JPH07108646A - Pretreatment liquid for use in production of film-coated metal plate - Google Patents
Pretreatment liquid for use in production of film-coated metal plateInfo
- Publication number
- JPH07108646A JPH07108646A JP27887793A JP27887793A JPH07108646A JP H07108646 A JPH07108646 A JP H07108646A JP 27887793 A JP27887793 A JP 27887793A JP 27887793 A JP27887793 A JP 27887793A JP H07108646 A JPH07108646 A JP H07108646A
- Authority
- JP
- Japan
- Prior art keywords
- film
- metal plate
- pretreatment liquid
- weight
- parts
- 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
Landscapes
- Laminated Bodies (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、合成樹脂フィルムを鋼
板、アルミニウム板等の金属板に被覆する際、接着剤を
塗布するに先立って前記金属板の表面を処理するための
前処理液に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pretreatment liquid for treating the surface of a metal plate such as a steel plate and an aluminum plate with a synthetic resin film prior to applying an adhesive when coating the metal plate. .
【０００２】[0002]
【従来の技術】冷延鋼板や亜鉛メッキ鋼板等の表面を美
化し、かつ耐久性の向上を図るため、塗料による塗装に
代え、各種合成樹脂製フィルムを接着被覆したものは知
られている。このようなフィルム被覆鋼板の被覆用フィ
ルムとしては、塩化ビニル樹脂製のフィルム（以下、Ｐ
ＶＣフィルムという）が加工性や物性等の点から多用さ
れている。2. Description of the Related Art In order to beautify the surface of a cold-rolled steel plate, a galvanized steel plate, etc. and improve durability, it is known that various synthetic resin films are adhesively coated instead of coating with a paint. As a film for coating such a film-coated steel sheet, a film made of vinyl chloride resin (hereinafter referred to as P
VC film) is often used in terms of processability and physical properties.
【０００３】この場合、通常、ＰＶＣフィルム用の接着
剤を鋼板面に塗布し２００〜２３０℃の高温で加熱処理
し、次いでフィルムを被覆する。そのため、ＰＶＣフィ
ルムの肉厚が薄いと、高温のためフィルムが変形し、外
観が損なわれる。そこで、接着に当たっての加熱処理温
度を低温で行うことが望ましいが、前記温度より低いと
接着力が不足し、製品の鋼板とフィルムの間の剥離強
度、耐沸水性、耐蝕性等が低下するという問題点があっ
た。In this case, usually, an adhesive for PVC film is applied to the steel plate surface and heat-treated at a high temperature of 200 to 230 ° C., and then the film is coated. Therefore, when the thickness of the PVC film is thin, the film is deformed due to the high temperature and the appearance is impaired. Therefore, it is desirable to perform the heat treatment temperature for bonding at a low temperature, but if the temperature is lower than the above temperature, the adhesive strength will be insufficient, and the peel strength between the steel plate and the film of the product, boiling water resistance, corrosion resistance, etc. will decrease. There was a problem.
【０００４】[0004]
【発明が解決しようとする課題】本発明者らは、上記の
ような問題点を解決すべく、種々研究の結果、金属板に
フィルムの接着剤を塗布する前に、金属板の表面に対
し、特定の処理液を用いて前処理を施しておくことによ
り、金属板表面温度１３０〜１７０℃程度の低温で薄い
フィルムを用いても何等変形せず、外観を損なうことな
く、かつ剥離強度、耐沸水性、耐蝕性にも優れたフィル
ム被覆金属板が得られる知見を得、本発明に到達した。
本発明の目的は、低温下で簡単な処理手段により、優れ
たフィルム被覆金属板が得られる前処理液を提供するに
ある。DISCLOSURE OF THE INVENTION In order to solve the above problems, the inventors of the present invention have conducted various studies and found that before applying a film adhesive to a metal plate, the surface of the metal plate was By performing a pretreatment with a specific treatment liquid, even if a thin film is used at a low temperature of a metal plate surface temperature of about 130 to 170 ° C, the thin film is not deformed at all, the appearance is not impaired, and the peel strength, The present invention has been achieved by finding that a film-coated metal plate having excellent boiling water resistance and corrosion resistance can be obtained.
