a resin-metal composite ultra-thin sheet according to claim 6 or 7; The method (claim 11) or
A resin-coated ultra-thin metal laminate is produced using the method for producing a resin-coated ultra-thin metal laminate according to any one of claims 3 to 5, and then the resin is peeled off from the resin-coated ultra-thin metal laminate. A method for producing an ultrathin metal plate (claim 12), or
A resin-metal composite ultra-thin laminate is produced using the method for producing a resin-metal composite ultra-thin laminate according to claim 8 or 9, and then the resin is peeled off from the resin-metal composite ultra-thin laminate. A method for manufacturing an ultrathin metal plate (claim 13).
[0012]
The resin-coated ultra-thin metal plate of the present invention is produced by using the above-mentioned (claim 1 or 2) method for producing a resin-coated ultra-thin metal plate, and is formed by laminating a resin on both surfaces. A plate (claim 14);
The resin-coated ultrathin metal plate according to claim 14 is characterized in that the thickness of the metal plate is 0.01 to 0.1 mm (claim 15).
Further, the resin-metal composite ultra-thin plate of the present invention is a resin-metal composite ultra-thin plate (claim 16) produced by using the above-mentioned (claim 6 or 7) method for producing a resin-metal composite ultra-thin plate,
In the resin-metal composite ultrathin plate according to
[0013]
The resin-coated ultra-thin metal laminate of the present invention is a resin-coated ultra-thin metal laminate manufactured by using the above-mentioned method for producing a resin-coated ultra-thin metal laminate (claim 18). ,
The resin-coated ultrathin metal laminate according to claim 18 is characterized in that each metal plate has a thickness of 0.01 to 0.1 mm (claim 19).
Further, the resin-metal composite ultra-thin laminate according to the present invention is a resin-metal composite ultra-thin laminate (claim 20) manufactured by using the method for producing a resin-metal composite ultra-thin laminate according to claim 8 or 9. Yes,
The resin-metal composite ultra-thin laminate according to
[0014]
The metal plate of the present invention is an ultra-thin metal plate (claim 22) manufactured by using the method for manufacturing an ultra-thin metal plate according to any one of
In the resin-coated ultrathin metal laminate according to claim 22, the thickness of the metal plate is 0.01 to 0.1 mm (claim 23).
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail. In the present invention, a resin-coated metal plate obtained by laminating a resin having a thickness of 10 to 200 μm on a metal plate such as a cold-rolled steel plate or an aluminum alloy plate having a plate thickness of 0.05 to 0.3 mm, By rolling without using a cooling liquid, a resin-coated ultra-thin metal plate, resin-metal composite ultra-thin plate, resin-coated ultra-thin metal laminate, resin-metal composite ultra-thin laminate or ultra-thin metal plate can be produced in a clean environment. It is manufactured.
[0016]
First, the resin-coated ultra-thin metal plate, resin-metal composite ultra-thin plate, resin-coated ultra-thin metal laminate, resin-metal composite ultra-thin laminate, and resin-coated metal plate used as a starting material for the ultra-thin metal plate of the present invention will be described. . As a metal plate as a substrate to be coated with a resin, a cold-rolled steel plate, and a cold-rolled steel plate plated with tin, nickel, zinc, copper, or an alloy plated with two or more of these plated metals, Chromate treatment such as electrolytic chromic acid treatment or immersion chromic acid treatment, chemical treatment such as phosphoric acid treatment, non-chromium treatment (vanadium salt treatment), and further chemical treatment after plating or alloy plating Or an aluminum alloy plate, or an aluminum alloy plate that has been subjected to a chemical conversion treatment such as alumite treatment, chromate treatment, phosphoric acid treatment, phosphoric acid chromate treatment, or chromium-free treatment (zirconium salt treatment), or even a stainless steel plate or copper plate , Brass, bronze, bronze and other copper alloy plates, nickel plates and nickel alloy plates such as invar, and copper Or the like can be used in or copper alloy sheet that has been subjected to a chemical conversion treatment to be applied to the cold rolled steel sheet. The thickness of these metal plates is about 0.05 to 0.3 mm from the viewpoint of workability when coating the resin and the adhesive strength of the resin after rolling the resin-coated metal plate or the resin-metal composite plate. Preferably, there is.
