JPH09216313A - Resin composite metal plate for metal vessel - Google Patents
Resin composite metal plate for metal vesselInfo
- Publication number
- JPH09216313A JPH09216313A JP8028314A JP2831496A JPH09216313A JP H09216313 A JPH09216313 A JP H09216313A JP 8028314 A JP8028314 A JP 8028314A JP 2831496 A JP2831496 A JP 2831496A JP H09216313 A JPH09216313 A JP H09216313A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- metal plate
- metal
- coating
- thermoplastic
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、容器材料として使
用される樹脂被覆金属板に関するものであり、より詳細
には、被覆樹脂の構造を下層が非晶性ポリエステル樹
脂、上層がポリエチレンナフタレート樹脂の二層とする
ことによって、特に缶外面側として使用される際の加工
時の耐疵付き性と密着性、並びに加工後の耐錆性とを有
する金属容器用樹脂複合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 resin-coated metal plate used as a container material. More specifically, the structure of the coating resin is such that the lower layer is an amorphous polyester resin and the upper layer is a polyethylene naphthalate resin. The present invention relates to a resin composite metal plate for a metal container having scratch resistance and adhesion at the time of processing, and rust resistance after processing, particularly when used as the outer surface side of a can. .
【０００２】[0002]
【従来の技術】従来、容器用材料として使用される樹脂
被覆金属板は、特開昭５２−６５５７９号公報に示され
るように、缶容器の内面耐食性を向上させる目的で使用
されているものが大部分であるが、最近では、特開平３
−１０１９３０号公報に示される両面ポリエステルラミ
ネート鋼板や、特公平５−３４０６３号公報に示される
二軸延伸ポリエチレンテレフタレートフィルムを設けて
エアゾール缶の外面に使用するものが提案されている。2. Description of the Related Art Conventionally, a resin-coated metal plate used as a material for a container has been used for the purpose of improving the corrosion resistance of the inner surface of a can container, as disclosed in JP-A-52-65579. Most of the time, but recently, JP-A-3
A double-sided polyester laminated steel sheet disclosed in JP-A-101930 and a biaxially stretched polyethylene terephthalate film disclosed in JP-B-5-34063 have been proposed for use on the outer surface of an aerosol can.
【０００３】このように缶外面側に樹脂被覆鋼板を使用
する部位、例えば缶蓋や缶底は、一般に巻き締め加工が
施される際に、直接巻き締めロールと接触するため、耐
疵付き性に優れた樹脂が必要となり、二軸延伸ポリエチ
レンテレフタレートフィルムが多用されているのが現状
である。As described above, the portion where the resin-coated steel plate is used on the outer surface of the can, for example, the can lid and the can bottom, is generally in direct contact with the winding roll when the winding process is performed. In the present situation, a biaxially stretched polyethylene terephthalate film is frequently used because a resin excellent in the above is required.
【０００４】[0004]
【発明が解決しようとする課題】一般に、二軸延伸ポリ
エチレンテレフタレートフィルムは金属板との密着性が
劣り、金属板を被覆しようとする際には、金属板との間
に接着層を設けるか、或いは金属板をポリエチレンテレ
フタレートフィルムの融点近くまで加熱して金属板と接
触している部分の極薄い樹脂層を融解させて密着性を確
保しているのが現状である。また、他の樹脂被覆方法と
して、Ｔダイによる押し出し溶融ラミネート法がある
が、この方法では溶融樹脂を金属板に直接凝固させるた
め、樹脂の構造がアモルファス状態となり、金属板との
密着性は十分に確保できるが、二軸延伸構造よりも硬度
と滑り性が劣るため、加工条件の厳しい場合に疵付きが
問題となることがあった。Generally, a biaxially stretched polyethylene terephthalate film has poor adhesion to a metal plate, and when an attempt is made to cover the metal plate, an adhesive layer should be provided between the film and the metal plate. Alternatively, under the present circumstances, the metal plate is heated up to near the melting point of the polyethylene terephthalate film to melt the extremely thin resin layer in the portion in contact with the metal plate to secure the adhesion. Further, as another resin coating method, there is an extrusion melting laminating method using a T-die. In this method, the molten resin is directly solidified on the metal plate, so that the resin structure is in an amorphous state and the adhesiveness with the metal plate is sufficient. However, since the hardness and slipperiness are inferior to those of the biaxially stretched structure, flaws may become a problem when the processing conditions are severe.
