JPH082613B2 - Method for manufacturing resin laminated metal plate - Google Patents
Method for manufacturing resin laminated metal plateInfo
- Publication number
- JPH082613B2 JPH082613B2 JP62313244A JP31324487A JPH082613B2 JP H082613 B2 JPH082613 B2 JP H082613B2 JP 62313244 A JP62313244 A JP 62313244A JP 31324487 A JP31324487 A JP 31324487A JP H082613 B2 JPH082613 B2 JP H082613B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- metal plate
- temperature
- laminated
- coating
- 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
- Laminated Bodies (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、熱硬化性粉体塗料塗装金属板にポリエチレ
ンテレフタレートフィルムを積層する場合、フィルムと
塗膜との密着性が高くなり、かつ、表面も平滑になる樹
脂積層金属板の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention has a high adhesion between a film and a coating film when a polyethylene terephthalate film is laminated on a thermosetting powder coating metal plate, and The present invention relates to a method for producing a resin laminated metal plate having a smooth surface.
（従来技術） ポリエチレンテレフタレート（以下PETという）フィ
ルムは、耐薬品性、耐摩耗性、耐熱性に優れているの
で、従来より金属板や塗装金属板に積層して、それらの
特性を付与するのに利用されている。例えば、食缶材料
の分野では、耐薬品性を利用して金属板に透明PETフィ
ルムを積層して、食品により缶が腐食されたり、缶より
有害物質が溶出するのを防止しており、また、内装や器
物に使用する塗装金属板の分野では、耐摩耗性を利用し
て塗装金属板に透明PETフィルムを積層して、塗膜の意
匠性を生かしながら塗膜に傷が付くのを防止している。(Prior Art) Polyethylene terephthalate (hereinafter referred to as PET) film has excellent chemical resistance, abrasion resistance, and heat resistance. Therefore, it has been conventionally laminated on a metal plate or a coated metal plate to impart those characteristics. Is used for. For example, in the field of food can materials, chemical resistance is used to laminate a transparent PET film on a metal plate to prevent food from corroding the can or leaching harmful substances from the can. In the field of coated metal plates used for interiors and equipment, a transparent PET film is laminated on the coated metal plate by utilizing abrasion resistance to prevent the coating film from being scratched while making the best use of the design of the coating film. are doing.
近年、このPETフィルムには、接着性を高めるために
種々表面処理を施したものが市販されているが、その積
層は、金属板に直接積層する場合、金属板をPETの溶融
温度以上に加熱して、金属板熱でフィルムを溶着する方
法で行っていた。一方、塗装金属板に積層する場合は、
塗料により異なり、塗料が熱可塑性塗料の場合、塗料の
溶融温度以上に加熱する方法で、塗料が熱硬化性樹脂の
場合は、塗料の熱硬化温度以上に加熱する方法で行って
いた。In recent years, this PET film is commercially available with various surface treatments to enhance the adhesiveness, but when laminating directly on a metal plate, the metal plate is heated to a temperature above the melting temperature of PET. Then, the film is welded by heat of the metal plate. On the other hand, when stacking on a painted metal plate,
Depending on the coating material, when the coating material is a thermoplastic coating material, it is heated to a temperature higher than the melting temperature of the coating material, and when the coating material is a thermosetting resin, it is heated to a temperature higher than the curing temperature of the coating material.
（発明が解決しようとする問題点） しかし、金属板に直接PETフィルムを積層する方法の
場合、フィルムが金属板により溶融流動してしまうた
め、フィルムに凹凸が生じ、外観が劣ってしまうもので
あった。(Problems to be solved by the invention) However, in the case of a method of directly laminating a PET film on a metal plate, since the film melts and flows due to the metal plate, unevenness occurs in the film, resulting in poor appearance. there were.
一方、塗装金属板にPETフィルムを積層する方法で
は、熱硬化性粉体塗料を硬化温度以上に加熱すると、表
面がゆず肌になり、その凹凸がフィルム積層後も表面に
表れてしまい、フィルムの密着性が劣るという問題があ
った。On the other hand, in the method of laminating a PET film on a coated metal plate, when the thermosetting powder coating material is heated to a temperature higher than the curing temperature, the surface becomes an orange skin, and the unevenness appears on the surface even after the film is laminated. There was a problem of poor adhesion.