[0017]
Examples of the resin to be coated on the metal plate include polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, ethylene terephthalate / ethylene isolephthalate copolymer, or a polyester resin such as a blend of two or more of these, polyethylene, Polyolefin resins such as polypropylene, ethylene / propylene copolymers or those obtained by modifying these with an acid having a carboxyl group such as maleic acid, and polyamides such as 6-nylon, 6.10-nylon, 6,6-nylon Resin or the like can be used. The thickness of these resins is preferably about 10 to 200 μm from the viewpoints of workability when coating the metal plate and adhesion strength to the metal plate after rolling the resin-coated metal plate.
[0018]
When a resin-coated metal plate is used as a starting material by coating the resin on the metal plate, as a coating method, the resin is directly heat-bonded to one or both surfaces of the metal plate using a known heat bonding method. Alternatively, it may be bonded between a metal plate and a resin via an adhesive. The resin-coated metal plate thus obtained may be rolled as a single-layer plate when both surfaces of the metal plate are coated with resin, or may be formed as a single-layer plate having both surfaces or one surface coated with resin as described later. A plurality of laminated plates may be laminated and rolled as a resin-coated metal laminated plate. When the resin surface of a single-layer plate is in contact with the metal or resin surface of another single-layer plate during lamination of a single-layer plate, the above-mentioned heat bonding method or the method of bonding with an adhesive between the metal plate and the resin is used. I do. When the metal surface of a single-layer plate is in contact with the metal surface of another single-layer plate, it is bonded and laminated between the metal plate and the resin by an intervening adhesive.
[0019]
When a resin-metal composite plate in which a resin is interposed between two metal plates is used as a starting material, the resin-metal composite plate may be directly thermally bonded to the two metal plates via the resin using a known thermal bonding method. Alternatively, the metal plate and the resin may be further bonded via an adhesive. The resin-metal composite plate thus obtained may be rolled as a single-layer plate, or a plurality of single-layer resin-metal composite plates may be interposed via a resin or via a resin and an adhesive as described later. They may be laminated and rolled as a resin-metal composite laminate.
[0020]
Next, the rolling method of the present invention will be described. Either the resin-coated metal plate, the resin-coated metal laminate, the resin-metal composite plate, or the resin-metal composite laminate, which is the starting material, using a normal single-stand mill, a tandem mill, a reverse mill, or another rolling device. Cold rolled to make it extremely thin. When the resin coated on the metal plate comes into contact with the rolling roll during cold rolling of the resin-coated metal plate or the resin-coated metal laminated plate (in the case of a single-layer plate with resin coated on both sides of the metal plate, The case where the uppermost layer and the lowermost layer are resin surfaces) can be rolled in a clean environment without using a lubricating liquid such as rolling oil or a cooling liquid such as an emulsion. Further, since a supply facility and a circulation (drainage) facility for a lubricating liquid such as rolling oil are not required, the rolling device can be made compact. However, when rolling at high speed or when rolling at a high reduction rate, the temperature rise due to the processing heat increases, and the resin is softened or melted and tends to adhere to the rolling roll, making it impossible to roll. It is necessary to suppress the rise in temperature due to processing heat by strengthening the cooling by the refrigerant liquid or by providing a forced air cooling device to cool the rolling roll and / or the portion where the rolling roll contacts the resin by blowing cold air.
[0021]
In the above-mentioned resin-metal composite board or resin-metal composite laminate, or a single-layer board in which resin is coated on one side of a metal sheet, or one or both of the uppermost layer and the lowermost layer in the resin-coated metal laminate, the metal surface is used. In some cases, the rolling is performed using a lubricating liquid and / or a cooling liquid, as in the case of rolling a normal metal plate.
[0022]
In addition, when rolling a single-layer plate in which both surfaces of a metal plate are coated with a resin, or a resin-coated metal laminate in which the uppermost layer and the lowermost layer are resin surfaces in a resin-coated metal laminate, the metal plate is protected by the resin. In this state, the roll is rolled without contacting the rolling roll, so that the metal plate can be rolled without generating micro flaws such as scratches on the surface. Further, in a laminating operation of laminating a single-layer resin-coated metal plate or a resin-metal composite plate to form a resin-coated metal laminate or a resin-metal composite laminate, each single-layer plate is laminated with high precision and laminated. Since it is possible to make a laminate or a resin-metal composite laminate, these resin-coated metal laminates or resin-metal composite laminates are rolled to form a resin-coated ultra-thin metal laminate or a resin-metal composite ultra-thin laminate. In this case, there is no occurrence of edge cut due to misalignment of the end portions in the plate width direction.
