JP4858930B2 - How to repaint extruded concrete roof tiles - Google Patents
How to repaint extruded concrete roof tiles Download PDFInfo
- Publication number
- JP4858930B2 JP4858930B2 JP2000394713A JP2000394713A JP4858930B2 JP 4858930 B2 JP4858930 B2 JP 4858930B2 JP 2000394713 A JP2000394713 A JP 2000394713A JP 2000394713 A JP2000394713 A JP 2000394713A JP 4858930 B2 JP4858930 B2 JP 4858930B2
- Authority
- JP
- Japan
- Prior art keywords
- concrete roof
- extruded concrete
- roof tiles
- slurry layer
- roof tile
- 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 - Fee Related
Links
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- Aftertreatments Of Artificial And Natural Stones (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は、押出成型コンクリート瓦の塗替方法に関する。
【０００２】
【従来の技術】
一般にモニエル瓦、あるいはスカンジナビア瓦と呼ばれているセメント系瓦がある。セメント系瓦は、セメントモルタルを主原料とする瓦であるが、その製造プロセスにより押出成型コンクリート瓦と厚型スレートとに分類される。
【０００３】
押出成型コンクリート瓦は、セメントモルタルを金型に投入し、乾式押し出し方式により成型し、コンクリートと同質の無機質着色剤を用いて１ｍｍ以上の塗膜を形成し、基材と一体化させた塗膜構造により長期にわたり色を保持することができる。
【０００４】
一方厚型スレートは、セメントモルタルを加圧成型し、養生乾燥後に塗料により表面を着色されたものであり、塗膜の耐久性や色の保持力については、塗装する塗料の樹脂の種類等に依存している。
【０００５】
押出成型コンクリート瓦の場合、長期の経時劣化によりスラリー層が脆弱になると、表面が斑になってしまう。このような状態において塗替をしようとすれば、旧スラリー層を除去しなければならないが、完全に除去することは困難であるため、残存するスラリー層が、塗替後の塗膜欠陥の原因となってしまうことがある。
【０００６】
【発明が解決しようとする課題】
そこで本発明は、従来困難であった乾式押出成型コンクリート瓦の塗替方法を開発することを課題とする。
【０００７】
【課題を解決するための手段】
かかる課題を解決せんとして、本発明者は鋭意研究の結果、押出成型コンクリート瓦の表面に強靭な連続塗膜を形成せんとする従来の塗装方法を改め、スラリー層に着目して層全体を染色することによる塗装方法を開発したものであり、本発明の要旨は、以下に存する。
【０００８】
乾式押出成型コンクリート瓦の塗替方法であって、旧塗膜をケレン作業により除去し、該瓦のスラリー層に浸透性のある着色剤により、連続塗膜を形成することなくスラリー層全体を染色し、その表面に合成樹脂塗料により玉吹き塗装することによって、非連続塗膜を形成してなることを特徴とする押出成型コンクリート瓦の塗替方法。
【０００９】
本発明になる押出成型コンクリート瓦の塗替方法は、瓦表面に連続塗膜を形成することではなく、スラリー層を浸透性のある着色剤により着色するという点に特徴を有する。
【００１０】
浸透性のある着色剤としては、着色剤を加えた合成樹脂や、染料が例示でき、セメントスラリー層への浸透性、親和性、耐候性、耐水性の高いものであれば、いずれの着色剤でも使用できる。染料の種類としては、その性質、使用方法によって、様々な染料があるが、上記の様な特性を持つものであれば、特に限定無く使用できる。
【００１１】
