JPH01288420A - Manufacture of resin coating metallic plate - Google Patents
Manufacture of resin coating metallic plateInfo
- Publication number
- JPH01288420A JPH01288420A JP63116873A JP11687388A JPH01288420A JP H01288420 A JPH01288420 A JP H01288420A JP 63116873 A JP63116873 A JP 63116873A JP 11687388 A JP11687388 A JP 11687388A JP H01288420 A JPH01288420 A JP H01288420A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- coating
- metal plate
- amorphous
- metallic plate
- 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
- 229920005989 resin Polymers 0.000 title claims abstract description 49
- 239000011347 resin Substances 0.000 title claims abstract description 49
- 239000011248 coating agent Substances 0.000 title claims abstract description 21
- 238000000576 coating method Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 13
- 230000009477 glass transition Effects 0.000 claims abstract description 10
- 229920006127 amorphous resin Polymers 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims description 40
- 239000002184 metal Substances 0.000 claims description 40
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 10
- 239000002994 raw material Substances 0.000 abstract description 4
- 230000004927 fusion Effects 0.000 abstract 4
- 239000011521 glass Substances 0.000 abstract 2
- 238000005260 corrosion Methods 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 9
- 238000002791 soaking Methods 0.000 description 8
- 229920001225 polyester resin Polymers 0.000 description 6
- 239000004645 polyester resin Substances 0.000 description 6
- 238000011282 treatment Methods 0.000 description 5
- 238000007747 plating Methods 0.000 description 4
- 229920006038 crystalline resin Polymers 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 241000269821 Scombridae Species 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical group [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 235000020640 mackerel Nutrition 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、すぐれた耐食性及び密着性を有する樹脂被
覆金属板の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for producing a resin-coated metal plate having excellent corrosion resistance and adhesion.
（従来の技術）
従来、すぐれた耐食性を有する樹脂被覆金属板を製造す
るに際し、金属表面に樹脂を連続的に被覆する場合、予
熱しである金属板に押出機で溶融混練された熱可塑性樹
脂を、Ｔダイから押出す方法が特開昭５７−２０３５４
５号公報で提案されている。(Prior art) Conventionally, when manufacturing a resin-coated metal plate with excellent corrosion resistance, when continuously coating the metal surface with resin, a thermoplastic resin that is melt-kneaded on a preheated metal plate with an extruder is used. The method of extruding from a T-die is disclosed in Japanese Patent Application Laid-Open No. 57-20354.
This is proposed in Publication No. 5.
またポリエステル樹脂フィルム被覆金属板の製造方法と
して特公昭６０−４７１０３号公報に見られるような、
ポリエステル樹脂フィルムを予熱された金属板にラミネ
ート後、６０秒以内に冷却し、上層に結晶性ポリエステ
ル樹脂、下層に無定形結晶性ポリエステル樹脂の２層構
造とする製造方法が知られている。In addition, as a method for manufacturing a metal plate coated with a polyester resin film, as shown in Japanese Patent Publication No. 60-47103,
A manufacturing method is known in which a polyester resin film is laminated onto a preheated metal plate and then cooled within 60 seconds to form a two-layer structure of a crystalline polyester resin in the upper layer and an amorphous crystalline polyester resin in the lower layer.
このように樹脂被覆金属板において、被覆樹脂層の上層
が結晶質層であれば耐食性にすぐれており、下層が無定
形な非晶質層であれば、金属板との密着性がすぐれてい
る。In this way, in a resin-coated metal plate, if the upper layer of the coating resin layer is a crystalline layer, it has excellent corrosion resistance, and if the lower layer is an amorphous layer, it has excellent adhesion with the metal plate. .
（発明が解決しようとする課題）
上記特開昭５７−２０３５４５号公報提案法では、金属
板と冷却ロールとの界面に溶融した樹脂を流下させて被
覆するために、冷却ロールにより急速に冷却され、樹脂
層は非晶質化してしまい、金属板との密着性はすぐれて
いるが、耐食性が劣る。一方特公昭６０−４７１０３号
公報提案法ではポリエステル樹脂フィルムを用いるため
に、金属板に押出機で溶融混練された熱可望性樹脂を、
Ｔダイから押出す方法に比べて原料コストが高くなる。(Problems to be Solved by the Invention) In the method proposed in JP-A No. 57-203545, the interface between the metal plate and the cooling roll is rapidly cooled by the cooling roll in order to flow down and cover the interface between the metal plate and the cooling roll. , the resin layer becomes amorphous and has excellent adhesion to the metal plate, but poor corrosion resistance. On the other hand, in the method proposed in Japanese Patent Publication No. 60-47103, in order to use a polyester resin film, a thermoplastic resin is melt-kneaded on a metal plate using an extruder.
