200520853 九、發明說明： 【發明所屬之技術頜域】 本發明係關於用作為屋頂材料及牆壁材料等的建材的 塗裝板的製造方法，尤其疋製造多色彩且具有高新穎性的 塗裝板時所利用的方法。 【先前技術】 以往，藉由f射塗佈將一色以上的塗料塗裝於以1 〇 m/分以上的速度移動的帶狀被塗裝物上，用以形成多彩 花紋的塗膜（例如’參照專利文獻i )。在專利文獻1所記 載的塗裝方法中’至少從一個以上的塗料吐出喷嘴射出至 少為二色以上的不同塗料顏色的塗料，藉此，使從各塗料 吐出喷嘴吐出的塗料混合形成多色噴射圖案。 緩變化的化紋、例如、 1e)的西洋風瓦片（ 難。 但疋在上述塗I方法中，若被塗装物的表面顏色和 嘴射塗裝的塗料顏色的色調差相對較大時，被塗裝物的表 面和喷射塗裝的塗料的境界尤其突顯，要塗裝形成色調缓 類似窯變调（y 〇 h e n sty m ο η i e r瓦）的花紋，較為困 (專利文獻1 )日本專利特開第2QQ3 — 1359 9 8號公報。 【發明内容】 (發明所欲解決之問題） 本叙月疋鑒於上述課題而完成者，其目的在於，提供 —種可谷易形成色調緩缓變化的花紋之塗裝板的製造法。 200520853 (解決問題之手段） 本發明係使用於將襯底塗料1塗佈於金屬基板2的表 面，在該金屬基板2的襯底塗料1的塗佈面，藉由喷射器 塗佈複數顏色的精塗塗料3的塗裝板的製造方法。因此， 本發明之特徵為：以與襯底塗料1同色的精塗塗料3 a及 與襯底塗料1不同色的精塗塗料3b、3 c局部重疊的方 式，將此等精塗塗料3 a、3 b、3 c塗佈於上述金屬基 板2的槪底塗料1的塗佈面。 根據本發明，以與襯底塗料1同色的精塗塗料3 a及 與襯底塗料1不同色的精塗塗料3b、3 c相互重疊的方 式進行塗佈，可形成讓與襯底塗料1同色的精塗塗料3 a 及與襯底塗料1不同色的精塗塗料3 b、3 c混合的部 分。籍由混合該精塗塗料3 a、3 b、3 c的部分，則在 與襯底塗料1不同色的精塗塗料3 b、3 c和襯底塗料1 的境界處，變得不易突顯，從而可容易形成色調緩緩變化 的花紋。 又’本發明中，最好藉由稀釋襯底塗料1，以調製與 概底塗料1同色的精塗塗料3 a。該情況，利用襯底塗料 1即可調製與其同色的精塗塗料3 a，可減低精塗塗料3 a的調製時間，同時，可減少襯底塗料1與精塗塗料3 a 的色差的產生。 另外’本發明中，最好從複數顏色的精塗塗料3經常 性切換應欲噴射之精塗塗料，藉由喷槍4將該切換後的精 皇塗料貧射於上述金屬板2。該情況，在塗佈複數顏色的 200520853 精塗塗料3的過程，可兼用—士 ^ 0 ^^η ^ ^ 4^ 贺知4，與使用對應複數 顏色的精μ科3的各者的喷搶 槍4的數量。 又’本發明中，最好將洛 、襯底塗料及與其同色的精塗塗 科的顏色§ 又為次板色，同時，將與襯底塗料不同色的精塗 塗料的顏色=深燈色，而作為原色。該情況，可容易塗 相及花紋。 八瓦片（m〇uer瓦）的色 (發明之效果） 3明藉由讓與襯底塗料同色的精塗塗料及盘襯底塗 ==!塗塗料重疊的方式進行塗佈，可形成讓與襯 塗塗料及與概底塗料不同色的精塗塗料混 5的心。猎由混合該精塗塗料 不同色_塗塗料和襯底塗料的境界處 從而可各易形成色調缓缓變化的花紋。 a 【實施方式】 ΚΙ 顯不本發明之—例。名'A丨rl·» 基板2沿長度方向行進(_=:二=之金屬 塗料3的塗佈（塗裝）。 〃氏&料1與精塗 金屬基板2很久以來即用於建材之形 舉不鏽鋼板、鍍鋅鋼板、鋁—鋅電鍍鋼板’::士:，可例 但並不贿於此。又，在該金屬板2的表：200520853 IX. Description of the invention: [Technical jaw field to which the invention belongs] The present invention relates to a manufacturing method of a coating board used as a building material for roofing materials, wall materials, etc., especially to manufacture a multi-colored coating board with high novelty. Method used. [Prior art] In the past, one-color or more paint was applied to a belt-shaped object to be moved at a speed of 10 m / min or more by f-coating to form a colorful pattern coating film (for example, ' Refer to patent document i). In the coating method described in Patent Document 1, paints having different paint colors of at least two colors are ejected from at least one or more paint ejection nozzles, and the paint ejected from each paint ejection nozzle is mixed to form a multi-color ejection. pattern. Slowly changing textures, for example, 1e), are difficult for Western style tiles. However, in the above coating method I, if the hue difference between the surface color of the object to be painted and the color of the spray-painted coating is relatively large, The surface of the object to be painted and the state of the spray-painted coating are particularly prominent. It is difficult to paint to form a pattern with a color tone that is similar to that of a kiln (y 0hen sty m ο η ier tile) (Patent Document 1) Japanese Patent Special Publication No. 2QQ3 — 1359 9 8. [Summary of the Invention] (Problems to be Solved by the Invention) The present invention was completed in view of the above-mentioned problems, and its purpose is to provide a pattern that can easily change the color tone slowly. 