JP2888321B2 - Laminated steel sheet, can body and laminated can, and methods for producing them - Google Patents
Laminated steel sheet, can body and laminated can, and methods for producing themInfo
- Publication number
- JP2888321B2 JP2888321B2 JP5314421A JP31442193A JP2888321B2 JP 2888321 B2 JP2888321 B2 JP 2888321B2 JP 5314421 A JP5314421 A JP 5314421A JP 31442193 A JP31442193 A JP 31442193A JP 2888321 B2 JP2888321 B2 JP 2888321B2
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- film
- laminated
- width
- manufactured
- 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.)
- Expired - Lifetime
Links
Landscapes
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Laminated Bodies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は主として溶接缶の缶胴に
用いられるラミネート鋼板、それを用いた缶胴及びラミ
ネート缶、並びにそれらの製造方法に関する。さらに詳
しくは、食品缶、飲料缶、美術缶、１８リッター缶など
に適用される、接合後に塗装される補修用塗料等との密
着性に優れたフィルムで被覆されたラミネート鋼板、缶
胴、ラミネート缶及びそれら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 steel sheet mainly used for a can body of a welding can, a can body and a laminated can using the same, and a method for producing the same. More specifically, laminated steel sheets, can bodies, laminates, which are applied to food cans, beverage cans, art cans, 18 liter cans, etc., and are coated with a film having excellent adhesion to repair paints applied after joining, etc. The present invention relates to cans and a method for producing them.
【０００２】[0002]
【従来の技術】従来、食缶、飲料缶、美術缶、１８リッ
ター缶等の材料として、表面処理鋼板等にポリエチレン
テレフタレート等のフィルムを被覆したラミネート鋼板
（樹脂積層鋼板）が提案されている（例えば特開平５−
１１６２２３号公報等）。これらは製缶後に樹脂塗料な
どで塗装することに代えて、あらかじめ表面処理鋼板等
の両面または片面の全面に樹脂フィルムをラミネートす
ることにより缶材料の耐久性を高めたものである。ラミ
ネート鋼板を用いると、製缶後に塗装するより製缶作業
が簡単になり、コストも下がるので、近時種々のラミネ
ート鋼板が提案され、使用されるようになってきてい
る。またこれらのラミネート鋼板を製造する方法、ラミ
ネート鋼板から製造した缶等も従来公知である。2. Description of the Related Art Conventionally, as a material for food cans, beverage cans, art cans, 18 liter cans, etc., a laminated steel sheet (resin laminated steel sheet) in which a surface-treated steel sheet or the like is coated with a film of polyethylene terephthalate or the like has been proposed. For example, Japanese Unexamined Patent Publication
No. 116223). In these, the durability of the can material is increased by laminating a resin film on both surfaces or one surface of a surface-treated steel plate or the like in advance instead of painting with a resin paint or the like after the can is made. When a laminated steel sheet is used, the can-making operation becomes simpler and the cost is reduced as compared with painting after the can-making, and various laminated steel sheets have recently been proposed and used. Methods for manufacturing these laminated steel sheets, cans manufactured from the laminated steel sheets, and the like are also conventionally known.
【０００３】[0003]
【発明が解決しようとする課題】前記ラミネート鋼板を
筒状に成形して溶接缶等の缶胴として用いる場合は、端
部同士を溶接、ハンダ付けまたは接着により接合した
後、溶接熱等により被覆が損なわれた箇所を熱可塑性樹
脂や熱硬化性樹脂等の塗料あるいは補修用テープ等（以
下、塗料等という）で補修し、溶接部分の耐錆性や耐腐
食性をラミネートフィルムと同程度まで増す必要があ
る。このような補修用塗料等は、鋼素材との密着性（付
着性および接合強度）が要求されるだけでなく、鋼板表
面の塗料等との密着性も要求される。すなわち鋼板を筒
状に形成して両端部同士を重ね合わせるとき、重ね合わ
せた両端部には通常あらかじめ塗装印刷されている塗料
ないしインキが存在するので、それらの塗料ないしイン
キとの密着性も要求される。そのため補修用の塗料等に
はポリエステル系樹脂等の熱可塑性樹脂やエポキシ系樹
脂などの熱硬化性樹脂等の塗料あるいは補修用テープが
用いられる。When the laminated steel sheet is formed into a tubular shape and used as a can body such as a welding can, the ends are joined by welding, soldering or bonding, and then covered with welding heat or the like. The damaged part is repaired with a paint such as thermoplastic resin or thermosetting resin or a repair tape etc. (hereinafter referred to as paint etc.), and the rust resistance and corrosion resistance of the welded part are about the same as the laminate film Need to increase. Such a repair paint or the like is required not only to have adhesion (adhesion and joining strength) to a steel material, but also to have adhesion to a paint or the like on a steel sheet surface. That is, when a steel plate is formed into a tubular shape and both ends are overlapped, paints or inks that are usually pre-painted and printed are present at the overlapped ends, so that adhesion to those paints or inks is also required. Is done. Therefore, a paint such as a thermoplastic resin such as a polyester resin or a thermosetting resin such as an epoxy resin, or a repair tape is used as the paint for repair.
【０００４】こうした塗料等による補修処理は、従来の
フィルムを有しない表面処理鋼板を使用した溶接缶でも
広く行われているが、ラミネート鋼板においては被覆フ
ィルムと補修用塗料等との密着性がとくに問題となる。
すなわち前述のように、補修塗料などは缶の素材鋼板だ
けでなく、塗装印刷との密着性も高い特殊な塗料である
ので、従来のポリエチレンテレフタレート製のフィルム
に対しては充分な密着性が得られず、そのため補修した
部分の耐久性が低いという問題がある。またラミネート
鋼板の端部同士を接合するとき、その両端部のフィルム
を剥し取る方が溶接等の接合強度が高くなり、しかも前
述の補修用塗料等とフィルムとが重なる範囲が少なくな
るので好ましいが、その剥し取る手間が極めて煩雑であ
る。[0004] Such repairing treatment with paint or the like is widely performed even in a conventional welding can using a surface-treated steel sheet having no film. However, in the case of a laminated steel sheet, the adhesion between the coating film and the repairing paint is particularly high. It becomes a problem.
In other words, as described above, repair paints are special paints that have high adhesion to not only the steel plate of the can but also the coating and printing, and therefore have sufficient adhesion to the conventional polyethylene terephthalate film. Therefore, there is a problem that the repaired portion has low durability. Also, when joining the ends of the laminated steel sheet, it is preferable to peel off the film at both ends, since the joining strength such as welding is increased, and the above-mentioned repair paint and the like are less overlapped with the film. However, the labor for stripping is extremely complicated.