【０００５】本発明は、このようなアモルファス構造の
ポリエチレンテレフタレート樹脂が被覆された金属板に
おいて、缶外面の加工に耐える樹脂として、上層ポリエ
チレンナフタレート樹脂、下層非晶性ポリエステル樹脂
の二層構造とすることによって、耐疵付き性に優れ、か
つ密着性、耐錆性ともに良好な金属容器用樹脂複合金属
板を提供することを目的とするものである。According to the present invention, in a metal plate coated with such a polyethylene terephthalate resin having an amorphous structure, a resin having a two-layer structure of an upper layer polyethylene naphthalate resin and a lower layer amorphous polyester resin is used as a resin that can withstand processing of the outer surface of a can. By doing so, it is an object of the present invention to provide a resin composite metal plate for a metal container, which is excellent in scratch resistance, adhesiveness and rust resistance.
【０００６】[0006]
【課題を解決するための手段】すなわち、本発明の要旨
とするところは下記のとおりである。 （１）金属板表面の片面にＳｎ、Ｃｒ、Ｎｉ等の金属め
っき或いはクロム水和酸化物系の化成処理皮膜を施した
後、さらにその上に熱可塑性の非晶性ポリエステル樹脂
組成物を下層とし、熱可塑性のポリエチレンナフタレー
ト樹脂を上層とする二層に被覆したことを特徴とする金
属容器用片面樹脂複合金属板。That is, the gist of the present invention is as follows. (1) After a metal plating of Sn, Cr, Ni or the like or a chemical conversion treatment film of chromium hydrate oxide is applied to one surface of the metal plate, a thermoplastic amorphous polyester resin composition is further formed as a lower layer A single-sided resin composite metal plate for a metal container, characterized by being coated with two layers of thermoplastic polyethylene naphthalate resin as an upper layer.
【０００７】（２）金属板表面の両面にＳｎ、Ｃｒ、Ｎ
ｉ等の金属めっき或いはクロム水和酸化物系の化成処理
皮膜を施した後、さらに一方の面の上に熱可塑性の非晶
性ポリエステル樹脂組成物を下層とし、熱可塑性のポリ
エチレンナフタレート樹脂を上層とする二層に被覆した
ことを特徴とする金属容器用片面樹脂複合金属板。 （３）金属板表面の片面側をＳｎ、Ｃｒ、Ｎｉ等の金属
めっき、もう一方の面をクロム水和酸化物系の化成処理
皮膜の表裏異種皮膜を施した後、上記金属めっきの上に
熱可塑性の非晶性ポリエステル樹脂組成物を下層とし、
熱可塑性のポリエチレンナフタレート樹脂を上層とする
二層に被覆したことを特徴とする金属容器用片面樹脂複
合金属板。(2) Sn, Cr, N on both surfaces of the metal plate
After applying a metal plating such as i or a chromium hydrate oxide conversion coating, a thermoplastic amorphous polyester resin composition is formed as a lower layer on one side of the thermoplastic polyethylene naphthalate resin. A single-sided resin composite metal plate for a metal container, which is coated with two layers as an upper layer. (3) After plating one surface of the metal plate with a metal such as Sn, Cr, Ni, etc., and coating the other surface with different kinds of chromium hydrate oxide-based chemical conversion coatings on the front and back, the above metal plating is applied. As a lower layer of a thermoplastic amorphous polyester resin composition,
A single-sided resin composite metal plate for a metal container, characterized by being coated with two layers of thermoplastic polyethylene naphthalate resin as an upper layer.
【０００８】（４）前項（１）、（２）および（３）の
樹脂複合金属板において、非晶性ポリエステル樹脂／ポ
リエチレンナフタレート樹脂二層被覆側を缶外面とし、
さらにもう片面側の裸の金属板またはＳｎ、Ｃｒ、Ｎｉ
等の金属めっき或いはクロム水和酸化物系の化成処理皮
膜の上に熱硬化性樹脂組成物を被覆して、缶内面として
使用する金属容器用両面樹脂複合金属板。(4) In the resin composite metal plate of the above-mentioned (1), (2) and (3), the amorphous polyester resin / polyethylene naphthalate resin double layer coating side is the outer surface of the can,
Bare metal plate or Sn, Cr, Ni on the other side
A double-sided resin composite metal plate for a metal container, which is used as an inner surface of a can by coating a thermosetting resin composition on a metal plating film such as chrome hydrate oxide chemical conversion treatment film and used as an inner surface of a can.