本発明は、金属板に熱硬化性粉体塗料を塗装した後PE
Tフィルムを積層する樹脂積層金属板の製造方法におい
て、粉体塗料塗膜凹凸をなくし、密着性を高めることが
できる製造方法を提供するものである。The present invention is a PE sheet made by coating a thermosetting powder coating on a metal plate.
It is intended to provide a method for producing a resin-laminated metal plate in which a T film is laminated, by which unevenness of a powder coating film can be eliminated and adhesion can be improved.
（問題点を解決するための手段） 本発明は、PETフィルム積層金属板を、熱硬化性粉体
塗料の塗装後、塗料をその融点以上、硬化開始温度以下
で、PETの融点以下の温度に加熱してPETフィルムを積層
圧着し、しかる後に粉体塗料の硬化開始温度以上、PET
の融点以下の温度に加熱する方法で製造することにより
塗膜の凹凸をなくし、フィルムの密着性も高めた。(Means for Solving Problems) The present invention is to coat a PET film-laminated metal plate with a thermosetting powder coating material, and then to coat the coating material at a temperature not lower than its melting point and not higher than the curing start temperature and not higher than the melting point of PET. Heat to laminate and press-bond PET films, and then cure above the curing start temperature of the powder coating, PET
By manufacturing by a method of heating to a temperature not higher than the melting point of (3), unevenness of the coating film was eliminated and the adhesiveness of the film was also improved.
すなわち、本発明では、粉体塗料の加熱をPETフィル
ム積層時塗料の融点以上、硬化開始温度以下の温度にし
て、PETフィルム積層後に硬化開始温度以上にして硬化
させるのである。塗料をこのように加熱すれば、硬化時
の塗膜は、PETフィルムが積層されているので、収縮が
防止され、凹凸が発生しない。また、PETフィルム積層
時塗料は、熱硬化が開始されていないため、熱硬化反応
に携わる極性基が残存し、かつ、塗膜の粘度も上昇して
いないため、フィルムとの濡れ性が良好となり、フィル
ムの密着力が高くなる。さらに、塗料は、PETフィルム
の積層前後とも、PETの融点以下の温度にしか加熱しな
いので、フィルムは溶融流動せず、積層後の表面は平滑
に保たれる。That is, in the present invention, the heating of the powder coating material is carried out at a temperature not lower than the melting point of the coating material at the time of laminating the PET film and not higher than the curing start temperature, and then cured at not lower than the curing start temperature after laminating the PET film. When the paint is heated in this way, the PET film is laminated on the coating film at the time of curing, so that shrinkage is prevented and unevenness does not occur. In addition, the coating composition for PET film lamination does not start thermosetting, so the polar groups involved in the thermosetting reaction remain, and since the viscosity of the coating film does not increase, the wettability with the film becomes good. , The adhesion of the film becomes higher. Furthermore, since the coating material is heated only to a temperature equal to or lower than the melting point of PET before and after the PET film is laminated, the film does not melt and flow, and the surface after lamination is kept smooth.
（実施例） 実施例 融解温度が90〜100℃で、硬化開始温度が170〜180℃
の熱硬化性粉体塗料［日本ペイント（株）製、プレコー
ト600］を静電塗装法により亜鉛めっき鋼板上に膜厚が3
0〜40μとなるように塗装した後、近赤外線炉で160℃に
加熱して、その上に融点265℃のPETフィルム［東レ
（株）製、ルミラー（50μ）］を積層し、積層後250℃
で60秒間加熱した。この積層金属板のフィルム密着性は
2.2kg/cmで、フィルム表面は平滑であった。(Example) Example Melting temperature is 90 to 100 ° C, and curing start temperature is 170 to 180 ° C.
The thermosetting powder coating [Precoat 600, manufactured by Nippon Paint Co., Ltd.] of 3 is applied to the galvanized steel sheet by electrostatic coating to give a film thickness of 3
After coating so that it becomes 0-40μ, it is heated to 160 ° C in a near-infrared furnace, and a PET film with a melting point of 265 ° C [Lumirror (50μ), manufactured by Toray Industries, Inc.] is laminated on it, and after lamination 250 ℃
Heated for 60 seconds. The film adhesion of this laminated metal plate
The film surface was smooth at 2.2 kg / cm.
なお、フィルムの密着性試験は、積層フィルムの一部
を塗膜より剥離して折り返した後、折り返し方向にフィ
ルム引張って、フィルムが剥離し始めるときの強度を測
定する方法で行った。The film adhesion test was carried out by peeling a part of the laminated film from the coating film and folding it back, and then pulling the film in the folding direction to measure the strength at which the film begins to peel.
