JP2001088241A - Film laminated metal plate for container - Google Patents
Film laminated metal plate for containerInfo
- Publication number
- JP2001088241A JP2001088241A JP26898999A JP26898999A JP2001088241A JP 2001088241 A JP2001088241 A JP 2001088241A JP 26898999 A JP26898999 A JP 26898999A JP 26898999 A JP26898999 A JP 26898999A JP 2001088241 A JP2001088241 A JP 2001088241A
- Authority
- JP
- Japan
- Prior art keywords
- container
- metal plate
- film
- free energy
- laminated metal
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、主として、食品缶
詰の缶胴及び蓋に用いられるラミネート金属板に関する
ものである。さらに詳しくは、製缶工程での成形性及び
密着性が良好であり、内容物充填後の内容物取り出し性
に優れる容器用ラミネート金属板に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated metal plate used mainly for can bodies and lids of canned foods. More specifically, the present invention relates to a laminated metal plate for a container which has good moldability and adhesion in a can-making process, and is excellent in taking out contents after filling the contents.
【０００２】[0002]
【従来の技術】従来、食缶に用いられる金属缶用素材で
あるティンフリースチール（ＴＦＳ）およびアルミニウ
ム等の金属板には塗装が施されていた。この塗装を施す
技術は、焼き付け工程が複雑であるばかりでなく、多大
な処理時間を必要とし、さらに多量の溶剤を排出すると
いう問題を抱えていた。そこで、これらの問題を解決す
るため、熱可塑性樹脂フィルムを加熱した金属板に積層
する方法が数多く提案されている。2. Description of the Related Art Conventionally, metal plates such as tin-free steel (TFS) and aluminum, which are materials for metal cans used for food cans, have been coated. This coating technique has problems that not only the baking process is complicated, but also requires a great deal of processing time and that a large amount of solvent is discharged. Therefore, in order to solve these problems, many methods of laminating a thermoplastic resin film on a heated metal plate have been proposed.
【０００３】これらの提案の多くは、フィルムと基材で
ある金属板の密着性及び成形性の改善に関するものであ
り、その技術的思想は、概ね極性基を有するフィルム
（ポリエステル樹脂等）の適用（例えば、特開昭６３−
２３６６４０号公報等）、フィルム表面へのコロナ放
電等の処理による活性化等に代表される表面自由エネル
ギーの増大（例えば、特開平５−２００９６１号公報
等）に関するものである。特開平５−２００９６１号公
報には、ポリエチレン樹脂被覆金属板の加工後密着性等
を確保するために、フィルムの表面自由エネルギーを３
８〜５４dyn/cmの範囲に規定することが具体的に記載さ
れている。Many of these proposals relate to the improvement of the adhesion and moldability between a film and a metal plate as a base material, and the technical idea is generally based on the application of a film having a polar group (such as a polyester resin). (For example, see JP-A-63-
JP-A-236640), and an increase in surface free energy typified by activation by treatment such as corona discharge on the film surface (for example, JP-A-5-200961). Japanese Patent Application Laid-Open No. 5-200961 discloses that the surface free energy of a film is reduced by 3 in order to secure adhesion after processing a polyethylene resin-coated metal plate.
It is specifically described that the amount is specified in the range of 8 to 54 dyn / cm.
【０００４】前記で提案されているラミネート金属板を
食品缶詰用途に使用すると、容器から内容物を取り出す
際に、内容物が容器内面に強固に付着してしまい、内容
物を取り出しにくいという問題がある。この問題は、消
費者の購買意欲と密接に関係するため、内容物の取り出
しやすさを改善することは、消費者の購買意欲を確保す
る上で極めて重要である。それにもかかわらず、これま
で内容物の取り出し易さの改善に対する考慮は全くなさ
れていない。[0004] When the laminated metal plate proposed above is used for food canning, there is a problem in that when the contents are taken out of the container, the contents adhere firmly to the inner surface of the container, and it is difficult to take out the contents. is there. Since this problem is closely related to the consumer's willingness to purchase, it is extremely important to improve the ease of taking out contents in order to ensure the consumer's willingness to purchase. Nevertheless, no consideration has been given to improving the ease of taking out the contents.