[0023]
Production method of resin-coated ultra-thin metal plate, resin-coated ultra-thin metal laminate, resin-metal composite ultra-thin plate, resin-metal composite ultra-thin laminate of the present invention, that is, resin-coated metal plate, resin-coated metal laminate, resin-metal composite A method for rolling a plate and a resin-metal composite laminate will be described below with reference to the drawings.
The method for rolling a resin-coated metal sheet of the present invention is as follows.
(1) As shown in FIG. 1, a single-layer resin-laminated metal plate 1a in which both surfaces of a
[0024]
Rolling method of the resin-coated metal laminate of the present invention,
(2) As shown in FIG. 2, a plurality of resin-coated metal plates (indicated by 2 a in the figure) formed by coating one surface of a
(3) As shown in FIG. 3, a resin-coated
[0025]
The method for rolling a resin-metal composite plate of the present invention is as follows.
(4) As shown in FIG. 4, a resin-
[0026]
Rolling method of the resin-metal composite laminate of the present invention,
(5) As shown in FIG. 5, a resin-metal composite laminate 50 obtained by laminating a plurality of the resin-
[0027]
The thickness of the resin-coated ultrathin metal sheet obtained by rolling using the method (1) and the thickness of the resin-metal composite ultrathin sheet obtained by rolling using the method (4) are 0.1 mm. The following is preferred. Although it is possible to obtain a resin-coated ultrathin metal plate or a resin-metal composite ultrathin plate having a thickness of more than 0.1 mm using the above method, it can be produced without using the production method of the present invention. It is difficult to increase the rolling reduction to obtain a resin-coated ultrathin metal plate or a resin-metal composite ultrathin plate having a thickness of less than 0.01 mm, because the resin layer is peeled off or the resin layer is cracked. In the resin-coated ultra-thin metal plate and the resin-metal composite ultra-thin plate manufactured in this manner, the adhesive strength of the resin to the metal plate decreases as the rolling reduction increases, but after the rolling, the temperature is higher than the glass transition of the resin. More preferably, the adhesive strength can be increased by heating to a temperature higher than the crystallization temperature of the resin.
[0028]
The ultra-thin metal sheet of the present invention can be obtained by using any one of the above-mentioned rolling methods (1) to (5) to obtain a resin-coated ultra-thin metal sheet, a resin-coated ultra-thin metal laminate, a resin-metal composite ultra-thin sheet, and a resin metal. After preparing any one of the composite ultra-thin laminates, it can be obtained by peeling the resin layer. The thickness of the ultrathin metal plate thus obtained is also preferably 0.1 mm or less. Although it is possible to obtain an extremely thin metal plate having a thickness of more than 0.1 mm using the above method, it can be manufactured without using the manufacturing method of the present invention. As in the case of a resin-coated ultra-thin metal plate or a resin-metal composite ultra-thin plate, increasing the rolling reduction to obtain an ultra-thin metal plate having a thickness of less than 0.01 mm requires the use of a resin-coated metal plate or a resin metal as a material. It is difficult because the resin layer peels off or cracks occur in the resin layer when the composite plate is rolled. When the resin layer is peeled off from the resin-coated ultra-thin metal plate or the resin-coated ultra-thin metal laminate prepared by using any one of the rolling methods (1) to (3), the resin is applied to the surface of the metal plate. Rolled in a laminated state, the resin is peeled off after rolling, so that the metal surface is protected with the resin until after the rolling, so that an ultrathin metal plate free of micro flaws such as scratches on the metal plate surface can be obtained. . When the resin layer is peeled from the resin-metal composite ultra-thin sheet or the resin-metal composite ultra-thin laminated sheet prepared by using the rolling method of (4) or (5) above to obtain the ultra-thin metal sheet, the uppermost layer and the uppermost layer are obtained. Since the lower metal plate is in contact with the roll, if an ultra-thin metal plate without scratches or other small flaws on the surface of the metal plate is required, use other than the top and bottom two ultra-thin metal plates do it.
[0029]
【Example】
Hereinafter, the present invention will be described in more detail with reference to examples.
