JP4354746B2 - Decorating powder and particulate matter spraying apparatus, and method for manufacturing a decorative building board using this apparatus - Google Patents

Decorating powder and particulate matter spraying apparatus, and method for manufacturing a decorative building board using this apparatus Download PDF

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JP4354746B2
JP4354746B2 JP2003175923A JP2003175923A JP4354746B2 JP 4354746 B2 JP4354746 B2 JP 4354746B2 JP 2003175923 A JP2003175923 A JP 2003175923A JP 2003175923 A JP2003175923 A JP 2003175923A JP 4354746 B2 JP4354746 B2 JP 4354746B2
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decorative
powder
granular material
decorative powder
roller means
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JP2005007334A (en
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大部和洋
基 日笠
大橋春樹
桜井裕一
瀬戸敏彰
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Nichiha Corp
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Nichiha Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、特に装飾用粉粒状物を散布して、石柄調、タイル柄調等の表面外観を有する化粧建築板を製造するのに用いるに好適な装飾用粉粒状物散布装置およびこの散布装置を用いた化粧建築板の製造方法に関する。
【0002】
【従来の技術】
従来から、無機質系基板の表面に凹凸模様を形成し、さらにその表面に着色塗装や印刷を施して、石柄調、タイル柄調、煉瓦柄調等の装飾面に形成した外壁材等の化粧建築板は良く知られている。
【0003】
このような化粧建築板は、セメント等自硬性無機質材料を主原料とする組成物を、湿式抄造法或いは半乾式成形法で成形した未硬化無機質マットの表面を型ロールや型板で圧締して所望の凹凸模様付けを行い、その表面に下地シーラー塗装を行った後、着色塗料による塗装や斑点塗装、或いはインクによる印刷等の装飾加工を行い、最上層に透明性クリアー塗装を行うことにより製造されている。
【0004】
しかしながら、このような化粧建築板は、塗装や印刷によって装飾を施すものであるので、石やタイル等の有する質感、自然な不均一感を現出させるには、不十分であり限界があった。また上記従来の塗装仕上げの場合、永年の使用により基材と塗膜との密着性が低下して塗膜に亀裂、剥離等の損傷を生じることがあり、耐候性も十分とは言えなかった。更にこの塗装仕上げの化粧建築板を製造する場合、下塗り、中塗り、上塗り、トップ塗装等の塗装工程や、塗料の貯蔵・調合・乾燥等の工程等多くの工程を必要とするため、生産性が悪くなるという問題があった。
【0005】
このため、例えば、特開平5−194059号、特開平11−226491号、特開平6−155424号に示すように、化粧建築板の基板に珪砂などの粉粒状物を固着させて模様付けを行ない、この粉粒状物によって自然観や質感を向上させたり、塗装工程を簡略化させたり、或いは耐候性を向上させたりすることが知られている。
【0006】
また、このような粉粒状物を散布する手段として、例えば、特開平5−317794号、特開平5−23636号、特開平7−171482号に示すように、被塗物に珪砂等粉粒状物を均一に散布することのできる手段、或いは被塗物に凹凸模様が形成されている場合であっても、均一に散布することのできる手段が知られている。
【0007】
【特許文献1】
特開平5−194059号
【0008】
【特許文献2】
特開平11−226491号
【0009】
【特許文献3】
特開平6−155424号
【0010】
【特許文献4】
特開平5−317794号
【0011】
【特許文献5】
特開平5−23636号
【0012】
【特許文献6】
特開平7−171482号
【0013】
【発明が解決しようとする課題】
しかしながら、上記従来の化粧建築板等における粉粒状物散布手段では、粉粒状物が均一性をもって散布される結果、石柄調等の自然な不均一感を十分に現出させることが困難であり、また粉粒状物の不均一な散布をコントロールしながら行うことができなかった。
【0014】
本願発明はかかる従来の欠点に鑑みなされたもので、化粧建築板表面に自然な不均一感を現出させるように、粉粒状物をコントロール性良く不均一に散布することのできる装飾用粉粒状物散布装置、およびこの散布装置を用いた化粧建築板の製造方法を提供することを目的とする。
【0015】
【課題を解決するための手段】
本目的を達成するために、請求項1の発明に係る装飾用粉粒状物散布装置は、多数の孔部を表面に有し、該孔部から不均一に装飾用粉粒状物を落下させる回転ローラー手段と、該回転ローラー手段の多数の孔部に装飾用粉粒状物を供給する装飾用粉粒状物供給手段とを備えた構成とした。
【0016】
これによれば、ホッパー等の供給手段から供給された装飾用粉粒状物は、一旦回転ローラー手段の多数の孔部に保持された後、この回転ローラー手段の回転に伴って順次、不均一に被塗物表面に落下散布されるので、被塗物表面に石柄調などの装飾用粉粒状物による自然な不均一感、素材感を現出させることができ、更には、自然なぼかし模様、陰影模様等を形成することも可能となる。
