JPH0939094A - Production of laminated sheet - Google Patents

Production of laminated sheet

Info

Publication number
JPH0939094A
JPH0939094A JP7216541A JP21654195A JPH0939094A JP H0939094 A JPH0939094 A JP H0939094A JP 7216541 A JP7216541 A JP 7216541A JP 21654195 A JP21654195 A JP 21654195A JP H0939094 A JPH0939094 A JP H0939094A
Authority
JP
Japan
Prior art keywords
roll
embossing
plate
resin film
laminated
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.)
Pending
Application number
JP7216541A
Other languages
Japanese (ja)
Inventor
Akihiro Hanabusa
哲広 英
Kazunori Yanagihara
和則 柳原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Kohan Co Ltd
Original Assignee
Toyo Kohan Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyo Kohan Co Ltd filed Critical Toyo Kohan Co Ltd
Priority to JP7216541A priority Critical patent/JPH0939094A/en
Publication of JPH0939094A publication Critical patent/JPH0939094A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/20—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of continuous webs only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/06—Embossing

Landscapes

  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To produce a laminated sheet generating no blocking phenomenon. SOLUTION: An embossing roll 9 and a backup roll 10 are arranged behind laminating rolls 5 in opposed relationship and a laminated sheet 8 is sent into the gap between both rolls while a synthetic resin film 4 is held to temp. slightly higher than the softening point of the film to be grasped in nip length of about 3mm or more. During this period, emboss processing is applied to the synthetic resin film 4 and, at the same time, the temp. of the laminated sheet 8 is lowered by 5 deg.C or higher to stabilize emboss processing.

Description

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

【０００１】[0001]

【発明の属する技術分野】本発明は、金属薄板に合成樹
脂フィルムを被覆したラミネート板に関し、特に、巻き
取り性の良いラミネート板の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated plate in which a thin metal plate is covered with a synthetic resin film, and more particularly to a method for producing a laminated plate having good winding properties.

【０００２】[0002]

【従来の技術】鋼やアルミニウム等の金属薄板に熱可塑
性の合成樹脂フィルムを被覆したラミネート板は、飲料
用の缶等に多用されているが、このようなラミネート板
は、長尺状の金属薄板を連続的に送り、加熱ロールに通
して加熱し、熱せられた金属薄板に合成樹脂フィルムを
被覆して形成される。このときの金属薄板と合成樹脂フ
ィルムとの結合は、接着剤又は合成樹脂フィルムの表面
が溶融することにより行われる。合成樹脂フィルムが被
覆されたラミネート板は、クェンチタンクで冷却されて
ロール状に巻き取られていく。2. Description of the Related Art Laminated plates obtained by coating a thin metal plate of steel, aluminum or the like with a thermoplastic synthetic resin film are often used for beverage cans and the like. The thin plate is continuously fed and heated through a heating roll, and the heated thin metal plate is coated with the synthetic resin film. At this time, the metal thin plate and the synthetic resin film are bonded to each other by melting the surface of the adhesive or the synthetic resin film. The laminated plate coated with the synthetic resin film is cooled by a quenching tape and wound into a roll.

【０００３】しかし、上記のようにして形成されるラミ
ネート板は、冷却後もかなりの高温を保っており、表面
の平坦度が良いこともあって、ラミネート板同士が押し
付けられるとくっついてしまい、相互間の滑り性が非常
に悪くなる。そのため、巻き取り中に外側の板がダブつ
いた状態で内側の板にくっつくと、巻き取り張力を上げ
てダブつきを無くそうとしても、内外の板の間での滑り
が起きないので、ダブつきがなくならず、隙間の開いた
状態で巻き取りが続行されることになる。このようなこ
とが繰り返し起こり、やがて巻き取りが不能な状態にな
ってしまう。また、高温で保持された状態で巻き取ら
れ、長時間ラミネート板同士が加圧接触された状態にお
かれた場合、フィルム同士が付着し巻き戻しができなく
なってしまう。さらに、ラミネート板を巻き戻した後
に、シート状にカットされ積載された場合においても、
長時間荷重をかけた状態で積載保持されると、ラミネー
ト板同士がくっついてしまい、次工程へラミネート板を
搬送するのが困難になるという問題点もある。これらの
現象をブロッキング現象という。However, the laminated plate formed as described above maintains a considerably high temperature even after cooling, and the flatness of the surface is good, so that when the laminated plates are pressed against each other, they stick to each other. The slipperiness between them becomes very poor. For this reason, if the outer plate sticks to the inner plate while it is being wound up, slipping between the inner and outer plates will not occur even if you try to increase the winding tension to eliminate the dubbing. It will not disappear, and the winding will continue with the gap open. Such a situation occurs repeatedly, and eventually, the winding becomes impossible. Further, if the laminate plates are wound in a state of being held at a high temperature and kept in pressure contact with the laminate plates for a long time, the films adhere to each other and the film cannot be unwound. Furthermore, even if the laminated board is rewound and then cut into sheets and stacked,
If the laminated plates are loaded and held under a load for a long time, the laminated plates are stuck to each other, which makes it difficult to convey the laminated plates to the next step. These phenomena are called blocking phenomena.