(Example 1)
A 20 μm-thick polyethylene terephthalate film was adhered to both sides of an electrolytic chromic acid-treated steel sheet having a thickness of 0.24 mm using a UV-curable primer as an adhesive to obtain a resin-coated steel sheet. The resin-coated steel sheet was rolled using a reverse rolling mill without using lubricating oil or cooling water until the thickness of the steel sheet became 0.01 mm by dry rolling to obtain a resin-coated ultrathin steel sheet. When this resin laminated ultra-thin steel sheet was subjected to an Erichsen overhanging process, it was possible to perform a forming process up to an overhang amount of 3 mm without peeling off the resin or generating cracks in the resin.
[0030]
(Example 2)
A 20 μm-thick maleic acid-modified polyethylene film was directly hot-bonded and coated on both sides of a stainless steel plate (JIS: 304) having a thickness of 0.24 mm to obtain a resin-coated stainless steel plate. This resin-coated stainless steel sheet was rolled by a dry rolling method using a reverse rolling mill without using lubricating oil or cooling water until the thickness became 0.08 mm, to obtain a resin-coated ultrathin stainless steel sheet. The maleic acid-modified polyethylene film was peeled off from the resin-coated ultrathin stainless steel sheet to obtain an ultrathin stainless steel sheet having a thickness of 0.069 mm.
[0031]
(Example 3)
A polyethylene terephthalate film having a thickness of 20 μm was adhered to one side of an electrolytic chromic acid-treated steel sheet having a thickness of 0.15 mm via an epoxy-phenol-based adhesive to obtain a single-side resin-coated steel sheet. Further, the same polyethylene terephthalate film was adhered to both sides of the same electrolytic chromic acid-treated steel sheet in the same manner as above to obtain a double-sided resin-coated steel sheet. The single-sided resin-coated steel sheet was bonded to one side of the double-sided resin-coated steel sheet via an epoxy-phenol-based adhesive to form a two-layer resin-coated steel sheet. Similarly, a single-sided resin-coated steel sheet prepared in the same manner as described above is sequentially bonded to the two-layer resin-coated steel sheet so that the double-sided resin-coated steel sheet is the lowermost portion of the laminated sheet, and the double-sided resin-laminated steel sheet is Three single-sided resin-laminated steel sheets were formed thereon, and a resin-coated steel laminated sheet having a total thickness of 0.7 mm was prepared so that the steel sheet surfaces did not come into contact with each other. The plate resin-coated steel laminate was rolled by a reverse rolling mill using an emulsion lubricant until the total thickness became 0.24 mm. The polyethylene terephthalate film and the epoxy-phenol adhesive were peeled off from the resin-coated ultrathin steel laminate thus obtained to obtain an ultrathin steel plate having a thickness of 0.051 mm.
[0032]
(Example 4)
A 20 μm polyethylene terephthalate film was sandwiched between two cold-rolled steel plates having a thickness of 0.06 mm and thermally bonded to form a resin-steel composite plate. This resin steel composite plate was rolled by a reverse rolling mill using an emulsion lubricating liquid until the thickness of the steel plate became 0.01 mm to obtain a resin steel composite ultrathin plate. When this resin steel composite ultra-thin plate was subjected to Erichsen overhanging processing, it could be formed up to an overhang amount of 2.5 mm without peeling off the resin or generating cracks in the resin.
[0033]
(Example 5)
A 20 μm polyethylene terephthalate film was sandwiched between two cold-rolled steel plates having a thickness of 0.06 mm and thermally bonded to form a resin-steel composite plate. Two sets of this resin steel composite plate were prepared, and the same polyethylene terephthalate film was sandwiched between the resin steel composite plates and thermally bonded to prepare a double resin steel composite laminate. Next, the double resin steel composite laminate and the same resin steel composite plate as described above are prepared, and a polyethylene terephthalate film similar to the above is sandwiched therebetween and thermally bonded to prepare a triple resin steel composite laminate. Then, a resin steel composite laminate having a total thickness of 0.46 mm was obtained. This resin-steel composite laminate was rolled using a reverse rolling mill using lubricating oil or cooling water, and rolled to a total thickness of 0.11 mm. there were. The polyethylene terephthalate film was peeled off from the resin steel composite laminate thus obtained to obtain an ultrathin steel sheet having a thickness of 0.014 mm.