【０００５】[0005]
【発明が解決しようとする課題】よって本発明は、上記
事情を考慮し、内容物取り出し性を確保するとともに、
容器加工に要求される密着性及び成形性を兼ね備えた容
器用フィルムラミネート金属板を提供することを目的と
する。SUMMARY OF THE INVENTION Accordingly, the present invention has been made in consideration of the above circumstances, and has a feature of ensuring that contents can be taken out.
An object of the present invention is to provide a film-laminated metal plate for a container having both the adhesiveness and moldability required for container processing.
【０００６】[0006]
【課題を解決するための手段】本発明者らは、上記課題
を解決するために鋭意検討した結果、フィルム表面の自
由エネルギーを適正な数値範囲に規定することで、この
目的が達成されることを見出し、本発明に到達した。す
なわち本発明の要旨は以下のとおりである。Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, have found that this object can be achieved by defining the free energy of the film surface in an appropriate numerical range. And arrived at the present invention. That is, the gist of the present invention is as follows.
【０００７】（１）両面に樹脂フィルムラミネート層を
有する容器用金属板であって、容器成形後に容器内面側
になる樹脂フィルムの内容物と接する側の面の表面自由
エネルギーγS が、１０dyn/cm以上３０dyn/cm未満であ
ることを特徴とする内容物取り出し性に優れた容器用フ
ィルムラミネート金属板（第１発明）。(1) A metal plate for a container having a resin film laminated layer on both sides, and the surface free energy γ S of the surface in contact with the contents of the resin film, which becomes the inner surface of the container after the container is formed, is 10 dyn / A film-laminated metal plate for a container having excellent content take-out property, which is not less than 30 cm / dyn / cm and less than 30 dyn / cm (first invention).
【０００８】（２）樹脂フィルムが、ポリプロピレンフ
ィルムまたはポリプロピレンを主成分とするプロピレン
・エチレン系ランダム共重合体フィルムであり、あるい
はさらに該樹脂フィルムが、金属板に密着する側に極性
基を含む樹脂の密着層を有することを特徴とする前記
（１）に記載の内容物取り出し性及び成形性に優れた容
器用フィルムラミネート金属板（第２発明）。(2) The resin film is a polypropylene film or a propylene / ethylene random copolymer film containing polypropylene as a main component, or the resin film contains a polar group on the side in close contact with the metal plate. The film-laminated metal plate for a container according to the above (1), which has an excellent adhesion property and moldability (second invention).
【０００９】（３）容器成形後に容器外面側になる樹脂
フィルムの外面側の表面自由エネルギーγS が、２５dy
n/cm以上であることを特徴とする前記（１）または
（２）に記載の内容物取り出し性及び成形性に優れた容
器用フィルムラミネート金属板（第３発明）。(3) The surface free energy γ S on the outer surface side of the resin film on the outer surface side of the container after forming the container is 25 dy
The film-laminated metal plate for a container according to the above (1) or (2), which is excellent in content takeout property and moldability (third invention), which is at least n / cm.
【００１０】（４）ラミネート前の金属板の表面自由エ
ネルギーγS が、樹脂フィルムの金属板に密着する側の
面の表面自由エネルギーより大きいことを特徴とする前
記（１）〜（３）のいずれかに記載の内容物取り出し性
及び成形性に優れた容器用フィルムラミネート金属板
（第４発明）。(4) The surface free energy γ S of the metal plate before lamination is larger than the surface free energy of the surface of the resin film on the side close to the metal plate, as described in the above items (1) to (3). The film-laminated metal plate for a container according to any one of the above (4th invention), which is excellent in content takeout property and moldability.