【０００４】[0004]

【発明が解決しようとする課題】本発明は、上記の事実
に鑑みたもので、ブロッキング現象の起こらないラミネ
ート板の製造方法を提供することを目的としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above facts, and it is an object of the present invention to provide a method for producing a laminate plate in which a blocking phenomenon does not occur.

【０００５】[0005]

【課題を解決するための手段】上記の目的を達成するた
めに本発明は、長尺の金属薄板を１方向に送りつつ加熱
ロールで加熱し、加熱ロールの後方に置かれたラミネー
トロールで熱可塑性の合成樹脂フィルムを金属薄板に押
し付けて連続的に被覆するラミネート板の製造方法にお
いて、上記ラミネートロールの後方にエンボスロール
と、少なくとも表面が弾性部材からなるバックアップロ
ールとを対向して配置し、上記合成樹脂フィルムが被覆
されたラミネート板を、該合成樹脂フィルムを該フィル
ムの軟化点より若干高い温度に保ちつつ上記エンボスロ
ールとバックアップロールの間に送り込み、上記ラミネ
ートされた合成樹脂フィルムにエンボス加工を施工する
と同時に、該樹脂フィルムの温度を若干低下させて、エ
ンボス加工を安定化させる構成を特徴としている。In order to achieve the above object, the present invention is directed to heating a long thin metal plate in one direction by a heating roll and heating it with a laminating roll placed behind the heating roll. In a method for manufacturing a laminate plate in which a plastic synthetic resin film is pressed against a metal thin plate to continuously coat the film, an embossing roll is provided behind the laminate roll, and at least a backup roll having a surface made of an elastic member is disposed to face each other, The laminated plate coated with the synthetic resin film is fed between the embossing roll and the backup roll while maintaining the synthetic resin film at a temperature slightly higher than the softening point of the film, and the laminated synthetic resin film is embossed. Simultaneously with the construction, the temperature of the resin film is slightly lowered to stabilize the embossing process. It is characterized in configuration to.

【０００６】上記において、エンボスロールとバックア
ップロールとにより上記ラミネートされた金属薄板を約
３ｍｍ以上のニップ長で把持する構成とすることが望ま
しい。また、上記エンボス加工された後の上記ラミネー
ト板の温度が、エンボス加工前の温度より５℃以上低下
させるようにすることがさらに望ましい。In the above, it is desirable that the laminated thin metal plate is gripped by an embossing roll and a backup roll with a nip length of about 3 mm or more. Further, it is more desirable that the temperature of the laminated plate after the embossing is lower than the temperature before the embossing by 5 ° C. or more.

【０００７】[0007]

【発明の実施の形態】ラミネート板はその少なくとも一
面側にエンボス加工による凹凸模様が形成されるので、
ラミネート板同士が重なっても、一方に凹凸があって接
触面積が減少し、摩擦係数が大きくならず、滑り易さを
保つことができ、ブロッキングを防止することができ
る。BEST MODE FOR CARRYING OUT THE INVENTION Since a laminate plate has an uneven pattern formed by embossing on at least one surface side thereof,
Even if the laminate plates are overlapped with each other, one of them has unevenness, the contact area is reduced, the friction coefficient is not increased, slipperiness can be maintained, and blocking can be prevented.

【０００８】[0008]

【実施例】以下に図面を用いて本発明の実施例を説明す
る。図１は、本発明の製造方法を実施する装置の概略構
成を示す図である。同図において、１は金属薄板、２は
加熱ロール、３は最終加熱ロール、４は熱可塑性樹脂フ
ィルム、５はラミネートロール、６はクェンチタンク、
７は巻き取りロール、８はラミネート板を示す。以上の
構成は従来の製造装置と同じで、本発明はこれらの構成
にエンボスロール９と、バックアップロール１０とを対
向して設けた点に特徴を有する。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of an apparatus for carrying out the manufacturing method of the present invention. In the figure, 1 is a thin metal plate, 2 is a heating roll, 3 is a final heating roll, 4 is a thermoplastic resin film, 5 is a laminating roll, 6 is a quenching roll,
Reference numeral 7 represents a take-up roll, and 8 represents a laminate plate. The above-mentioned structure is the same as that of the conventional manufacturing apparatus, and the present invention is characterized in that the embossing roll 9 and the backup roll 10 are provided to face these structures.