【０００５】本発明は、ラミネートフィルムに補修用塗
料等に対して充分高い密着性を備えさせ、それによりラ
ミネート缶に成形したときに、接合部を含めた全体の耐
錆性および耐腐食性が高く、しかも製缶加工が容易なラ
ミネート鋼板を提供することを技術課題としている。さ
らに本発明は、そのラミネート鋼板を利用した、耐久性
が高く、製造し易いラミネート缶の缶胴及びラミネート
缶、並びにそれらの製造方法を提供することを技術課題
としている。According to the present invention, the laminated film is provided with a sufficiently high adhesiveness to a paint for repair and the like, so that when formed into a laminated can, the overall rust resistance and corrosion resistance including the joints are improved. It is an object of the present invention to provide a laminated steel sheet that is expensive and easy to make. Further, another object of the present invention is to provide a can body of a laminated can, a laminated can, and a method for producing the same, which use the laminated steel sheet and have high durability and are easy to produce.
【０００６】[0006]
【課題を解決するための手段】 本発明のラミネート鋼
板は、帯状の鋼板と、その片面または両面に被覆された
フィルムとからなり、前記フィルムが共重合ポリエステ
ルフィルムであり、かつ、前記鋼板の幅（Ａ）が製造し
ようとしている缶胴の周長に接合代を加えた長さに対応
しており、前記フィルムが、鋼板より狭い幅（Ｂ）を有
すると共に、鋼板の両側端部を除く部分に被覆されてな
ることを特徴としている。Means for Solving the Problems The laminated steel sheet of the present invention comprises a strip-shaped steel sheet and a film coated on one or both sides thereof, wherein the film is a copolymer polyester.
And the width (A) of the steel plate corresponds to the length obtained by adding a joining margin to the circumference of the can body to be manufactured, and the film has a width (B) narrower than the steel plate. In addition, the steel sheet is characterized in that the steel sheet is coated on portions other than both side ends.
【０００７】本発明のラミネート鋼板の製造方法は、製
造しようとしている缶胴の周長に接合代を加えた長さに
対応した幅（Ａ）の帯状の鋼板およびその鋼板の幅
（Ａ）よりもいくらか狭い幅（Ｂ）の帯状の共重合ポリ
エステルフィルムを、それぞれ長さ方向に走行させ、鋼
板の一方の側縁と前記フィルムの側縁との間隔が所定の
寸法を維持するように調節しながら鋼板の幅方向におけ
る中央部に前記フィルムを合わせると共に、一対のロー
ルで両者を接合することを特徴としている。The method for producing a laminated steel sheet according to the present invention is based on a strip-shaped steel sheet having a width (A) corresponding to a length obtained by adding a joining margin to the circumference of a can body to be manufactured, and a width (A) of the steel sheet. A somewhat narrower width (B) strip - shaped copolymerized poly
Ester film , each run in the length direction, while adjusting the distance between one side edge of the steel sheet and the side edge of the film to maintain a predetermined size, the film in the center in the width direction of the steel sheet. It is characterized in that both are joined together and both are joined by a pair of rolls.
【０００８】本発明の缶胴は、前記ラミネート鋼板を、
製造しようとしている缶胴の高さに対応する幅（Ｃ）で
切断した鋼シートを、前記両側端部同士が重なるよう
に、筒状に形成し、その重ねた部分同士を互いに接合
し、さらにその接合部の上に補修用の塗料ないしテープ
を塗布ないし被覆していることを特徴としている。[0008] The can body of the present invention comprises:
A steel sheet cut at a width (C) corresponding to the height of the can body to be manufactured is formed into a tubular shape so that the two side ends overlap, and the overlapped portions are joined to each other. It is characterized in that a repair paint or tape is applied or covered on the joint.
【０００９】本発明のラミネート缶は、前記缶胴と、そ
の缶胴の下端に固定した共重合ポリエステルフィルム被
覆鋼板製の底蓋とからなる。The laminate can of the present invention comprises the can body and a bottom cover made of a steel sheet covered with a copolymerized polyester film fixed to the lower end of the can body.
【００１０】本発明の缶胴の製造方法は、製造しようし
ている缶胴の周長に接合代を加えた幅（Ａ）の帯状の鋼
板およびその鋼板の幅（Ａ）よりもいくらか狭い幅
（Ｂ）の帯状の共重合ポリエステルフィルムを、それぞ
れその長さ方向に走行させ、鋼板の一方の側縁と前記フ
ィルムの側縁との間隔を調節しながら鋼板の幅方向にお
ける中央部に前記フィルムを合わせると共に、一対のロ
ールで両者を接合して帯状のラミネート鋼板を製造し、
そのラミネート鋼板を、製造しようとしている缶胴の高
さに対応する幅（Ｃ）で切断して鋼シートを形成し、そ
の鋼シートを両側端部同士が重なるように、筒状に形成
し、その側端部同士を接合することを特徴としている。According to the method for manufacturing a can body of the present invention, a strip-shaped steel sheet having a width (A) obtained by adding a joining margin to the circumference of the can body to be manufactured, and a width somewhat smaller than the width (A) of the steel sheet. The strip - shaped copolyester film of (B) is run in its length direction, and the film is placed at the center in the width direction of the steel sheet while adjusting the distance between one side edge of the steel sheet and the side edge of the film. Along with, a pair of rolls are joined to produce a strip-shaped laminated steel sheet,
The laminated steel sheet is cut at a width (C) corresponding to the height of the can body to be manufactured to form a steel sheet, and the steel sheet is formed into a tubular shape so that both side ends overlap. It is characterized in that its side ends are joined together.
【００１１】本発明のラミネート缶の製造方法は、前記
のごとくして得られた缶胴の下端に、共重合ポリエステ
ルフィルムを被覆したラミネート鋼板製の底蓋を固定す
ることを特徴としている。In the method for producing a laminated can of the present invention, a copolymer polyester is provided at the lower end of the can body obtained as described above.
It is characterized by fixing a bottom lid made of a laminated steel sheet coated with a metal film.
【００１２】本発明のラミネート鋼板においては、鋼板
に被覆されるフィルムが共重合ポリエステル製であるの
で、ポリエステル系又はエポキシ系等の補修用塗料との
密着性が高い。また、 重ね合わせるべき部分にはもと
もとフィルムがないので清浄な素地が保たれて溶接性が
良いと共に、溶接のためのフィルム除去作業を必要とし
ないことから、予めフィルムへの溶接による熱影響等を
考慮して適切な幅の接合代を設けておくことができる。
このため、補修用の塗料等は接着性を確保できるだけの
広い範囲で鋼素材に直接密着し、また、その接着した両
端部分だけがフィルムと密着することになる。ラミネー
トフィルムは、熱影響を受けないため変形したり鋼素材
からの剥れ等が生じることがなくなり、そのため補修用
塗料等の缶体への密着性が一層高くなり、シール性能が
向上して製缶後の缶体、特に接合部近辺の耐久性が確保
される。In the laminated steel sheet of the present invention, since the film coated on the steel sheet is made of copolymerized polyester, it has a high adhesiveness to a polyester-based or epoxy-based repair paint. Also, since there is no film in the area to be overlapped, a clean base is maintained and weldability is improved.
