JPS5843360B2 - How to paint architectural boards - Google Patents
How to paint architectural boardsInfo
- Publication number
- JPS5843360B2 JPS5843360B2 JP52015808A JP1580877A JPS5843360B2 JP S5843360 B2 JPS5843360 B2 JP S5843360B2 JP 52015808 A JP52015808 A JP 52015808A JP 1580877 A JP1580877 A JP 1580877A JP S5843360 B2 JPS5843360 B2 JP S5843360B2
- Authority
- JP
- Japan
- Prior art keywords
- cement board
- paint
- painting
- coating
- asbestos cement
- 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
Links
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Description
【発明の詳細な説明】 この発明は建築用板の塗装方法に関するものである。[Detailed description of the invention] This invention relates to a method of painting architectural boards.
石綿セメント板のような含水率が３悌以上の建築用板の
塗装は、従来から２液性ポリウレタン塗料によって塗装
されていた。Architectural boards with a moisture content of 3 degrees or more, such as asbestos-cement boards, have traditionally been painted with two-component polyurethane paints.
ところがこの場合、建築用板の内部から逃散する水分に
よって塗膜が害されて美観が損なわれ、かつその水分に
よって塗装作業も害され塗装時間が長くなるという問題
があった。However, in this case, there are problems in that the moisture escaping from inside the architectural board damages the paint film, impairing its aesthetic appearance, and the moisture also impairs the painting process, prolonging the painting time.
したがって、この発明の目的は、塗膜が美しく、かつ塗
装時間を短縮することができる建築用板の塗装方法を提
供することである。Therefore, an object of the present invention is to provide a method for coating architectural boards that provides a beautiful coating and can shorten the coating time.
この発明の塗装方法の一実施例を図面を参照して説明す
る。An embodiment of the coating method of the present invention will be described with reference to the drawings.
すなわち、少なくとも一面に、成形金型またはエンボス
ローラによって凹凸模様が形成されている石綿セメント
板１は、コンベヤ２により裏面塗装装置３に送り込まれ
る。That is, an asbestos cement board 1 on which an uneven pattern is formed on at least one surface by a molding die or an embossing roller is sent to a backside coating device 3 by a conveyor 2.
この裏面塗装装置３は、塗液槽４、ポンプ５、塗料噴射
口６、一対の塗装ロール７からなり、石綿セメント板１
の裏面にＳＢＲ水性エマルジョン塗料を塗装する。This back coating device 3 consists of a coating liquid tank 4, a pump 5, a paint injection port 6, and a pair of coating rolls 7.
Apply SBR water-based emulsion paint to the back side.
裏面塗装を終えた石綿セメント板１は、一対の絞りロー
ル８の間で余剰のＳＢＲ水性エマルジョン塗料を絞り取
られ、予熱乾燥機９内に送り込まれる。The asbestos cement board 1 whose back surface has been painted has excess SBR water-based emulsion paint squeezed out between a pair of squeezing rolls 8, and is sent into a preheating dryer 9.
この予熱乾燥機９内は、熱風により温度１７０〜２８０
０Ｃに保たれていて、送り込まれた石綿セメント板１の
表面温度を４０’Ｃ以上に高めるようになっている。The inside of this preheating dryer 9 has a temperature of 170 to 280 due to hot air.
The temperature is maintained at 0C, and the surface temperature of the asbestos cement board 1 is raised to 40'C or higher.
予熱乾燥機９内で表面温度が４０℃以上に高められた石
綿セメント板１は、つぎに下塗りカーテンフローコータ
１０で表面下塗り塗装される。The asbestos cement board 1, whose surface temperature has been raised to 40° C. or higher in the preheating dryer 9, is then subjected to surface undercoating using an undercoating curtain flow coater 10.
このカーテンフローコータ１０は、塗液槽１１、ポンプ
１２、フィルタ１３、ヘッド１４からなり、ヘッド１４
から塗料をカーテン状に垂下させて塗装するようになっ
ている。This curtain flow coater 10 consists of a coating liquid tank 11, a pump 12, a filter 13, and a head 14.
The paint is applied by letting the paint drip down like a curtain.
ここで用いられる塗料は、硬化時間が１時間程度の速硬
性ポリウレタン塗料、すなわちポリオールのエナメル塗
料と速硬性のポリイソシアネート化合物硬化合物硬化剤
（たとえばキシレンジイソシアネートを主成分とするコ
ロホー１１１日本ポリウレタン社製）が用いられる。The paint used here is a fast-curing polyurethane paint with a curing time of about 1 hour, that is, a polyol enamel paint and a fast-hardening polyisocyanate compound curing agent (for example, Coroho 111 made by Nippon Polyurethane Co., Ltd. whose main component is xylene diisocyanate). ) is used.