200520853 (Means for Solving Problems) The present invention is used for applying a base coating material 1 to the surface of a metal substrate 2 and applying the base coating material 1 to the coating surface of the metal substrate 2 A method for manufacturing a coated plate in which a plurality of colors of finish coating material 3 are applied by an ejector. Therefore, the present invention is characterized in that the finishing coating material 3 a of the same color as the undercoat material 1 and a different color of the undercoat material 1 are used. Fine coating 3b, 3c partially overlap In this way, these finishing coatings 3 a, 3 b, and 3 c are applied to the coating surface of the primer coating 1 of the metal substrate 2. According to the present invention, the finishing coating 3 a of the same color as the base coating 1 is applied. And finishing coatings 3b and 3c of different colors from the undercoating material 1 are applied so as to overlap with each other, so that the finishing coating 3a of the same color as the undercoating material 1a and the finishing coating of a different color from the undercoating material 1 can be formed Paint 3 b, 3 c is mixed. By mixing the fine paint 3 a, 3 b, and 3 c, the fine paint 3 b, 3 c and the under paint are different from the base paint 1. In the realm of 1, it becomes difficult to stand out, so that it is easy to form a pattern with a gradually changing hue. Also, in the present invention, it is best to dilute the base coating material 1 to prepare a fine coating material 3 having the same color as the basic coating material 1. a. In this case, the undercoating paint 1 can be used to prepare the finishing paint 3a of the same color, which can reduce the preparation time of the finishing paint 3a, and at the same time, can reduce the color difference between the undercoating paint 1 and the finishing paint 3a. In addition, 'In the present invention, it is best to switch the finish coating 3 to be sprayed frequently from the finish coating 3 of plural colors. This sprayed fine paint is sprayed on the metal plate 2 with a spray gun 4. In this case, the process of applying 200520853 fine paint 3 with multiple colors can be used at the same time—Shi ^ 0 ^^ η ^ ^ 4 ^ Congratulations 4, and the number of spray guns 4 of each of the fine μ sections 3 corresponding to a plurality of colors. Also, in the present invention, it is preferable that The color § is a sub-panel color. At the same time, the color of the finishing paint that is different from the base paint is the dark color, and it is used as the primary color. In this case, it can be easily painted and patterned. Eight tiles (mouer tile) ) Color (effect of the invention) 3Ming By applying the coating with the same color as the base coating and the disk substrate coating == !! Paint different colors of fine coating paint mixed with 5 hearts. By mixing the fine coating paint with different colors, the boundary between the coating paint and the undercoating paint can easily form a pattern with a slowly changing hue. a [Embodiment] KI is not an example of the present invention. The name 'A 丨 rl · »The substrate 2 travels in the longitudinal direction (_ =: 二 = the coating (painting) of the metal coating 3. The && material 1 and the fine-coated metal substrate 2 have been used for building materials for a long time. Examples of stainless steel plates, galvanized steel plates, and aluminum-zinc plated steel plates :: 士: are examples but not bribes. Also, in the table of the metal plate 2:
r 1 me r )钱施以底層钱。 」^塗（P 襯底塗料1很久以來即用於建材等，3 、，疋為了賦予金屬 200520853 基板2以耐腐名虫、而+ * & ί虱候、耐磨耗等的性能而塗裝者。作 月1^斜、:Γ主料1，可單獨使用聚酯樹脂塗料、尿烷樹 二二、-軋乙烯樹脂塗料、丙烯樹脂塗料、聚烯等或混 另外，襯底塗料1内配合有顏料，藉此， 备〜’、者色為所需的顏色。該顏料可例示各種的著 多員;：Ρ方鏽，料、體質顏料（二氧化石夕、氧化紹、石炭酸 巧11"^鋇问嶺土滑石粉等），但並不侷限於此等。顏料 色性或與塗裝中的樹脂的密接性的提升、襯底的 隱敗，等進行配合。又，襯底塗料1可使關如日本專利 特開^ 2 0 Q 2 -14 6 2 8 0號公報所揭示的縮性塗料 (具兩收縮性的塗料且具有消除齡麗的效果的塗料）。 作為消豐色劑或防止受傷的防止劑或提升接合（固定效 果）的目的，可於襯底塗料1配合骨材。骨材可例示玻璃 ^維、玻猶、樹脂珠、#母等，但並不限於此等。又， 還可於襯底塗料1配合合成微粉二氧化秒、有機膨潤土、 緩曱纖維素、紅鱗料增減、三聚氰胺系或苯併二 氨基三嗪系或異氰酸酯系等的交聯劑'聚丙烯酸等的分^ 劑等。又，本發明中，襯底塗料1的黏度，例如以福^不 N〇· 4法所測定且為3 〇〜1 2 0秒者為較佳，但並 限於此。 ' > 知塗塗料3可使用與概底塗料1相同者。亦即，轉見底 塗料1與上述相同，可使用於聚酯樹脂塗料等的各種樹2 塗料配合有顏料、骨材及其他成分者。另外，精塗塗料3曰 係使用顏色各異的複數顏色的精塗塗料3 a、3 b、3 。 200520853 在此’洗明使用顏色各異的三種類精塗塗料3 a、3 b、 3 c的情況，但並不限於此，精塗塗料3也可為顏色各異 的二種類，或顏色各異的四種類以上。而且，顏色各異的 複數顏色的精塗塗料3 a、3b、3 c中，分別調製成為 一種類的精塗塗料3 a與襯底塗料丄同色，另外，剩餘的 其他♦月塗塗料3 b、3 c與襯底塗料1不同色。該情況， 舁襯底塗料1同色的精塗塗料3 a係使用與襯底塗料1相 同的顏料進行著色，而與襯底塗料1不同色的精塗塗料3 b 3 c，可使用與襯底塗料1不同的顏料進行著色。另 外，與襯底塗料i同色的精塗塗料3 a，最好藉由適宜的 無色溶劑稀釋襯底塗料1進行調製。藉此，可利用槻底塗 料1調製與觀底塗泮+1同色的精塗塗料33，與分別調製 襯底塗料1和精塗塗料3 a的情況比較，可減少加工時 間:同時不易產生襯底塗料i和精塗塗料3 a的色差。又， 如後述，襯底塗料工係以報塗器，而精塗塗料3 a係以喷 槍分別進行塗裝，因此，以直接轉用襯底塗料丄且較精塗 塗料3 a更為稀釋而使黏度降低者為較佳。本發明中，精 塗塗料3 a的黏度，例如以福特杯；^ 〇 . 4法（了工$ κ 5 4◦〇)所測定且為1 5〜4 5秒者為較佳，但並不限 於此。 圖一所示本發明所使用的塗裝裝置中，於 =形成有-把喷搶4。喷搶4係可使用例如、利用從氣 系所供給的空氣以喷射精塗塗料3者。於該喷搶4連 接著複數根（三根）配管i a、1 i b 、 200520853 同時，配管1 1 別儲積有精塗塗：；1 lb、1 1 c的另一端係連接於分 2 b工 坌枓3 a、3 b、3 c的塗料箱1 2 a、工 此等閥 13Γ frf_13a'13b、13c° 制壯 、_13b、13c係藉由電腦等所構成的控 1 6進行開閉控制。另外，在較閥1 3 a、1 3 b、 各配：=游側(塗料箱12a、l2b、12c#j)4 5 b I’ 1 1 a、1 1 b、1 1 c 的中途設有泵1 5 a、i 、、1 5 c °又’塗裝裝置上具備有輥塗器1 7及烘烤 爐1 8。 f使用如上述的塗裝裝置連續性地於長帶狀金屬基板 2上施以塗裝的過程中，依如下方式進行。首先，邊垂直 向上搬運（行進）金屬基板2邊藉由輥塗器1 7於金屬基 板2的表面（單面）塗佈襯底塗料丄。其次，以襯底塗料 1的塗裝面朝上略水平搬送金屬基板2的方式，由搬運輥 2 0改變金屬基板2的搬運方向。然後，邊略水平搬運金 屬基板2邊使其通過塗裴室1 〇，在從喷槍4喷射而以噴 射將精塗塗料3塗佈於金屬基板2的襯底塗料1的塗裝面 上。依精塗塗料3的噴射所塗佈的圖案，俯視為圓形或橢 圓形等。其後，將金屬基板2導入烘烤爐1 8以烘烤塗裝 於金屬基板2的襯底塗料1及精塗塗料3。如此般進行之 後’即可於金屬基板2塗裝襯底塗料1及精塗塗料3。又， 形成於金屬基板2的襯底塗料1或精塗塗料3的塗膜，最 好為丄〇〜3 〇 // m，但並不限於此。另外，精塗塗料3 10 200520853 的喷射條件可設為，霧化壓力為〇·丄〜 圖案壓力為0.卜0.3MPa，吐出量為1〇〇〜5 0 0m 1/分等’但並不限於此等。χ，還可設為線速度 (金屬基板2的搬運速度）為3 0η 2〇m/分，供烤 爐1 8的烘烤溫度為1 8 Q〜2 5 (TC，烘烤時間為2 〇 〜1 0 0秒等，但並不限於此等。 本發明t，如上述般，在由喷射器塗佈精塗塗料3的 過程，係設定為根據^定於控制裝置i 6的時間排程，經 常順序切換從喷搶4所喷射的精塗塗料3 a、3 b、3 c 的種類。例如，在從喷槍4喷射精塗塗料3 a的情況，由 控制裝置1 6㈣m㈣作齡U 3 a，且作_閉其他 的閥丄3 b、1 3 c，利用泵1 5 a的作用從塗料箱工2 a通過配管1 1 a將精塗塗料3 a供給噴搶4。藉此，利 用氣泵1 4的作用可從喷搶4喷射精塗塗料3 a。另外， 從噴搶4喷射精塗塗料3 b的情況也可與上述相同進行。 亦即，由控制裝置1 6控制以打開作動閥1 3 b，且作動 關閉其他的闊1 3 a、1 3 c，利用泵1 5 b的作用從塗 料箱1 2 b通過配管1 lb將精塗塗料3 b供給噴搶4了 利用氣泵1 4以便從喷槍4喷射精塗塗料3 b。另外，從 噴搶4喷射精塗塗料3 c的情況也可與上述相同進行。亦 即’由控制裝置1 6控制以打開作動閥1 3 c，且作動關 閉其他的閥1 3 a、1 3 b，利用泵1 5 c的作用從塗料 相1 2 c通過配管1 1 c將精塗塗料3 c供給噴搶4後， 利用氣泵1 4的作用可從喷槍4喷射精塗塗料3 c。 200520853 另外，本發明中，一 精塗塗料3的複數心在藉由喷射器塗佈顏色不同的作為 係將與襯底塗料丄^的精塗塗料3 a、3 b、3 c時， 色的精塗塗料3 b 1 %精塗塗料3 a及與此鄰接的不同 底塗料1同色的精*、2局部重疊進行塗佈。在此，與襯 3c的重疊比例，料33及不同色的精塗塗料3b、 塗塗料3 a及*此，^宜紋’與m底塗料1同色的精 最好以面積換嘗 :：接的不同色的精塗塗料3b、3c， 比例）為重疊5〜5 d c的相互重疊的面積 調整精塗塗料3 a〜％。以形成如此的重疊部分的方式， 或線速度等。然後，3 ^的每·人的噴射量等的喷射條件 3 c的重叠部分3 〇如圖二所示，在上述精塗塗料3 a〜 同色的精塗塗料^ ’可形成如斑故般混合與襯底塗料1 3 b、3 ^的部分^及與襯底塗料1不同色的精塗塗料 精塗塗料3 b、^藉由起合’概底塗料1與不同色的 易由精塗塗料3 ^的境界處，變得不易突顯，從而可容 如上:般所二^形成色調緩緩變化的花紋。 曲加工或切斷為^的塗裝板，係通過施以減形等的彎 牆壁材料的建材9疋的大小而形成為金屬屋頂材料或金屬 頂材料2 1，〜丨圖三所示建材係形成為略波狀的橫鋪屋 部2 2 :別其上端形成有表面側彎曲形成的嵌合凸 後，該棒鋪屋頂2背面側彎曲形成的嵌合凹部2 3。然 類似窒變料2 1即便為金屬屋頂材料，仍可呈現 =周的西年風瓦片（m…er瓦)的外觀。 如上述，雖可使用只有—把噴搶4的塗裝 12 200520853 裝置，但如圖四所示，即使使用具備二把喷槍4的塗裝裝 置亦可。該情況，與使用一把喷槍4的塗裝裝置比較，雖 有增加喷槍4的數量而使裝置大型化的擔憂，但卻有可更 為有效進行喷射塗佈的優點。又，圖四所示裝置中，雖使 用精塗塗料3 b、3 c的二種類，但並不限於此，與上述 相同，也可為三種類或其以上的複數顏色的精塗塗料3。 另外，在圖四之塗裝裝置中，係將喷槍4排列成與金屬基 板2的搬運方向大致平行的方向，但並不限於此，如圖五 所示，也可將喷槍4排列成與金屬基板2的搬運方向（由 箭頭所示）大致垂直的方向。 〔實施例〕 以下，依實施例具體說明本發明。 使用圖一所示塗裝裝置製造塗裝板。作為金屬基板 2，使用寬幅9 1 4 m m，厚度0 · 3 5 m m的長鋼板。 