【0017】
また、請求項2の発明に係る装飾用粉粒状物散布装置は、多数の孔部の平面形状が異形状又は、異形状を含む形状に形成されている構成とした。これによって多数の孔部の夫々に供給保持される装飾用粉粒状物の量を変化させることができ、請求項1の作用効果に加えて、孔部から落下する粉粒状物の不均一性を孔部の平面形状によってコントロールしながら行うことができる。また、孔部の形状を変えることによって不均一性に一層の多様性を持たせることが容易にできる。
【0018】
請求項3の発明に係る装飾用粉粒状物散布装置は、多数の孔部の配置に粗密差が設けられている構成とした。これによれば、多数の孔部を密に配置した部分からは粗に配置した部分よりも多くの装飾用粉粒状物を落下散布させることができ、請求項1又は2の作用効果に加えて、更に多様な不均一状態に、コントロール性よく装飾用粉粒状物を散布することができる。
【0019】
請求項4の発明に係る装飾用粉粒状物散布装置は、回転ローラー手段に近接して、該回転ローラー手段の多数の孔部以外の表面に供給された装飾用粉粒状物を掻き取るための掻き取り手段を備えている構成とした。これによって、回転ローラー手段の、多数の孔部以外の表面に供給された過剰の装飾用粉粒状物が被塗物表面に落下するのを防止することができるので、請求項1乃至3の作用効果に加えて、装飾用粉粒状物の散布を一層コントロール性良く行うことができる。
【0020】
請求項5の発明に係る装飾用粉粒状物散布装置は、回転ローラー手段の多数の孔部から落下した装飾用粉粒状物に振動を加えて散布する振動板手段を備えてなる構成とした。これによって、回転ローラー手段から落下した粉粒状物は被塗物に直接散布されるのではなく、振動板手段の上に一旦落下した後、その散布速度や散布パターンを変化させながら散布することができるので、請求項1乃至4の作用効果に加えて、散布パターンのバリエーションを一層拡大することができる。
【0021】
また、請求項6の発明に係る装飾用粉粒状物散布装置は、請求項1乃至5に記載の装飾用粉粒状物散布装置の前方に、第2の装飾用粉粒状物を断続的に散布させる断続散布手段を備えている構成とした。これによって、請求項1乃至5の作用効果に加えて、第1の装飾用粉粒状物が散布された被塗物の上に第2の装飾用粉粒状物を断続的、スポット的に散布することができるようになるので、特に自然観のあるぼかし模様や陰影模様を強調的に現出させることができる。
【0022】
請求項7の発明に係る化粧建築板の製造方法は、無機質自硬性材料又は無機質自硬性材料と木質材料とを主成分とする組成物をフォーミングして形成した未硬化無機質材料マットの表面に、前記請求項1乃至6のいずれかに記載の装飾用粉粒状物散布装置により装飾用粉粒状物を不均一状態に散布した後、該未硬化無機質材料マットをエンボスプレス成形する構成とした。これによって、装飾用粉粒状物を無機質材料マットの表面上方から不均一状態に散布し、エンボス型による無機質材料マットの凹凸成形と同時に粉粒状物を固着させることができるので、目地溝調や石肌柄調等の凹凸模様が表面に形成され、更にその表面に装飾用粉粒状物が不均一に散布された、自然観、質感等に優れた表面外観を有する化粧建築板を、コントロール性、生産性よく製造することができる。
【0023】
請求項8の発明に係る化粧建築板の製造方法は、請求項7の発明方法において、組成物を半乾式成形用組成物とし、該半乾式成形用組成物の少なくとも表層部を構成する組成物中に、表層部を着色する着色材を混入する構成とした。このことにより、請求項7の作用効果に加えて、着色された凹凸模様を有する表層部にこれと異質感、異色感を発現する粉粒状物が不均一に固着した、装飾性に優れた化粧建築板を製造することができる。また、地色を表現する着色塗装が不要となって着色塗装工程を大幅に省略することができる。更に、半乾式成形組成物を成形するものであるため、スラリー状物を脱水成形して未硬化無機質材料マットを形成する湿式抄造の場合のような排水処理の問題を生じることはなく、また混入した着色材が排水に逃げたり、スラリー中で分散不良を起こし易いという問題を生じることもなく、一層生産性良く化粧建築板を製造することができる。
【0024】
【発明の実施の形態】
以下に本発明の実施の形態を図面に基づき説明する。図1は本発明の第1実施形態である装飾用粉粒状物散布装置(A)を説明する縦断面図である。図1より、散布装置(A)は、回転ローラー手段(1)と装飾用粉粒状物供給手段(2)と掻き取り手段(3)とから構成されている。(4)は装飾用粉粒状物、(5)は被塗物である未硬化無機質材料マット、(6)はマット(5)を保持し、成型するときの下型枠で、金属製、或いはFRP等のプラスチック製のプレート、(7)はマット(5)を所定方向に搬送するためのローラーである。
【0025】
装飾用粉粒状物供給手段(2)は、ホッパー形状をしており、装飾用粉粒状物(4)を回転ローラー手段(1)の表面に供給する。尚、図示しないが、この供給手段(2)の下方には、回転ローラー手段(1)表面への粉粒状物(4)の供給量を遮蔽する遮蔽板や、上記供給量を調整するウレタンゴム製等の調整板を設けておくこともできる。
【0026】
回転ローラー手段(1)は、その表面に多数の孔部(8)が設けられており、この孔部(8)に装飾用粉粒状物供給手段(2)から供給された装飾用粉粒状物(4)が保持されるようになっている。多数の孔部(8)は、例えば図2の(a)および(b)の回転ローラー手段(1a)、(1b)にその例を示すように、孔部(8)の平面形状を変えることにより、又はその平面形状に大小を設けることにより、或いはその配置に粗密を設けることにより、或いはそれらを組み合わせることにより、回転ローラー手段(1)から落下する装飾用粉粒状物(4)の落下量を不均一にすることができ、被塗物である未硬化無機質材料マット(5)に粉粒状物(4)を不均一な散布パターンでコントロール性良く散布することができる。
【0027】
図2(a)に示す回転ローラー手段(1a)は、金属製やプラスチック製の中空ドラム体(9)の周面に、大きさの異なる円形状の孔部(8)を、その配置に粗密を設けて穿設した合成ゴム製、軟質合成樹脂製、或いは金属製等の孔部穿設シート(10)を巻きつけることにより形成されている。また図2(b)に示す回転ローラー手段(1b)も同様に上記中空ドラム体(9)の周面に、大きさや平面形状の異なる四角形状の孔部(8)を、その配置に粗密を設けて穿設した孔部穿設シート(10)を巻きつけることにより形成されている。孔部(8)の平面形状は、上記円形状や四角形状に限らず、楕円形状、四角形状以外の多角形状、その他の不定形状であっても良い。また孔部(8)の深さを変化させることもできる。
【0028】
このように、本第1実施形態において例示する回転ローラー手段(1)は、装飾用粉粒状物(4)の所望する散布パターンに合わせて、孔部(8)の平面形状やその配置の粗密を設定した孔部穿設シート(10)を用いることができ、また、所望する散布パターンに合わせてドラム体(9)に巻きつける孔部穿設シート(10)を容易に交換できるので、経済的であり、生産作業性に優れている。
【0029】
尚、回転ローラー手段(1)によって装飾用粉粒状物(4)を不均一に落下散布させるための他の手段として、回転ローラー手段(1)の回転を変速作動や間欠作動可能な物を使用したり、回転ローラー手段(1)に偏芯ローラーを使用することによって行うこともできる。
【0030】
本第1実施形態における掻き取り手段(3)は、その表面に多数の線状突起が密に設けられたブラシロールを用いた例を示してある。このブラシロールは、装飾用粉粒状物供給手段(2)から回転ローラー手段(1)の表面に供給された装飾用粉粒状物(4)の中で、多数の孔部(8)の内部以外の表面部に供給されたものを掻き取って除去したり、孔部(8)の内部に供給される粉粒状物(4)の量を均一化したりするために設けられている。掻き取り手段(3)には、上記ブラシロールの他に、線状突起に替えてウレタンゴム板等の弾性板を表面に設けたロール体や、上記弾性板を回転ローラー手段(1)の表面に近接或いは接して固定したものなどを用いることもできる。
【0031】
以上から本第1実施形態に係る装飾用粉粒状物散布装置(A)は、装飾用粉粒状物供給装置(2)から装飾用粉粒状物(4)を回転ローラー手段(1)表面の多数の平面形状や配置の異なる孔部(8)の内部に供給し、回転ローラー手段(1)の孔部(8)以外の表面に供給された過剰の粉粒状物(4)を、ブラシロールからなる掻き取り手段(3)で回転ローラー手段(1)の表面から除去し、その後、回転ローラー手段(1)の回転に伴って下方位置に来た孔部(8)から、その内部に供給された粉粒状物(4)を落下させることができるので、搬送ローラー(7)で移動中の被塗物である未硬化無機質材料マット(5)の表面に、連続的且つ不均一に粉粒状物(4)を散布することができる。
【0032】
図3は、本発明の第2実施形態である装飾用粉粒状物散布装置(B)を説明する縦断面図である。図3より、この散布装置(B)は、前記第1実施形態に係る装飾用粉粒状物散布装置(A)の下方に、振動板手段(11)が設けられて構成されており、その他の構成は散布装置(A)で説明したものと同じである。
【0033】
振動板手段(11)は、搬送方向と逆方向に傾斜して設けられており、その傾斜角度が調節可能に形成されている。そして、回転ローラー手段(1)の多数の孔部(8)から不均一に落下する装飾用粉粒状物(4)を一瞬受け止めた後、その設定された振動状態や傾斜角度によって、所望の散布パターンになるようにコントロールできるようになっている。
【0034】
即ち、この振動板手段(11)がない場合には、装飾性粉粒状物(4)は回転ローラー手段(1)から被塗物である未硬化無機質材料マット(5)へ直接散布されるが、振動板手段(11)を介在させることにより、その散布パターンをなだらかにする等一層多様に変化させながら、コントロール性良く粉粒状物(4)を散布することが可能になり、好ましいものである。
【0035】
図4は、本発明の第3実施形態である装飾用粉粒状物散布装置(C)を説明する縦断面図である。図4より、この散布装置(C)は、前記第2実施形態に係る装飾用粉粒状物散布装置(B)において、散布装置(B)の前方位置に第2の装飾用粉粒状物(4)を断続的、スポット的に散布する断続散布手段(12)が設けられた構成に形成されている。また、前記散布装置(B)においては、掻き取り手段(3)にブラッシングロールを用いる例を示したが、本散布装置(C)においては、掻き取り手段(3)として、ブラッシングロールに替えてウレタンゴム板を用いており、その他は前記散布装置(B)と同じに構成されている。
【0036】
断続散布手段(12)は、装飾用粉粒状物供給口(13)と圧縮空気供給口(14)と散布口(15)とを備え、圧縮空気の供給を断続的に行って、供給された装飾用粉粒状物(4)をスポット的に散布口(15)から被塗物に散布するものであり、複数基設置したり、移動可能にしておくことが、散布パターンに多様性を持たせるために望ましい。このように本第3実施形態に係る装飾用粉粒状物散布装置(C)は、断続散布装置(12)により、スポット的に装飾用粉粒状物(4)を散布することができ、特に粉粒状物(4)によるアクセント的なぼかし模様や陰影模様を現出させるのに好適である。
【0037】
尚、前記第1実施形態乃至第3実施形態に示した装飾用粉粒状物散布装置(A)、(B)、(C)を被塗物への散布に用いる場合には、図1、図3、図4に示したように1台に限らず複数台用いることができるのは勿論である。また、回転ローラー手段(1)の表面をメッシュ体で覆ったり、回転ローラー手段(1)の直下にメッシュ体を介在させることにより、装飾用粉粒状物(4)の落下を安定させることもできる。
【0038】
次に、前記装飾用粉粒状物を用いて製造する、本発明の化粧建築板の製造方法の実施形態を図5に基づき説明する。図5の(a)は、下型枠(6)の上に、セメント等の自硬性無機質材料と木質材料とを主原料とする芯層用半乾式組成物と、セメント等の自硬性無機質材料と木質材料とを主原料とし、これに着色顔料を混入した表裏層用半乾式組成物とを混合装置によって混合し、フォーミング装置によって、これら組成物を裏面層(5c)、芯層(5b)、表面層(5a)の順に散布堆積し、表裏面に着色材が混入された、3層構成の未硬化無機質材料マット(5)を半乾式成形する工程を示す。
【0039】
ここで用いることのできる自硬性無機質材料として、ポルトランドセメント、スラグセメント、アルミナセメント、シリカセメント、フライアッシュセメント、或いはこれらセメント類に珪砂、シラスなどのケイ酸質材料を混合したもの、炭酸マグネシウム等を挙げることができる。
【0040】
また、木質材料としては、木片、木材フレーク、木繊維束、古紙繊維、パルプ、漂白クラフトパルプ、鋸屑、木粉、或いは木質セメント板廃材の粉砕物などを用いることができる。芯層(5b)用の木質材料には木片、木フレークのような粗い木質材料を主に用いて軽量にし、表裏面層(5a)(5c)用の木質材料には芯層(5c)に用いるものよりも細かい木質材料を用いて表裏層の密度を高め、強度的性質を向上させるのが好ましい。また表面層(5a)には、後述するオートクレーブ処理時に木質材料の色が表面層(5a)に染みのように現出して表面外観を悪くすることがあるので、漂白クラフトパルプのように着色していない木質材料を用いて、このような染みの現出を防止することもできる。
【0041】
着色顔料としては、耐候性に優れている点で無機質系顔料が好ましく、ベンガラなどの天然、合成の酸化鉄類、酸化チタン、カーボンブラック、酸化クロムなどを用いることができ、またこれらの無機質系顔料に一部有機質顔料を加えて用いることもできる。着色顔料を混入する場合には、本実施形態では表裏面層(5a)(5c)用組成物に混入する例を示したが、表面層(5a)用組成物に混入するだけでも良いのは勿論である。
【0042】
その他の添加物として、パーライト、シラスバルーン等の無機発泡体、或いは硬化促進剤、エフロレッセンス防止剤、耐水性付与剤などのケミカル類等公知の添加物を添加しておくことができる。
【0043】
芯層(5b)用半乾式組成物の具体的な一例として、ポルトランドセメント50重量部、珪砂等の珪酸質材料20重量部、木材フレークを主とする木質材料15重量部、パーライト等の無機発泡体15重量部、水42重量部からなるものを挙げることができる。また、表裏層(5a)(5c)用半乾式組成物の具体的な一例として、ポルトランドセメント50重量部、珪酸質材料18重量部、木フレークとパルプが約半々の木質材料15重量部、パーライト等の無機発泡体15重量部、着色顔料2重量部、水38重量部からなるものを挙げることができる。
【0044】
次に、得られた未硬化無機質材料マット(5)の表面に、前記実施形態1〜3で説明した装飾用粉粒状物散布装置(A)、(B)、(C)のいずれかを用いて、装飾用粉粒状物(4)を不均一に散布する。図5の(b)は、未硬化無機質材料マット(5)に装飾用粉粒状物(4)が不均一に散布された状態を示している。装飾用粉粒状物散布装置による未硬化無機質材料マット(5)への散布工程の説明は、前記実施形態1〜3で述べた通りであり省略する。
【0045】
ここにおいて、用いる装飾用粉粒状物(4)は、その材質や形状が特に限定されるものではなく、例えば、鉱石の粉粒体、砂、着色砂、人工着色骨材、陶磁器を粉砕した粉粒体、雲母、ロックウール粉砕物、ガラス粉砕物、着色樹脂片等を挙げることができる。このような装飾用粉粒状物(4)は、材質や形状の異なる複数種を組み合わせて用いることもできる。
【0046】
次に、図5の(c)は、上記で得られた、装飾用粉粒状物が不均一に散布された未硬化無機質材料マット(5)の表面に、所定の凹凸模様(16a)(16b)が設けられたエンボス型枠(17)を載置し、未硬化無機質材料マット(5)を加圧圧締する工程を示す。この加圧圧締工程は、下型枠(6)の上に未硬化無機質材料マット(5)を載置し、その上にエンボス型枠(17)を載置したものを一組として複数組を堆積し、これを所定圧力で冷圧圧締することにより行うことができる。
【0047】
この加圧圧締により、図5の(d)および(e)に示す通り、未硬化無機質材料マット(5)はその全体厚さが減じられて所定厚さに形成される。そして、その着色表面層(5a)には、エンボス型枠(14)によって、目地溝凹部(18a)とその凹部(18a)で区画された化粧面凸部(18b)と化粧面凸部(18b)の表面に石肌状等の細かい凹凸が形成され、さらにこれらの着色表面層(5a)の表面に、着色表面層とは色調の異なる装飾用粉粒状物(4)が不均一に分散されて、自然観、質感に優れた化粧建築板(D)を得ることができる。
【0048】
このようにして得られた化粧建築板(D)は、常法によりオートクレーブ養生されるが、このオートクレーブ養生の前或いは後に、その表面全面にシーラー塗装等の合成樹脂塗料によるクリアー塗装を施しておく。オートクレーブ養生前にクリアー塗装する場合は、図5の(b)の装飾用粉粒状物(4)の散布後、図5の(c)の加圧圧締時、或いは図5の(d)の加圧圧締後に行うことができ、図5の(c)の加圧圧締時に行う場合には、エンボス型材(14)の押圧面に離型材とクリアー塗料を塗布しておき、加圧圧締と同時にクリアー塗料を未硬化無機質材料マットに塗布することによって行うことができる。このようにオートクレーブ養生前にクリアー塗装やシーラー塗装をしておくと、オートクレーブ養生時にエフロレッセンスが発生するのを抑制することができる。
【0049】
尚、本実施形態の化粧建築板(D)の製造方法では、未硬化無機質材料マット(5)を半乾式成形で形成する例を示したが、これに限らず湿式抄造スラリーを調整し、このスラリーを長網式や丸網式抄造装置により抄造し、脱水処理した抄造マットを未硬化無機質材料マット(5)として用いることもできる。ただし、この場合には、排水処理の問題、着色材を混入する場合にスラリーへの着色材の分散性が半乾式成形に較べて劣るという問題、加圧圧締時に装飾用粉粒状物が抄造マット内部に埋設され易く半乾式成形に較べて表面への現出量が少なくなるという問題等を有しており、化粧建築板(D)の表層を着色したり、この表層に装飾用粉粒状物を散布して装飾価値を向上させるためには、半乾式成形で行う方が望ましい。
【0050】
また、本実施形態では、表裏面層(5a)(5c)用の組成物に着色材を混入した例を示した。着色材を混入しておくことにより地色を表現できるので、後工程で複雑な着色塗装を省くことができ生産性がよく、着色塗装のように塗膜劣化による外観不良の発生の危惧もなく、永年良好な着色外観を保持することができるので好ましい。また、散布した装飾用粉粒状物(4)が着色塗装によって隠蔽されることがなく、表面層(5a)の着色地色と相俟って、自然な風合いを一層現出させることができる。
【0051】
【発明の効果】
以上の説明から明らかなように、本願発明の装飾用粉粒状物散布装置は、多数の孔部を表面に有し、該孔部から不均一に装飾用粉粒状物を落下させる回転ローラー手段を備えているので、被塗物表面に石柄調などの装飾用粉粒状物による自然な不均一感、素材感を生産性良く現出させることができる。また、多数の孔部の平面形状を異型状に形成しておいたり、孔部の配置に粗密を設けておくと、孔部から落下する粉粒状物の不均一性を孔部の平面形状やその配置の粗密によってコントロールしながら良好に行うことができる。また、回転ローラー手段に近接して、該回転ローラー手段の多数の孔部以外の表面に供給された過剰な装飾用粉粒状物を掻き取るための掻き取り手段を設けておくと、一層コントロール性良く装飾用粉粒状物の不均一な散布を行うことができる。更には、回転ローラー手段の下方に、回転ローラー手段の孔部から落下した装飾用粉粒状物に振動を与える振動板手段を設けておくと、一層多様な散布パターンに装飾用粉粒状物を散布することができる。また、装飾用粉粒状物散布装置の前方に、第2の装飾用粉粒状物を断続的に散布する断続散布手段を備えておくと、装飾用粉粒状物によってぼかし模様や陰影模様等を一層強調的に現出させることができる。
【0052】
また、本願発明の化粧建築板の製造方法は、無機質自硬性材料又は無機質自硬性材料と木質材料とを主成分とする組成物をフォーミングして形成した未硬化無機質材料マットの表面に、本願発明に係る装飾用粉粒状物散布装置により装飾用粉粒状物を不均一状態に散布した後、該未硬化無機質材料マットをエンボスプレス成形するものであるので、目地溝調や石肌柄調等の凹凸模様が表面に形成され、更にその表面に装飾用粉粒状物が不均一に散布された、自然観、質感等に優れた表面外観を有する化粧建築板を、コントロール性、生産性よく製造することができる。そして組成物を半乾式成形用組成物とし、該半乾式成形用組成物の少なくとも表層部を構成する組成物中に、表層部を着色する着色材を混入する構成とした場合には、着色された凹凸模様を有する表層部にこれと異質感、異色感を発現する粉粒状物が不均一に固着した、装飾性に優れた化粧建築板を製造することができる。また、着色塗装が不要となって着色塗装工程を大幅に省略することができる。更に湿式抄造に比べて排水処理の問題、着色材の排水への逃げの問題、スラリー中で着色材が分散不良を起こし易いという問題がなく、一層生産性良く化粧建築板を製造することができる。
【図面の簡単な説明】
【図1】本発明の第1実施形態である、装飾用粉粒状物散布装置(A)を説明する縦断面図。
【図2】本発明の回転ロール体の例(1a)、(1b)を示す斜視図。
【図3】本発明の第2実施形態である、装飾用粉粒状物散布装置(B)を説明する縦断面図。
【図4】本発明の第3実施形態である、装飾用粉粒状物散布装置(C)を説明する縦断面図。
【図5】本発明の化粧建築板(D)の製造方法の工程を説明する説明図
【符号の説明】
(1) 回転ローラー手段
(2) 装飾用粉粒状物供給手段
(3) 掻き取り手段
(4) 装飾用粉粒状物
(5) 未硬化無機質材料マット
(6) 下型枠
(8) 孔部
(9) ドラム体
(10) 孔部穿設シート
(11) 振動板手段
(12) 断続散布手段
(13) 装飾用粉粒状物供給口
(14) 圧縮空気供給口
(15) 散布口
(17) エンボス型枠
(18a) 目地溝凹部
(18b) 化粧面凸部
[0001]
BACKGROUND OF THE INVENTION
In particular, the present invention is a decorative powder and particulate material spraying device suitable for use in the manufacture of a decorative building board having a surface appearance such as a stone pattern tone and tile pattern tone by spraying a decorative powder particulate material and the spraying thereof. The present invention relates to a method for manufacturing a decorative building board using the apparatus.
[0002]
[Prior art]
Conventionally, cosmetics such as exterior wall materials that have been formed on decorative surfaces such as stone pattern, tile pattern, brick pattern, etc., by forming an uneven pattern on the surface of an inorganic substrate and further coloring and printing on the surface Architectural boards are well known.
[0003]
Such a decorative building board is made by pressing a surface of an uncured inorganic mat formed by a wet papermaking method or a semi-dry molding method with a mold roll or a template, using a composition mainly composed of a self-hardening inorganic material such as cement. After applying the desired uneven pattern, applying the base sealer on the surface, and then performing decorative processing such as painting with colored paint, spot coating, or printing with ink, and transparent clear coating on the top layer It is manufactured.
[0004]
However, since such a decorative building board is decorated by painting or printing, it is insufficient and limited in order to reveal the texture and natural non-uniformity of stones and tiles. . In the case of the above-mentioned conventional paint finish, the adhesion between the base material and the coating film may deteriorate due to long-term use, and the coating film may be damaged, such as cracking and peeling, and the weather resistance is not sufficient. . Furthermore, when manufacturing a decorative building board with this paint finish, it requires many processes such as painting processes such as undercoating, intermediate coating, topcoating, and top coating, and processes such as storage, blending, and drying of paints. There was a problem of getting worse.
[0005]
Therefore, for example, as shown in JP-A-5-194059, JP-A-11-226491, and JP-A-6-155424, patterning is performed by fixing a powdery granular material such as silica sand to a substrate of a decorative building board. It is known that this powdery granular material improves the natural appearance and texture, simplifies the painting process, or improves the weather resistance.
[0006]
In addition, as means for dispersing such a powdery granular material, for example, as shown in JP-A-5-317794, JP-A-5-23636, and JP-A-7-171482, a powdery granular material such as silica sand There are known means capable of evenly dispersing the material, or means capable of evenly dispersing even when a concavo-convex pattern is formed on the object to be coated.
[0007]
[Patent Document 1]
Japanese Patent Laid-Open No. 5-194059
[0008]
[Patent Document 2]
JP-A-11-226491
[0009]
[Patent Document 3]
JP-A-6-155424
[0010]
[Patent Document 4]
Japanese Patent Laid-Open No. 5-317794
[0011]
[Patent Document 5]
JP-A-5-23636
[0012]
[Patent Document 6]
JP-A-7-171482
[0013]
[Problems to be solved by the invention]
However, it is difficult for the above-mentioned conventional means for spraying granular materials in a decorative building board or the like to sufficiently exhibit a natural non-uniformity such as a stone pattern as a result of the powder particles being uniformly distributed. Also, it was not possible to control the non-uniform dispersion of the granular material.
[0014]
The present invention has been made in view of the above-mentioned conventional drawbacks, and it is possible to disperse the granular material with good controllability and non-uniformity so that a natural non-uniformity appears on the surface of the decorative building board. An object is to provide an object spraying device and a method for manufacturing a decorative building board using the spraying device.
[0015]
[Means for Solving the Problems]
In order to achieve this object, the decorative powder particle disperser according to the first aspect of the present invention has a number of holes on the surface, and rotation for dropping the decorative powder particles unevenly from the holes. It was set as the structure provided with the roller means and the decoration granular material supply means which supplies the decoration granular material to many holes of this rotation roller means.
[0016]
According to this, the decorative granular material supplied from the supply means such as a hopper is once held in a number of holes of the rotary roller means, and then sequentially and non-uniformly as the rotary roller means rotates. Since it falls and sprays on the surface of the object to be coated, natural unevenness and texture can be revealed on the surface of the object to be coated, such as stone-patterned tones, and a natural blurring pattern. It is also possible to form a shading pattern or the like.
[0017]
In addition, the decorative granular material spraying device according to the invention of claim 2 has a configuration in which the planar shape of a large number of holes is formed into a different shape or a shape including a different shape. This makes it possible to change the amount of the decorative granular material supplied and held in each of the large number of holes. In addition to the effect of claim 1, nonuniformity of the granular material falling from the holes can be reduced. This can be performed while being controlled by the planar shape of the hole. Further, it is possible to easily give more diversity to the non-uniformity by changing the shape of the hole.
[0018]
The ornamental granular material spraying device according to the invention of claim 3 has a configuration in which a density difference is provided in the arrangement of the numerous holes. According to this, from the part which arrange | positioned many hole parts densely, more granular powder for decoration can be fall-dispersed than the part arrange | positioned roughly, In addition to the effect of Claim 1 or 2, In addition, it is possible to spray the decorative granular material in various non-uniform states with good controllability.
[0019]
The apparatus for dispersal of decorative powder particles according to the invention of claim 4 is for scraping off the decorative powder particles supplied to the surface other than the numerous holes of the rotation roller means in the vicinity of the rotation roller means. It was set as the structure provided with the scraping means. By this, it is possible to prevent the excessive decorative powder and granular material supplied to the surface other than the numerous holes of the rotating roller means from falling on the surface of the object to be coated. In addition to the effect, it is possible to perform the spraying of the decorative granular material with better controllability.
[0020]
The ornamental granular material spraying apparatus according to the invention of claim 5 is configured to include a vibrating plate means for applying vibration to the decorative powdery granular material dropped from a large number of holes of the rotating roller means and spraying it. As a result, the granular material dropped from the rotating roller means is not directly sprayed on the object to be coated, but once dropped on the diaphragm means, it can be sprayed while changing its spraying speed and spraying pattern. Therefore, in addition to the effects of the first to fourth aspects, variations in the spray pattern can be further expanded.
[0021]
Moreover, the decorative powder-and-particles spraying device according to the invention of claim 6 disperses the second decorative powder-particles intermittently in front of the decorative powder-and-particles spraying device according to claims 1 to 5. It was set as the structure provided with the intermittent spraying means. Thus, in addition to the effects of the first to fifth aspects, the second decorative powder particles are intermittently and spot-sprayed on the object to be coated with the first decorative powder particles. As a result, it is possible to emphasize a blurry pattern and a shaded pattern with a natural view.