[0034]
【The invention's effect】
The resin-coated ultrathin metal plate of the present invention is manufactured by rolling one resin-coated metal plate obtained by laminating a resin on both surfaces of a metal plate without using a lubricating liquid or a cooling liquid. The resin-coated ultra-thin metal laminate of the present invention is obtained by laminating a plurality of resin-coated metal plates obtained by coating a resin on one surface of a metal plate and / or a resin-coated metal plate obtained by coating both surfaces of a metal plate with a resin. It is manufactured by rolling the resin-coated metal laminate without using a lubricating liquid or a cooling liquid. Therefore, it is possible to perform rolling in a clean environment, and it is not necessary to provide a lubricant supply device such as rolling oil or a circulation (drainage) device, so that the rolling device can be made compact and lubrication before rolling can be performed. A liquid application operation and a degreasing cleaning operation after rolling are also unnecessary. In addition, the resin-metal composite ultra-thin laminate of the present invention is a resin-metal composite laminate obtained by laminating a plurality of resin-metal composite plates each having a metal plate attached to both sides of a resin and laminating the same via a resin. It is manufactured by rolling a metal composite laminate using a lubricating liquid and / or a cooling liquid. As described above, since the metal plate is rolled in a state where it is protected by the resin without contacting the rolling rolls, the metal plate can be rolled without generating minute flaws such as scratches on the surface. Furthermore, according to the manufacturing method of the present invention, in a laminating operation of laminating a single-layer resin-coated metal plate or a resin-metal composite plate to form a resin-coated metal laminated plate or a resin-metal composite plate, each single-layer plate is accurately stacked. Since it is possible to laminate and laminate a resin-coated metal laminate or a resin-metal composite laminate, these resin-coated metal laminates or resin-metal composite laminates are rolled to form a resin-coated ultra-thin metal laminate or the like. When the resin-metal composite ultra-thin laminate is used, there is no occurrence of edge cuts due to misalignment of the end portions in the width direction of the plate.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an example of a method for producing a resin-coated ultrathin metal plate of the present invention.
FIG. 2 is a schematic view showing an example of a method for producing a resin-coated ultrathin metal laminate of the present invention.
FIG. 3 is a schematic view showing another example of the method for producing a resin-coated ultrathin metal laminate of the present invention.
FIG. 4 is a schematic view showing an example of a method for producing a resin-metal composite ultrathin plate according to the present invention.
FIG. 5 is a schematic view showing an example of the method for producing a resin-metal composite ultra-thin laminate of the present invention.
[Explanation of symbols]
1a: double-sided resin-coated metal plate
2a: Single-sided resin-coated metal plate
5a: rolling roll
5b: rolling roll
10: Resin
10a: resin
20: metal plate
30: resin-coated metal laminate
40: resin-metal composite board
50: resin-metal composite laminate
Claims (23)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003156279A JP2004358481A (en) | 2003-06-02 | 2003-06-02 | Method for producing resin-coated extremely thin metal strip, resin-coated extremely thin metal laminated strip, resin-metal complex extremely thin strip, resin-metal complex extremely thin laminated sheet and extremely thin metal sheet, and resin-coated extremely thin metal strip, resin-coated extremely thin metal laminated strip, resin-metal complex extremely thin strip, resin-metal complex extremely thin laminated strip and extremely thin metal strip, using them |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003156279A JP2004358481A (en) | 2003-06-02 | 2003-06-02 | Method for producing resin-coated extremely thin metal strip, resin-coated extremely thin metal laminated strip, resin-metal complex extremely thin strip, resin-metal complex extremely thin laminated sheet and extremely thin metal sheet, and resin-coated extremely thin metal strip, resin-coated extremely thin metal laminated strip, resin-metal complex extremely thin strip, resin-metal complex extremely thin laminated strip and extremely thin metal strip, using them |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2004358481A true JP2004358481A (en) | 2004-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003156279A Pending JP2004358481A (en) | 2003-06-02 | 2003-06-02 | Method for producing resin-coated extremely thin metal strip, resin-coated extremely thin metal laminated strip, resin-metal complex extremely thin strip, resin-metal complex extremely thin laminated sheet and extremely thin metal sheet, and resin-coated extremely thin metal strip, resin-coated extremely thin metal laminated strip, resin-metal complex extremely thin strip, resin-metal complex extremely thin laminated strip and extremely thin metal strip, using them |
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| JP (1) | JP2004358481A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688885A (en) * | 2012-06-13 | 2012-09-26 | 中南大学 | Preparation method for synchronously cold-rolling iron foil by using laminated method |
-
2003
- 2003-06-02 JP JP2003156279A patent/JP2004358481A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688885A (en) * | 2012-06-13 | 2012-09-26 | 中南大学 | Preparation method for synchronously cold-rolling iron foil by using laminated method |
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