襯底塗料1係使用將顏料配合於聚酯系樹脂塗料（曰 本油脂B A S F C 〇 a t i n g s (股）製「S 0 3 — G 4 6 5 1」）上而著色為淺橙色的色相者。另外，襯底塗 料1的黏度（2 0°C )係為使用福特杯N 〇 · 4的黏度所 測定且為6 0秒者。 作為與襯底塗料1同色的精塗塗料3 a，係為由環己 酮及溶劑汽油為主成分的溶劑稀釋襯底塗料1而成者。該 精塗塗料3 a的黏度（2 0°C )係為使用福特杯N 〇 · 4 的黏度所測定且為3 0秒者。 作為與襯底塗料1不同色的精塗塗料3b，係使用將 13 200520853 顏料配合於與上述相同的聚酯系樹脂 色的色相者。另外，藉由配合與上述相=著色為深橙 塗料3 a的黏度（2 〇。〇係為使用福特^劑，該精塗 度所測定且為3 〇秒者。 、N 〇 · 4的黏 作為與襯底塗料1不同色的精塗塗 =於=相同的聚酯系樹脂塗料上 Γ2Γ由配合與上述相同的溶劑，該精塗塗 枓3C的黏度（2crcw為使用福特杯 所測定且為3 〇秒者。 然後，以線速度65m/分邊搬運金屬基板2邊進行 襯底塗料1及精塗塗料3a、3b、3c的塗佈。在此， 噴射條件係設為霧化壓力為〇 · 2 QMP a，圖案壓力〇 · MPa，吐出里為290ml/分（各色）。另外，喷 射扁置之噴射圖案係將精塗塗料3 a喷射〇 · 1 5秒— 〇 · 1 0秒無喷射—將精塗塗料3 b喷射〇 ·2 〇秒—〇 · 1 0秒無噴射—將精塗塗料3 c喷射〇 · 2 〇秒—〇 · 〇 8秒無噴射—將精塗塗料3 a喷射〇 · 1 5秒—…，重複 進=。圖六顯示各精塗塗料3 a〜3 c的喷射（〇n)及 無賣射（0 F F)的重複圖案。如此般，與襯底塗料1同 色的精塗塗料3 a及不同色的精塗塗料3 b、3 c，形 成局部重疊（面積換算為2 0%)。又，喷搶係使用A S A ^ 1 s UN A C製的彩色喷槍「τ 2 9 2 5」。然後，將 喷射塗裝後的金屬基板2導入烘烤爐1 8内，以溫度2 3 0 c姨烤5 〇秒，獲得襯底塗料1的塗膜厚度為1 8 // 14 200520853 m，精塗塗料3 a〜3 c的塗膜厚度為5〜i 〇 ^, . 丄^从m的塗 衣板。其後，藉由輥成形等彎曲加工塗裝板，同時，切斷 為指定的長度而形成橫鋪屋頂材料2 。該橫舖屋頂材料 2 1係具有色調緩緩變化的花紋者（參照附件一）。'、 【圖式簡單說明】 第一圖為顯示本發明之實施形態的一例的概略圖。 第二圖為顯示同上的塗裝狀態的概略圖。 第二圖為顯示同上的建材的一例的立體圖。 第四圖為顯示同上的另一實施形態的一例的概略圖。 第五圖為顯示同上的另一實施形態的一例，為喷槍的配置 的概略圖。 第六圖為顯示同上的喷搶的喷射的重複圖案的一例的說明 圖。 附件一為顯示同上的建材的一例的照片的複印圖。 【主要元件符號說明】 1 襯底塗料 2 金屬基板 3 精塗塗料 3 a、3 b、3 c 精塗塗料 4 噴搶 1 〇 塗裝室 lla、llb、lic 配管 I2a、i2b、i2e 塗料箱 15 200520853 13a、13b、13c 電磁閥等的閥 14 氣泵 15a、15b、15c 泵 16 控制裝置 17 輥塗器 18 烘烤爐 2 0 搬運輥 2 1 橫鋪屋頂材料 22 嵌合凸部 2 3 嵌合凹部 16r 1 me r) money is given to the underlying money. ^ Coating (P substrate coating 1 has been used for building materials for a long time, 3, 疋, in order to give the metal 200520853 substrate 2 resistance to rotten insects, and + * & lice and abrasion resistance, etc. Installer. For the month 1 ^ oblique, Γ main material 1, you can use polyester resin coating, urethane 222,-rolled vinyl resin coating, acrylic resin coating, polyolefin, etc. or mixed, substrate coating 1 There are pigments in it, so that you can prepare the desired color. The pigment can be exemplified by a variety of authors ;: P square rust, materials, constitutional pigments (stone dioxide, oxide, carbon dioxide). 11 " ^ Barium talc powder, etc.), but it is not limited to this. The pigment color or the adhesion to the resin in the coating is improved, the substrate is hidden, etc., and the substrate is matched. Coating 1 can make the shrinkable coating (a coating with two shrinkage properties and a coating that has the effect of eliminating ageing) as disclosed in Japanese Patent Laid-Open No. ^ 2 0 Q 2 -14 6 2 8 0. Toner or preventive agent to prevent injury, or to improve the bonding (fixing effect), can be used with the base coating 1 to match the aggregate Examples of the aggregate material include glass, glass, glass beads, resin beads, etc., but it is not limited to these. In addition, the base coating material 1 can also be combined with synthetic fine powder dioxide seconds, organic bentonite, slow cellulose, red Scale increase, decrease, melamine-based, benzodiaminotriazine-based, or isocyanate-based cross-linking agents such as polyacrylic acid, etc. In addition, in the present invention, the viscosity of the substrate coating 1 is, for example, ^^ Those measured by the No. 4 method and 30 to 120 seconds are preferred, but are not limited thereto. '≫ The same coating material 3 can be used as the base coating material 1. That is, the bottom coating Paint 1 is the same as above, and can be used for various tree 2 paints such as polyester resin paints with pigments, aggregates, and other ingredients. In addition, fine paint 3 is a fine paint 3 that uses a plurality of colors with different colors. a, 3 b, 3. 