An object of the present invention is to provide a pretreatment liquid capable of obtaining an excellent film-coated metal plate by a simple treatment means at a low temperature.
【０００５】[0005]
【課題を解決するための手段】すなわち、本発明の前処
理液は、ポリアクリル酸、ポリメタクリル酸又はアクリ
ル酸もしくはメタクリル酸を主成分とする共重合体ある
いはこれらの混合物１００重量部と、クロメート系防錆
顔料１５〜１２０重量部とを含有した水溶液からなるフ
ィルム被覆金属板製造用の前処理液である。That is, the pretreatment liquid of the present invention comprises 100 parts by weight of polyacrylic acid, polymethacrylic acid, a copolymer containing acrylic acid or methacrylic acid as a main component or a mixture thereof, and a chromate. A pretreatment liquid for producing a film-coated metal plate, which comprises an aqueous solution containing 15 to 120 parts by weight of a system rust preventive pigment.
【０００６】本発明の前処理液の主成分をなす重合体
は、ポリアクリル酸、ポリメタクリル酸、又はアクリル
酸もしくはメタクリル酸を主成分とする共重合体のいず
れでもよく、またそれらの混合物であってもよい。The polymer as a main component of the pretreatment liquid of the present invention may be any of polyacrylic acid, polymethacrylic acid, or a copolymer having acrylic acid or methacrylic acid as a main component, or a mixture thereof. It may be.
【０００７】また、クロメート系防錆顔料とは、クロム
酸化物を主成分に、その他カリウム、亜鉛、ストロンチ
ウム、バリウム他の金属元素を含むジンククロメート、
ストロンチウムクロメート、バリウムカリウムクロメー
ト等を指す。これらの防錆顔料は、前記主成分１００重
量部に対して１５〜１２０重量部の範囲、好ましくは２
０〜１００重量部の範囲で添加する。防錆顔料の添加量
が１５重量部未満では耐蝕性が悪くなったり、また１２
０重量部を超えると剥離強度が低下するので、上記の範
囲とすることが肝要である。The chromate-based rust preventive pigment is zinc chromate containing chromium oxide as a main component and other metal elements such as potassium, zinc, strontium, barium, and the like.
Refers to strontium chromate, barium potassium chromate, etc. These rust preventive pigments are contained in the range of 15 to 120 parts by weight, preferably 2 to 100 parts by weight of the main component.
It is added in the range of 0 to 100 parts by weight. If the amount of the rust preventive pigment added is less than 15 parts by weight, the corrosion resistance may deteriorate,
If the amount exceeds 0 part by weight, the peel strength will decrease, so it is important to set the above range.
【０００８】上記組成の配合にて水に溶解して通常０．
０３％程度の水溶液とし、これを金属板表面に塗布し乾
燥することにより前処理を行う。通常、前記処理液を金
属板上に２．０ｍｇ／ｍ2 〜１００ｍｇ／ｍ2 塗工して
乾燥する。充分な接着強度を得るためには上記の範囲が
好ましい。処理液の膜厚が薄いため５０〜８０℃の低温
で短時間に乾燥することができる。塗工手段としては、
公知のスプレー方式、浸漬方式、ロールコーティング方
式などいずれでもよいが、均一に塗布することが肝要で
ある。When the above composition is used, it is dissolved in water and is usually adjusted to 0.
An aqueous solution of about 03% is applied, which is applied to the surface of the metal plate and dried to perform pretreatment. Usually, the treatment liquid is dried by 2 coating 2.0mg / m 2 ~100mg / m on the metal plate. The above range is preferred to obtain sufficient adhesive strength. Since the film thickness of the treatment liquid is thin, it can be dried at a low temperature of 50 to 80 ° C. in a short time. As a coating method,
Any known spraying method, dipping method, roll coating method, or the like may be used, but it is essential to apply it uniformly.