【０００９】（５）前項（１）、（２）および（３）の
樹脂複合金属板において、非晶性ポリエステル樹脂／ポ
リエチレンナフタレート樹脂二層被覆側を缶外面とし、
さらにもう片面側の裸の金属板またはＳｎ、Ｃｒ、Ｎｉ
等の金属めっき或いはクロム水和酸化物系の化成処理皮
膜の上に熱可塑性樹脂組成物を被覆して、缶内面として
使用する金属容器用両面樹脂複合金属板。(5) In the resin composite metal plate of the above (1), (2) and (3), the amorphous polyester resin / polyethylene naphthalate resin double layer coating side is the outer surface of the can,
Bare metal plate or Sn, Cr, Ni on the other side
A double-sided resin composite metal plate for a metal container, which is used as an inner surface of a can by coating a thermoplastic resin composition on a metal plating such as chrome hydrate oxide chemical conversion coating and using it as an inner surface of a can.
【００１０】（６）前項（１）、（２）および（３）の
樹脂複合金属板において、非晶性ポリエステル樹脂／ポ
リエチレンナフタレート樹脂二層被覆側を缶外面とし、
さらにもう片面側の裸の金属板またはＳｎ、Ｃｒ、Ｎｉ
等の金属めっき或いはクロム水和酸化物系の化成処理皮
膜の上に、まず熱硬化性樹脂組成物を被覆し、さらに熱
可塑性樹脂組成物を二層に被覆して、缶内面として使用
する金属容器用両面樹脂複合金属板。(6) In the resin composite metal plate according to the above (1), (2) and (3), the amorphous polyester resin / polyethylene naphthalate resin two-layer coated side is the outer surface of the can,
Bare metal plate or Sn, Cr, Ni on the other side
A metal to be used as an inner surface of a can by first coating a thermosetting resin composition on a metal plating such as chrome hydrate oxide chemical conversion coating, and then coating a thermoplastic resin composition in two layers. Double sided resin composite metal plate for containers.
【００１１】以下、本発明について詳細に述べる。本発
明は、缶外面として使用されるラミネート樹脂皮膜の構
造について、上層を耐疵付き性と滑り性に優れたポリエ
チレンナフタレート樹脂、下層を密着性と耐錆性に優れ
た非晶性のポリエステル樹脂とすることに特徴がある。
本発明において使用する金属板としては、アルミニウ
ム、鉄およびこれらを主体とする合金等があるが、特に
これらに限定するものではなく、一般に容器用素材とし
て使用される金属材料全てに当てはまるものである。こ
れらの金属板は、その用途に応じて耐食性や密着性を付
与するために、適時Ｓｎ、Ｎｉ、Ｃｒ、Ｚｎ、Ａｌ等の
金属めっきおよびこれらの合金めっき、並びにクロムま
たは燐水和酸化物被覆のような化成処理が施される。こ
れらの被覆方法は、一般の電気めっき、溶融めっき、化
学めっきおよび単なる塗布などが代表的である。また、
これら金属板の厚みは容器の大きさ、用途等によって異
なるが、一般的に０．１０〜１．５ｍｍの範囲のものが
使用される。The present invention will be described in detail below. The present invention relates to the structure of a laminated resin film used as the outer surface of a can, wherein the upper layer is a polyethylene naphthalate resin excellent in scratch resistance and slipperiness, and the lower layer is an amorphous polyester excellent in adhesion and rust resistance. It is characterized by using resin.
Examples of the metal plate used in the present invention include aluminum, iron, and alloys containing these as a main component, but are not particularly limited thereto, and are applicable to all metal materials generally used as a material for a container. . These metal plates are coated with Sn, Ni, Cr, Zn, Al, etc., and their alloys, as well as chromium or phosphorus hydrate oxides, in order to impart corrosion resistance and adhesion according to their applications. A chemical conversion treatment such as Typical examples of these coating methods include general electroplating, hot-dip plating, chemical plating, and simple application. Also,
Although the thickness of these metal plates varies depending on the size of the container, the use, etc., those having a thickness of 0.10 to 1.5 mm are generally used.
【００１２】これら表面処理された金属板の上に樹脂を
被覆する。被覆方法としては、一般的な方法であるフィ
ルムを加熱接着させるフィルムラミネーション法でも無
延伸フィルムを用いれば可能であるが、樹脂をＴダイに
より溶融押し出しを行って直接被覆するエキストゥルー
ジョンラミネート法の方が好ましく、さらには、上層と
下層との密着性という点から、上下二層を同時に押し出
す方法がより好ましい。A resin is coated on the surface-treated metal plate. As a coating method, it is possible to use a non-stretched film even in a film lamination method in which a film is heat-bonded, which is a general method, but in the extrusion lamination method in which a resin is melt-extruded by a T-die and directly coated. From the viewpoint of the adhesion between the upper layer and the lower layer, the method of simultaneously extruding the upper and lower two layers is more preferable.