【０００９】金属薄板１は、複数の加熱ロール２，２…
で徐々に加熱され、一対の最終加熱ロール３で、被覆さ
れる熱可塑性樹脂フィルム４の軟化点以上で、熱分解し
ない範囲内まで加熱される。The thin metal plate 1 includes a plurality of heating rolls 2, 2, ...
Is gradually heated, and is heated by the pair of final heating rolls 3 to a temperature not lower than the softening point of the thermoplastic resin film 4 to be covered and not thermally decomposed.

【００１０】ラミネートロール５は、加熱された金属薄
板１の両面に熱可塑性樹脂フィルム４を押しつけ、融着
させる。熱可塑性樹脂フィルム４として、この実施例で
は、ポリエステルまたはポリプロピレンのフィルムを使
用している。このとき、ラミネートロール５は、金属薄
板１から熱を受け取り、金属薄板１の温度は低下する
が、依然として熱可塑性樹脂フィルムの軟化点より高く
熱分解しない温度の範囲内である。The laminating roll 5 presses the thermoplastic resin film 4 against both sides of the heated metal thin plate 1 to fuse them together. As the thermoplastic resin film 4, a polyester or polypropylene film is used in this embodiment. At this time, the laminating roll 5 receives heat from the metal thin plate 1, and the temperature of the metal thin plate 1 is lowered, but is still within the temperature range higher than the softening point of the thermoplastic resin film and not thermally decomposed.

【００１１】ラミネートロール５から出た金属薄板は、
熱可塑性樹脂フィルムが被覆されたラミネート板８とな
り、従来であれば、直ちにクェンチタンク６で冷却さ
れ、巻き取りロール７に巻き取られていたが、本発明で
は、その前に、エンボスロール９とバックアップロール
１０との間に通される。エンボスロール９は金属製が望
ましく、表面に凹凸模様が形成されており、他方のバッ
クアップロール１０は、表面に弾性部材としてのゴムを
巻いたロールを使用している。The thin metal plate ejected from the laminating roll 5 is
The laminate plate 8 is coated with a thermoplastic resin film, and in the conventional case, the laminate plate 8 was immediately cooled by the quench roll 6 and wound on the take-up roll 7. However, according to the present invention, before that, the emboss roll 9 and the backup are used. It is passed between the rolls 10. The embossing roll 9 is preferably made of metal and has an uneven pattern formed on the surface thereof. The other backup roll 10 is a roll having a surface covered with rubber as an elastic member.

【００１２】エンボスロール９とバックアップロール１
０との間には、ロールの長さ１ｃｍ当たり２〜８ｋｇの
圧力が加えられており、図２に示すように、ゴムの表面
が押しつぶされてラミネート板８のニップ長Ｌを約３ｍ
ｍ確保できるようにしている。そして、この間で、一方
側の熱可塑性樹脂フィルム４にエンボス加工を施すこと
になる。このニップ長が３ｍｍ未満であると十分なエン
ボス加工を施すことができない。また、このニップ長は
ロール径やロール材質などで確保できる長さが決まって
くるが、通常３ｍｍ〜２０ｍｍ程度が採用されている。
好ましくは５ｍｍ〜１０ｍｍ程度である。Embossing roll 9 and backup roll 1
A pressure of 2 to 8 kg per 1 cm of the roll length is applied between 0 and 0, and as shown in FIG. 2, the surface of the rubber is crushed and the nip length L of the laminate plate 8 is about 3 m.
m is secured. During this period, the thermoplastic resin film 4 on one side is embossed. If this nip length is less than 3 mm, sufficient embossing cannot be performed. The nip length, which can be secured depending on the roll diameter, roll material, etc., is usually about 3 mm to 20 mm.
It is preferably about 5 mm to 10 mm.