Good and requires film removal work for welding
Since there is no heat effect,
Considering this, it is possible to provide a bonding margin having an appropriate width .
For this reason , the repair paint or the like directly adheres to the steel material in a wide range that can ensure the adhesiveness, and only the adhered end portions adhere to the film. . Lamine
Is not affected by heat,
No peeling from the surface will occur, so the adhesiveness of the repair paint etc. to the can body will be higher, and the sealing performance will be improved.
This improves the durability of the can body after can making, especially near the joint.
【００１３】さらに重ね合わせる部分にフィルムがない
ので、溶接等で両端を接合する前にフィルムを部分的に
切り剥す手間が不要である。そのため溶接缶ブランクを
採る場合には、ラミネート鋼板を長手方向と直角の方向
に、製造しようとしている缶の高さ寸法ごとに裁断する
のみで足り、製缶作業が簡単である。Further, since there is no film in the portion to be overlapped, there is no need to perform the work of partially cutting off the film before joining both ends by welding or the like. Therefore, when a welding can blank is used, it is only necessary to cut the laminated steel sheet in a direction perpendicular to the longitudinal direction for each height dimension of the can to be manufactured, and the can-making operation is simple.
【００１４】本発明のラミネート鋼板の製造法は、それ
ぞれ帯状の、あらかじめ幅の寸法が特定された鋼板とフ
ィルムとを、側縁部の間隔を一定に維持しながら接合し
て行くので、連続的に、寸法精度よく、効率的に前記ラ
ミネート鋼板を製造することができる。According to the method for producing a laminated steel sheet of the present invention, a strip-shaped steel sheet having a predetermined width and a film are joined while maintaining a constant interval between the side edges. In addition, the laminated steel sheet can be efficiently manufactured with high dimensional accuracy.
【００１５】本発明の缶胴およびラミネート缶は、もと
もとフィルムが被覆されていない側縁部同士を重ねて接
合しているので、製造が容易であり、しかも清浄な素地
のままでフィルム樹脂が残らないので溶接の接合強度が
高い。またフィルムが共重合ポリエステル樹脂製である
ので、印刷塗料との密着性が高い特定の補修用塗料との
密着性が高い特定の補修用塗料等との密着性が高く、耐
久性が高い。The can body and the laminated can according to the present invention are easy to manufacture and clean because the side edges not covered with the film are overlapped and joined together.
Since no film resin remains as it is, the joining strength of welding is high. In addition, since the film is made of a copolyester resin, the film has high adhesion to a specific repair paint having high adhesion to a printing paint and has high adhesion to a specific repair paint, and has high durability.
【００１６】本発明の缶胴及びラミネート缶の製造法
は、もともとフィルムが被覆されていない側縁部同士を
重ねて接合するので、製造が容易であり、しかも接合強
度が高い缶胴及びラミネート缶が得られる。またフィル
ムが共重合ポリエステル樹脂からなるので、印刷塗料と
の密着性が高い特定の補修用塗料等との密着性が高い。
そのためフィルムの端部の上に補修用塗料を重ねるよう
に塗装ないし被覆することができ、補修作業が簡単で、
しかも得られる缶胴およびラミネート缶の耐久性が高
い。また共重合ポリエステルフィルムは通常のオーブン
温度では軟化しないので、オーブン中を通過させること
により塗料を乾燥させることができる。In the method for manufacturing a can body and a laminated can according to the present invention, the side edges that are not originally covered with a film are overlapped and joined together, so that the can body and the laminated can are easily manufactured and have high joining strength. Is obtained. In addition, since the film is made of a copolymerized polyester resin, it has high adhesion to a specific repair paint having high adhesion to a printing paint.
As a result, the repair paint can be painted or covered on top of the edge of the film so that the repair work is easy,
Moreover, the durability of the obtained can body and laminated can is high. Further, since the copolymerized polyester film does not soften at a normal oven temperature, the paint can be dried by passing through the oven.
【００１７】[0017]
【実施例】次に本発明の実施例を図面を参照しながら説
明する。図１は本発明のラミネート鋼板の一実施例を示
す概略平面図、図２は図１のII線断面図、 図３は本発明
のラミネート鋼板の製造法の一実施例を示す概略斜視
図、図４〜９は本発明の缶胴およびラミネート缶の製造
法の一実施例を工程順に示しており、図４は裁断工程を
示す平面図、図５は溶接工程を示す斜視図、図６はその
要部拡大断面図、図７は補修工程を示す平面図、図８は
その要部拡大断面図、図９は缶蓋取り付け工程を示す断
面図である。Next, an embodiment of the present invention will be described with reference to the drawings. 1 is a schematic plan view showing one embodiment of the laminated steel sheet of the present invention, FIG. 2 is a sectional view taken along the line II of FIG. 1, FIG. 3 is a schematic perspective view showing one embodiment of the method for producing a laminated steel sheet of the present invention, 4 to 9 show an embodiment of a method for manufacturing a can body and a laminated can according to the present invention in the order of steps, FIG. 4 is a plan view showing a cutting step, FIG. 5 is a perspective view showing a welding step, and FIG. FIG. 7 is a plan view showing a repairing step, FIG. 8 is an enlarged sectional view showing the main part, and FIG. 9 is a sectional view showing a can lid attaching step.
【００１８】図１において、１は素材鋼板（以下、単に
鋼板という）であり、２はその鋼板１の外表面に被覆さ
れたフィルムである。図１に示すように、鋼板１は符号
Ａで示す幅を有しており、フィルム２はそれより狭い幅
Ｂを有している。そしてフィルム２は鋼板１の両端部を
除く全面に被覆されており、両者でラミネート鋼板Ｌを
構成している。なおフィルム２が被覆されていない両端
の領域を、以下、非被覆部３という。フィルム２は鋼板
１の片面のみに設けてもよいが、図２に示すように、鋼
板１の両面に設けるようにしてもよい。図２の場合は、
両面のフィルム２がそれぞれ鋼板１の両端の非被覆部３
を残して被覆されている。In FIG. 1, reference numeral 1 denotes a material steel plate (hereinafter, simply referred to as a steel plate), and reference numeral 2 denotes a film coated on the outer surface of the steel plate 1. As shown in FIG. 1, the steel plate 1 has a width indicated by reference symbol A, and the film 2 has a width B smaller than that. The film 2 covers the entire surface of the steel sheet 1 except for both ends, and the two constitute a laminated steel sheet L. In addition, the area | region of both ends which is not covered with the film 2 is hereafter called the uncoated part 3. The film 2 may be provided on only one side of the steel plate 1, but may be provided on both sides of the steel plate 1 as shown in FIG. In the case of FIG.