The raw material cost is higher than the method of extruding from a T-die.
本発明は原料コスト・が安く、しかも耐食性及び密着性
のすぐれた樹脂被覆金属板を製造することができる方法
を堤供するものである。The present invention provides a method for manufacturing resin-coated metal plates with low raw material costs and excellent corrosion resistance and adhesion.
本発明の要旨は次の通りである。 The gist of the invention is as follows.
一対のロールで圧接された予熱金属板と一方の冷却ロー
ルの界面に、押出機で溶融混練された結晶性熱可塑性樹
脂を、Ｔダイからフィルム状に流下して得られた、冷却
ロールによって象、速冷却されて非晶質化した樹脂被覆
金属板を、上記樹脂のガラス転移点以」二融点以下で均
熱処理して被覆樹脂を結晶化させ、次いで金属板を被覆
樹脂の融点以上に２、速加熱して、被覆樹脂の内層のみ
を溶融し、その直後にガラス転移点以下６．ｒ急速冷却
して、内層が非晶質、外層が結晶質の２層構造の樹脂被
覆金属板を得ることを特徴２：する樹脂被覆金属板の製
造方法。The crystalline thermoplastic resin melted and kneaded in an extruder is poured onto the interface between the preheated metal plate pressed by a pair of rolls and one of the cooling rolls. The resin-coated metal plate, which has been quickly cooled to become amorphous, is soaked at a temperature above the glass transition point of the resin and below the melting point to crystallize the coating resin, and then the metal plate is heated to a temperature above the melting point of the coating resin. , heat rapidly to melt only the inner layer of the coating resin, and immediately below the glass transition point 6. Characteristic 2: A method for producing a resin-coated metal plate, which comprises rapidly cooling to obtain a resin-coated metal plate having a two-layer structure in which the inner layer is amorphous and the outer layer is crystalline.
なお本発明では、金属板として、鋼板（箔を含む）、ア
ルミニウム板（箔を含む）または該金属板の表面に次の
いずれかの表面処理ずなわぢ■５ｎＳＺｎ、 ／Ｖ、
Ｐｂ、 Ｎｉ、 ＣｒまたはＣｕのめっき■上記■に示
す金属の２種以上の複合めっき■上記■番こ示す金属の
１種以Ｊ二を含む合金のめっき■上記■に示す金属の１
種以」−を主成分とする複合めっき
を施したものなどが挙げられ、さらに上記金属板にクロ
ム酸塩あるいはリン酸塩処理したものも使用できる。In the present invention, the metal plate is a steel plate (including foil), an aluminum plate (including foil), or the surface of the metal plate is subjected to one of the following surface treatments: 5nSZn, /V,
Pb, Ni, Cr or Cu plating ■Composite plating of two or more of the metals shown in ■ above ■Plating of an alloy containing one or more of the metals shown in # above ■1 of the metals shown in ■ above
For example, those plated with a composite plating whose main component is chromate or phosphate may also be used.
また本発明で被覆に用いる結晶性熱可塑性樹脂とはポリ
エステル樹脂やポリオレフィン樹脂が代表的である。Further, the crystalline thermoplastic resin used for coating in the present invention is typically a polyester resin or a polyolefin resin.
以下本発明について詳細に説明する
第１図は本発明法を実施する樹脂被覆金属板製造装置例
を示したものであり、冷却ロール１と；、ツブロール２
とで圧接された予熱金属板３と、冷却ロール１の界面に
押出機４を経て、Ｔダイ５より溶融した結晶性熱可塑性
樹脂６を流ドし、金属板３にラミネートさ（）゛る。冷
却ロール１より離れた樹脂被覆金属板の被覆樹脂層は冷
却ロール１で９、速冷却されて、非晶質化している。上
記の如くに非晶質化している樹脂層を結晶化させるため
、均熱装置７で結晶性熱可塑性樹脂のガラス転移点以上
融点以下に樹脂被覆金属板１０を加熱し、さらにその温
度で、結晶化所要時間保持する。均熱処理する温度とし
ては結晶性熱可塑性樹脂の結晶化速度が最大となる温度
が、処理時間を短くする点から好ましい。次に外層に結
晶質の樹脂、内層に非晶質の樹脂の２層構造とするため
に、急速加熱装置８により樹脂被覆金属板ｌＯの金属板
ｊ３を結晶性熱可塑性樹脂の融点以」二に急速加熱し、
樹脂の内層のみを溶融し、さらにその直後に急速冷却装
置９により樹脂被覆金属板１０を結晶性熱ｉｉＪ望性相
性樹脂ラス転移点以下に急速冷却するので、急速冷却装
置９の出側の被覆樹脂は、！ＡＮには結晶質の樹脂、内
層には非晶質の樹脂の２層構造となる。外層の結晶質の
樹脂と内層の非晶質の樹脂の割合については特に制限は
な（、象、速加熱速慶や急速加熱温度を調整して、樹脂
被覆金属板の要求性能（耐食性、密着性）に応じて造り
分けることができる。FIG. 1, which will explain the present invention in detail below, shows an example of a resin-coated metal plate manufacturing apparatus for carrying out the method of the present invention.