【００１１】[0011]
【発明の実施の形態】以下、本発明について詳細に説明
する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
【００１２】本発明では、容器成形後に容器内面側にな
る樹脂フィルムの内容物と接する側の面の表面自由エネ
ルギーγS は１０dyn/cm以上３０dyn/cm未満でなければ
ならない（第１発明）。３０dyn/cm未満に限定した理由
は、３０dyn/cm以上となると、樹脂フィルムと内容物と
の密着力が過度となり、内容物の取り出し性が劣るため
である。また、１０dyn/cm以上に限定した理由は、１０
dyn/cm未満では内容物取り出し性がほぼ飽和してしまい
特段の効果が得られないとともに、技術的にも製造が難
しい領域でありコスト高を招いてしまうためである。内
容物の取り出し性がより重視される場合、樹脂フィルム
の内容物と接する側の面の表面自由エネルギーを２２dy
n/cm未満とするのが適切である。In the present invention, the surface free energy γ S of the surface of the resin film, which is on the inner surface side of the container after molding, is in the range of 10 dyn / cm to less than 30 dyn / cm (first invention). The reason why the content is limited to less than 30 dyn / cm is that when the content is 30 dyn / cm or more, the adhesion between the resin film and the content becomes excessive, and the takeout property of the content is poor. The reason for limiting to 10 dyn / cm or more is that
If it is less than dyn / cm, the content take-out property is almost saturated, so that no particular effect can be obtained. In addition, it is technically difficult to manufacture and the cost is increased. If the ability to take out the contents is more important, the surface free energy of the surface in contact with the contents of the resin film should be 22 dy.
It is appropriate to be less than n / cm.
【００１３】図１（Ａ）は、本発明のラミネート金属板
の、容器成形後に容器内面側になる部分の断面図であ
る。第１発明において表面自由エネルギーを規定した面
は、金属板との密着面側でなく内容物と接する外面側
になるようにラミネートされる。FIG. 1A is a cross-sectional view of a portion of the laminated metal plate of the present invention which is on the inner surface side of the container after the container is formed. In the first invention, the surface on which the surface free energy is defined is laminated not on the side of the surface in contact with the metal plate but on the side of the outer surface in contact with the contents.
【００１４】フィルムの表面自由エネルギーは、ラミネ
ート前後で殆ど変化しない。従って、予めフィルムの表
面自由エネルギーを本発明範囲にしたフィルムを準備
し、このフィルムを金属板にラミネートして、本発明の
ラミネート金属板を得ることができる。The surface free energy of the film hardly changes before and after lamination. Therefore, a film having the surface free energy of the film within the range of the present invention is prepared in advance, and this film is laminated on a metal plate to obtain the laminated metal plate of the present invention.
【００１５】前記フィルムは、ポリプロピレンフィルム
あるいはポリプロピレンを主成分とするプロピレン・エ
チレン系ランダム共重合体フィルムであることが望まし
い。これらのフィルムを用いることで、表面自由エネル
ギーを本発明範囲内に調整することが容易となるととも
に、フィルム機械特性に関しても適度な破断伸び・破断
強度を有することから優れた成形性を確保できる。The film is preferably a polypropylene film or a propylene / ethylene random copolymer film containing polypropylene as a main component. By using these films, it is easy to adjust the surface free energy within the range of the present invention, and it is possible to secure excellent moldability since the film has an appropriate breaking elongation and breaking strength in mechanical properties.
【００１６】通常、これらのフィルムは、表面自由エネ
ルギーを高めるために、コロナ放電等の表面活性化処理
が施されているため、この状態では表面自由エネルギー
γSが本発明で規定する範囲外となる恐れがある。表面
自由エネルギーγS を本発明範囲内にするには、フィル
ムの少なくとも一方の面に対するコロナ放電等の表面活
性化処理を省略し、処理を省略した面が容器成形後に容
器内面側の内容物と接する側（図１（Ａ）の外面側）
になるようにラミネートする必要がある。なお、コロナ
放電等の表面活性化処理の省略は、フィルムの製造上な
んら問題なく行える変更であるだけでなく、製造コスト
の削減にもつながるので、却って好都合である。Usually, these films are subjected to a surface activation treatment such as corona discharge in order to increase the surface free energy. In this state, the surface free energy γ S is out of the range specified in the present invention. There is a risk of becoming. To the surface free energy gamma S within the scope of the present invention includes at least one of the omitted surface activation treatment such as corona discharge to the surface, the omitted surface processing is the inner surface of the container side after container forming content of the film Contact side (outer side of Fig. 1 (A))
It is necessary to laminate so that The omission of the surface activation treatment such as corona discharge is not only a change that can be performed without any problem in the production of the film, but also leads to a reduction in the production cost.