Uncoated portions 3 on both ends of the steel plate 1 on both sides of the film 2
Is coated.
【００１９】前記ラミネート鋼板Ｌはたとえば図３に示
すラミネート装置５により製造することができる。その
装置５は、鋼板１を加熱するヒートロール６と、２枚の
フィルム２、２をそれぞれガイドするガイドロール７
と、加熱された鋼板１にフィルム２を加圧して熱溶着す
る一対のラミネートロール８、９とを備えている。ま
た、フィルム２の幅方向の位置を微調節する調節装置
（エッジポジショナ）１０が、たとえばガイドロール７
などに設けられており、フィルム２の側縁位置を検出す
るセンサ１１からの信号に応じてフィルム２の走行位置
を常時一定に調節する。センサ１１としては透過式の光
センサを数個、幅方向に配列したもの等を採用し得る。
なおセンサ１１は通常はフィルム２の片側のみに設ける
が、両側に設けてもよい。また鋼板１の位置を制御する
位置調節装置を、たとえばヒートロール６などに設ける
ようにしてもよい。The laminated steel sheet L can be manufactured by, for example, a laminating apparatus 5 shown in FIG. The apparatus 5 includes a heat roll 6 for heating the steel plate 1 and a guide roll 7 for guiding the two films 2 and 2 respectively.
And a pair of laminating rolls 8 and 9 for pressing the film 2 to the heated steel plate 1 and thermally welding the film 2. Further, an adjusting device (edge positioner) 10 for finely adjusting the position of the film 2 in the width direction is provided with, for example, a guide roll 7.
The running position of the film 2 is constantly adjusted in accordance with a signal from the sensor 11 that detects the side edge position of the film 2. As the sensor 11, a sensor in which several transmission-type optical sensors are arranged in the width direction or the like can be used.
The sensor 11 is usually provided on only one side of the film 2, but may be provided on both sides. Further, a position adjusting device for controlling the position of the steel plate 1 may be provided, for example, on the heat roll 6 or the like.
【００２０】図３の装置５において、鋼板１はヒートロ
ール６によりたとえば１９０〜２２０℃に加熱されたう
えで、ラミネートロール８、９に向かって走行し、それ
らの間に通される。フィルム２、２はガイドロール７か
らラミネートロール８、９に向かって走行し、鋼板１の
表裏両面に重ねられ、高温の鋼板１との接触により加熱
され、接触面が部分的に溶融し、ラミネートロール８、
９の加圧力で、鋼板１の表面に熱溶着される。なお得ら
れたラミネート鋼板Ｌは、巻き取り機等によってコイル
状に巻き取って保管される。In the apparatus 5 shown in FIG. 3, the steel sheet 1 is heated to, for example, 190 to 220 ° C. by the heat roll 6 and then travels toward the laminating rolls 8 and 9 and is passed between them. The films 2 and 2 travel from the guide roll 7 toward the laminating rolls 8 and 9 and are superposed on the front and back surfaces of the steel sheet 1, and are heated by contact with the hot steel sheet 1, and the contact surfaces are partially melted and laminated. Roll 8,
At a pressing force of 9, it is thermally welded to the surface of the steel sheet 1. Note that the obtained laminated steel sheet L is wound up in a coil shape by a winder or the like and stored.
【００２１】前記鋼板１としては、冷延鋼板の他、表面
処理鋼板などが用いられる。表面処理鋼板は、錫めっき
鋼板が通常用いられるが、その他、クロムめっき、亜鉛
めっき、ニッケルめっき、あるいはこれらを積層めっき
した各種のめっき鋼板が挙げられる。しかし良好な溶接
性を確保するには、表裏両面に錫めっきが存在すること
が好ましい。錫めっきの形態は層状、島状を問わない。
まためっき厚は表裏で異なってもよい。As the steel sheet 1, a cold-rolled steel sheet, a surface-treated steel sheet, or the like is used. As the surface-treated steel sheet, a tin-plated steel sheet is usually used, and other examples include chromium plating, zinc plating, nickel plating, and various types of plated steel sheets obtained by laminating these. However, in order to ensure good weldability, it is preferable that tin plating exists on both front and back surfaces. The form of tin plating may be layered or island-shaped.
Also, the plating thickness may be different on the front and back.
【００２２】前記フィルム２は共重合ポリエステル製の
フィルムであり、その共重合ポリエステルとしては、た
とえばポリエチレンテレフタレート共重合体、エチレン
テレフタレート／イソフタレート共重合体等が好ましい
ものとして挙げられる。それらの共重合ポリエステルフ
ィルムは、従来用いられている補修用塗料、例えばエポ
キシ系及びポリエステル系の樹脂塗料（あるいはこれら
と同材質の補修用テープ）との密着性が高い。そのため
それらの補修用の塗料等を溶接部の補修に使用した場
合、共重合ポリエステルフィルムとの接着部から容易に
は剥離しない。The film 2 is a film made of a copolyester. As the copolyester, for example, a polyethylene terephthalate copolymer, an ethylene terephthalate / isophthalate copolymer and the like are preferable. These copolyester films have high adhesiveness to conventionally used repair paints, for example, epoxy and polyester resin paints (or repair tapes of the same material). Therefore, when the repair paint or the like is used for repairing the welded portion, it does not easily peel off from the adhesive portion with the copolymerized polyester film.
【００２３】この理論的根拠はっきりしないが、共重合
成分を添加することにより、結晶化が部分的に阻止され
て非晶質部分が増加し、このため分子鎖が動き易くな
り、塗料との密着性が向上するものと考えられる。なお
塗料等による補修作業後にオーブン等で加熱（たとえば
２００℃）する場合は、耐熱性のあるフィルムを用いる
のが好ましいが、上記共重合ポリエステル塗料は通常の
オーブンの温度では軟化しないので、補修後の缶胴はオ
ーブン中を通過させることにより乾燥させることができ
る。Although the theoretical basis is not clear, the addition of a copolymer component partially inhibits crystallization and increases the amorphous portion, whereby the molecular chains are easily moved, and the adhesion to the paint is increased. It is thought that the property is improved. When heating (for example, 200 ° C.) in an oven or the like after the repair work with a paint or the like, it is preferable to use a heat-resistant film. However, since the above-mentioned copolymerized polyester paint does not soften at a normal oven temperature, Can be dried by passing through an oven.