200520853 In this case, three types of fine coatings 3 a, 3 b, and 3 c with different colors are used, but it is not limited to this. The fine coatings 3 may also have different colors. Two types, or four or more types with different colors. In addition, a finish coating 3 of a plurality of colors with different colors In a, 3b, and 3c, they are respectively prepared into a kind of finishing paint 3a and the base paint are the same color, and the remaining other moon paints 3b, 3c are different from the base paint 1. This situation舁 Substrate coating 1 is the same color as the finish coating 3 a. It is colored with the same pigment as the base coating 1, and the finish coating 3 b 3 c is different from the base coating 1. Different pigments are used for coloring. In addition, the fine coating 3a of the same color as the base coating i is preferably prepared by diluting the base coating 1 with a suitable colorless solvent. Thus, the base coating 1 can be used to prepare and observe the base. Compared with the case where the undercoating paint 1 and the overcoating paint 3 a are separately prepared, the coating +1 of the same color can be used to reduce the processing time: at the same time, it is not easy to produce a color difference between the undercoating paint i and the overcoating paint 3 a. In addition, as described later, the undercoater uses a coater, and the fine-coating paint 3a is applied separately with a spray gun. Therefore, it is directly transferred to the undercoating paint and is thinner than the fine-coating paint 3a. It is better to reduce the viscosity. In the present invention, the viscosity of the finish coating 3 a is, for example, measured in a Ford Cup; ^ 0.4. (Measured at $ κ 5 4 ◦) and is preferably 15 to 45 seconds, but it is not Limited to this. In the coating device used in the present invention shown in FIG. The spray gun 4 system may use, for example, a spray coating 3 using air supplied from the air system. A plurality of (three) pipes ia, 1 ib, 200520853 are connected to the spray gun 4. At the same time, the pipes 1 1 do not have fine coatings stored; the other ends of 1 lb, 1 1 c are connected to the branch 2 b. 3 a, 3 b, 3 c paint box 1 2 a, these valves 13Γ frf_13a'13b, 13c ° make strong, _13b, 13c are opened and closed by a computer 16 and other controls. In addition, the valve 1 3 a, 1 3 b, and each matching: = swimming side (paint box 12a, 12b, 12c # j) 4 5 b I '1 1 a, 1 1 b, 1 1 c The pumps 15a, i, and 15c are provided with a roll coater 17 and a baking oven 18 on the coating device. f The process of continuously applying the long strip-shaped metal substrate 2 using the coating device as described above is performed as follows. First, while the metal substrate 2 is being transported (advancing) vertically, the surface (single-side) of the metal substrate 2 is coated with the undercoat material 藉 by means of a roll coater 17. Next, the conveyance direction of the metal substrate 2 is changed by the conveyance roller 20 so that the metal substrate 2 is conveyed with the coating surface of the undercoating material 1 facing up slightly. Then, the metal substrate 2 is conveyed through the coating chamber 10 while