【００１３】次に樹脂被覆物であるが、本発明は樹脂構
造を上層ポリエチレンナフタレート樹脂、下層非晶性ポ
リエステル樹脂とすることに特徴がある。下層の非晶性
ポリエステル樹脂は密着性に優れ、そのままの状態では
耐食性も良好であるが、耐疵付き性と滑り性が劣り、金
属容器を製造する際の加工によって疵が発生し、耐錆性
が問題となる。一方、ポリエチレンナフタレート樹脂は
耐疵付き性に優れるが、加工後の密着性に問題があっ
た。Next, regarding the resin coating, the present invention is characterized in that the resin structure is an upper layer polyethylene naphthalate resin and a lower layer amorphous polyester resin. The amorphous polyester resin in the lower layer has excellent adhesion and good corrosion resistance as it is, but it is inferior in scratch resistance and slipperiness, and scratches occur due to the processing during the production of metal containers, resulting in rust resistance. Sex matters. On the other hand, the polyethylene naphthalate resin is excellent in scratch resistance, but has a problem in adhesion after processing.
【００１４】本発明では、耐疵付き性に優れるポリエチ
レンナフタレート樹脂を上層に、密着性と耐錆性に優れ
る非晶性ポリエステル樹脂を下層にした二層構造とする
ことによって課題を解決した。これらの樹脂組成物中
に、耐衝撃性を向上させる目的でポリオレフィン等の添
加剤を添加すること、並びに着色剤、滑剤等の各種添加
剤を添加することは、必要に応じて一般的な手法で行わ
れる。The present invention has solved the problem by adopting a two-layer structure in which a polyethylene naphthalate resin excellent in scratch resistance is an upper layer and an amorphous polyester resin excellent in adhesion and rust resistance is a lower layer. In these resin compositions, addition of additives such as polyolefin for the purpose of improving impact resistance, and addition of various additives such as colorants and lubricants may be carried out by a general method. Done in.
【００１５】下層の非晶性ポリエステル樹脂組成物とし
ては、ポリエチレンイソフタレート、シクロヘキサン・
ジメタール３０ｍｏｌ％のポリエチレンテレフタレート
コポリエステル、イソフタール酸２０ｍｏｌ％以上のポ
リエチレンテレフタレート、ポリアリレート、ポリエス
テルポリカーボネート等が挙げられるが、これらに限定
するものではなく、ガラス転移温度が２０℃以上、好ま
しくは４０℃以上の非晶性ポリエステルを言う。また、
これらの非晶性ポリエステル樹脂についても、必要に応
じて、公知の配合剤、例えば酸化防止剤、耐衝撃剤、顔
料、粘度改善剤等を配合することができる。また、非晶
性の定義であるが、一般的な示差熱分析において、結晶
化エネルギーのピークが存在しない樹脂を言う。The lower layer amorphous polyester resin composition includes polyethylene isophthalate, cyclohexane.
Examples include, but are not limited to, polyethylene terephthalate copolyester containing 30 mol% of dimethal, polyethylene terephthalate containing 20 mol% or more of isophthalic acid, polyarylate, polyester polycarbonate, and the like, but are not limited thereto and have a glass transition temperature of 20 ° C. or higher, preferably 40 ° C. or higher. Of amorphous polyester. Also,
These amorphous polyester resins may also be blended with known compounding agents such as antioxidants, impact resistance agents, pigments, and viscosity improvers, if necessary. Further, although it is defined as amorphous, it means a resin having no peak of crystallization energy in a general differential thermal analysis.
【００１６】これら、ポリエチレンナフタレート樹脂と
非晶性ポリエステル樹脂皮膜の全体の厚みとしては、金
属缶の種類、用途によって異なるが、一般的に５〜２０
０ミクロン、特に１０〜５０ミクロンの範囲が好まし
い。この場合の下限は耐食性によって、上限は加工性と
コストの問題によって決定される。また、上層ポリエチ
レンナフタレート樹脂と下層非晶性ポリエステル樹脂と
の比率については、１：１〜１：１０の範囲が好まし
い。The total thickness of the polyethylene naphthalate resin and the amorphous polyester resin coating varies depending on the type of metal can and the application, but is generally 5 to 20.
A range of 0 microns, especially 10 to 50 microns is preferred. In this case, the lower limit is determined by corrosion resistance, and the upper limit is determined by workability and cost issues. Further, the ratio of the upper layer polyethylene naphthalate resin to the lower layer amorphous polyester resin is preferably in the range of 1: 1 to 1:10.