【００２４】上記種々のポリエステルフィルムは、耐熱
性、耐食性、鋼板との接着性に関してそれぞれ異なる特
徴を有するので、缶の内容物の種類に応じてポリエステ
ルフィルムの種類を使い分けるのが好ましい。前記の熱
溶着だけではこれらの共重合ポリエステルフィルムの鋼
板への接着性が充分でない場合は、例えば、エポキシ系
接着剤、フェノール系接着剤、アミド系接着剤、ウレタ
ン系接着剤、酸変性オレフィン系接着剤、コポリアミド
系接着剤、コポリエステル系接着剤、またはこれらのブ
レンド物などの各種の接着剤により接着するようにして
もよい。Since the above-mentioned various polyester films have different characteristics with respect to heat resistance, corrosion resistance, and adhesion to a steel plate, it is preferable to use different types of polyester films according to the type of the contents of the can. When the adhesiveness to the steel sheet of these copolymerized polyester films is not sufficient only by the heat welding, for example, epoxy-based adhesive, phenol-based adhesive, amide-based adhesive, urethane-based adhesive, acid-modified olefin-based The bonding may be performed using various adhesives such as an adhesive, a copolyamide-based adhesive, a copolyester-based adhesive, or a blend thereof.
【００２５】共重合ポリエステルフィルムの厚さは、一
般に、３〜５０μｍの範囲にあることが望ましい。厚さ
が３μｍ以下の場合は前記被覆作業（図２参照）の作業
性が著しく低下すると共に、ピンホールが発生し易くな
るので、充分な耐食性が得られず、一方、５０μｍを超
える場合は、製缶分野で広く用いられている塗料と比較
して経済的でないからである。Generally, it is desirable that the thickness of the copolymerized polyester film is in the range of 3 to 50 μm. When the thickness is 3 μm or less, the workability of the coating operation (see FIG. 2) is remarkably reduced, and pinholes are easily generated, so that sufficient corrosion resistance cannot be obtained. On the other hand, when the thickness exceeds 50 μm, This is because it is not economical as compared with paints widely used in the field of cans.
【００２６】上記のごとく構成されるラミネート鋼板Ｌ
は、後述するように溶接缶等の缶胴を成形する素材とし
て用いられる。すなわち図１のラミネート鋼板Ｌは非被
覆部３が鋼板１の両端部に沿って一定の幅で延在してい
るが、これは缶の製造時のブランク採りをした後、缶胴
成形に当たって非被覆部３同士を重ねて溶接などで接合
しやすくするためである。また鋼板１の幅Ａは図５に示
すように、製造しようとしている缶胴の周長に接合代、
すなわち接合のための重ね合わせ代（ラップ代）を加え
た寸法であり、前記非被覆部３の幅を一定にしているの
は、そのラップ代を充分に確保するためである。したが
って鋼板１の幅Ａおよびフィルム２の幅Ｂは、製造しよ
うとしている缶の種類、とくに大きさによって定めら
れ、例えば１８リッター缶のような大型缶に用いるか、
あるいは美術缶、または化粧缶のような小型缶に用いる
かにより寸法が異なる。The laminated steel sheet L constructed as described above
Is used as a material for forming a can body such as a welding can as described later. That is, the uncoated portion 3 of the laminated steel sheet L in FIG. 1 has a constant width extending along both end portions of the steel sheet 1. This is because the coating portions 3 are overlapped with each other and are easily joined by welding or the like. Further, as shown in FIG. 5, the width A of the steel sheet 1 depends on the margin of the can body to be manufactured,
That is, the dimension is the sum of the overlap margin (lap margin) for joining, and the reason why the width of the uncovered portion 3 is made constant is to ensure a sufficient lap margin. Therefore, the width A of the steel plate 1 and the width B of the film 2 are determined by the type of the can to be manufactured, particularly the size, and are used for a large can such as an 18 liter can,
Alternatively, the dimensions are different depending on whether it is used for a small can such as an art can or a cosmetic can.
【００２７】次に図４〜７を参照しながら本発明の缶
胴、ラミネート缶及びそれらの製造法を説明する。前記
ラミネート鋼板Ｌにより、例えば溶接缶を製造する場
合、まず図４に示すように、製造しようとしている缶胴
の高さ（Ｃ）に合わせてラミネート鋼板Ｌをその長手方
向（矢印Ｎ）に対して直角に裁断する。それにより両端
に一定幅Ｅ（＝（Ａ−Ｂ）／２）の非被覆部３を有し、
幅がＡ、高さがＣの矩形状のブランクシート１３が得ら
れる。Next, with reference to FIGS. 4 to 7, the can body and the laminated can of the present invention and a method for producing them will be described. In the case of manufacturing a welding can, for example, from the laminated steel sheet L, first, as shown in FIG. 4, the laminated steel sheet L is moved in the longitudinal direction (arrow N) according to the height (C) of the can body to be manufactured. Cut at right angles. As a result, there are uncoated portions 3 having a constant width E (= (AB) / 2) at both ends,
A rectangular blank sheet 13 having a width A and a height C is obtained.
【００２８】次いでこのようにあらかじめ溶接個所を定
めて裁断したブランクシート１３を、非被覆部３同士が
向かい合うように、かつ所定のラップ代ｂで重なるよう
に角形または丸形などの筒状に折り曲げ成形する（図５
参照）。そして図６に示すように、そのラップ部分（溶
接部）１４を溶接電極で挟み、加圧して溶接する。前記
ラップ代ｂはラミネート鋼板の大きさや厚さ、缶の大き
さにより異なるが、通常０．３〜３mm程度であり、より
好ましくは１．５mm前後である。Next, the blank sheet 13 cut and cut in such a manner that the welding portion is determined in advance is bent into a rectangular or round cylindrical shape so that the uncovered portions 3 face each other and overlap with a predetermined wrap margin b. Molding (Fig. 5
reference). Then, as shown in FIG. 6, the lap portion (weld portion) 14 is sandwiched between welding electrodes and welded by applying pressure. The wrap margin b varies depending on the size and thickness of the laminated steel sheet and the size of the can, but is usually about 0.3 to 3 mm, more preferably about 1.5 mm.
【００２９】前記非被覆部３の幅Ｅは、そのラップ代お
よび缶の大きさを考慮に入れて決定される。たとえば１
８リッター缶等の大型缶では、非被覆部３の幅Ｅは通常
３〜１５ｍｍ程度に設定される。この幅は、前記ラップ
代に対して溶接の際のラミネートフィルムへの熱影響と
溶接後の非被覆部に対する補修用塗料等を施す際の接着
力を確保するに十分な幅を考慮して定める。本発明の缶
胴製造方法及び缶胴の構造によれば、この幅の設定・変
更は容易であり、缶の種類に応じた寸法の変更等に容易
に対処することができる。 この非被覆部３の幅Ｅは小型
缶では大型缶の場合より小さく設定され、およそ１〜５
ｍｍ程度である。なお溶接に代えて、ハンダ付けや接着
など、他の接合手段を採用することもできる。The width E of the uncovered portion 3 is determined in consideration of the wrap margin and the size of the can. For example, 1
In a large can such as an 8-liter can, the width E of the uncoated portion 3 is usually set to about 3 to 15 mm. This width depends on the wrap
Effect on the laminate film during welding and the cost
Adhesion when applying repair paint etc. to uncovered parts after welding
Determined by considering the width sufficient to secure the power. The can of the present invention
According to the body manufacturing method and the structure of the can body, this width can be set or changed.