being transported slightly horizontally, and the finish coating material 3 is sprayed onto the coating surface of the base coating material 1 of the metal substrate 2 by spraying from the spray gun 4. The pattern applied by spraying of the finish coating 3 is circular or oval in plan view. Thereafter, the metal substrate 2 is introduced into a baking furnace 18 to bake the undercoat material 1 and the finish coating material 3 applied to the metal substrate 2. After doing so, the substrate 1 and the finish coating 3 can be applied to the metal substrate 2. The coating film of the undercoating material 1 or the finishing coating material 3 formed on the metal substrate 2 is preferably 丄 0 ~ 3 〇 // m, but it is not limited to this. In addition, the spraying conditions of the fine coating material 3 10 200520853 can be set as follows: the atomizing pressure is 0 · 丄 ~ the pattern pressure is 0. MPa 0.3MPa, the discharge amount is 100 ~ 50 0 0m 1 / min, etc., but it is not Limited to these. χ can also be set to a linear speed (conveying speed of the metal substrate 2) of 30 η 2 0 m / min, and the baking temperature for the oven 18 is 1 8 Q ~ 2 5 (TC, the baking time is 2 〇 ~ 100 seconds, etc., but it is not limited to this. In the present invention, as described above, in the process of applying the finish coating 3 by the ejector, it is set to be scheduled according to the time set by the control device i 6. The types of finish coating 3 a, 3 b, 3 c sprayed from spray gun 4 are often switched sequentially. For example, when the finish coating 3 a is sprayed from spray gun 4, the control device 16 6m is used as the age U 3 a, and _ close other valves b 3 b, 1 3 c, the role of the pump 1 5 a from the paint boxer 2 a through the pipe 1 1 a to the fine coating 3 a spray gun 4. By this, use The function of the air pump 14 can spray the fine coating material 3 a from the spray gun 4. In addition, the case of spraying the fine coating material 3 b from the spray gun 4 can also be performed in the same manner as above. That is, the control device 16 controls the opening operation. Valve 1 3 b, and actuated to close the other wide 1 3 a, 1 3 c, using the role of the pump 1 5 b from the paint tank 1 2 b through the pipe 1 lb, the fine coating 3 b was supplied to the spray gun 4 using the air pump 1 4 to The finish coating material 3b is sprayed from the spray gun 4. In addition, the case where the finish coating material 3c is sprayed from the spray gun 4 can also be performed in the same manner as above. That is, 'controlled by the control device 16 to open the actuation valve 1 3c, and Operate and close the other valves 1 3 a, 1 3 b, and use the action of the pump 1 5 c to feed the paint coating 3 c from the paint phase 1 2 c through the pipe 1 1 c to the spray gun 4 and use the action of the air pump 14 The finish coating 3 is sprayed from the spray gun 4 c. 200520853 In addition, in the present invention, a plurality of finish coatings 3 are designed to apply the finish coating 3 having a different color from the base coating by an ejector. For a, 3 b, and 3 c, the color finish coating 3 b 1% finish coating 3 a and the adjacent different primers 1 with the same color finish *, 2 are partially overlapped and applied. Here, it is applied with the liner 3c Overlap ratio, material 33 and different colors of fine paint 3b, paint 3a and *, ^ Yiwen 'and m base paint 1 of