【００１７】また、金属缶の内面側については、缶の内
容物によって要求される耐食性のレベルが異なり、最も
腐食性の少ないものでは、請求項１に示される裸の金属
板や請求項２、３に示されるＳｎ、Ｎｉ、Ｃｒめっきま
たは化成処理を施したままの片面樹脂被覆金属板で特に
問題は見られないが、やや耐食性の必要なものについて
は、請求項４に示されるＳｎ，Ｎｉ，Ｃｒめっき皮膜ま
たは化成処理皮膜の上に熱硬化型の水溶性樹脂を０．５
〜１０ミクロン塗布したもの、さらに耐食性が要求され
るものについては、請求項５に示される熱可塑性樹脂と
してポリエチレン、ポリプロピレン、ポリエステル、ナ
イロン、ポリカーボネート等の樹脂を１０〜２００ミク
ロン程度被覆したものや、請求項６に示されるように、
これらの熱可塑性樹脂の下地に請求項４で示されるよう
な熱硬化性樹脂を被覆して二層構造とした両面樹脂被覆
複合金属板とすることによって、耐食性の良好なものが
得られる。Regarding the inner surface side of the metal can, the required level of corrosion resistance differs depending on the contents of the can. For the one having the least corrosiveness, the bare metal plate shown in claim 1 or claim 2, The Sn, Ni, Cr plating or the chemical conversion treatment on the single-sided resin-coated metal sheet shown in No. 3 does not cause any particular problem, but if the corrosion resistance is required, Sn, Ni, , 0.5% of thermosetting water-soluble resin on Cr plating film or chemical conversion film
For those coated with 10 to 10 μm, and those requiring further corrosion resistance, those coated with a resin such as polyethylene, polypropylene, polyester, nylon, or polycarbonate as the thermoplastic resin shown in claim 5 to about 10 to 200 μm, As shown in claim 6,
By providing a double-sided resin-coated composite metal plate having a two-layer structure by coating a thermosetting resin as described in claim 4 on the underlayer of these thermoplastic resins, one having good corrosion resistance can be obtained.
【００１８】[0018]
【実施例】以下、実施例に基づいて本発明の内容を説明
する。 〔実施例１−１〕通常の方法で冷間圧延および焼鈍され
た低炭素冷延鋼板に、通常の方法で脱脂・酸洗を行った
後、通常のＳｎメッキ（Ｓｎ＝２．８〜１１．２ｇ／ｍ
2 ）を施し、通常のリフロー処理を行ってＳｎ−Ｆｅ合
金層を形成させ、さらにクロメート処理を施したブリキ
材の片面側に、下層として非晶性ポリエステルを２０ミ
クロン、上層としてポリエチレンナフタレート樹脂を１
０ミクロン被覆し、各種評価試験に供した。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the contents of the present invention will be described based on embodiments. [Example 1-1] A low carbon cold-rolled steel sheet cold-rolled and annealed by a usual method was degreased and pickled by a usual method, and then a normal Sn plating (Sn = 2.8 to 11) was performed. 0.2 g / m
2 ) and then a normal reflow treatment is performed to form an Sn-Fe alloy layer, and then chromate treatment is applied to one side of the tin plate, with 20 μm of amorphous polyester as the lower layer and polyethylene naphthalate resin as the upper layer. 1
It was coated with 0 micron and subjected to various evaluation tests.
【００１９】〔実施例１−２〕通常の方法で冷間圧延お
よび焼鈍されたアルミニウム板の一方の面上に、通常の
方法で脱脂およびクロメート処理を施した後、さらにそ
の上に、下層として非晶性ポリエステルを２０ミクロ
ン、上層としてポリエチレンナフタレート樹脂を１０ミ
クロン被覆し、各種評価試験に供した。[Example 1-2] After degreasing and chromating treatment by a conventional method on one surface of an aluminum plate cold-rolled and annealed by a conventional method, a lower layer is further formed thereon. Amorphous polyester was coated with 20 μm, and polyethylene naphthalate resin was coated with 10 μm as an upper layer, and subjected to various evaluation tests.