【０００９】前処理液乾燥後、ポリエステル系又はアク
リル系接着剤を塗布する。該接着剤塗布後の加熱処理温
度は、金属板表面温度１３０〜１７０℃程度でよく、肉
厚の薄いフィルムを使用しても接着するフィルムの変形
等は殆ど生ずることがない。After drying the pretreatment liquid, a polyester or acrylic adhesive is applied. The heat treatment temperature after applying the adhesive may be a metal plate surface temperature of about 130 to 170 ° C., and even if a thin film is used, deformation of the film to be adhered hardly occurs.
【００１０】本発明の前処理液は、熱延鋼板、冷延鋼
板、電気亜鉛メッキ鋼板、溶融メッキ鋼板、スズメッキ
鋼板、ステンレス鋼板等の各種鋼板やアルミニウム板等
いずれにも適用できる。The pretreatment liquid of the present invention can be applied to various types of steel sheets such as hot rolled steel sheets, cold rolled steel sheets, electrogalvanized steel sheets, hot-dip galvanized steel sheets, tin-plated steel sheets and stainless steel sheets, and aluminum sheets.
【００１１】[0011]
〔実施例１〜５〕表１に示す防錆顔料（ジンククロメー
ト）をポリアクリル酸水溶液に添加（ポリアクリル酸１
００重量部に対し防錆顔料６０重量部の割合）して前処
理液（濃度０．０３％）を作成し、得られた前処理液を
電気亜鉛メッキ鋼板の片面にメイヤーバーコーターによ
って２．５ｍｇ／ｍ2 塗布し、８０℃の熱風で乾燥させ
た。次いで、ポリエステル系接着剤を塗布後、赤外線ヒ
ーター加熱炉により塗布面の乾燥と加熱を行い、鋼板表
面温度を１５０℃に保持しつつ、直ちにロールラミネー
ターを用いてＰＶＣフィルム（厚さ０．１８ｍｍ）を線
圧１０ｋｇ／ｃｍで被覆し、冷却してＰＶＣ被覆鋼板サ
ンプルを得た。[Examples 1 to 5] The rust preventive pigment (zinc chromate) shown in Table 1 was added to an aqueous polyacrylic acid solution (polyacrylic acid 1
1. A pretreatment liquid (concentration 0.03%) was prepared by adding 60 parts by weight of rust preventive pigment to 00 parts by weight), and the obtained pretreatment liquid was applied to one side of an electrogalvanized steel sheet by a Meyer bar coater. 5 mg / m 2 was applied and dried with hot air at 80 ° C. Then, after applying the polyester adhesive, the coated surface is dried and heated by an infrared heater heating furnace, and while maintaining the steel plate surface temperature at 150 ° C., immediately using a roll laminator, a PVC film (thickness 0.18 mm) Was coated with a linear pressure of 10 kg / cm and cooled to obtain a PVC-coated steel plate sample.
【００１２】〔比較例１〕防錆顔料を添加しない前処理
液を用いた外は、実施例１と同一条件でＰＶＣフィルム
を被覆した。Comparative Example 1 A PVC film was coated under the same conditions as in Example 1 except that a pretreatment liquid containing no rust preventive pigment was used.
【００１３】〔比較例２〜４〕防錆顔料の添加量を本発
明の範囲外とした外は、実施例１と同一条件でＰＶＣフ
ィルムを被覆した。Comparative Examples 2 to 4 A PVC film was coated under the same conditions as in Example 1 except that the amount of the rust preventive pigment added was outside the range of the present invention.
【００１４】上記実施例及び比較例の各サンプルの配合
物組成及び性能試験を行った結果は表１に示すとおりで
あった。Table 1 shows the results of composition tests and performance tests of the samples of the above Examples and Comparative Examples.