A molten crystalline thermoplastic resin 6 is poured from a T-die 5 through an extruder 4 onto the interface between the preheated metal plate 3 and the cooling roll 1, which are pressure-welded with each other, and is laminated onto the metal plate 3. . The coating resin layer of the resin-coated metal plate separated from the cooling roll 1 is quickly cooled by the cooling roll 1 9 and becomes amorphous. In order to crystallize the resin layer that has become amorphous as described above, the resin-coated metal plate 10 is heated in the soaking device 7 to a temperature above the glass transition point of the crystalline thermoplastic resin and below the melting point, and further, at that temperature, Hold for the required time for crystallization. The temperature at which the soaking treatment is performed is preferably the temperature at which the crystallization rate of the crystalline thermoplastic resin is maximum, from the viewpoint of shortening the treatment time. Next, in order to form a two-layer structure with a crystalline resin for the outer layer and an amorphous resin for the inner layer, the metal plate j3 of the resin-coated metal plate lO is heated to a temperature higher than the melting point of the crystalline thermoplastic resin using a rapid heating device 8. heating rapidly to
Only the inner layer of the resin is melted, and immediately after that, the resin-coated metal plate 10 is rapidly cooled to below the crystalline heat iiJ desirably compatible resin lath transition point by the rapid cooling device 9, so that the coating on the exit side of the rapid cooling device 9 is Resin is! The AN has a two-layer structure, with a crystalline resin and an amorphous resin in the inner layer. There are no particular restrictions on the ratio of the crystalline resin in the outer layer to the amorphous resin in the inner layer. They can be divided according to gender.
なお均熱装置としてはオーブン加熱式や赤外線加熱式が
好ましく、象、速加熱するプ）法としては誘導加熱や抵
抗加熱が好適である。また急速冷却方法としては水冷あ
るいはロール冷却が好ましい。As the soaking device, an oven heating type or an infrared heating type is preferable, and as a rapid heating method, induction heating or resistance heating is preferable. Moreover, as a rapid cooling method, water cooling or roll cooling is preferable.
（実施例）
第１図の均熱装置７としてオーブン加熱式を、象、速加
熱装置８として誘導加熱方式を、象、速冷却装置９とし
てロール冷却方式を用いた製造装置を使用し、金属板と
して厚み０゜２ｍの電解クロム酸処理鋼板を用い、それ
を２００°Ｃに予熱した後、ポリエチレンテレフタレー
ト（ガラス転移点７０゛Ｃ１融点２６０°Ｃ）を溶融押
出して得た樹脂被覆金属板について、第１表のごとき試
験結果を得た。(Example) A manufacturing apparatus using an oven heating type as the soaking device 7 in FIG. 1, an induction heating method as the rapid heating device 8, and a roll cooling method as the rapid cooling device 9 was used. About a resin-coated metal plate obtained by using an electrolytic chromic acid treated steel plate with a thickness of 0°2m as a plate, preheating it to 200°C, and then melting and extruding polyethylene terephthalate (glass transition point 70°C1 melting point 260°C) , the test results shown in Table 1 were obtained.
なお溶融樹脂の温度は２８０°Ｃ１被覆厚みは５゜−で
あり、またラインスピードは２０ｍ／ｗｉｎである。実
施例では１９０°Ｃで２分間均熱処理し、その後２６５
°Ｃに２０°（／ｓｅｃの加熱速度で急速加熱して、そ
の１秒後に５０″Ｃまで急速冷却した場合であり、従来
例は均熱処理及び急速加熱処理は実施せずに、急速冷却
装置９で樹脂被覆金属板を急冷した場合である。従来例
ではポリエチレンテレフタレートはすべて非晶質化して
おり、また実施例では外層の３０ｔｒｍが結晶化してお
り、内層の２０．は非晶質化していた。The temperature of the molten resin was 280 DEG C., the coating thickness was 5 DEG -, and the line speed was 20 m/win. In the example, soaking treatment was carried out at 190°C for 2 minutes, and then soaking at 265°C
This is a case of rapid heating at a heating rate of 20°C (/sec) and rapid cooling to 50"C one second later. In the conventional example, no soaking treatment or rapid heating treatment was performed, and a rapid cooling device was used. This is the case where the resin-coated metal plate was rapidly cooled in step 9. In the conventional example, all the polyethylene terephthalate was amorphous, and in the example, 30 trm of the outer layer was crystallized, and the inner layer 20 was amorphous. Ta.
