JPS637872A - Equipment for making painted steel plate - Google Patents
Equipment for making painted steel plateInfo
- Publication number
- JPS637872A JPS637872A JP15143086A JP15143086A JPS637872A JP S637872 A JPS637872 A JP S637872A JP 15143086 A JP15143086 A JP 15143086A JP 15143086 A JP15143086 A JP 15143086A JP S637872 A JPS637872 A JP S637872A
- Authority
- JP
- Japan
- Prior art keywords
- paint
- film
- electron beam
- irradiation
- steel 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 30
- 239000010959 steel Substances 0.000 title claims abstract description 30
- 239000003973 paint Substances 0.000 claims abstract description 27
- 238000010894 electron beam technology Methods 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000009832 plasma treatment Methods 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims description 24
- 238000000576 coating method Methods 0.000 claims description 24
- 230000004048 modification Effects 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 238000010422 painting Methods 0.000 abstract description 8
- 238000006116 polymerization reaction Methods 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 4
- 239000000057 synthetic resin Substances 0.000 abstract description 2
- 229920003002 synthetic resin Polymers 0.000 abstract description 2
- 239000002344 surface layer Substances 0.000 abstract 2
- 208000028659 discharge Diseases 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000006837 decompression Effects 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007870 radical polymerization initiator Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229930195735 unsaturated hydrocarbon Chemical class 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Coating Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は単一の塗料で各種の用途に応じた塗装鋼板を
製造する設備に関する．
（従来の技術）
塗装鋼板は家電、建材等広い分野で用いられている．そ
の用途によって求められる塗膜の特性（耐食性、耐候性
，酎疵付性、耐汚染性，耐薬品性，加工性）が異なって
くる．しかし、塗装鋼板の塗膜がこれらのすべての特性
を満たすことは極めて困難である．
このようａ″間居点を解消する技術として、たとえば特
開昭８０−１９０７３号公報で開示された技術がある．
この技術によれば，通常のカラー鋼板製造におけるよう
に亜鉛めっきコイルを連ｂＡ塗装し、焼付け硬化したの
ち，塗装表面を非酸化性雰囲気で低圧プラズマ放電重合
処理する．低圧プラズマ放電重合処理の結果、異なった
特性の皮膜が最表層に生じ、通常では相反する特性（た
とえば加工性に対しての耐疵付性、耐汚染性、耐薬品性
）を両立させることができる．
（発明が解決しようとする問題点）
塗装鋼板の特性に対する多様なニーズに応じて小ロット
多品種の製造を行なうためには，上記従来の塗装鋼板の
製造方法では要求される特性に適応する塗料を用いる必
要があった．したがって、異なった特性の塗讐鋼板を製
造するごとに塗装機洗浄、塗料替え、あるいは塗装機替
えをしなければならない．この塗装替え作業には多大の
時間と手間がかかり、非能率的であった．また、塗装機
洗浄作業はその性質上自動化が容易でない．なお、塗装
替えにによる設備休止の時間を短かくするために複数の
塗装設備をを設けることが考えられるが、これには莫大
な費用がかかる．この発明は上記のような問題点を解消
するためになされたもので、単一の塗料を用いて複数の
特性を有する塗料鋼板を作り分け，多様なニーズに応じ
た小ロット多品種の塗装鋼板の効率のよい製造設備を得
ることを目的としている．
Ｃ問題点を解決するための手段）
この発明の塗装鋼板の製造設備は、前処理装置および塗
装装置が順次配列されており、鋼帯に塗料を連続的に塗
布し，硬化して塗装鋼板を製造する．前記塗装装置に続
いて塗料を塗布した鋼帯の表面に電子線または紫外線を
照射して塗膜を硬化する電子線または紫外線照射処理装
置、およびプラズマ処理により塗膜の最表面層をさらに
硬化するプラズマ表面改質装置が配置されている．使用
する塗料は，紫外線または電子線照射によって硬化する
樹脂である．すなわち、１分子中にラジカル重合性二重
鮎合を２以上有する多官旋性モノマーまたはオリゴマー
を主要成分とする樹脂混合物，または飽和ポリエステル
などの分子中にラジカル重合性二重結合を有しない樹脂
をアクリレート化したものなどの放射線活性樹脂を含む
組成物である．また、紫外線照射により硬化する場合に
は、上記樹脂に過酸化ベンゾイル笠公知のラジカル重合
開始剤を含んだ組成物を用いることができる． 塗装装
置として、ロールコータ一方式、カーテンフローコータ
一方式、およびスプレー方式などのうちのいずれの方式
を用いてもよい．
プラズマ放電の方法についても特に制約はなく，静電容
量結合方式、マイクロ波方式、その他いずれの方式でも
よい．
塗装鋼板に求められる特性により電子線照射であれば照
射線量を，紫外線照射であれば照射出力を変更する．た
とえば、耐疵付性，耐汚染性よりも加工性を重視するの
であれば、塗膜硬化のエネルギーは低めにして、その後
に耐疵付性、耐汚染性を可濠な限り加工性と両立させる
という観点でプラズマ放電処理を行なう．プラズマ放電
処理用モノマーガスとして、悠和炭化水素系および不飽
和炭化水素系化合物、分子中にフッ素原子を含む化合物
や有機珪素化合物等が用いられ，特に制約はない．
（作用）
鋼帯に塗布した塗料に紫外線または電子線を照射すると
、塗料に含まれた合成樹脂の構成分子は励起されて重合
を生じ，塗料は硬化する．照射線の線賀および照射エネ
ルギー量に応じて重合が生じ、塗膜の特性は変化する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to equipment for manufacturing coated steel sheets for various uses using a single paint. (Conventional technology) Painted steel sheets are used in a wide range of fields such as home appliances and building materials. The required properties of the coating film (corrosion resistance, weather resistance, scratch resistance, stain resistance, chemical resistance, processability) differ depending on the application. However, it is extremely difficult for the coating film on painted steel sheets to satisfy all of these characteristics. As a technique for eliminating such a'' spacing, there is a technique disclosed in, for example, Japanese Patent Application Laid-Open No. 80-19073.