the same color are best replaced by area :: different colors of fine paint Paints 3b, 3c (ratio) are adjusted to overlap areas of 5 to 5 dc and overlap with each other to adjust the finish paint 3a to%. In such a way as to form such an overlapping portion, or linear velocity, etc. Then, the superimposed portion 3 of the spraying condition 3 c such as a spray amount per person of 3 ^ is shown in FIG. 2. The fine-coating paint 3 a of the same color as the fine-coating paint of the same color ^ 'can be mixed like a spot. Part of the base coating 1 3 b, 3 ^ and the fine coating paint 3 b, ^ different from the base coating 1 Fine coating 3 b, ^ by the combination of 'primary base coating 1 and different colors of easy-to-finish coating In the realm of 3 ^, it becomes difficult to stand out, so that it can be tolerated as above: the pattern of slowly changing hue is formed. The curved coating or cut to ^ is formed into a metal roof material or metal roof material by the size of the building material 9 疋, such as a curved wall material. The horizontally-tiled roof part 2 2 is formed in a slightly wavy shape: A fitting recess 23 is formed on the back side of the rod-shaped roof 2 after a fitting protrusion formed by bending on the front side is formed on the upper end. However, similar to suffocating material 2 1 even if it is a metal roofing material, it can still show the appearance of the western-style tile (m ... er tile). As mentioned above, although only the spraying device 12 200520853 can be used, as shown in Figure 4, even a coating device with two spray guns 4 can be used. In this case, compared with a coating apparatus using one spray gun 4, although there is a concern that the number of spray guns 4 is increased to increase the size of the apparatus, there is an advantage that spray coating can be performed more effectively. In the apparatus shown in Fig. 4, although two types of finish coatings 3b and 3c are used, the present invention is not limited to this, and may be three types or more of finish coatings 3 of the same color as the above. In addition, in the coating device of FIG. 4, the spray guns 4 are arranged in a direction substantially parallel to the conveying direction of the metal substrate 2, but it is not limited to this. As shown in FIG. 5, the spray guns 4 may be arranged as A direction substantially perpendicular to the conveyance direction (indicated by an arrow) of the metal substrate 2. [Examples] Hereinafter, the present invention will be specifically described with reference to examples. A coating board was manufactured using the coating apparatus shown in FIG. As the metal substrate 2, a long steel plate having a width of 9 1 4 m and a thickness of 0. 3 5 m was used. The undercoating material 1 is a color that has a light orange color by blending a pigment with a polyester resin coating material (Japanese grease B A S F C 〇 a t i n g s ("S 0 3-G 4 6 5 1")). In addition, the viscosity (20 ° C) of the undercoat material 1 was measured using a viscosity of a Ford Cup No. 4 and was 60 seconds. The finish coating 3a having the same color as the undercoat 1 is obtained by diluting the undercoat 1 with a solvent containing cyclohexanone and solvent gasoline as main components. The viscosity (20 ° C) of this fine-coating coating 3 a was measured using a viscosity of a Ford Cup No. 4 and was 30 seconds. As the finish coating 3b having a