[0022]
The manufacturing method of the decorative building board according to the invention of claim 7 is provided on the surface of an uncured inorganic material mat formed by forming an inorganic self-hardening material or a composition mainly composed of an inorganic self-hardening material and a wood material. The decorative powder granule is sprayed in a non-uniform state by the decorative powder granule spraying device according to any one of claims 1 to 6, and then the uncured inorganic material mat is emboss press-molded. As a result, it is possible to disperse the decorative granular material from above the surface of the inorganic material mat in a non-uniform state, and to fix the granular material at the same time as the uneven formation of the inorganic material mat by the embossing type, so A decorative building board having a surface appearance excellent in nature, texture, etc., on which a concavo-convex pattern such as skin pattern is formed on the surface, and decorative powder particles are unevenly distributed on the surface, controllability, It can be manufactured with high productivity.
[0023]
A method for producing a decorative building board according to an invention of claim 8 is the method of the invention of claim 7, wherein the composition is a semi-dry molding composition and constitutes at least a surface layer portion of the semi-dry molding composition. It was set as the structure which mixes the coloring material which colors a surface layer part in it. In this way, in addition to the effects of claim 7, makeup with excellent decorativeness, in which a powdery granular material that expresses a different texture and color is non-uniformly fixed on the surface layer portion having a colored uneven pattern. Building boards can be manufactured. Moreover, the coloring painting which expresses a ground color becomes unnecessary, and a coloring painting process can be skipped significantly. Furthermore, since it is a semi-dry molding composition, it does not cause the problem of wastewater treatment as in the case of wet papermaking in which the slurry is dehydrated and formed into an uncured inorganic material mat, and is not mixed. Thus, it is possible to produce a decorative building board with higher productivity without causing the problem that the colored material escapes to the drainage or easily causes poor dispersion in the slurry.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal cross-sectional view for explaining a decorative powder and particle material scattering apparatus (A) according to a first embodiment of the present invention. As shown in FIG. 1, the spraying device (A) is composed of rotating roller means (1), decorative particulate supply means (2), and scraping means (3). (4) is a decorative granular material, (5) is an uncured inorganic material mat that is an object to be coated, and (6) is a lower mold frame for holding and molding the mat (5). A plastic plate such as FRP, (7) is a roller for conveying the mat (5) in a predetermined direction.
[0025]
The decorative particulate supply means (2) has a hopper shape and supplies the decorative particulate (4) to the surface of the rotating roller means (1). Although not shown in the drawing, below this supply means (2), a shielding plate for shielding the supply amount of the granular material (4) to the surface of the rotating roller means (1) and urethane rubber for adjusting the supply amount are provided. An adjustment plate such as a product can also be provided.
[0026]
The rotating roller means (1) is provided with a large number of holes (8) on the surface thereof, and the decorative particles supplied from the decorative powder supply means (2) to the holes (8). (4) is held. A large number of holes (8) can change the planar shape of the holes (8), as shown for example in the rotating roller means (1a) and (1b) of FIGS. 2 (a) and 2 (b). The amount of fall of the decorative granular material (4) falling from the rotating roller means (1) by providing a large or small size in the planar shape, or by providing a coarse or dense arrangement, or by combining them Can be made non-uniform, and the particulate matter (4) can be sprayed on the uncured inorganic material mat (5), which is the object to be coated, in a non-uniform spray pattern with good controllability.
[0027]
The rotating roller means (1a) shown in FIG. 2 (a) has circular holes (8) of different sizes on the circumferential surface of a metal or plastic hollow drum body (9), and the arrangement thereof is coarse and dense. It is formed by winding a hole-piercing sheet (10) made of synthetic rubber, soft synthetic resin, or metal made by providing a hole. Similarly, in the rotating roller means (1b) shown in FIG. 2 (b), rectangular holes (8) having different sizes and plane shapes are formed on the peripheral surface of the hollow drum body (9), and the arrangement thereof is made dense. It is formed by winding a hole-piercing sheet (10) provided and drilled. The planar shape of the hole (8) is not limited to the circular shape or the rectangular shape, but may be an elliptical shape, a polygonal shape other than the rectangular shape, or any other indefinite shape. The depth of the hole (8) can also be changed.
[0028]
As described above, the rotating roller means (1) exemplified in the first embodiment is configured so that the planar shape of the hole portion (8) and the density thereof are adjusted in accordance with the desired spray pattern of the decorative granular material (4). Can be used, and the hole-perforated sheet (10) wound around the drum body (9) can be easily replaced in accordance with a desired spraying pattern. And excellent in workability.
[0029]
In addition, as another means for non-uniformly dropping and dispersing the decorative granular material (4) by the rotating roller means (1), the rotating roller means (1) can be rotated or intermittently operated. Or by using an eccentric roller for the rotating roller means (1).
[0030]
The scraping means (3) in the first embodiment shows an example using a brush roll having a large number of linear protrusions densely provided on the surface thereof. This brush roll is a decorative powder granule (4) supplied from the decorative powder supply means (2) to the surface of the rotating roller means (1), except for the inside of many holes (8). It is provided to scrape off and remove what is supplied to the surface portion, and to uniformize the amount of the granular material (4) supplied to the inside of the hole (8). The scraping means (3) includes, in addition to the brush roll, a roll body provided with an elastic plate such as a urethane rubber plate on the surface instead of the linear protrusion, and the elastic plate on the surface of the rotating roller means (1). It is also possible to use the one fixed close to or in contact with.
[0031]
From the above, the ornamental granular material spraying device (A) according to the first embodiment removes the decorative granular material (4) from the decorative powder / particle supply device (2) on the surface of the rotating roller means (1). The excess powder and particulate matter (4) supplied to the inside of the hole (8) having a different plane shape and arrangement and supplied to the surface other than the hole (8) of the rotating roller means (1) is removed from the brush roll. Is removed from the surface of the rotating roller means (1) by the scraping means (3), and then supplied to the inside through the hole (8) which has come to a lower position as the rotating roller means (1) rotates. Since the powdered granular material (4) can be dropped, the powdered granular material is continuously and non-uniformly formed on the surface of the uncured inorganic material mat (5), which is the object to be coated, being moved by the transport roller (7). (4) can be sprayed.