【００２０】〔実施例２〕実施例１において、下層の非
晶性ポリエステルを３０ミクロン、上層のポリエチレン
ナフタレート樹脂を１０ミクロン被覆し、各種評価試験
に供した。 〔実施例３〕実施例１において、下層の非晶性ポリエス
テルを１０ミクロン、上層のポリエチレンナフタレート
樹脂を１０ミクロン被覆し、各種評価試験に供した。 〔実施例４〕実施例１において、ブリキ材の代わりにＣ
ｒめっきを５０〜２００ｍｇ／ｍ2施したティンフリー
材とし、その片面に、下層として非晶性ポリエステルを
２０ミクロン、上層としてポリエチレンナフタレート樹
脂を１０ミクロン被覆し、各種評価試験に供した。 〔実施例５〕実施例１において、ブリキ材の代わりにＮ
ｉめっきを０．１〜１０ｇ／ｍ2 施した素材とし、その
片面に、下層として非晶性ポリエステルを２０ミクロ
ン、上層としてポリエチレンナフタレート樹脂を１０ミ
クロン被覆し、各種評価試験に供した。 〔実施例６〕実施例１において、ブリキ材のもう片面側
に熱硬化型の水溶性エポキシ樹脂を５ミクロン塗布し、
内面側の評価試験に供した。 〔実施例７〕実施例１において、ブリキ材のもう片面側
に熱可塑性のポリエステル樹脂を３０ミクロン塗布し、
内面側の評価試験に供した。 〔実施例８〕実施例１において、ブリキ材のもう片面側
に熱可塑性のポリプロピレン樹脂を３０ミクロン塗布
し、内面側の評価試験に供した。Example 2 In Example 1, the lower layer of amorphous polyester was coated with 30 μm and the upper layer of polyethylene naphthalate resin was coated with 10 μm, and subjected to various evaluation tests. [Example 3] In Example 1, the lower layer amorphous polyester was coated with 10 µm, and the upper layer polyethylene naphthalate resin was coated with 10 µm, and subjected to various evaluation tests. [Example 4] In Example 1, C was used instead of the tin plate material.
A tin-free material having 50 to 200 mg / m 2 of r-plated was coated on one side with an amorphous polyester of 20 μm as a lower layer and with a polyethylene naphthalate resin of 10 μm as an upper layer, and subjected to various evaluation tests. [Embodiment 5] In Embodiment 1, N is used instead of the tin plate material.
A material subjected to i-plating of 0.1 to 10 g / m 2 was coated on one side thereof with an amorphous polyester of 20 μm as a lower layer and a polyethylene naphthalate resin of 10 μm as an upper layer, and subjected to various evaluation tests. [Example 6] In Example 1, a thermosetting water-soluble epoxy resin was applied to the other side of the tin plate by 5 microns,
It was subjected to an evaluation test on the inner surface side. [Example 7] In Example 1, the other side of the tin plate was coated with 30 μm of a thermoplastic polyester resin,
It was subjected to an evaluation test on the inner surface side. Example 8 In Example 1, 30 μm of a thermoplastic polypropylene resin was applied to the other side of the tin plate material and subjected to an evaluation test on the inner side.
【００２１】〔実施例９〕実施例１において、ブリキ材
のもう片面側に、熱硬化型の水溶性エポキシ樹脂を５ミ
クロン塗布し、さらにその上に熱可塑性のポリプロピレ
ン樹脂を３０ミクロン塗布し、内面側の評価試験に供し
た。 〔比較例１〕実施例１において、樹脂被覆層を下層の非
晶性ポリエステル樹脂のみの単層としたもの。その他の
項目は実施例１と同じである。Example 9 In Example 1, a thermosetting water-soluble epoxy resin was applied on the other side of the tin plate in an amount of 5 μm, and a thermoplastic polypropylene resin was applied thereon in an amount of 30 μm. It was subjected to an evaluation test on the inner surface side. [Comparative Example 1] In Example 1, the resin coating layer was a single layer of the lower amorphous polyester resin. Other items are the same as those in the first embodiment.
【００２２】〔比較例２〕実施例１において、樹脂被覆
層を上層のポリエチレンナフタレート樹脂のみの単層と
したもの。その他の条件は全て実施例１と同じである。
以上の本発明実施例および比較例を以下に示す（ａ）〜
（ｃ）の評価テストに供し、特性を比較した。[Comparative Example 2] A resin coating layer in Example 1 which is a single layer of an upper polyethylene naphthalate resin. All other conditions are the same as in Example 1.
The above-mentioned inventive examples and comparative examples are shown below (a)-
The evaluation test of (c) was performed to compare the characteristics.
【００２３】（ａ）巻き締め時の疵付き評価 巻き締め時の樹脂の疵付き評価は、樹脂側が缶の外面と
なるようにφ２１１サイズの缶蓋を作製し、通常の二重
巻き締めを実施し、巻き締め後の樹脂の表面外観を拡大
鏡で観察し、疵のないものを○、極表面のみ浅い疵のあ
るものを△、地金属板まで疵が達する深い疵を×とし
た。(A) Evaluation of flaws during winding The scratches of the resin during winding are evaluated by making a φ211 size can lid so that the resin side is the outer surface of the can, and performing normal double winding. Then, the surface appearance of the resin after tightening was observed with a magnifying glass. When there were no flaws, the mark was ◯, when only the extreme surface had shallow marks, the mark was Δ, and when the flaw reached the base metal plate was marked with x.
【００２４】（ｂ）巻き締め後の耐錆性評価 巻き締め後の耐錆性評価は、水道水に１カ月浸漬後、表
面の錆発生と変色で評価した。また、同時に６０℃×９
０％ＲＨの条件で１カ月経時させ、表面の錆発生を評価
した。評価は、錆発生のないものを○、錆発生したもの
を×とした。 （ｃ）内面側の耐食性評価 缶内面となる面が凸となるようにエリクセン押し出し加
工４ｍｍを行い、水溶性内容物中に１カ月浸漬経時さ
せ、錆発生を評価した。評価は、錆発生の全くないもの
を◎、変色したものを○、微小錆発生を△、完全に錆発
生したものを×とした。(B) Evaluation of rust resistance after winding The rust resistance after winding was evaluated by rust generation and discoloration on the surface after soaking in tap water for 1 month. At the same time, 60 ℃ × 9
It was aged for 1 month under the condition of 0% RH, and the generation of rust on the surface was evaluated. In the evaluation, those without rust were rated as ◯, and those with rust were rated as x. (C) Corrosion resistance evaluation on inner surface side Erichsen extrusion processing 4 mm was performed so that the surface which becomes the inner surface of the can became convex, and it was immersed in the water-soluble content for 1 month for aging to evaluate the occurrence of rust. In the evaluation, ⊚ indicates that no rust was generated, ∘ indicates discoloration, Δ indicates minute rust formation, and x indicates completely rust formation.
【００２５】以上、テスト結果を表１にまとめて示し
た。The test results are summarized in Table 1 above.
【００２６】[0026]
【表１】 [Table 1]
【００２７】[0027]
【発明の効果】以上述べたように、本発明は、容器材料
として、特に缶外面側として使用される際の加工時の耐
疵付き性と密着性、並びに加工後の耐錆性に対して、上
層ポリエチレンナフタレート樹脂、下層非晶性ポリエス
テル樹脂の二層構造を有する樹脂を被覆することによっ
て解決したものであり、容器材料の耐食性改善によって
容器の寿命延長に大きく貢献するものである。INDUSTRIAL APPLICABILITY As described above, the present invention is applied to the container material, especially to the outer surface side of the can, for the scratch resistance and adhesion at the time of processing, and the rust resistance after processing. This is solved by coating a resin having a two-layer structure of an upper layer polyethylene naphthalate resin and a lower layer amorphous polyester resin, which contributes greatly to extending the life of the container by improving the corrosion resistance of the container material.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大野 隆久 姫路市広畑区富士町１番地 新日本製鐵株 式会社広畑製鐵所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takahisa Ohno 1 Fuji-machi, Hirohata-ku, Himeji City Nippon Steel Corporation Stock company Hirohata Works
Claims (6)
の金属めっき或いはクロム水和酸化物系の化成処理皮膜
を施した後、さらにその上に熱可塑性の非晶性ポリエス
テル樹脂組成物を下層とし、熱可塑性のポリエチレンナ
フタレート樹脂を上層とする二層に被覆したことを特徴
とする金属容器用片面樹脂複合金属板。1. A thermoplastic amorphous polyester resin composition, which is obtained by applying a metal plating of Sn, Cr, Ni or the like or a chemical conversion treatment film of chromium hydrate oxide on one surface of a metal plate, and further coating the film. As a lower layer and a thermoplastic polyethylene naphthalate resin as an upper layer are coated in two layers to form a single-sided resin composite metal plate for a metal container.
の金属めっき或いはクロム水和酸化物系の化成処理皮膜
を施した後、さらに一方の面の上に熱可塑性の非晶性ポ
リエステル樹脂組成物を下層とし、熱可塑性のポリエチ
レンナフタレート樹脂を上層とする二層に被覆したこと
を特徴とする金属容器用片面樹脂複合金属板。2. A thermoplastic amorphous polyester is further coated on one surface after metal plating of Sn, Cr, Ni or the like or a chemical conversion coating of chromium hydrate oxide is applied on both surfaces of the metal plate. A single-sided resin composite metal plate for a metal container, which is obtained by coating a resin composition as a lower layer and a thermoplastic polyethylene naphthalate resin as an upper layer in two layers.