【００１７】前記フィルムの金属板と密着する側の面の
表面自由エネルギーγS は特に限定されないが、密着性
を向上する観点からは、金属板の表面エネルギーγS よ
り小さいことがより望ましい。The surface free energy γ S of the surface of the film that is in close contact with the metal plate is not particularly limited, but is preferably smaller than the surface energy γ S of the metal plate from the viewpoint of improving the adhesion.
【００１８】また、前記フィルムは、金属板と密着する
側の面（図１（Ａ）の密着面側）に、極性基を含む樹
脂の密着層を有することが望ましい。極性基を含む樹脂
として、具体的には、無水マレイン酸変性樹脂等を用い
ることができ、これにより、高い加工密着性が要求され
る飲料缶等の用途への適用が可能となる。Further, it is desirable that the film has an adhesive layer of a resin containing a polar group on the surface on the side that is in close contact with the metal plate (the contact surface side in FIG. 1A). As the resin containing a polar group, specifically, a maleic anhydride-modified resin or the like can be used, and thereby, it can be applied to uses such as a beverage can requiring high processing adhesion.
【００１９】また、容器成形後に容器外面側になるフィ
ルムの外面側の表面自由エネルギーγS は２５dyn/cm以
上であることが望ましい。通常、容器外面には商品名・
商標等の印刷が施されるため、インクに対する濡れ性が
高い、すなわち表面自由エネルギーが高いフィルムがラ
ミネートされていることが望まれるためである。表面自
由エネルギーγS を２５dyn/cm以上（第３発明）とする
ことで、十分な印刷性を付与することが可能となる。具
体的には、前記樹脂フィルムとしてはポリエステル系の
フィルムが望ましく、ＰＥＴフィルム等が成形性にも優
れるため好適である。The surface free energy γ S on the outer surface of the film on the outer surface of the container after the container is formed is desirably 25 dyn / cm or more. Usually, the product name /
This is because it is desired that a film having a high wettability to ink, that is, a film having a high surface free energy is laminated in order to print a trademark or the like. By setting the surface free energy γ S to 25 dyn / cm or more (third invention), it becomes possible to impart sufficient printability. Specifically, a polyester-based film is desirable as the resin film, and a PET film or the like is preferable because of excellent moldability.
【００２０】容器成形後に容器内面側、外面側になる樹
脂フィルムの膜厚は特に限定されない。汎用的に使用さ
れている膜厚、例えば１０〜５０μｍ程度の膜厚のもの
を使用できる。The thickness of the resin film on the inner surface side and outer surface side of the container after the container is formed is not particularly limited. A generally used film thickness, for example, a film thickness of about 10 to 50 μm can be used.
【００２１】図１（Ｂ）は、本発明のラミネート金属板
の、容器成形後に容器外面側になる部分の断面図であ
る。第３発明において表面自由エネルギーを規定した面
は印刷が施される外面側となるようにラミネートされ
る。FIG. 1B is a cross-sectional view of a portion of the laminated metal plate of the present invention which is on the outer surface side of the container after the container is formed. In the third invention, the surface on which the surface free energy is specified is laminated so as to be on the outer surface side on which printing is performed.
【００２２】前記フィルムの金属板との密着側の面（図
１（Ｂ）の密着面側）の表面自由エネルギーは、金属
板との密着性を良好にするためには２５dyn/cm以上であ
ることが望ましい。The surface free energy of the surface of the film that is in close contact with the metal plate (the close contact surface in FIG. 1B) is at least 25 dyn / cm in order to improve the adhesion with the metal plate. It is desirable.
【００２３】また、金属板と前記フィルムとの十分な密
着性を確保するためには、ラミネート前の金属板の表面
自由エネルギーは金属板との密着面側のフィルムの表面
自由エネルギーより大きいことが望ましい。金属板とし
ては、缶用材料として広く使用されているアルミニウム
板や軟鋼板等を用いることができ、特に下層が金属クロ
ム、上層がクロム水酸化物からなる二層皮膜を形成させ
た表面処理鋼板（所謂ＴＦＳ）等が最適である。In order to ensure sufficient adhesion between the metal plate and the film, it is necessary that the surface free energy of the metal plate before lamination is larger than the surface free energy of the film on the side of the adhesion surface with the metal plate. desirable. As the metal plate, an aluminum plate or a mild steel plate, which is widely used as a material for cans, can be used. Particularly, a surface-treated steel plate having a double-layered film made of metal chromium in the lower layer and chromium hydroxide in the upper layer. (So-called TFS) is optimal.