It is easy to change the size according to the type of can
Can be dealt with. The width E of the uncovered portion 3 is set smaller in a small can than in a large can, and is about 1 to 5
mm. Instead of welding, other joining means such as soldering or bonding can be adopted.
【００３０】次に溶接した部分を含め、非被覆部３の全
体、すなわち図７の缶胴１５の内面側及び外面側の両面
の非被覆部３に、熱可撓性樹脂または熱硬化性樹脂の補
修用塗料を塗布し、樹脂皮膜（塗膜）１６を形成して、
耐食性を確保する。そのとき鋼板１の素地が露出状態で
残らないように、補修用塗料はフィルム２の端部まで覆
うように、充分塗布する（図８参照）。補修に用いる塗
料は従来使用されている補修用途料であれば、液状の塗
料でも、また粉体塗料のような固体状のものでもよい
が、共重合ポリエステル製のフィルム２との密着性が高
いものを選択する。なお塗料で塗膜１６を形成すること
に代えて、テープ状の樹脂フィルム（補修用テープ）を
熱融着して補修することもできる。Next, the entire non-coated portion 3 including the welded portion, that is, the non-coated portion 3 on both the inner surface and the outer surface of the can body 15 in FIG. Applying the repair paint of the above, forming a resin film (coating) 16
Ensure corrosion resistance. At this time, the repair paint is sufficiently applied so as to cover the end of the film 2 so that the base of the steel sheet 1 does not remain in an exposed state (see FIG. 8). The paint used for the repair may be a liquid paint or a solid paint such as a powder paint, as long as it is a conventionally used repair use material, but has high adhesion to the copolymer polyester film 2. Choose one. Instead of forming the coating film 16 with a paint, a tape-shaped resin film (repair tape) may be repaired by heat fusion.
【００３１】次に上記のごとく構成される筒状の缶胴１
５の下部、あるいは上下部の両方に、図９で示す缶蓋
（又は缶底、以下缶蓋という）１６、１７を固定する。
缶蓋１６、１７は図１のラミネート鋼板Ｌないしそれと
同等のものを角型にブランキングし、有底筒状に絞り成
形し、トリミング加工したものである。缶蓋１６、１７
は缶胴１５の上下の開口部に嵌合し、周囲の立ち上り部
１８をリング状のシールパッキンを介在させた上で缶胴
１５の端部に巻き締め加工すること等により固定する。
缶胴１５の開口部は、ラミネート鋼板から裁断された侭
のラミネートフィルムで被覆された端縁部をなすが、こ
れらのスリーピース缶においては缶蓋１６、１７は巻き
締め加工により固定されるため、被覆フィルムはシール
パッキンと共にシール性を確保する上で有効である。な
お図９では缶胴１５の上下部の両方に缶蓋１６、１７を
固定しているが、ペール缶等では下部のみに缶蓋を固定
する。Next, the cylindrical can body 1 constructed as described above
The can lids (or can bottoms, hereinafter referred to as can lids) 16 and 17 shown in FIG.
The can lids 16 and 17 are formed by blanking the laminated steel plate L of FIG. 1 or its equivalent into a square shape, drawing it into a cylindrical shape with a bottom, and trimming. Can lids 16, 17
Are fitted into the upper and lower openings of the can body 15, and the surrounding rising portion 18 is fixed to the end of the can body 15 by being wound around the end of the can body 15 with a ring-shaped seal packing interposed therebetween.
The opening of the can body 15 remains cut from the laminated steel sheet.
The edge covered with the laminated film of
In these three-piece cans, the can lids 16 and 17 are rolled
The coating film is sealed because it is fixed by tightening
It is effective in securing the sealing property together with the packing . In FIG. 9, the can lids 16 and 17 are fixed to both the upper and lower portions of the can body 15, but in a pail can or the like, the can lids are fixed only to the lower portion.
【００３２】上記のごとくして構成されるラミネート缶
は、缶胴の接合部の補修用塗料または補修用テープが素
材の鋼板だけでなく、フィルム２に対しても充分な密着
性を備えているので、耐食性が高い利点がある。In the laminate can constructed as described above, the repair paint or the repair tape at the joint of the can body has sufficient adhesion not only to the steel plate of the material but also to the film 2. Therefore, there is an advantage of high corrosion resistance.
【００３３】次に本発明の効果を示すため、具体的な実
施例を挙げて説明する。 （実施例１）板圧０．２１mm、板幅９０４mmの鋼板の表
裏両面に、１５０mg／ｍ2 の錫めっき層と、クロムとし
て１０mg／ｍ2 のクロム水和酸化物のめっき層とをその
順に形成した。つぎにその表面処理鋼板の両端部に２０
mm幅の非被覆部を残すように、表裏に二軸延伸のポリエ
チレンテレフタレート共重合フィルムを被覆した。その
フィルムの諸元及び被覆方法は下記の通りである。Next, in order to show the effect of the present invention, a specific example will be described. (Example 1) A tin plating layer of 150 mg / m 2 and a plating layer of chromium hydrated oxide of 10 mg / m 2 as chromium were formed on both sides of a steel plate having a plate pressure of 0.21 mm and a width of 904 mm. Formed. Next, 20
A biaxially stretched polyethylene terephthalate copolymer film was coated on the front and back so as to leave an uncoated portion having a width of mm. The specifications and coating method of the film are as follows.
【００３４】フィルムの厚さ ２０μｍ フィルムの融点 ２３０℃ 鋼板の加熱方法 ヒータロール方式 被覆直前の鋼板の温度 ２２０℃ 被覆後の冷却方法 急冷Film thickness 20 μm Melting point of film 230 ° C. Heating method of steel sheet Heater roll method Temperature of steel sheet just before coating 220 ° C. Cooling method after coating Rapid cooling
【００３５】得られたラミネート鋼板を１８リッター缶
用の溶接缶用のブランクシートの所定寸法に裁断し、溶
接試験を行ったが、溶接熱によるフィルムの剥離もな
く、良好に溶接できた。さらにその溶接缶の溶接部分を
含む非被覆部にポリエステル塗料を塗布し、溶接部分を
補修した。その後、補修部分の剥離試験を行ったが、試
験結果は良好であった。なお剥離試験はつぎの要領で行
った。The obtained laminated steel sheet was cut into a predetermined size of a blank sheet for a welding can for an 18 liter can, and a welding test was carried out. As a result, the film was successfully welded without peeling of the film due to welding heat. Further, a polyester paint was applied to an uncovered portion including a welded portion of the weld can to repair the welded portion. Thereafter, a peeling test of the repaired portion was performed, and the test result was good. The peel test was performed in the following manner.