この場合、予熱乾燥機９により石綿セメント板１が加熱
されて含水率が低下するとともに、セメント板１表面の
水分が逃散しているため、水分による塗料の硬化が阻害
されず塗膜の形成が円滑に行なわれる。In this case, the asbestos cement board 1 is heated by the preheating dryer 9 and its moisture content is reduced, and the moisture on the surface of the cement board 1 is escaping, so that the hardening of the paint is not inhibited by moisture and the formation of a paint film is prevented. It is done smoothly.
また、セメント板１の表面温度が４０℃と高いため、塗
膜はセメント板１表面に接触している下層から硬化を開
始し次第に上層へ向って硬化が進む。Furthermore, since the surface temperature of the cement board 1 is as high as 40° C., the coating film starts to harden from the lower layer in contact with the surface of the cement board 1 and gradually progresses toward the upper layer.
そのため、塗料用溶剤が塗膜内に残って塗膜を害するこ
ともない。Therefore, the paint solvent will not remain in the coating film and will not damage the coating film.
表面下塗り塗装を終えた石綿セメント板１は、つぎに端
面塗装カーテンコータ１５で端面に塗料を噴射塗装され
る。The asbestos cement board 1, which has been subjected to the surface undercoating, is then spray-painted on the end face by an end face painting curtain coater 15.
端面塗装コータ１５で端面塗装されたセメント板１は、
上塗りカーテンフローコータ１６で表面上塗り塗装され
る。The cement board 1 whose end surface was coated with the end surface coating coater 15 is
A top coat is applied to the surface by a top coat curtain flow coater 16.
この上塗りカーテンフローコータ１６は、下塗りカーテ
ンフローコータ１０と同様に構成されている。This top coat curtain flow coater 16 is configured similarly to the undercoat curtain flow coater 10.
この上塗りカーテンフローコータ１６で用いられる塗料
は硬化時間が約２時間の遅硬化ポリウレタン塗料、すな
わちポリオールのクリア塗料またはポリオールのエナメ
ル塗料と遅硬性のポリイソシアネート化合物硬化剤（た
とえばトリメチロールプロパンとジイソシアネートとの
反応物を主成分とするデスモジュールＮ１住友バイエル
社製）が用いられる。The paint used in this top coat curtain flow coater 16 is a slow-curing polyurethane paint with a curing time of about 2 hours, that is, a polyol clear paint or a polyol enamel paint, and a slow-hardening polyisocyanate compound curing agent (for example, trimethylolpropane and diisocyanate). Desmodur N1 (manufactured by Sumitomo Bayer), which contains a reactant as a main component, is used.
上塗りを終えたセメント板１は、セツティングコンベヤ
１７に送られ、ここで上塗り塗膜が均一化される。The cement board 1 that has been topcoated is sent to a setting conveyor 17, where the topcoat film is made uniform.
ついでセメント板１は、最終乾燥機１７内のウィケット
式コンベヤ１８上に載せられ７０〜１００℃の熱風によ
り乾燥させられる。The cement board 1 is then placed on a wicket conveyor 18 in a final dryer 17 and dried with hot air at 70 to 100°C.
熱風が１００℃を超えると、セメント板１内に残留した
水分の逃散作用が激しくなり、塗膜が害される。If the temperature of the hot air exceeds 100°C, the moisture remaining in the cement board 1 will escape more intensely, damaging the coating film.
この最終乾燥工程において、セメント板１の裏面に形成
された塗膜により、セメント板１の裏面からの水分の蒸
発が防げられ、蒸発水分による表面塗膜の劣化が防がれ
るとともに、セメント板１の反りの発生も防がれる。In this final drying process, the coating film formed on the back surface of the cement board 1 prevents moisture from evaporating from the back surface of the cement board 1, and prevents deterioration of the surface coating film due to evaporated moisture. The occurrence of warping is also prevented.
このようにして石綿セメント板１の塗装が完了する。In this way, painting of the asbestos cement board 1 is completed.