【００２４】ＴＦＳの金属クロム層、クロム水酸化物層
の付着量についても、特に限定されないが、加工後密着
性・耐食性の観点から、何れもＣｒ換算で、金属クロム
層は７０〜２００ｍｇ／ｍ2 、クロム水酸化物層は１０
〜３０ｍｇ／ｍ2 の範囲とすることが望ましい。The adhesion amount of the metal chromium layer and the chromium hydroxide layer of TFS is not particularly limited, either, but from the viewpoint of adhesion and corrosion resistance after processing, the metal chromium layer is 70 to 200 mg / m 2 in terms of Cr. 2 、 Chromium hydroxide layer is 10
It is desirable to be in the range of ３０30 mg / m 2 .
【００２５】金属板表面に前記したフィルムをラミネー
トする方法としては、熱融着法が一般的であるが、これ
に限定されるものではない。As a method of laminating the above-mentioned film on the surface of the metal plate, a heat fusion method is generally used, but it is not limited to this.
【００２６】[0026]
【実施例】以下、本発明の実施例について説明する。Embodiments of the present invention will be described below.
【００２７】厚さ０．１８ｍｍ・幅９７７ｍｍの冷間圧
延、焼鈍、調質圧延を施した鋼板を、脱脂、酸洗後、ク
ロムめっきを行い、クロムめっき鋼板を製造した。クロ
ムめっきは、ＣｒＯ3 、Ｆ- 、ＳＯ4 2-を含むクロムめ
っき浴でクロムめっき、中間リンス後、ＣｒＯ3 、Ｆ-
を含む化成処理液で電解した。その際、電解条件（電流
密度・電気量等）を調整して金属クロム付着量とクロム
水酸化物付着量及び表面自由エネルギーを調整した。A cold-rolled, annealed, and temper-rolled steel sheet having a thickness of 0.18 mm and a width of 977 mm was subjected to degreasing, pickling, and chromium plating to produce a chromium-plated steel sheet. Chromium plating is performed by chromium plating in a chromium plating bath containing CrO 3 , F − , and SO 4 2−, and after intermediate rinsing, CrO 3 , F −
Was electrolyzed with a chemical conversion solution containing. At this time, the electrolysis conditions (current density, amount of electricity, etc.) were adjusted to adjust the metal chromium adhesion amount, chromium hydroxide adhesion amount, and surface free energy.
【００２８】表面自由エネルギーは、表面自由エネルギ
ーが既知の液体（純水、グリセロール、ホルムアミド、
エチエングリコール、ジメチルグリコロール）を測定物
（クロムめっき鋼板）の表面に滴下し、接触角を測定し
て求めた（湿度：５５〜６５％、温度２０℃）。The surface free energy is a liquid having a known surface free energy (pure water, glycerol, formamide,
(Ethylene glycol, dimethylglycolol) was dropped on the surface of the object to be measured (chromium-plated steel sheet), and the contact angle was measured and determined (humidity: 55 to 65%, temperature: 20 ° C).
【００２９】次いで、図２に示す金属帯のラミネート装
置を用い、前記で得たクロムめっき鋼板１を金属帯加熱
装置２で加熱し、ラミネートロール３で前記クロムめっ
き鋼帯１の一方の面に、容器成形後に容器内面側になる
樹脂フィルムとして、表１に示す各種フィルム４ａ、他
方の面に、容器成形後に容器外面側となる樹脂フィルム
として、表面自由エネルギーがすべて３２dyn/cmのＰＥ
Ｔフィルム４ｂを、それぞれラミネート（熱融着）して
ラミネート金属帯を製造した。Next, using the metal strip laminating apparatus shown in FIG. 2, the chromium-plated steel sheet 1 obtained above is heated by the metal strip heating apparatus 2, and is laminated on one side of the chrome-plated steel strip 1 by the laminating roll 3. The various films 4a shown in Table 1 as the resin film on the inner surface side of the container after the molding of the container, and the other surface, as the resin film on the outer surface side of the container after the molding of the container, are all PE having a surface free energy of 32 dyn / cm.