According to this technology, galvanized coils are coated with continuous bA coating as in normal color steel plate manufacturing, baked and hardened, and then the coated surface is treated with low-pressure plasma discharge polymerization in a non-oxidizing atmosphere. As a result of low-pressure plasma discharge polymerization treatment, films with different properties are formed on the outermost layer, making it possible to achieve properties that are normally contradictory (for example, workability, scratch resistance, stain resistance, and chemical resistance). can. (Problems to be Solved by the Invention) In order to manufacture a wide variety of products in small lots in response to various needs for the properties of coated steel sheets, the conventional method for producing coated steel plates described above requires the use of paints that are compatible with the required properties. It was necessary to use Therefore, it is necessary to clean the coating machine, change the paint, or change the coating machine every time coated steel sheets with different characteristics are manufactured. This repainting work took a lot of time and effort, and was inefficient. Furthermore, due to its nature, painting machine cleaning work is not easy to automate. It is possible to install multiple painting equipment in order to shorten the downtime due to painting changes, but this would require a huge amount of cost. This invention was made in order to solve the above-mentioned problems, and by using a single paint to create coated steel sheets with multiple characteristics, it is possible to produce coated steel sheets of various types in small lots to meet diverse needs. The aim is to obtain efficient manufacturing equipment. Means for Solving Problem C) The painted steel sheet manufacturing equipment of the present invention has a pretreatment device and a coating device arranged in sequence, and continuously applies paint to the steel strip and hardens it to form a painted steel sheet. Manufacture. Following the coating device, there is an electron beam or ultraviolet irradiation treatment device that irradiates the surface of the coated steel strip with electron beams or ultraviolet rays to harden the coating film, and further hardens the outermost layer of the coating film by plasma treatment. A plasma surface modification device is installed. The paint used is a resin that is cured by ultraviolet or electron beam irradiation. That is, resin mixtures whose main components are polyfunctional monomers or oligomers having two or more radically polymerizable double bonds in one molecule, or resins that do not have radically polymerizable double bonds in their molecules, such as saturated polyesters. This is a composition containing a radiation-active resin such as an acrylate of. In addition, in the case of curing by ultraviolet irradiation, a composition containing a known radical polymerization initiator in benzoyl peroxide Kasa can be used in the resin. As a coating device, any one of a roll coater, a curtain flow coater, and a spray method may be used. There are no particular restrictions on the method of plasma discharge, and any method such as capacitive coupling method, microwave method, etc. may be used. Depending on the characteristics required of the painted steel sheet, the irradiation dose is changed for electron beam irradiation, and the irradiation output is changed for ultraviolet irradiation. For example, if workability is more important than scratch resistance and stain resistance, the energy for curing the coating film should be lower, and then scratch resistance and stain resistance can be combined with workability to the extent possible. Plasma discharge treatment is performed from the viewpoint of As the monomer gas for plasma discharge treatment, relaxed hydrocarbon compounds, unsaturated hydrocarbon compounds, compounds containing fluorine atoms in the molecule, organic silicon compounds, etc. are used, and there are no particular restrictions. (Function) When the paint applied to the steel strip is irradiated with ultraviolet rays or electron beams, the constituent molecules of the synthetic resin contained in the paint are excited and polymerize, causing the paint to harden. Polymerization occurs and the properties of the coating change depending on the length of the radiation and the amount of energy irradiated.