【００３６】５mm角の碁盤目状にナイフでカットを入
れ、その上にセロファンテープを接着させ、急激にセロ
ファンテープを剥離させた。その剥離試験により密着力
の弱い部分があればその部分の塗料が剥離するが、実施
例１のラミネート鋼板の場合は、共重合ポリエステルフ
ィルムとポリエステル系塗料との密着性が良好であるた
め、補修用のポリエステル塗料の剥離はまったく見られ
なかった。A 5 mm square cross cut was made with a knife, a cellophane tape was adhered thereon, and the cellophane tape was rapidly peeled off. In the peeling test, if there is a portion having a weak adhesive force, the paint in that portion is peeled off. However, in the case of the laminated steel sheet of Example 1, since the adhesion between the copolymerized polyester film and the polyester-based paint is good, it is repaired. No peeling of the polyester coating was observed.
【００３７】（実施例２）板圧０．２１mm、板幅９０４
mmの鋼板の表裏両面に、２．８mg／ｍ2 の錫めっき層
と、クロムとして１０mg／ｍ2 のクロム水和酸化物のめ
っき層とをその順に形成した。つぎにその表面処理鋼板
の両端部に２０mmの幅の非被覆部を残すようにして、表
裏にエチレンテレフタレート／イソフタレート共重合フ
ィルムを被覆した。(Example 2) Sheet pressure 0.21 mm, sheet width 904
A 2.8 mg / m 2 tin plating layer and a 10 mg / m 2 chromium hydrated oxide plating layer as chromium were formed in this order on both the front and back sides of a steel plate of mm. Next, an ethylene terephthalate / isophthalate copolymer film was coated on the front and back so as to leave uncoated portions having a width of 20 mm at both ends of the surface-treated steel sheet.
【００３８】フィルムの厚さ １５μｍ フィルムの融点 ２６０℃ 鋼板の加熱方法 ヒータロール方式 被覆直前の鋼板の温度 ２７５℃ 被覆後の冷却方法 急冷Film thickness 15 μm Melting point of film 260 ° C. Heating method of steel sheet Heater roll method Temperature of steel sheet just before coating 275 ° C. Cooling method after coating Rapid cooling
【００３９】得られたラミネート鋼板を、寸法９０４×
３５５（幅×長さ）の美術缶用の溶接缶用のブランクシ
ートの所定寸法に裁断し、溶接試験を行ったが、溶接熱
によるフィルムの剥離もなく、良好に溶接できた。さら
にその溶接缶の溶接部分をポリブチレンテレフタレート
フィルムで被覆補修したが、補修部分の剥離もなく良好
であった。The obtained laminated steel sheet was sized to 904 ×
A 355 (width x length) blank sheet for art cans was cut to a predetermined size and subjected to a welding test. The film was successfully welded without peeling of the film due to welding heat. Further, the welded portion of the weld can was covered and repaired with a polybutylene terephthalate film, but the repaired portion was good without peeling.
【００４０】[0040]
【発明の効果】 本発明のラミネート鋼板は、両端に非
被覆部を設け、かつフィルムとして共重合ポリエステル
フィルムを採用しているので、溶接性が良く鋼板の端部
同士の接合強度が高く、補修用塗料ないしテープとの密
着性が優れている。そのため補修部分を含めた缶全体の
耐食性が高い。さらに接合すべき両端部のフィルムが予
め除かれ、また缶胴の上下端の缶蓋固定部となる端縁部
はフィルム被覆が形成された構成となるため、鋼板の幅
方向と缶胴の周方向を合わせ、缶の高さの幅で鋼板を裁
断してブランキングするのみで、筒状に形成して溶接す
る工程及び缶蓋を固定する工程が可能であるため、接合
加工時の前処理などの一連の工程が簡単である。本発明
のラミネート鋼板の製造法によれば、前記ラミネート鋼
板を連続的に効率よく製造することができる。EFFECT OF THE INVENTION The laminated steel sheet of the present invention is provided with uncoated portions at both ends and employs a copolymerized polyester film as a film, so that the weldability is good , the joining strength between the ends of the steel sheet is high, and the steel sheet is repaired. Excellent adhesion to paints and tapes. Therefore, the corrosion resistance of the whole can including the repair part is high. In addition, the film at both ends to be joined is removed in advance, and the edge that becomes the can lid fixing part at the upper and lower ends of the can body
Is a structure with a film coating, so the width of the steel plate
Align the direction with the circumferential direction of the can body and cut the steel plate at the width of the can height.
Only by cutting and blanking.
And a step of fixing the can lid, a series of steps such as a pretreatment at the time of the joining process are simple. According to the method for producing a laminated steel sheet of the present invention, the laminated steel sheet can be continuously and efficiently produced.
【００４１】本発明の缶胴及びそれを用いたラミネート
缶は、素材となるラミネート鋼板のラミネートフィルム
として共重合ポリエステルフィルムを採用しているの
で、鋼板の端部同士の接合強度が高く、補修用塗料ない
しテープとの密着性が優れている。そのため補修部分を
含めた缶全体の耐食性が高い。さらに接合すべき両端部
のフィルムがあらかじめ除かれているので、接合加工時
の前処理などが容易で製造が簡単である。Since the can body of the present invention and the laminated can using the same employ a copolymerized polyester film as a laminate film of a laminated steel sheet as a material, the joining strength between the ends of the steel sheet is high, and Excellent adhesion to paint or tape. Therefore, the corrosion resistance of the whole can including the repair part is high. Further, since the films at both ends to be joined are removed in advance, the pre-processing at the time of joining is easy and the production is simple.
【００４２】本発明の缶胴およびラミネート缶の製造法
によれば、耐食性が高い缶胴及びラミネート缶を効率よ
く製造することができる。According to the method for producing a can body and a laminated can of the present invention, a can body and a laminated can having high corrosion resistance can be produced efficiently.
【図１】本発明のラミネート鋼板の一実施例を示す概略
平面図である。FIG. 1 is a schematic plan view showing one embodiment of a laminated steel sheet of the present invention.
【図２】図１のII線断面図である。FIG. 2 is a sectional view taken along line II of FIG.
【図３】本発明のラミネート鋼板の製造法の一実施例を
示す概略斜視図である。FIG. 3 is a schematic perspective view showing one embodiment of the method for producing a laminated steel sheet of the present invention.
【図４】本発明の缶胴及びラミネート缶の製造法の一実
施例における裁断工程を示す平面図である。FIG. 4 is a plan view showing a cutting step in an embodiment of the method for producing a can body and a laminated can of the present invention.