等の金属めっき、もう一方の面をクロム水和酸化物系の
化成処理皮膜の表裏異種皮膜を施した後、上記金属めっ
きの上に熱可塑性の非晶性ポリエステル樹脂組成物を下
層とし、熱可塑性のポリエチレンナフタレート樹脂を上
層とする二層に被覆したことを特徴とする金属容器用片
面樹脂複合金属板。3. One side of the metal plate surface is Sn, Cr, Ni
Metal plating such as, after applying the different surface of the chromium hydrate oxide-based chemical conversion coating on the other side, the thermoplastic amorphous polyester resin composition as the lower layer on the metal plating, A single-sided resin composite metal plate for a metal container, characterized by being coated with two layers having a plastic polyethylene naphthalate resin as an upper layer.
において、非晶性ポリエステル樹脂／ポリエチレンナフ
タレート樹脂二層被覆側を缶外面とし、さらにもう片面
側の裸の金属板またはＳｎ、Ｃｒ、Ｎｉ等の金属めっき
或いはクロム水和酸化物系の化成処理皮膜の上に熱硬化
性樹脂組成物を被覆して、缶内面として使用する金属容
器用両面樹脂複合金属板。4. The resin composite metal plate according to any one of claims 1, 2 and 3, wherein the amorphous polyester resin / polyethylene naphthalate resin two-layer coating side is an outer surface of the can, and the other side is a bare metal plate or Sn, A double-sided resin composite metal plate for a metal container, which is used as an inner surface of a can by coating a thermosetting resin composition on a metal plating of Cr, Ni or the like or a hydrated chromium oxide conversion coating.
において、非晶性ポリエステル樹脂／ポリエチレンナフ
タレート樹脂二層被覆側を缶外面とし、さらにもう片面
側の裸の金属板またはＳｎ、Ｃｒ、Ｎｉ等の金属めっき
或いはクロム水和酸化物系の化成処理皮膜の上に熱可塑
性樹脂組成物を被覆して、缶内面として使用する金属容
器用両面樹脂複合金属板。5. The resin composite metal plate according to claim 1, 2 or 3, wherein the amorphous polyester resin / polyethylene naphthalate resin two-layer coating side is the outer surface of the can, and the other side is a bare metal plate or Sn, A double-sided resin composite metal plate for a metal container, which is used as an inner surface of a can by coating a thermoplastic resin composition on a metal plating of Cr, Ni or the like or a hydrated chromium oxide conversion coating.
において、非晶性ポリエステル樹脂／ポリエチレンナフ
タレート樹脂二層被覆側を缶外面とし、さらにもう片面
側の裸の金属板またはＳｎ、Ｃｒ、Ｎｉ等の金属めっき
或いはクロム水和酸化物系の化成処理皮膜の上に、まず
熱硬化性樹脂組成物を被覆し、さらに熱可塑性樹脂組成
物を二層に被覆して、缶内面として使用する金属容器用
両面樹脂複合金属板。6. The resin composite metal plate according to any one of claims 1, 2 and 3, wherein the amorphous polyester resin / polyethylene naphthalate resin two-layer coating side is an outer surface of the can, and the other side is a bare metal plate or Sn, A thermosetting resin composition is first coated on a metal plating of Cr, Ni or the like or a hydrated chromium oxide type chemical conversion treatment film, and then a thermoplastic resin composition is further coated in two layers to form an inner surface of a can. Double-sided resin composite metal plate for metal containers used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8028314A JPH09216313A (en) | 1996-02-15 | 1996-02-15 | Resin composite metal plate for metal vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8028314A JPH09216313A (en) | 1996-02-15 | 1996-02-15 | Resin composite metal plate for metal vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09216313A true JPH09216313A (en) | 1997-08-19 |
Family
ID=12245165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8028314A Pending JPH09216313A (en) | 1996-02-15 | 1996-02-15 | Resin composite metal plate for metal vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09216313A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02501638A (en) * | 1987-10-15 | 1990-06-07 | シーエムビー パッケイジング（ユーケー） リミテド | laminated metal sheets |
| JPH0416341A (en) * | 1990-05-10 | 1992-01-21 | Nippon Steel Corp | Resin-coated steel sheet for draw wiping can and draw wiping can |
| JPH0740139U (en) * | 1993-12-28 | 1995-07-18 | 凸版印刷株式会社 | Polyethylene naphthalate film laminated metal plate |
-
1996
- 1996-02-15 JP JP8028314A patent/JPH09216313A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02501638A (en) * | 1987-10-15 | 1990-06-07 | シーエムビー パッケイジング（ユーケー） リミテド | laminated metal sheets |
| JPH0416341A (en) * | 1990-05-10 | 1992-01-21 | Nippon Steel Corp | Resin-coated steel sheet for draw wiping can and draw wiping can |
| JPH0740139U (en) * | 1993-12-28 | 1995-07-18 | 凸版印刷株式会社 | Polyethylene naphthalate film laminated metal plate |
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