比較例 実施例での製造方法において、粉体塗料塗装後の加熱
を190℃に上昇させたところ、フィルム密着性は0.8Kg/c
mと低く、塗膜表面のゆず肌がフィルム表面にまで表れ
た。Comparative Example In the manufacturing method of the example, when heating after coating with the powder coating was increased to 190 ° C., the film adhesion was 0.8 Kg / c.
It was as low as m, and the orange peel of the coating film surface appeared even on the film surface.
また、実施例での製造方法において、PETフィルム積
層後の加熱を270℃に上昇させたところ、フィルム密着
性は2.1Kg/cmまで向上したが、フィルム表面は肌荒れに
なってしまった。In addition, in the manufacturing method of the example, when the heating after the PET film was laminated was raised to 270 ° C., the film adhesion was improved to 2.1 Kg / cm, but the film surface became rough.
なお、フィルムの密着性は実施例と同様の方法で測定
した。The adhesion of the film was measured by the same method as in the example.
（発明の効果） 以上のように、本発明によれば、熱硬化性粉体塗料塗
膜の凹凸が表面に表れず、塗膜に対するPETフィルムの
積層密着強度を高くすることができる。(Effects of the Invention) As described above, according to the present invention, the unevenness of the thermosetting powder coating film does not appear on the surface, and the lamination adhesion strength of the PET film to the coating film can be increased.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 長友 敏雄 千葉県市川市高谷新町７番地の１ 日新製 鋼株式会社新材料研究所内 (56)参考文献 特開 昭58−39448（ＪＰ，Ａ) 特開 昭61−149341（ＪＰ，Ａ) 特開 昭61−110545（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshio Nagatomo, No. 1, Takatani Shinmachi, Ichikawa City, Chiba Prefecture, Nisshin Steel Co., Ltd., New Materials Research Center (56) References JP 58-39448 (JP, A) JP 61-149341 (JP, A) JP 61-110545 (JP, A)
Claims (1)
ンテレフタレートフィルムを積層する積層金属板の製造
方法において、前記塗料として熱硬化性粉体塗料を用
い、この塗料を塗装した後、塗料をその融点以上、硬化
開始温度以下で、ポリエチレンテレフタレートの融点以
下の温度に加熱してポリエチレンテレフタレートフィル
ムを積層圧着し、しかる後に粉体塗料の硬化開始温度以
上、ポリエチレンテレフタレートの融点以下の温度に加
熱することを特徴とする樹脂積層金属板の製造方法。1. A method for producing a laminated metal plate, comprising applying a paint on a metal plate and then laminating a polyethylene terephthalate film on the metal plate, wherein a thermosetting powder paint is used as the paint, and after applying the paint, the paint is applied. The polyethylene terephthalate film is laminated and pressure-bonded by heating to a temperature not lower than the melting point and not higher than the curing start temperature and not higher than the melting point of polyethylene terephthalate, and then heated to a temperature not lower than the curing start temperature of the powder coating and not higher than the melting point of polyethylene terephthalate. A method for producing a resin-laminated metal plate, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62313244A JPH082613B2 (en) | 1987-12-11 | 1987-12-11 | Method for manufacturing resin laminated metal plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62313244A JPH082613B2 (en) | 1987-12-11 | 1987-12-11 | Method for manufacturing resin laminated metal plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01154746A JPH01154746A (en) | 1989-06-16 |
| JPH082613B2 true JPH082613B2 (en) | 1996-01-17 |
Family
ID=18038852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62313244A Expired - Lifetime JPH082613B2 (en) | 1987-12-11 | 1987-12-11 | Method for manufacturing resin laminated metal plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH082613B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2788497A (en) * | 1996-05-14 | 1997-12-05 | Toyo Kohan Co. Ltd. | Method and apparatus for manufacturing metallic sheet covered with thermoplastic resin |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5839448A (en) * | 1981-09-02 | 1983-03-08 | 東洋鋼鈑株式会社 | Colored metallic plate coated with transparent thermoplastic resin film |
| JPS61110545A (en) * | 1984-11-02 | 1986-05-28 | 川崎製鉄株式会社 | Rust-proof coated steel material |
| JPS61149341A (en) * | 1984-12-25 | 1986-07-08 | Toyo Kohan Co Ltd | Manufacture of polyester resin film-covered metal plate |
-
1987
- 1987-12-11 JP JP62313244A patent/JPH082613B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01154746A (en) | 1989-06-16 |
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