なお第１表に示した性能試験は次の通りに行った。The performance tests shown in Table 1 were conducted as follows.
■密着性・１８０°Ｃ！ＩＩ離試験（引張速度； １０
０ｍ／ｍ１ｎ）■耐食性・・・３５°Ｃ１５％食塩水を
２０００時間噴霧■外 観・・・目視観察
結果は次の基準によって示した。■Adhesion/180°C! II release test (tensile speed; 10
0m/m1n) ■Corrosion resistance: Sprayed with 15% saline at 35°C for 2000 hours ■Appearance: Visual observation results were shown according to the following criteria.
○・・・良好 Δ・・・やや不良 ×・・・不良本
発明の実施例では、剥離試験においては樹脂層が破断し
、剥離不可能で、接着性は良好であり、また耐食性の試
験においては鯖の発生は認められなかった。一方従来例
では、剥離試験においては樹脂層が破断し、剥離不可能
で、接着性は良好であったが、耐食性の試験においては
錆の発生が認められた。○...Good Δ...Slightly poor ×...Poor In the examples of the present invention, the resin layer was broken in the peel test and could not be peeled off, and the adhesion was good, and the corrosion resistance test was poor. No occurrence of mackerel was observed. On the other hand, in the conventional example, the resin layer was broken in the peel test and could not be peeled off, and the adhesion was good, but rust was observed in the corrosion resistance test.
第 １ 表
（発明の効果）
以上詳述したごとく、本発明によれば、すぐれた性能（
耐食性、接着性）を有する樹脂被覆金属板を、原料コス
トも安く製造することができる。Table 1 (Effects of the Invention) As detailed above, according to the present invention, excellent performance (
A resin-coated metal plate having good corrosion resistance and adhesive properties can be manufactured at low raw material costs.
第１図は本発明の詳細な説明図である。
１・・・冷却ロール、２・・・ニップロール、３・・・
金属板、４・・・押出機、５・・・Ｔダイ、６・・・結
晶性熱可塑性樹脂、７・・・均熱装置、８・・・急速加
熱装置、９・・・象、速冷却装置、１０・・・樹脂被覆
金属板。
第１図FIG. 1 is a detailed explanatory diagram of the present invention. 1...Cooling roll, 2...Nip roll, 3...
Metal plate, 4... Extruder, 5... T die, 6... Crystalline thermoplastic resin, 7... Soaking device, 8... Rapid heating device, 9... Elephant, speed Cooling device, 10...resin-coated metal plate. Figure 1
Claims (1)
ルの界面に、押出機で溶融混練された結晶性熱可塑性樹
脂を、Ｔダイからフィルム状に流下して得られた、冷却
ロールによって急速冷却されて非晶質化した樹脂被覆金
属板を、上記樹脂のガラス転移点以上融点以下で均熱処
理して被覆樹脂を結晶化させ、次いで金属板を被覆樹脂
の融点以上に急速加熱して、被覆樹脂の内層のみを溶融
し、その直後にガラス転移点以下に急速冷却して、内層
が非晶質、外層が結晶質の２層構造の樹脂被覆金属板を
得ることを特徴とする樹脂被覆金属板の製造方法。A crystalline thermoplastic resin melted and kneaded in an extruder is poured into a film form from a T-die onto the interface between a preheated metal plate pressed by a pair of rolls and one cooling roll. The cooled and amorphous resin-coated metal plate is soaked at a temperature above the glass transition point and below the melting point of the resin to crystallize the coating resin, and then rapidly heated to above the melting point of the coating resin, A resin coating characterized in that only the inner layer of the coating resin is melted and then rapidly cooled to below the glass transition point to obtain a resin-coated metal plate with a two-layer structure in which the inner layer is amorphous and the outer layer is crystalline. Method of manufacturing metal plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63116873A JP2553910B2 (en) | 1988-05-16 | 1988-05-16 | Method for manufacturing resin-coated metal plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63116873A JP2553910B2 (en) | 1988-05-16 | 1988-05-16 | Method for manufacturing resin-coated metal plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01288420A true JPH01288420A (en) | 1989-11-20 |
| JP2553910B2 JP2553910B2 (en) | 1996-11-13 |
Family
ID=14697744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63116873A Expired - Lifetime JP2553910B2 (en) | 1988-05-16 | 1988-05-16 | Method for manufacturing resin-coated metal plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2553910B2 (en) |
-
1988
- 1988-05-16 JP JP63116873A patent/JP2553910B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2553910B2 (en) | 1996-11-13 |
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