【００１３】本発明では、エンボスロール９の入口側の
の位置と、出口側のの位置との温度を、次のように
して決めて管理している。では、エンボスロール９の
凹凸模様を確実に樹脂フィルム４に転写するために必要
な温度とする。具体的には、熱可塑性樹脂フィルム４が
ポリエチレン又はポリプロピレンの場合であれば、４０
〜９０℃の範囲内とし、好ましくは６０〜８５℃であ
る。では、転写された凹凸模様が戻らないように、で
きるだけ低い温度に設定するのが好ましいが、本発明で
は工業的生産上の観点から、の温度から約５℃以上低
くなるよう設定する。温度差が５℃未満ではエンボス加
工が定着しない（転写された凹凸模様が元の平面の状態
に戻ってしまうこと）可能性が大であるからである。通
常１０〜２０℃低く設定するのが好ましい。In the present invention, the temperatures at the inlet side and the outlet side of the embossing roll 9 are determined and controlled as follows. Then, the temperature is set to a temperature necessary for reliably transferring the uneven pattern of the embossing roll 9 to the resin film 4. Specifically, if the thermoplastic resin film 4 is polyethylene or polypropylene, 40
To 90 ° C., preferably 60 to 85 ° C. Then, it is preferable to set the temperature as low as possible so that the transferred uneven pattern does not return. However, in the present invention, from the viewpoint of industrial production, the temperature is set to about 5 ° C. or more. If the temperature difference is less than 5 ° C., embossing may not be fixed (the transferred uneven pattern may return to the original flat state). Usually, it is preferable to set the temperature lower by 10 to 20 ° C.

【００１４】そして、からへの温度の低下は、エン
ボスロール９とバックアップロール１０との双方によっ
て行われるが、フィルムに直接接触するエンボスロール
９による温度低下が主体となる。これは、バックアップ
ロール１０がゴム等の弾性体からできており、エンボス
ロール９との間で十分な長さのニップ長を確保できるこ
とから、ラミネート板８からエンボスロール９への熱の
移行がなされるので、達成できるものである。エンボス
ロール９は、通常は、周辺の雰囲気中で冷却すればよい
が、必要に応じて冷却水等の冷媒を使用してもよい。The decrease in the temperature from to is performed by both the embossing roll 9 and the backup roll 10, but the temperature decrease mainly due to the embossing roll 9 that directly contacts the film. This is because the backup roll 10 is made of an elastic material such as rubber and a sufficient nip length can be secured between the backup roll 10 and the emboss roll 9, so that heat is transferred from the laminate plate 8 to the emboss roll 9. This is something that can be achieved. Normally, the embossing roll 9 may be cooled in the surrounding atmosphere, but a coolant such as cooling water may be used as necessary.

【００１５】熱可塑性樹脂フィルム４に形成される凹凸
模様の深さは、における温度が高いと深くなり、低い
と浅くなる。また、エンボスロール９とバックアップロ
ール１０との間の圧力が高いと深く、低いと浅くなる。
表１に本発明の具体的な温度と圧力の例を従来のエンボ
スロール９が無い場合と比較して示す。The depth of the concavo-convex pattern formed on the thermoplastic resin film 4 becomes deep when the temperature is high, and becomes shallow when the temperature is low. Further, when the pressure between the embossing roll 9 and the backup roll 10 is high, the pressure is deep, and when the pressure is low, the pressure is shallow.
Table 1 shows specific examples of the temperature and pressure of the present invention in comparison with the case without the conventional embossing roll 9.

【００１６】[0016]

【表１】 上記の表において、ＰＥはポリエチレン、ＰＰはポリプ
ロピレンを示す。[Table 1] In the above table, PE indicates polyethylene and PP indicates polypropylene.

【００１７】[0017]

【発明の効果】上述したように、本発明によると、ラミ
ネート板はその少なくとも一面側にエンボス加工による
凹凸模様が形成されるので、ラミネート板同士が重なっ
ても、一方に凹凸があって接触面積が減少し、摩擦係数
が大きくならず、滑り易さを保つことができ、ブロッキ
ングを防止することができる。As described above, according to the present invention, since the laminate plate has an uneven pattern formed by embossing on at least one surface side thereof, even if the laminate plates are overlapped with each other, there is unevenness on one side and the contact area is large. Is reduced, the coefficient of friction does not increase, slipperiness can be maintained, and blocking can be prevented.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明のラミネート板を製造する装置の概略構
成を示す図である。FIG. 1 is a diagram showing a schematic configuration of an apparatus for producing a laminated plate of the present invention.

【図２】エンボスロールとバックアップロールとの接触
部を拡大した図である。FIG. 2 is an enlarged view of a contact portion between an embossing roll and a backup roll.