塗料硬化後に塗膜表面をプラズマ表面改質処理すると、
塗膜の最表層部のみがさらに硬化する．これより、塗膜
の最表層部より内側の部分は加工性を保持したままであ
り，また最表層部は耐疵付性、耐汚染性および耐薬品性
を示す．
（実施例）
：ｊｔｌｌ図はこの実施例の塗装鋼板製造設備の構成図
である．
上塗塗装装置５までの！ｌｃ置は，通常の塗装鋼板製造
設備と同じ構成になっている．すなわち、アンコイラ
（図示しない）に続いて、脱脂水洗装置ｌおよびクロメ
ート処理装置２が配列されている．ついで、下塗（エボ
キシ樹脂塗料）塗装装置３，焼付炉４、および上塗（ポ
リエステルアクリレート系塗料）塗装装置５が順次配列
されている．
そして、上塗塗装装置５に続いて電子線照射処理装置８
および０２Ｆ６ガスをモノマーガスとしテ用いたプラズ
マ処理を行なうプラズマ表面改質装置９が配置されてい
る．
上記設備において，アンコイラ （図示しない）で巻戻
して送出した亜鉛めっき鋼帯を脱脂、水洗し、クロメー
ト処理する．ついで，ヱポ午シ樹脂塗料で下塗塗装し，
焼付炉４で焼付したのち、ポリエステルアクリレート系
塗料で上塗塗装する．そして、大気中で電子線を照射し
て塗料を硬化し，さらにＣ２Ｆ６ガス中でプラズマ処理
する．第２図は電子線照射処理装置８およびプラズマ表
面改質装１９の概略を示している．
電子線照射処理装置８はフィラメン｝ １２．陰極ｌ３
および陽極ｌ４で電子銃１１を構成し，フィラメン｝１
２には加熱電源ｌ７および高圧電源１８が接続されてい
る．また、陰極１３および陽極ｌ４には高圧電源１８が
接続されている．電子銃１１から放射された電子線Ｂは
レンズＴｉ．流電源１９によって励磁される磁気レンズ
１５によって鋼帯Ｓ上に焦点が合される．プラズマ表面
改質装置９は真空ポンプ２２により減圧される減圧室２
ｌを備えており、減圧室２ｌの鋼帯出入口にはそれぞれ
シーリング装置２３が設けられている．また、減圧室２
１内には高周波電圧電源２５に接続された電極２６およ
び導電ロール２７が配置されている．さらに、減圧室２
ｌに処理ガスを供給するガス供給装置２９が設けられて
いる．第１表は、鋼板を単一塗料で塗装し、塗装後の処
理条件を変えて特性が異なるように作り分けた塗装鋼板
例を示している．
この発明は上記実施例に限られるものではなく，たとえ
ば下塗塗料としてフェノール樹脂塗料，上塗塗料として
エポキシ樹脂塗料を用いてもよい．また、電子線を真空
中で照射してもよく、電子線の代わりに紫外線を照射し
てもよい．さらにまた、メタンガス中でプラズマ処理す
るようにしてもよい．
（発明の効果）
この発明によれば、電子線または紫外線を照射して塗膜
を硬化し，引き続いて低圧プラズマ表面改賀するので、
単一の塗料で多くの必要特性を持つ製品を作り分けるこ
とができる．したがって、作業時間の短縮および省力化
を図ることができ、生産性は向上する．また、多種少量
生産を行なうラインは塗装設備費を低減することができ
る．When the coating surface is subjected to plasma surface modification treatment after the coating has hardened,
Only the outermost layer of the paint film is further cured. This shows that the innermost part of the coating film retains its workability, and the outermost part exhibits scratch resistance, stain resistance, and chemical resistance. (Example): The diagram below is a configuration diagram of the painted steel plate manufacturing equipment of this example. Top coating equipment up to 5! The LC equipment has the same configuration as normal painted steel sheet manufacturing equipment. That is, uncoiler
(not shown), a degreasing and washing device 1 and a chromate treatment device 2 are arranged. Next, an undercoat (epoxy resin paint) coating device 3, a baking furnace 4, and a topcoat (polyester acrylate paint) coating device 5 are arranged in this order. Then, following the top coating device 5, an electron beam irradiation treatment device 8 is provided.