【００１５】[0015]
【表１】 [Table 1]
【００１６】なお、「剥離強度」については、ＪＩＳ
Ｋ−６７４４に従い、１８０剥離試験にて常温での剥離
強度を測定した。また、「耐沸水性」については、サン
プルを沸騰水に５時間浸漬後、上記剥離強度を測定した
ものである。「耐蝕性」については、被覆したＰＶＣフ
ィルム面にクロスカットを鋼板に達するまで入れ、ＪＩ
Ｓ Ｚ−２３７１に従って、塩水噴霧テストを行い、１
０００時間経過後のフィルム面の変化を肉眼で評価し
た。フィルムのふくれ幅が殆どなく実用上の問題のない
ものを○、若干ふくれを生ずるものを△、ふくれ幅が大
きいものを×とした。Regarding "peel strength", JIS
According to K-6744, the peel strength at room temperature was measured by the 180 peel test. As for "boiling resistance", the peel strength was measured after the sample was immersed in boiling water for 5 hours. Regarding "corrosion resistance", a cross cut is applied to the coated PVC film surface until it reaches the steel plate, and then JI
A salt spray test was performed according to S Z-2371 and 1
The change of the film surface after 000 hours was visually evaluated. The film having almost no blistering width and having no problem in practical use was evaluated as ○, the film slightly blistering was evaluated as Δ, and the film having a large blistering width was evaluated as ×.
【００１７】表１から、実施例１〜５の本発明の前処理
液を使用して得られたフィルム被覆鋼板は、低温の接着
条件で優れた性能を有していることがわかる。これに対
して、防錆顔料の添加比率が本発明の範囲外である比較
例１〜４は、剥離強度や耐蝕性の点で劣ることがわか
る。It can be seen from Table 1 that the film-coated steel sheets obtained by using the pretreatment liquids of the present invention of Examples 1 to 5 have excellent performance under low temperature bonding conditions. On the other hand, Comparative Examples 1 to 4 in which the addition ratio of the rust preventive pigment is out of the range of the present invention are inferior in peel strength and corrosion resistance.
【００１８】[0018]
【発明の効果】以上説明したように、本発明に係る前処
理液を使用することにより、従来法に比し大幅な低温下
でフィルムの接着ができ、剥離強度、耐沸水性、耐蝕性
等、フィルムの優れた接着特性を有するとともに、綺麗
な外観を有するフィルム被覆鋼板を容易に得ることがで
きるので、その効果は頗る大きい。As described above, by using the pretreatment liquid according to the present invention, the film can be adhered at a much lower temperature than the conventional method, and the peel strength, boiling water resistance, corrosion resistance, etc. Since the film-coated steel sheet having the excellent adhesive property of the film and the beautiful appearance can be easily obtained, the effect is extremely large.
Claims (1)
アクリル酸もしくはメタクリル酸を主成分とする共重合
体あるいはこれらの混合物１００重量部と、クロメート
系防錆顔料１５〜１２０重量部とを含有した水溶液から
なるフィルム被覆金属板製造用の前処理液。1. An aqueous solution containing 100 parts by weight of polyacrylic acid, polymethacrylic acid or a copolymer containing acrylic acid or methacrylic acid as a main component or a mixture thereof, and 15 to 120 parts by weight of a chromate rust preventive pigment. A pretreatment liquid for the production of a film-coated metal plate comprising.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27887793A JP3312795B2 (en) | 1993-10-13 | 1993-10-13 | Pretreatment liquid for the production of film-coated metal sheets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27887793A JP3312795B2 (en) | 1993-10-13 | 1993-10-13 | Pretreatment liquid for the production of film-coated metal sheets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07108646A true JPH07108646A (en) | 1995-04-25 |
| JP3312795B2 JP3312795B2 (en) | 2002-08-12 |
Family
ID=17603365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27887793A Expired - Fee Related JP3312795B2 (en) | 1993-10-13 | 1993-10-13 | Pretreatment liquid for the production of film-coated metal sheets |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3312795B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019019308A (en) * | 2017-07-19 | 2019-02-07 | 住友金属鉱山株式会社 | Adhesive method of metal material using adhesive, and metal material conjugate |
-
1993
- 1993-10-13 JP JP27887793A patent/JP3312795B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019019308A (en) * | 2017-07-19 | 2019-02-07 | 住友金属鉱山株式会社 | Adhesive method of metal material using adhesive, and metal material conjugate |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3312795B2 (en) | 2002-08-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |