JPH02243577A - Method for decorating cement panel - Google Patents

Method for decorating cement panel

Info

Publication number
JPH02243577A
JPH02243577A JP6310189A JP6310189A JPH02243577A JP H02243577 A JPH02243577 A JP H02243577A JP 6310189 A JP6310189 A JP 6310189A JP 6310189 A JP6310189 A JP 6310189A JP H02243577 A JPH02243577 A JP H02243577A
Authority
JP
Japan
Prior art keywords
sand
cement
particle size
granule size
average granule
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
Application number
JP6310189A
Other languages
Japanese (ja)
Other versions
JPH0521872B2 (en
Inventor
Masaki Kobayashi
正樹 小林
Yuzo Sakaguchi
坂口 勇三
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP6310189A priority Critical patent/JPH02243577A/en
Publication of JPH02243577A publication Critical patent/JPH02243577A/en
Publication of JPH0521872B2 publication Critical patent/JPH0521872B2/ja
Granted legal-status Critical Current

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Landscapes

  • Aftertreatments Of Artificial And Natural Stones (AREA)

Abstract

PURPOSE:To remove monotone feeling of a cement panel and improve adhesion strength and matte effect thereby by applying a resin coating to the surface of cement panel and successively scattering sands ranging from sand having large average granule size to sand having small average granule size thereon. CONSTITUTION:A weather resistant resin coating (e.g. acrylic water based emulsion) being 20-30sec in viscosity at 20 deg.C using IWATA cup (#4) and having base color is applied to the surface of a cement panel 1 obtained by applying surface emboss processing to a cement or punching a cement in shape of roof tile and curing the treated cement and sands colored in desired color before the coating 2 is cured and ranging from sand 3 having large average granule size of about 0.5mm to sand 4 having small average granule size of about 0.1mm are successively scattered thereon and then the coating layer is baked to form the decorative panel.

Description

【発明の詳細な説明】[Detailed description of the invention] 【産業上の利用分野】[Industrial application field]

本発明は平板瓦のようなセメント板の化粧方法に関する
The present invention relates to a method for decorating cement boards such as flat roof tiles.

【従来の技術】[Conventional technology]

従来より、セメント板に樹脂塗料を塗布し、次いでカラ
ー砂を散布して化粧が施されている。
Conventionally, cement boards are decorated by applying resin paint and then scattering colored sand.

【発明が解決しようとする課題1 従来にあっては、砂の粒径は均一であり、しかも均一に
散布していたので、仕上がり感が単調になってしまって
いた。 この単調感をなくすため、樹脂塗料2が硬化する前に粒
径の異なる砂3、4を混合して散布されているが、この
場合にあっては粒径の大きい砂が固着しにくくなってし
まい、樹脂塗料2を増やすと1@2図に示すように粒径
の小さい砂4が化粧層5の塗膜に埋もれてしまい粒径の
小さい砂4による艶消し効果が損なわれてしまうもので
ある。 本発明は上記問題点を解決するために為されたものであ
り、その目的とするところは、単調感をなくし、しかも
、粒径の小さい砂が埋もれてしまうことなく艶消し効果
を発揮させることができるセメント板の化粧方法を提供
することにある。 [!題を解決するための手段】 本発明のセメント板の化粧方法は、セメント板1の表面
に樹脂塗料2を塗布した後樹脂塗料2が硬化する前に平
均粒径の大きい砂3から小さい砂4を順次散布すること
を特徴とするものであり、この構成により上記課題が解
決されたものである。 [作用1 樹脂塗料2が硬化する前に平均粒径の大きい砂3から小
さい砂4を順次散布するので、粒径の大きい砂は樹脂塗
料2の塗膜への食い込みが大きくなって固着強度が大き
くなるものであり、しかも粒径の小さい砂は時間遅れで
散布するので樹脂塗料2の硬化がある程度進んだ状態で
散布することになり、樹脂塗料2の塗膜への適当な食い
込みが得られるものであり、砂の粒径に応じた固着力と
なって、所望の外観を呈するものである。 本発明におけるセメント板1とは、普通ポルトランドセ
メント、早強ポルトランドセメント、中庸ポルトランド
セメントなどの単味ポルトランドセメント、混合ポルト
ランドセメント、アルミナセメント、マグネシアセメン
トなどの特殊セメント等のセメントlこつオラストナイ
ト、マイカ、セピオライト等の充填材とバルブ、ビニロ
ンのような有機繊維と石綿、岩綿のような無1’j!繊
維を配合シ、所望によりリグニンスルホン酸、ホルマリ
ン縮合物などの撥水剤その他混和材料が配合され適量の
水を加えて調製されたセメントスラリーから長網式抄造
機などにより抄造され、養生硬化されたものである。 このセメント板1は抄造後にプレスで表面エンボス加工
を施したり、瓦形状に打ち抜いたりした後養生される。 このセメント板1にはベース色を施した樹脂塗料2が塗
布される(第1図(a))。樹脂塗料2には顔料、砂鉄
等の艶消し剤が配合される。樹脂塗料2としては、アク
リル水系エマル′)ヨン塗料のような耐候性塗料が好ま
しい。この樹脂塗料2は70−コーターにより塗布され
る。樹脂塗料2の粘度(20℃)は、例えば、イワタカ
フプ(#4)で20〜30秒の範囲のものが好適に使用
される。 セメント板1に樹脂塗料2が塗布された後には樹脂塗料
2が硬化する前に塗料面に平均粒径の大きい砂3から小
さい砂4が順次散布される(第1図(b)(c))、粒
径の大きな砂3としでは平均粒径が0.51程度であり
、粒径の小さな砂4としては平均粒径が0゜1)程度の
ものをいう。これら砂3.4は所望の色に染色される。 砂3.4が散布された後は焼き付けされて化粧層5が形
成され、セメント板1の化粧が完了する(第1図(d)
)。 次に、本発明の詳細な説明する。 (実施例1) 丸網式抄造機を使用して常法によりセメントスラリーか
らシートを形成し、プレスして表面エンボス模様を付け
ると共に瓦形状に打ち抜き、前養生、次いでオートクレ
ーブによる蒸気養生を施してセメント板を製造した。 次に、セメント板の表面にオールアクリル水系エマルジ
ョンシーラー(固形分6±0.5%)ヲスポンジロール
コーターにより塗布量50〜60g/12(ウェット)
で塗布した。 この後、熱風温度180℃の垂直ジェット乾燥機により
30秒焼き付けた。板温は80〜90℃であった。 次いで、顔料(緑)、砂鉄を含むアクリル水系エマルジ
ョン塗料(固形公約40%、粘度(20℃)イワタカッ
プ(# 4 )20〜30秒)を70−コーターで10
0g/m2(ウェット)塗布し、約0.5秒後平均粒径
約0.511II11の黒色の砂を約19g/m2で散
布し、更に約0.5秒後平均粒径約0.トIの緑色の砂
を約23g/1112散布し、垂直ジェット乾燥機によ
Q30秒焼き付けた。板温は85〜95°Cであった。 この後、アクリル水系エマル:)Bン(固形公約25%
、粘度(20°C)イワタカップ(#4)10〜14秒
)を70−フーターにより約60g/m2(ウェット)
で塗布し、垂直流ジェット乾燥機により30秒焼き付け
た。板温は85〜95℃であった。 このようにして緑色の細かい砂により艶消し感のある面
に粗くて黒い砂が点在する美麗な表面外観を有する瓦を
得た。〃ムテープによる剥離試験を行った結果、粗い黒
砂を含めて化粧層の剥離は認められなかった。 (実施例2) 実施例1と同様のセメント板の表面にエポキシ変性アク
リル水系エマルジョンシーラー(固形公約10%、粘度
(20°C)イワタカップ(#4N5秒)をスボンノロ
ールコーターにより塗布量50g7m2(ウェット)で
塗布した。 この後、熱風温度150℃の熱風循環型乾燥機(平行流
)で3分間乾燥した。板温は約70°Cであった。次い
で、垂直ジェット乾燥機により30秒焼き付けた。板温
は80〜90℃であった。 次いで、ベースの色調を赤色に調色し、充填剤として珪
砂を調合したアクリル水系エマルジョン塗料(固形公約
40%、粘度(20℃)イワタカップ($4)20〜3
0秒)を70−コーターで130g/a+2(ウェット
)塗布し、約0.5秒後平均粒径約0.5 matの黒
色と褐色の等量の混合砂を約20g/m2で均一に散布
し、続いてベース塗料とほぼ同色の平均粒径的0 、2
 armの砂を約25H/m2散布し、熱風循環型乾燥
機により180℃の熱風で5分間焼き付は処理を施して
美麗な化粧層を得た。〃ムテープによる剥離試験を行っ
た結果、化粧層の剥離は認められなかった。 (比較例) 平均粒径的0.5 mmの黒色の砂と平均粒径的0゜1
mmの緑色の砂を予め重量部で19部と23部均一に混
合したものを一回で約42H/m2散布した以外は実施
例と同様にして化粧層を得た。 このものにあっては、実施例1の化粧層と同様の外観を
有するものの、ベース部分の粒径の小さな緑色の砂が塗
膜に埋め込められ、砂による艶消し感が減少し、シック
な感じが損なわれた。 剥離試験においても化粧層の平均粒径の大きい黒の砂の
剥離が見られた。
[Problem to be Solved by the Invention 1] In the past, the grain size of sand was uniform and it was evenly distributed, resulting in a monotonous finish. In order to eliminate this monotonous feeling, sands 3 and 4 of different particle sizes are mixed and sprinkled before the resin paint 2 hardens, but in this case, the sand with large particle sizes becomes difficult to stick. However, if the amount of resin paint 2 is increased, the sand 4 with a small particle size will be buried in the coating film of the decorative layer 5, as shown in Figure 1@2, and the matting effect of the sand 4 with a small particle size will be lost. be. The present invention was made to solve the above-mentioned problems, and its purpose is to eliminate the monotonous feeling and to exhibit a matting effect without burying the small-sized sand. The purpose of the present invention is to provide a method for decorating cement boards that can be used to decorate cement boards. [! [Means for Solving the Problem] The method for decorating a cement board of the present invention includes applying a resin paint 2 to the surface of a cement board 1, and before the resin paint 2 hardens, sand 3 having a large average particle size to sand 4 having a small average particle size is applied. The above-mentioned problem is solved by this structure. [Action 1: Before the resin paint 2 hardens, sand 3 with a large average particle size and sand 4 with a small average particle size are sequentially scattered, so the sand with a large particle size will bite into the coating film of the resin paint 2 more and the adhesion strength will be reduced. Since the sand is large and has a small particle size, it is sprayed with a delay, so it is sprayed after the resin paint 2 has cured to a certain extent, so that the resin paint 2 can penetrate properly into the coating film. The adhesion force corresponds to the grain size of the sand, giving it the desired appearance. The cement board 1 in the present invention includes cement such as plain Portland cement such as ordinary Portland cement, early strength Portland cement, and medium Portland cement, mixed Portland cement, special cement such as alumina cement, and magnesia cement; Filling materials and valves such as mica and sepiolite, organic fibers such as vinylon, asbestos, and free materials such as rock wool! A cement slurry is prepared by blending fibers, water repellents such as lignin sulfonic acid, formalin condensate, and other admixtures as required, and adding an appropriate amount of water.The cement slurry is made into paper using a fourdrinier paper machine, etc., and cured and hardened. It is something that After forming the cement board 1, the surface is embossed with a press or punched into a tile shape, and then cured. A resin paint 2 with a base color is applied to this cement board 1 (FIG. 1(a)). The resin paint 2 contains a pigment, a matting agent such as iron sand, etc. The resin paint 2 is preferably a weather-resistant paint such as an acrylic water-based emulsion paint. This resin paint 2 is applied by a 70-coater. The resin paint 2 preferably has a viscosity (20° C.) of, for example, Iwatakafupu (#4) in the range of 20 to 30 seconds. After the resin paint 2 is applied to the cement board 1, and before the resin paint 2 hardens, sand 3 with a large average particle size to sand 4 with a small average particle size is sequentially sprinkled on the paint surface (Fig. 1 (b), (c)). ), the sand 3 with a large particle size has an average particle size of about 0.51, and the sand 4 with a small particle size has an average particle size of about 0°1). These sands 3.4 are dyed in the desired color. After the sand 3.4 is sprinkled, it is baked to form a decorative layer 5, completing the decoration of the cement board 1 (Fig. 1(d)).
). Next, the present invention will be explained in detail. (Example 1) A sheet was formed from cement slurry by a conventional method using a circular mesh paper machine, pressed to give an embossed pattern on the surface, punched into a tile shape, pre-cured, and then steam-cured in an autoclave. Manufactured cement board. Next, apply an all-acrylic water-based emulsion sealer (solid content 6 ± 0.5%) to the surface of the cement board using a sponge roll coater in an amount of 50 to 60 g/12 (wet).
It was coated with. Thereafter, it was baked for 30 seconds using a vertical jet dryer with a hot air temperature of 180°C. The plate temperature was 80-90°C. Next, an acrylic water-based emulsion paint (approximately 40% solids, viscosity (20°C) Iwata cup (#4) for 20 to 30 seconds) containing pigment (green) and iron sand was coated with a 70-100 ml coater.
After about 0.5 seconds, black sand with an average particle size of about 0.511II11 was sprinkled at about 19 g/m2, and after about 0.5 seconds, the average particle size was about 0. Approximately 23 g/1112 of the green sand of To I was sprinkled and baked in a vertical jet dryer for Q30 seconds. The plate temperature was 85-95°C. After this, acrylic water-based emulsion: ) B (solid approx. 25%)
, viscosity (20°C) Iwata cup (#4) 10-14 seconds) about 60g/m2 (wet) with 70-footer
and baked for 30 seconds in a vertical jet dryer. The plate temperature was 85-95°C. In this way, a tile with a beautiful surface appearance in which the surface had a matte appearance due to the fine green sand and was dotted with coarse black sand was obtained. As a result of a peel test using tape, no peeling of the decorative layer, including the coarse black sand, was observed. (Example 2) An epoxy-modified acrylic water-based emulsion sealer (approximately 10% solids, viscosity (20°C), Iwata cup (#4N5 seconds) was applied to the surface of the same cement board as in Example 1 using a Soubonorol coater in an amount of 50 g 7 m2. (wet). After this, it was dried for 3 minutes in a hot air circulation dryer (parallel flow) with a hot air temperature of 150°C. The board temperature was about 70°C. Then, it was dried for 30 seconds in a vertical jet dryer. The plate temperature was 80 to 90°C.Then, the base color was adjusted to red, and acrylic water-based emulsion paint (approximately 40% solids, viscosity (20°C)) containing silica sand as a filler was used. ($4) 20-3
0 seconds) was applied at 130g/a+2 (wet) using a 70-coater, and after about 0.5 seconds, equal amounts of mixed sand of black and brown with an average particle size of about 0.5mat were uniformly sprinkled at about 20g/m2. Then, the average particle size of 0 and 2 with almost the same color as the base paint.
A beautiful decorative layer was obtained by spraying about 25 H/m2 of arm sand and baking with hot air at 180°C for 5 minutes using a hot air circulation dryer. As a result of a peel test using tape, no peeling of the decorative layer was observed. (Comparative example) Black sand with an average particle size of 0.5 mm and an average particle size of 0°1
A decorative layer was obtained in the same manner as in the example except that a homogeneous mixture of 19 parts and 23 parts by weight of green sand of 1.0 mm in size was spread at a time of about 42 H/m2. Although this product has the same appearance as the decorative layer of Example 1, the green sand with small particle size in the base part is embedded in the paint film, reducing the matte feeling caused by the sand and giving it a chic feel. was damaged. In the peel test, peeling of black sand with a large average particle size in the decorative layer was observed.

【発明の効果】【Effect of the invention】

本発明にあっては、セメント板の表面に樹脂塗料を塗布
した後樹脂塗料が硬化する前に平均粒径の大きい砂から
小さい砂を順次散布するので、粒径の大きい砂は8I脂
塗料の塗膜への食い込みが大きくなって固着強度が大き
くなるものであり、しかも粒径の小さい砂は時間遅れで
散布するので樹脂塗料の硬化がある程度進んだ状態で散
布することになり、樹脂塗料の塗膜に埋め込まれること
なく適当な食い込みとなるものであり、粒径に応じた固
着力となって、平均粒径の小さな砂による艶消し効果も
発揮されて所望の外観を呈するものである。
In the present invention, after the resin paint is applied to the surface of the cement board and before the resin paint hardens, sand with a large average particle size to small sand is sequentially sprinkled on the surface of the cement board, so that the sand with a large average particle size is mixed with the 8I resin paint. Sand that bites into the paint film increases, increasing the adhesion strength. Moreover, sand with small particle size is sprayed with a delay, so it must be sprayed after the resin paint has cured to a certain extent, which may cause the resin paint to harden. It does not become embedded in the paint film and has a suitable bite, and the adhesion force is proportional to the particle size, and the matting effect of sand with a small average particle size is also exhibited, giving the desired appearance.

【図面の簡単な説明】[Brief explanation of drawings]

第1図(a)(b)(c)(d)は本発明の一実施例の
各工程を示す断面図、第2図は従来例の問題点を示す断
面図であって、1はセメント板、2は樹脂塗料、3.4
は砂である。 代理人 弁理士 石 1)艮 七
Figures 1 (a), (b), (c) and (d) are cross-sectional views showing each process of an embodiment of the present invention, and Figure 2 is a cross-sectional view showing problems in the conventional example, where 1 is a cement Board, 2 is resin paint, 3.4
is sand. Agent Patent Attorney Ishi 1) Ai Shichi

Claims (1)

【特許請求の範囲】[Claims] (1)セメント板の表面に樹脂塗料を塗布した後樹脂塗
料が硬化する前に平均粒径の大きい砂から小さい砂を順
次散布することを特徴とするセメント板の化粧方法。
(1) A method for decorating a cement board, which is characterized in that after applying a resin paint to the surface of the cement board and before the resin paint hardens, sand having an average particle size of large to small is successively scattered.
JP6310189A 1989-03-15 1989-03-15 Method for decorating cement panel Granted JPH02243577A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6310189A JPH02243577A (en) 1989-03-15 1989-03-15 Method for decorating cement panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6310189A JPH02243577A (en) 1989-03-15 1989-03-15 Method for decorating cement panel

Publications (2)

Publication Number Publication Date
JPH02243577A true JPH02243577A (en) 1990-09-27
JPH0521872B2 JPH0521872B2 (en) 1993-03-25

Family

ID=13219566

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6310189A Granted JPH02243577A (en) 1989-03-15 1989-03-15 Method for decorating cement panel

Country Status (1)

Country Link
JP (1) JPH02243577A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05154444A (en) * 1991-12-03 1993-06-22 Kubota Corp Coating method for roof tile
JP2021123856A (en) * 2020-01-31 2021-08-30 ケイミュー株式会社 Building board

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05154444A (en) * 1991-12-03 1993-06-22 Kubota Corp Coating method for roof tile
JP2021123856A (en) * 2020-01-31 2021-08-30 ケイミュー株式会社 Building board

Also Published As

Publication number Publication date
JPH0521872B2 (en) 1993-03-25

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