【図５】本発明の缶胴及びラミネート缶の製造法の一実
施例における溶接工程を示す斜視図、FIG. 5 is a perspective view showing a welding step in an embodiment of the method for manufacturing a can body and a laminated can according to the present invention;
【図６】図５の要部拡大断面図である。FIG. 6 is an enlarged sectional view of a main part of FIG. 5;
【図７】本発明の缶胴及びラミネート缶の製造法の一実
施例における補修工程を示す平面図FIG. 7 is a plan view showing a repairing step in an embodiment of the method for producing a can body and a laminated can according to the present invention.
【図８】図７の要部拡大断面図である。FIG. 8 is an enlarged sectional view of a main part of FIG. 7;
【図９】本発明の缶胴及びラミネート缶の製造法の一実
施例における缶蓋取り付け工程を示す断面図である。FIG. 9 is a cross-sectional view showing a can lid attaching step in one embodiment of the method for producing a can body and a laminated can according to the present invention.
１ 鋼板 ２ フィルム ３ 非被覆部 １５ 缶胴 １６ 缶蓋（又は缶底） １７ 缶蓋（又は缶底） Ｌ ラミネート鋼板 Ａ 鋼板の幅 Ｂ フィルムの幅 Ｃ 缶の高さ ｂ 接合代 Reference Signs List 1 steel plate 2 film 3 uncoated portion 15 can body 16 can lid (or can bottom) 17 can lid (or can bottom) L laminated steel sheet A steel sheet width B film width C can height b joining allowance
Claims (6)
覆されたフィルムとからなるラミネート鋼板であって、
前記フィルムが共重合ポリエステルフィルムであり、か
つ、前記鋼板の幅（Ａ）が製造しようとしている缶胴の
周長に接合代を加えた長さに対応しており、前記フィル
ムが、鋼板より狭い幅（Ｂ）を有すると共に、鋼板の両
側端部を除く部分に被覆されてなるラミネート鋼板。1. A laminated steel sheet comprising a strip-shaped steel sheet and a film coated on one or both sides thereof,
The film is a copolyester film , and the width (A) of the steel plate corresponds to a length obtained by adding a bonding margin to a circumferential length of a can body to be manufactured, and the film is narrower than the steel plate. A laminated steel sheet having a width (B) and being coated on portions except for both side edges of the steel sheet.
法であって、帯状の鋼板の幅（Ａ）よりもいくらか狭い
幅（Ｂ）の共重合ポリエステルフィルムを、それぞれそ
の長さ方向に走行させ、鋼板の一方の側縁と前記フィル
ムの側縁との間隔が所定の寸法を維持するように調節し
ながら鋼板の幅方向における中央部に前記フィルムを合
わせると共に、一対のロールで両者を接合するラミネー
ト鋼板の製造方法。2. The method for producing a laminated steel sheet according to claim 1, wherein a copolyester film having a width (B) somewhat smaller than the width (A) of the strip-shaped steel sheet is run in its length direction. While adjusting the distance between one side edge of the steel sheet and the side edge of the film so as to maintain a predetermined dimension, the film is fitted to the central portion in the width direction of the steel sheet, and both are joined by a pair of rolls. Manufacturing method of laminated steel sheet.
しようとしている缶胴の高さに対応する幅（Ｃ）で切断
したブランクシートを、前記両側端部同士が重なるよう
に、筒状に形成し、その重ねた部分同士を互いに接合し
てなる缶胴。3. A blank sheet obtained by cutting the laminated steel sheet according to claim 1 at a width (C) corresponding to the height of a can body to be manufactured, into a tubular shape so that the two side ends overlap each other. A can body formed and joined to each other with overlapping portions.
に固定した共重合ポリエステルフィルム被覆鋼板製の底
蓋とからなるラミネート缶。4. A laminated can comprising the can body according to claim 3, and a bottom cover made of a steel sheet coated with a copolymerized polyester film fixed to a lower end of the can body.
代を加えた幅の帯状の鋼板の幅（Ａ）よりもいくらか狭
い幅（Ｂ）の帯状の共重合ポリエステルフィルムを、そ
れぞれその長さ方向に走行させ、鋼板の一方の側縁と前
記フィルムの側縁との間隔を調節しながら鋼板の幅方向
における中央部に前記フィルムを合わせると共に、一対
のロールで両者を接合して帯状のラミネート鋼板を製造
し、そのラミネート鋼板を、製造しようとしている缶胴
の高さに対応する幅（Ｃ）で切断してブランクシートを
形成し、そのブランクシートを両側端部同士が重なるよ
うに、筒状に形成し、その側端部同士を接合するラミネ
ート缶の缶胴の製造方法。5. A strip - shaped copolyester film having a width (B) somewhat smaller than a width (A) of a strip-shaped steel sheet having a width obtained by adding a joining margin to a circumferential length of a can body to be manufactured. Run in the vertical direction, while adjusting the distance between one side edge of the steel sheet and the side edge of the film, aligning the film with the central portion in the width direction of the steel sheet, and joining the two with a pair of rolls to form a strip. A laminated steel sheet is manufactured, and the laminated steel sheet is cut at a width (C) corresponding to the height of the can body to be manufactured to form a blank sheet, and the blank sheet is overlapped at both ends. A method for manufacturing a can body of a laminated can, which is formed in a cylindrical shape and whose side ends are joined to each other.
共重合ポリエステルフィルムを被覆したラミネート鋼板
製の底蓋を固定するラミネート缶の製造方法。6. The lower end of the can body obtained according to claim 5,
A method for producing a laminated can for fixing a bottom lid made of a laminated steel sheet coated with a copolymerized polyester film .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5314421A JP2888321B2 (en) | 1993-02-25 | 1993-11-18 | Laminated steel sheet, can body and laminated can, and methods for producing them |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6255993 | 1993-02-25 | ||
| JP5-62559 | 1993-02-25 | ||
| JP5314421A JP2888321B2 (en) | 1993-02-25 | 1993-11-18 | Laminated steel sheet, can body and laminated can, and methods for producing them |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8300813A Division JPH09117989A (en) | 1996-10-28 | 1996-10-28 | Laminated steel plate, boiler drum, laminated boiler and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0776058A JPH0776058A (en) | 1995-03-20 |
| JP2888321B2 true JP2888321B2 (en) | 1999-05-10 |
Family
ID=26403603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5314421A Expired - Lifetime JP2888321B2 (en) | 1993-02-25 | 1993-11-18 | Laminated steel sheet, can body and laminated can, and methods for producing them |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2888321B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6102840B2 (en) * | 2014-06-26 | 2017-03-29 | Ｊｆｅスチール株式会社 | Method and apparatus for managing film removal width of laminated steel sheet |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03236954A (en) * | 1990-02-14 | 1991-10-22 | Nippon Steel Corp | Film laminating steel belt for three-piece can and its manufacture |
-
1993
- 1993-11-18 JP JP5314421A patent/JP2888321B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0776058A (en) | 1995-03-20 |
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