Each of the T films 4b was laminated (thermally fused) to produce a laminated metal band.
【００３０】以上の方法で製造したラミネート金属板に
対し、上記と同様にして表面自由エネルギーを測定する
とともに、以下の方法で、内容物取り出し性、成形
性、加工後密着性を評価した。The surface free energy of the laminated metal plate manufactured by the above method was measured in the same manner as described above, and the content removal property, moldability, and post-processing adhesion were evaluated by the following methods.
【００３１】内容物取り出し性 絞り成形機を用いて、ラミネート金属板を、絞り工程
で、ブランク径：１００mm、絞り比（成形前径／成形後
径）：１．８８でカップ成形した。続いて、このカップ
内に、卵・肉・オートミールを均一混合させた内容物を
充填し、蓋を巻締め後、レトルト処理（１３０℃×９０
分間）を行った。その後、蓋を取り外し、カップを逆さ
まにして２、３回手で振って内容物を取り出した後にカ
ップ内側に残存する内容物の程度を観察することによ
り、内容物の取り出し易さの程度を評価した。Contents take-out property The laminated metal plate was cup-formed with a blank diameter: 100 mm and a draw ratio (diameter before molding / diameter after molding) of 1.88 using a drawing machine in a drawing step. Subsequently, the contents in which the egg, meat, and oatmeal were uniformly mixed were filled into the cup, and the lid was tightly wound, followed by retort treatment (130 ° C. × 90).
Min). Then, remove the lid, turn the cup upside down, shake it by hand two or three times to take out the contents, and observe the degree of contents remaining inside the cup to evaluate the degree of ease of taking out the contents. did.
【００３２】（評点について） ○：内容物の取り出しが容易であり、取り出し後のカッ
プ内面に付着物が無い状態 ×：手で振るだけでは内容物の取り出しが困難であり、
スプーン等で掻き出さないと内容物が取り出せない状態(Regarding the score) ：: The contents are easily taken out, and there is no deposit on the inner surface of the cup after taking out. ×: It is difficult to take out the contents only by shaking by hand.
Contents cannot be taken out unless scraped with a spoon
【００３３】成形性 ラミネート金属板にワックス塗布後、直径１７９ｍｍの
円板を打ち抜き、絞り比１．６５で浅絞り缶を得た。次
いで、この絞りカップに対し、絞り比１．４０で再絞り
加工を行った。このようにして得た深絞り缶のフィルム
の損傷程度を目視観察した。Moldability After wax was applied to the laminated metal plate, a disk having a diameter of 179 mm was punched out to obtain a shallow drawn can with a drawing ratio of 1.65. Next, the drawing cup was redrawn at a drawing ratio of 1.40. The degree of damage to the film of the deep drawn can thus obtained was visually observed.
【００３４】（評点について） ◎：成形後フィルムに損傷なく、白化も認められない ○：成形可能であるが、フィルム白化が認められる ×：缶が破胴し、成形不可能(Score) ：: No damage to the film after molding and no whitening is observed.
【００３５】加工後密着性 上記で得た缶に対し、缶胴部よりピール試験用のサン
プル（幅１５ｍｍ×長さ１２０ｍｍ）を切り出した。切
り出したサンプルの長辺側端部からフィルムを一部剥離
し、引張試験機で剥離した部分のフィルムを、フィルム
が剥離されたクロムめっき鋼板とは反対方向（角度：１
８０°）に開き、引張速度３０ｍｍ／ｍｉｎでピール試
験を行い、密着力を評価した。なお、密着力測定対象面
は、缶内面側とした。Adhesion after processing From the can obtained above, a sample (15 mm wide × 120 mm long) for a peel test was cut out from the body of the can. A part of the film was peeled off from the long side end of the cut sample, and the part of the film peeled off by the tensile tester was placed in the opposite direction to the chromium-plated steel sheet from which the film was peeled (angle: 1).
80 °) and a peel test was performed at a tensile speed of 30 mm / min to evaluate the adhesion. The surface to be measured for adhesion was the inner surface of the can.