A plasma surface modification device 9 for performing plasma treatment using 02F6 gas as a monomer gas is also disposed. In the above equipment, the galvanized steel strip that is uncoiled and sent out by an uncoiler (not shown) is degreased, washed with water, and treated with chromate. Next, apply a primer coat with Eposhi resin paint,
After baking in baking oven 4, top coat with polyester acrylate paint. The paint is then cured by irradiating it with an electron beam in the atmosphere, and then subjected to plasma treatment in C2F6 gas. FIG. 2 schematically shows the electron beam irradiation treatment device 8 and plasma surface modification device 19. The electron beam irradiation processing device 8 is a filament} 12. cathode l3
The electron gun 11 is composed of the anode l4 and the anode l4, and the filament}1
2 is connected to a heating power source 17 and a high voltage power source 18. Further, a high voltage power supply 18 is connected to the cathode 13 and the anode l4. The electron beam B emitted from the electron gun 11 passes through the lens Ti. A magnetic lens 15 excited by a current power source 19 focuses on the steel strip S. The plasma surface modification device 9 includes a decompression chamber 2 that is depressurized by a vacuum pump 22.
A sealing device 23 is provided at each steel strip entrance and exit of the decompression chamber 2l. In addition, the decompression chamber 2
1, an electrode 26 connected to a high frequency voltage power source 25 and a conductive roll 27 are arranged. Furthermore, the decompression chamber 2
A gas supply device 29 is provided for supplying processing gas to l. Table 1 shows examples of coated steel plates in which steel plates are painted with a single paint and the treatment conditions after painting are changed to create different properties. The present invention is not limited to the above embodiments; for example, a phenol resin paint may be used as the undercoat and an epoxy resin paint may be used as the top coat. Further, the electron beam may be irradiated in a vacuum, or ultraviolet rays may be irradiated instead of the electron beam. Furthermore, plasma treatment may be performed in methane gas. (Effects of the Invention) According to the present invention, the coating film is cured by irradiation with electron beams or ultraviolet rays, and then the surface is treated with low pressure plasma.
It is possible to create products with many required characteristics using a single paint. Therefore, it is possible to shorten working time and save labor, improving productivity. Additionally, lines that produce a wide variety of products in small quantities can reduce painting equipment costs.
ｍｌ図はこの発明の一叉施例を示すもので、塗装鋼板製
造設備の構成図、および第２図は電子線照射装置および
プラズマ放電翅理装置の概略図である．ml diagram shows one embodiment of the present invention, and is a block diagram of a painted steel plate manufacturing facility, and FIG. 2 is a schematic diagram of an electron beam irradiation device and a plasma discharge grinding device.
Claims (1)
を連続的に塗布し、硬化して塗装鋼板を製造する設備に
おいて、前記塗装装置に続いて塗料を塗布した鋼帯の表
面に電子線または紫外線を照射して塗膜を硬化する電子
線または紫外線照射処理装置、およびプラズマ処理によ
り塗膜の最表面層をさらに硬化するプラズマ表面改質装
置を配置したことを特徴とする塗装鋼板の製造設備。In a facility in which a pretreatment device and a coating device are arranged in sequence to continuously apply paint to a steel strip and harden it to produce a coated steel plate, following the coating device, an electron beam is applied to the surface of the steel strip coated with the paint. Alternatively, manufacture of a coated steel sheet characterized in that it is equipped with an electron beam or ultraviolet irradiation treatment device that hardens the coating film by irradiating it with ultraviolet rays, and a plasma surface modification device that further hardens the outermost layer of the coating film through plasma treatment. Facility.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15143086A JPS637872A (en) | 1986-06-30 | 1986-06-30 | Equipment for making painted steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15143086A JPS637872A (en) | 1986-06-30 | 1986-06-30 | Equipment for making painted steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS637872A true JPS637872A (en) | 1988-01-13 |
Family
ID=15518442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15143086A Pending JPS637872A (en) | 1986-06-30 | 1986-06-30 | Equipment for making painted steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS637872A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5969281A (en) * | 1996-06-03 | 1999-10-19 | Yamaha Corporation | Holder for musical instrument |
-
1986
- 1986-06-30 JP JP15143086A patent/JPS637872A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5969281A (en) * | 1996-06-03 | 1999-10-19 | Yamaha Corporation | Holder for musical instrument |
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