直接染料として、ダイレクトスカーレット、コンゴーレッド等が例示できる。酸性染料として、メタニルイエロー、ニグロシン、アシッドファーストレッド、アシッドオレンジ等が例示できる。塩基性染料として、ローダミン、ビスマルクグリーン、マラカイトグリーン、メチレンブルー、メチルバイオレット等が例示できる。媒染染料として、モルダントレッド等が例示できる。酸性媒染染料として、モルダントブラック等が例示できる。バット染料として、バットブルー等が例示できる。分散染料としてディスパースオレンジ、ディスパースレッド、ディスパースバイオレット等が例示できる。反応染料として、リアクティブレッド等が例示できる。蛍光増白染料として、フルオレッセントブライテナー等が例示できる。その他、ナフトール染料、硫化染料、油脂性染料等の種類があるが、瓦の塗色には様々なニーズがあるため、使用する染料も多くの色を用意することが好ましい。
【００１２】
押出成型コンクリート瓦の塗替のための、着色剤の染色方法としては、浸漬、スプレー、刷毛塗り等、従来公知の方法が使用でき、特に限定されない。
【００１３】
なお、希望に応じて瓦表面に模様を付けることも可能である。この場合染料等の着色剤により着色されたスラリー層の上に、合成樹脂塗料をリシンガン等の塗装機を用いて、玉吹き塗装を行ない、連続塗膜を形成しないことが好ましい。合成樹脂塗料としてはエポキシ樹脂、アクリル樹脂、ポリウレタン樹脂、フッ素樹脂、エチレン−酢酸ビニル共重合体樹脂等の樹脂を使用した塗料が使用できる。
【００１４】
本発明による塗替方法を実施しようとする場合には、旧塗膜をケレン作業により剥離して後、本発明を実施することが必要である。また、押出成型コンクリート瓦の製品製造工程に使用することも可能であり、その場合には成型養生後に染色を実施する。
【００１５】
【発明の実施の形態】
本発明の理解に供するため、以下に実施例を記載する。いうまでもなく、本発明は以下の実施例に限定されるものではない。
【００１６】
【実施例１】
施工後１５年を経過した押出成型コンクリート瓦の旧塗膜を、ワイヤーブラシによるケレン作業により除去し、該押出成型コンクリート瓦の
スラリー層全体にバットブルーを使用して、青色に着色した押出成型コンクリート瓦１を得た。
【００１７】
【実施例２】
施工後１５年を経過した押出成型コンクリート瓦の旧塗膜を、ワイヤーブラシによるケレン作業により除去し、該押出成型コンクリート瓦の
スラリー層全体にコンゴーレッドを使用して、赤色に着色した後、アクリル樹脂塗料をリシンガンにより瓦表面に玉吹き塗装を施し、表面に模様を形成した押出成型コンクリート瓦２を得た。
【００１８】
【実施例３】
施工後１５年を経過した押出成型コンクリート瓦の旧塗膜を、ワイヤーブラシによるケレン作業により除去し、該押出成型コンクリート瓦の
スラリー層全体にメチレンブルーを使用して、青色に着色した押出成型コンクリート瓦３を得た。
【００１９】
【試験方法】
押出成型コンクリート瓦１〜３を、促進耐候性試験機に入れ、サイクル試験を行なった。
【００２０】
【結果】
押出成型コンクリート瓦１〜３はいずれも退色はなく、またスラリー層全体が着色されているため、表面を物理的に削りとっても、下層も同じ色を示し、見栄えに影響はなかった。
【００２１】
【発明の効果】
本発明になる塗替方法によれば、瓦表面には連続塗膜が形成されずにスラリー層全体が着色されるため、長期の経時劣化後にスラリー層が脆くなったとしても、部分的な脱色による斑模様の発生はなく、かつ、表面に意匠性を有する模様塗膜を付着させた場合にも、表面は連続塗膜ではないため美観の維持に非常に有効である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for repainting extruded concrete roof tiles.
[0002]
[Prior art]
There is a cement roof tile generally called Moniel roof tile or Scandinavian roof tile. Cement-based roof tiles are roof tiles mainly made of cement mortar, but are classified into extruded concrete roof tiles and thick slate depending on the manufacturing process.
[0003]
Extruded concrete roof tile is cement mortar put into a mold, molded by dry extrusion method, formed a coating film of 1mm or more using an inorganic colorant of the same quality as concrete, and a coating film integrated with the base material The structure can keep the color for a long time.
[0004]
Thick slate, on the other hand, is obtained by molding cement mortar under pressure and coloring the surface with paint after curing and drying. The durability and color retention of the paint film depend on the type of resin used in the paint to be applied. It depends.
[0005]
In the case of extruded concrete roof tiles, if the slurry layer becomes brittle due to long-term deterioration, the surface becomes uneven. If repainting is attempted in such a state, the old slurry layer must be removed, but it is difficult to remove completely, so the remaining slurry layer is the cause of coating film defects after repainting. It may become.
[0006]
[Problems to be solved by the invention]
Then, this invention makes it a subject to develop the repainting method of the dry extrusion-molded concrete roof which was difficult conventionally.
[0007]
[Means for Solving the Problems]
As a result of diligent research, the present inventor has changed the conventional coating method that forms a tough continuous coating film on the surface of extruded concrete roof tiles, focusing on the slurry layer and dyeing the entire layer. The gist of the present invention is as follows.
[0008]
This is a method of repainting dry extrusion concrete roof tiles, removing old paint film by keren work, and dyeing the entire slurry layer without forming a continuous paint film with a colorant that is permeable to the slurry layer of the roof tile. A method for recoating an extruded concrete roof tile, characterized in that a discontinuous coating film is formed on the surface by spraying with a synthetic resin paint.
[0009]
The method for repainting an extruded concrete roof tile according to the present invention is characterized in that the slurry layer is colored with a penetrating colorant rather than forming a continuous coating film on the roof surface.
[0010]
Examples of the penetrating colorant include synthetic resins and dyes to which a colorant is added, and any colorant can be used as long as it has high penetrability, affinity, weather resistance, and water resistance to the cement slurry layer. But you can use it. There are various types of dyes depending on their properties and usage, but any dye having the above properties can be used without particular limitation.
[0011]
Examples of the direct dye include direct scarlet and congo red. Examples of the acid dye include metanil yellow, nigrosine, acid first red, and acid orange. Examples of basic dyes include rhodamine, bismarck green, malachite green, methylene blue, methyl violet and the like. Examples of mordant dyes include mold red. Examples of the acid mordant dye include mold black. Examples of the vat dye include vat blue. Examples of the disperse dye include disperse orange, disperse thread, and disperse violet. Examples of reactive dyes include reactive red. Examples of fluorescent whitening dyes include fluorescent brighteners. In addition, there are various types such as naphthol dyes, sulfur dyes, and oily dyes. However, since there are various needs for the color of the roof tile, it is preferable to prepare many colors for the dyes to be used.
[0012]
As a dyeing method of the colorant for repainting the extruded concrete roof tile, a conventionally known method such as dipping, spraying, brushing, or the like can be used, and it is not particularly limited.
[0013]
It is also possible to apply a pattern to the tile surface as desired. In this case, it is preferable not to form a continuous coating film on the slurry layer colored with a colorant such as a dye by performing a blown coating with a synthetic resin paint using a coating machine such as a lysing gun. As the synthetic resin paint, a paint using a resin such as an epoxy resin, an acrylic resin, a polyurethane resin, a fluororesin, or an ethylene-vinyl acetate copolymer resin can be used.
[0014]
When the repainting method according to the present invention is to be carried out, it is necessary to carry out the present invention after the old coating film has been peeled off by the keren operation. Moreover, it is also possible to use it for the product manufacturing process of an extrusion-molded concrete roof tile, and in that case, it dyes after molding curing.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
In order to provide an understanding of the present invention, examples are described below. Needless to say, the present invention is not limited to the following examples.
[0016]
[Example 1]
Extruded concrete tiles that have been used for 15 years after construction are removed by a keel work with a wire brush, and the entire slurry layer of the extruded concrete roof tiles is bat blue and colored in blue. A tile 1 was obtained.
[0017]
[Example 2]
The old paint film of extruded concrete roof tiles that has passed 15 years after construction is removed by a keel work with a wire brush, and the entire slurry layer of the extruded concrete roof tile is colored red using congo red, then acrylic The resin paint was blown onto the surface of the roof tile with a lysing gun to obtain an extruded concrete roof tile 2 with a pattern formed on the surface.
[0018]
[Example 3]
Extruded concrete roof tiles that have been used for 15 years after construction are removed by a keel work using a wire brush, and the entire slurry layer of the extruded concrete roof tiles is methylene blue and colored in blue. 3 was obtained.
[0019]
【Test method】
Extruded concrete roof tiles 1 to 3 were placed in an accelerated weathering tester and subjected to a cycle test.
[0020]
【result】
None of the extruded concrete roof tiles 1 to 3 were discolored, and the entire slurry layer was colored. Therefore, even if the surface was physically scraped, the lower layer showed the same color and the appearance was not affected.
[0021]
【Effect of the invention】
According to the repainting method of the present invention, since the entire slurry layer is colored without forming a continuous coating film on the tile surface, even if the slurry layer becomes brittle after long-term deterioration, partial decolorization In addition, when a pattern coating having a design property is attached to the surface, the surface is not a continuous coating, and thus it is very effective for maintaining the aesthetic appearance.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000394713A JP4858930B2 (en) | 2000-12-26 | 2000-12-26 | How to repaint extruded concrete roof tiles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000394713A JP4858930B2 (en) | 2000-12-26 | 2000-12-26 | How to repaint extruded concrete roof tiles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002193687A JP2002193687A (en) | 2002-07-10 |
| JP4858930B2 true JP4858930B2 (en) | 2012-01-18 |
Family
ID=18860298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000394713A Expired - Fee Related JP4858930B2 (en) | 2000-12-26 | 2000-12-26 | How to repaint extruded concrete roof tiles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4858930B2 (en) |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51142827A (en) * | 1975-06-02 | 1976-12-08 | Hiroshi Ishizuka | Colored natural stone plate and its preparation method |
| JPS52148522A (en) * | 1976-06-07 | 1977-12-09 | Masami Ono | Granular*colored foam concrete and production thereof |
| JPS54155217A (en) * | 1978-05-30 | 1979-12-07 | Sumitomo Cement Co | Coloring lime stone based natural stones |
| JPS5879889A (en) * | 1982-10-21 | 1983-05-13 | 株式会社クボタ | Manufacture of dressing cement products |
| JP2505387B2 (en) * | 1986-03-05 | 1996-06-05 | 日本ペイント株式会社 | Emulsion coating method |
| JPH0489374A (en) * | 1990-07-27 | 1992-03-23 | Washi Chuetsu Board Kk | Impregnating and coloring method for ceramics-based base material and decorative laminated sheet produced by this method |
| JP2507169B2 (en) * | 1990-10-31 | 1996-06-12 | 積水化学工業株式会社 | tile |
| JP2940568B2 (en) * | 1991-05-29 | 1999-08-25 | 積水化学工業株式会社 | tile |
| JPH05129767A (en) * | 1991-11-07 | 1993-05-25 | Sharp Corp | Printed wiring board |
| JPH05171054A (en) * | 1991-12-25 | 1993-07-09 | Tokyo Gas Co Ltd | Synthesis of organic coloring agent |
| JPH0827947A (en) * | 1994-07-19 | 1996-01-30 | Asahi Kasei Jiyuuken Kk | Coated panel with pattern and manufacture thereof |
| JP3739451B2 (en) * | 1995-10-18 | 2006-01-25 | 株式会社ニッコー化学研究所 | Coloring material for concrete |
| JPH11140378A (en) * | 1997-11-14 | 1999-05-25 | Kansai Paint Co Ltd | High-build heat insulation coating material and work for coating insulation therewith |
| JPH11192611A (en) * | 1998-01-05 | 1999-07-21 | Nihon Kogyo Co Ltd | Colored concrete block and coloring method for concrete block |
-
2000
- 2000-12-26 JP JP2000394713A patent/JP4858930B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002193687A (en) | 2002-07-10 |
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