【００３６】（評点について） ◎：０．１５ｋｇ／１５ｍｍ以上 ○：０．１０ｋｇ／１５ｍｍ以上、０．１５ｋｇ／１５
ｍｍ未満 ×：０．１０ｋｇ／１５ｍｍ未満に つ い て: 0.15 kg / 15 mm or more ：: 0.10 kg / 15 mm or more, 0.15 kg / 15
Less than mm ×: less than 0.10 kg / 15 mm
【００３７】[0037]
【表１】 [Table 1]
【００３８】表１に示すように、本発明範囲の発明例
は、いずれも良好な特性を示した。これに対し、本発明
の範囲を外れる比較例は、内容物取り出し性が不良であ
った。As shown in Table 1, all the examples of the present invention exhibited good characteristics. On the other hand, the comparative examples out of the range of the present invention were inferior in taking out the contents.
【００３９】[0039]
【発明の効果】本発明によるラミネート金属板は、内容
物取り出し性、成形性が良好であり、絞り加工等を行う
容器用素材、特に食缶容器用素材として好適である。Industrial Applicability The laminated metal sheet according to the present invention has a good content take-out property and a good moldability, and is suitable as a material for containers for drawing and the like, particularly as a material for food can containers.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明のラミネート金属板の断面を示す図で、
（Ａ）は容器成形後に容器内面側になる部分の断面、
（Ｂ）は容器成形後に容器外面側になる部分の断面。FIG. 1 is a view showing a cross section of a laminated metal plate of the present invention,
(A) is a cross section of a part which becomes the container inner surface side after the container is formed,
(B) is a cross section of a part which becomes the container outer surface side after the container is formed.
【図２】金属板のラミネート装置の要部を示す図。FIG. 2 is a diagram showing a main part of a metal plate laminating apparatus.
１ 金属板（クロムめっき鋼板） ２ 金属帯加熱装置 ３ ラミネートロール ４ａ，４ｂ フィルム DESCRIPTION OF SYMBOLS 1 Metal plate (chrome-plated steel plate) 2 Metal band heating device 3 Laminating roll 4a, 4b Film
───────────────────────────────────────────────────── フロントページの続き (72)発明者 久保 啓 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 渡辺 真介 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 Ｆターム(参考） 3E061 AA15 AB13 BA01 4F100 AB01C AB03 AB13 AK01A AK01B AK01D AK01E AK07A AK07B AK42 AK64A AK64B BA03 BA05 BA06 BA10A BA10B BA13 EH71 GB16 JA06E JA20A JA20B JA20C JK06D JL00 JL01 YY00A YY00B ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Kubo 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Shinsuke Watanabe 1-2-1-2 Marunouchi, Chiyoda-ku, Tokyo Sun F-term (reference) in this steel pipe Co., Ltd.
Claims (4)
る容器用金属板であって、容器成形後に容器内面側にな
る樹脂フィルムの内容物と接する側の面の表面自由エネ
ルギーγS が、１０dyn/cm以上３０dyn/cm未満であるこ
とを特徴とする内容物取り出し性に優れた容器用フィル
ムラミネート金属板。1. A container metal plate having a resin film laminate layer on both surfaces, wherein the surface free energy γ S of the surface in contact with the contents of the resin film, which becomes the container inner surface after the container is formed, is 10 dyn / cm. A film-laminated metal plate for a container having an excellent content-removing property, which is less than 30 dyn / cm.
ムまたはポリプロピレンを主成分とするプロピレン・エ
チレン系ランダム共重合体フィルムであり、あるいはさ
らに該樹脂フィルムが、金属板に密着する側に極性基を
含む樹脂の密着層を有することを特徴とする請求項１に
記載の内容物取り出し性及び成形性に優れた容器用フィ
ルムラミネート金属板。2. The method according to claim 1, wherein the resin film is a polypropylene film or a propylene / ethylene random copolymer film containing polypropylene as a main component. The film-laminated metal plate for a container according to claim 1, which has an adhesion layer and has excellent content takeout properties and moldability.
ルムの外面側の表面自由エネルギーγS が、２５dyn/cm
以上であることを特徴とする請求項１または２に記載の
内容物取り出し性及び成形性に優れた容器用フィルムラ
ミネート金属板。3. The surface free energy γ S on the outer surface side of the resin film on the outer surface side of the container after the container is formed is 25 dyn / cm.