color different from that of the undercoating material 1, a color tone containing 13 200520853 pigment in the same polyester resin color as described above is used. In addition, by blending with the above-mentioned phase = the viscosity of the dark orange paint 3 a (20.0) is based on the use of Ford ^ agent, the fine coating degree is measured and is 30 seconds., The viscosity of N 0.4 As the finish coating of a different color from the undercoat coating 1 = on = the same polyester resin coating Γ2Γ The viscosity of the finish coating 枓 3C (2crcw is measured using a Ford cup and is 30 seconds. Then, the substrate 1 and the finish coatings 3a, 3b, and 3c are applied while the metal substrate 2 is conveyed at a linear speed of 65 m / min. Here, the spraying conditions are set to an atomizing pressure of 0. · 2 QMP a, pattern pressure 0 · MPa, 290ml / min (various colors) in the discharge. In addition, the spray pattern is sprayed on the flat coating 3 a. ○ 15 seconds-〇 · 10 seconds without spray — Spray finish coating 3 b 0.2 seconds — 0. 10 seconds without spray — Spray finish coating 3 c 0.2 seconds — 0.8 seconds without spray — spray finish coating 3 a 〇 · 15 sec —..., repeated feed =. Figure 6 shows the repetition of spraying (〇n) and non-selling (0 FF) of each fine coating 3a ~ 3c. In this way, the fine coating 3a of the same color as the base coating 1 and the fine coating 3b and 3c of different colors form a local overlap (area conversion is 20%). In addition, the spray grab system uses ASA ^ 1 s UN AC color spray gun "τ 2 9 2 5". Then, the metal substrate 2 after spray coating is introduced into a baking oven 18 and baked at a temperature of 2 3 0 c for 50 seconds to obtain a lining. The thickness of the coating film of the primer 1 is 1 8 // 14 200520853 m, and the thickness of the coating film of the fine coating 3 a to 3 c is 5 to i 〇 ^,. 丄 ^ from the coating board of m. Thereafter, by At the same time, the coated panel is bent by roll forming, etc., and cut into a specified length to form a horizontal paving roof material 2. The horizontal paving roof material 21 is a pattern with a gradually changing color tone (see Annex 1). ', [ Brief description of the drawings] The first diagram is a schematic diagram showing an example of an embodiment of the present invention. The second diagram is a schematic diagram showing a coating state as described above. The second diagram is a perspective view showing an example of a building material as described above. Fourth The figure is a schematic diagram showing an example of another embodiment of the same. The fifth diagram is an example showing another embodiment of the same as the above. , Is a schematic diagram of the configuration of the spray gun. The sixth figure is an explanatory diagram showing an example of the repeated pattern of the spraying of the same spray gun. Attachment 1 is a photocopy of a photograph showing an example of the same building material. [Description of the main component symbols ] 1 undercoating 2 metal substrate 3 finishing coating 3 a, 3 b, 3 c finishing coating 4 spray coating 1 〇 painting room lla, llb, lic pipe I2a, i2b, i2e paint box 15 200520853 13a, 13b, 13c Valves such as solenoid valves 14 Air pumps 15a, 15b, 15c Pumps 16 Control devices 17 Roller applicators 18 Baking furnaces 2 0 Transporting rollers 2 1 Roofing materials 22 Fitting projections 2 3 Fitting recesses 16