なお、実施例は、石綿セメント板１の裏面塗装を予熱乾
燥工程の前で行なっているが、裏面塗装に溶剤系塗料を
用いるときは、予熱乾燥工程の後で裏面塗装をしてもよ
い。In the example, the back side of the asbestos cement board 1 is painted before the preheating and drying process, but when a solvent-based paint is used for backside painting, the back side may be painted after the preheating and drying process.
以上のように、この発明の建築用板の塗装方法は、含水
率３重量饅以上の石綿セメント板に裏面塗装したのち、
少なくとも表面を加熱乾燥し、その状態で速硬性ポリウ
レタン塗料を表面下塗り塗装し、ついで遅硬性ポリウレ
タン塗料で表面上塗り塗装し、乾燥するため、塗膜が円
滑に形成され塗装時間が短縮されるとともに塗膜も美し
くなる。As described above, the method for painting architectural boards of the present invention involves coating the back side of an asbestos cement board with a moisture content of 3 weight or more, and then
At least the surface is heated and dried, then a fast-curing polyurethane paint is applied as an undercoat to the surface, and then a slow-hardening polyurethane paint is applied to the surface and then dried, so the coating film is formed smoothly and the coating time is shortened. The film also becomes beautiful.
また、前記石綿セメント板の両面を塗装することにより
、石綿セメント板からの水分の蒸発が防がれるため、乾
燥の際の蒸発水分による塗膜の劣化を防止することがで
きる。Moreover, by painting both sides of the asbestos cement board, evaporation of water from the asbestos cement board is prevented, so deterioration of the coating film due to evaporated water during drying can be prevented.
また、前記石綿セメント板の少なくとも一面に凹凸模様
を形成したときは、石綿セメント板に深み（立体感）が
あられれ、美観が一層高まる。Further, when an uneven pattern is formed on at least one surface of the asbestos cement board, the asbestos cement board has depth (three-dimensional effect) and its aesthetic appearance is further enhanced.
図面はこの発明の塗装方法の一実施例の工程説明図であ
る。
１・・・石綿セメント板、３・・・裏面塗装装置、９・
・・予熱乾燥機、１０・・・下塗りカーテンフローコー
タ。The drawings are process explanatory diagrams of one embodiment of the coating method of the present invention. 1... Asbestos cement board, 3... Back coating device, 9...
...Preheat dryer, 10...Undercoat curtain flow coater.
Claims (1)
たのち、少なくとも表面を加熱乾燥し、その状態で速硬
性ポリウレタン塗料を表面下塗り塗装し、ついで遅硬性
ポリウレタン塗料で表面上塗り塗装し乾燥することを特
徴とする建築用板の塗装方法。 ２ 前記石綿セメント板の少なくとも一面に凹凸模様が
形成されている特許請求の範囲第１項記載の建築用板の
塗装方法。[Scope of Claims] 1. After painting the back side of an asbestos cement board with a water content of 3 weight width or more, at least the surface is heated and dried, and in that state, a fast-setting polyurethane paint is applied as an undercoat to the surface, and then the surface is coated with a slow-hardening polyurethane paint. A method for painting architectural boards, which is characterized by applying a top coat and drying it. 2. The method of painting a building board according to claim 1, wherein a concavo-convex pattern is formed on at least one surface of the asbestos cement board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52015808A JPS5843360B2 (en) | 1977-02-15 | 1977-02-15 | How to paint architectural boards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52015808A JPS5843360B2 (en) | 1977-02-15 | 1977-02-15 | How to paint architectural boards |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS53101017A JPS53101017A (en) | 1978-09-04 |
| JPS5843360B2 true JPS5843360B2 (en) | 1983-09-26 |
Family
ID=11899136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP52015808A Expired JPS5843360B2 (en) | 1977-02-15 | 1977-02-15 | How to paint architectural boards |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5843360B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54160426A (en) * | 1978-06-08 | 1979-12-19 | Kazuhiko Tanizaki | Pretreatment for painting cement roof tile |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5134855A (en) * | 1974-09-19 | 1976-03-24 | Riken Keikinzoku Kogyo Kk | ARUMINIUMUGOKINGATAZAI NO OSHIDASHISEIKEIHO NARABINI SONOSOCHI |
-
1977
- 1977-02-15 JP JP52015808A patent/JPS5843360B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5134855A (en) * | 1974-09-19 | 1976-03-24 | Riken Keikinzoku Kogyo Kk | ARUMINIUMUGOKINGATAZAI NO OSHIDASHISEIKEIHO NARABINI SONOSOCHI |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS53101017A (en) | 1978-09-04 |
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