The film-laminated metal plate for a container according to claim 1 or 2, which is excellent in content takeout property and moldability.
ギーγS が、樹脂フィルムの金属板に密着する側の面の
表面自由エネルギーより大きいことを特徴とする請求項
１乃至３のいずれかに記載の内容物取り出し性及び成形
性に優れた容器用フィルムラミネート金属板。4. The method according to claim 1, wherein the surface free energy γ S of the metal plate before lamination is larger than the surface free energy of the surface of the resin film on the side close to the metal plate. A film-laminated metal plate for a container which is excellent in the content takeout property and moldability of the above.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26898999A JP3491574B2 (en) | 1999-09-22 | 1999-09-22 | Film laminated metal plate for containers |
| US09/665,323 US6723441B1 (en) | 1999-09-22 | 2000-09-19 | Resin film laminated metal sheet for can and method for fabricating the same |
| DE60045226T DE60045226D1 (en) | 1999-09-22 | 2000-09-21 | Resin-foil laminated sheet for a can and manufacturing method therefor |
| DE2000636992 DE60036992T3 (en) | 1999-09-22 | 2000-09-21 | Plastic film laminated metal foil for cans and manufacturing processes |
| EP20000120151 EP1086808B2 (en) | 1999-09-22 | 2000-09-21 | Resin film laminated metal sheet for can and method for fabricating the same |
| EP20070021544 EP1886803B2 (en) | 1999-09-22 | 2000-09-21 | Resin film laminated metal sheet for can and method for fabricating the same |
| US10/719,797 US20040101698A1 (en) | 1999-09-22 | 2003-11-20 | Resin film laminated metal sheet for can and method for fabricating the same |
| US11/439,469 US20060210817A1 (en) | 1999-09-22 | 2006-05-23 | Resin film laminated metal sheet for can and method for fabricating the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26898999A JP3491574B2 (en) | 1999-09-22 | 1999-09-22 | Film laminated metal plate for containers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001088241A true JP2001088241A (en) | 2001-04-03 |
| JP3491574B2 JP3491574B2 (en) | 2004-01-26 |
Family
ID=17466123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26898999A Expired - Fee Related JP3491574B2 (en) | 1999-09-22 | 1999-09-22 | Film laminated metal plate for containers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3491574B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007030404A (en) * | 2005-07-28 | 2007-02-08 | Jfe Steel Kk | Resin coated metal sheet for container |
| JP2007030403A (en) * | 2005-07-28 | 2007-02-08 | Jfe Steel Kk | Resin coated metal sheet for container |
| JP2007055687A (en) * | 2005-07-28 | 2007-03-08 | Jfe Steel Kk | Resin coated metal plate for container, and resin coated metal can |
| JP2008087327A (en) * | 2006-10-02 | 2008-04-17 | Jfe Steel Kk | Resin coated metal sheet for container |
| WO2019116707A1 (en) * | 2017-12-15 | 2019-06-20 | Ｊｆｅスチール株式会社 | Resin coated metal plate for containers |
-
1999
- 1999-09-22 JP JP26898999A patent/JP3491574B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007030404A (en) * | 2005-07-28 | 2007-02-08 | Jfe Steel Kk | Resin coated metal sheet for container |
| JP2007030403A (en) * | 2005-07-28 | 2007-02-08 | Jfe Steel Kk | Resin coated metal sheet for container |
| JP2007055687A (en) * | 2005-07-28 | 2007-03-08 | Jfe Steel Kk | Resin coated metal plate for container, and resin coated metal can |
| JP4735105B2 (en) * | 2005-07-28 | 2011-07-27 | Ｊｆｅスチール株式会社 | Resin-coated metal plate for containers |
| JP2008087327A (en) * | 2006-10-02 | 2008-04-17 | Jfe Steel Kk | Resin coated metal sheet for container |
| WO2019116707A1 (en) * | 2017-12-15 | 2019-06-20 | Ｊｆｅスチール株式会社 | Resin coated metal plate for containers |
| JPWO2019116707A1 (en) * | 2017-12-15 | 2019-12-19 | Ｊｆｅスチール株式会社 | Resin-coated metal plate for containers |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3491574B2 (en) | 2004-01-26 |
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