【符号の説明】[Explanation of symbols]

１ 金属薄板 ４ 合成樹脂フィルム ８ ラミネート板 ９ エンボスロール １０ バックアップロール Ｌ ニップ長 1 Metal thin plate 4 Synthetic resin film 8 Laminate plate 9 Embossing roll 10 Backup roll L Nip length

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 長尺の金属薄板を１方向に送りつつ加熱
ロールで加熱し、加熱ロールの後方に置かれたラミネー
トロールで熱可塑性の合成樹脂フィルムを金属薄板に押
し付けて連続的に被覆するラミネート板の製造方法にお
いて、 上記ラミネートロールの後方にエンボスロールと、少な
くとも表面が弾性部材からなるバックアップロールとを
対向して配置し、上記合成樹脂フィルムが被覆されたラ
ミネート板を、該合成樹脂フィルムを該フィルムの軟化
点より若干高い温度に保ちつつ上記エンボスロールとバ
ックアップロールの間に送り込み、上記ラミネートされ
た合成樹脂フィルムにエンボス加工を施工すると同時
に、該ラミネート板の温度を若干低下させて、エンボス
加工を安定化させることを特徴とするラミネート板の製
造方法。1. A long metal thin plate is fed in one direction and heated by a heating roll, and a thermoplastic resin film is pressed against the metal thin plate continuously by a laminating roll placed behind the heating roll to continuously coat the thin metal plate. In the method for producing a laminated plate, an embossing roll and a backup roll having at least a surface made of an elastic member are arranged to face each other behind the laminating roll, and the laminating plate coated with the synthetic resin film is the synthetic resin film. Is fed between the embossing roll and the backup roll while maintaining a temperature slightly higher than the softening point of the film, and at the same time as embossing the laminated synthetic resin film, the temperature of the laminated plate is slightly lowered, A method for manufacturing a laminated board, characterized by stabilizing embossing. 【請求項２】 請求項１において、上記エンボスロール
とバックアップロールとにより上記ラミネートされた金
属薄板を約３ｍｍ以上のニップ長で把持することを特徴
とするラミネート板の製造方法。2. The method for manufacturing a laminated plate according to claim 1, wherein the laminated thin metal plate is held by the embossing roll and the backup roll with a nip length of about 3 mm or more. 【請求項３】 請求項１または２において、上記エンボ
ス加工された後の上記ラミネート板の温度を、エンボス
加工前の温度より５℃以上低下させることを特徴とする
ラミネート板の製造方法。3. The method for manufacturing a laminated plate according to claim 1, wherein the temperature of the laminated plate after the embossing is lower than the temperature before the embossing by 5 ° C. or more.
JP7216541A 1995-08-03 1995-08-03 Production of laminated sheet Pending JPH0939094A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7216541A JPH0939094A (en) 1995-08-03 1995-08-03 Production of laminated sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7216541A JPH0939094A (en) 1995-08-03 1995-08-03 Production of laminated sheet

Publications (1)

Publication Number Publication Date
JPH0939094A true JPH0939094A (en) 1997-02-10

Family

ID=16690062

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7216541A Pending JPH0939094A (en) 1995-08-03 1995-08-03 Production of laminated sheet

Country Status (1)

Country Link
JP (1) JPH0939094A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000026283A1 (en) * 1998-11-02 2000-05-11 Toyo Kohan Co., Ltd. Resin film excellent in embossing capability, embossing method for the resin film, decorative metal sheet coated with the resin film
WO2000026282A1 (en) * 1998-10-29 2000-05-11 Toyo Kohan Co., Ltd. Resin film excellent in embossing capability, embossing method, decorative metal sheet coated with the resin film
JP2006026980A (en) * 2004-07-13 2006-02-02 Toyo Kohan Co Ltd Method and apparatus for manufacturing resin coated plated steel sheet having embossed pattern
JP2013129074A (en) * 2011-12-20 2013-07-04 Jfe Steel Corp Device for manufacturing laminated steel sheet, and method for manufacturing laminated steel sheet

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000026282A1 (en) * 1998-10-29 2000-05-11 Toyo Kohan Co., Ltd. Resin film excellent in embossing capability, embossing method, decorative metal sheet coated with the resin film
WO2000026283A1 (en) * 1998-11-02 2000-05-11 Toyo Kohan Co., Ltd. Resin film excellent in embossing capability, embossing method for the resin film, decorative metal sheet coated with the resin film
JP2006026980A (en) * 2004-07-13 2006-02-02 Toyo Kohan Co Ltd Method and apparatus for manufacturing resin coated plated steel sheet having embossed pattern
JP4530746B2 (en) * 2004-07-13 2010-08-25 東洋鋼鈑株式会社 Manufacturing method and manufacturing apparatus for resin-coated plated steel sheet having embossed pattern
JP2013129074A (en) * 2011-12-20 2013-07-04 Jfe Steel Corp Device for manufacturing laminated steel sheet, and method for manufacturing laminated steel sheet

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