[0032]
FIG. 3: is a longitudinal cross-sectional view explaining the decoration granular material spreading | diffusion apparatus (B) which is 2nd Embodiment of this invention. From FIG. 3, this spraying device (B) is configured by providing a diaphragm means (11) below the decorative powder particle spraying device (A) according to the first embodiment. The configuration is the same as that described for the spraying device (A).
[0033]
The diaphragm means (11) is provided so as to be inclined in the direction opposite to the conveying direction, and the inclination angle thereof is adjustable. And after receiving for a moment the ornamental granular material (4) that falls non-uniformly from the numerous holes (8) of the rotating roller means (1), the desired spraying is performed according to the set vibration state and inclination angle. It can be controlled to become a pattern.
[0034]
In other words, in the absence of the diaphragm means (11), the decorative granular material (4) is directly sprayed from the rotating roller means (1) to the uncured inorganic material mat (5) which is the object to be coated. By interposing the diaphragm means (11), it becomes possible to spray the granular material (4) with good controllability while changing the spraying pattern more smoothly and so on, which is preferable. .
[0035]
FIG. 4: is a longitudinal cross-sectional view explaining the powdered granular material spraying apparatus (C) for decoration which is 3rd Embodiment of this invention. From FIG. 4, this spraying device (C) is the second decorative powder (4) in the front position of the spraying device (B) in the decorative powder spraying device (B) according to the second embodiment. ) Is intermittently and spot-sprayed, and is provided with an intermittent spraying means (12). In the spraying device (B), the brushing roll is used as the scraping means (3). However, in the spraying device (C), the scraping means (3) is replaced with the brushing roll. A urethane rubber plate is used, and the others are configured in the same manner as the spraying device (B).
[0036]
The intermittent spraying means (12) includes a decorative particulate supply port (13), a compressed air supply port (14), and a spray port (15), and is supplied by intermittently supplying compressed air. The decorative powder particles (4) are spot-sprayed from the spray port (15) to the object to be coated, and it is possible to provide a variety of spray patterns by installing multiple units or making them movable. Desirable for. As described above, the decorative powder granular material spraying device (C) according to the third embodiment can spray the decorative powder granular material (4) in a spot manner by the intermittent spraying device (12). It is suitable for making an accented blurring pattern and shading pattern appear by the granular material (4).
[0037]
In addition, in the case of using the decorative powder and granular material spraying devices (A), (B), and (C) shown in the first to third embodiments for spraying an object, FIG. 3. As shown in FIG. 4, it is needless to say that not only one but also a plurality can be used. Moreover, the fall of the decoration granular material (4) can also be stabilized by covering the surface of the rotating roller means (1) with a mesh body, or interposing a mesh body directly under the rotating roller means (1). .
[0038]
Next, an embodiment of the method for producing a decorative building board according to the present invention, which is produced using the above-mentioned decorative particulate material, will be described with reference to FIG. (A) in FIG. 5 shows a semi-dry composition for a core layer mainly composed of a self-hardening inorganic material such as cement and a wood material on the lower mold (6), and a self-hardening inorganic material such as cement. And a semi-dry composition for the front and back layers, in which a color pigment is mixed, are mixed with a mixing device, and these compositions are mixed with the back layer (5c) and the core layer (5b) using a forming device. The process of carrying out the semi-dry molding of the uncured inorganic material mat (5) having a three-layer structure in which the surface layer (5a) is spread and deposited in order and the coloring material is mixed on the front and back surfaces is shown.
[0039]
Examples of self-hardening inorganic materials that can be used here include Portland cement, slag cement, alumina cement, silica cement, fly ash cement, or a mixture of these cements with siliceous materials such as silica sand and shirasu, magnesium carbonate, etc. Can be mentioned.
[0040]
As the wood material, wood pieces, wood flakes, wood fiber bundles, waste paper fibers, pulp, bleached kraft pulp, sawdust, wood powder, or pulverized wood cement board waste can be used. The wood material for the core layer (5b) is mainly made of a rough wood material such as a piece of wood or wood flakes to reduce the weight, and the wood material for the front and back layers (5a) and (5c) is made of the core layer (5c). It is preferable to increase the density of the front and back layers by using a finer wood material than that used to improve the strength properties. In addition, the surface layer (5a) may be colored like bleached kraft pulp because the color of the woody material may appear like a stain on the surface layer (5a) during autoclave processing, which will be described later. It is also possible to prevent the appearance of such stains by using non-wood materials.
[0041]
As the coloring pigment, inorganic pigments are preferable in terms of excellent weather resistance, and natural and synthetic iron oxides such as Bengala, titanium oxide, carbon black, chromium oxide, etc. can be used, and these inorganic pigments can also be used. It is also possible to add an organic pigment to the pigment and use it. In the case where a color pigment is mixed, in the present embodiment, an example of mixing in the composition for the front and back layers (5a) and (5c) is shown, but it may be mixed only in the composition for the surface layer (5a). Of course.
[0042]
As other additives, known additives such as inorganic foams such as perlite and shirasu balloon, or chemicals such as a curing accelerator, an efflorescence inhibitor, and a water resistance imparting agent can be added.
[0043]
Specific examples of the semi-dry composition for the core layer (5b) include 50 parts by weight of Portland cement, 20 parts by weight of a siliceous material such as silica sand, 15 parts by weight of a wood material mainly composed of wood flakes, and inorganic foam such as perlite. Examples thereof include 15 parts by weight of body and 42 parts by weight of water. Further, as a specific example of the semi-dry composition for the front and back layers (5a) and (5c), 50 parts by weight of Portland cement, 18 parts by weight of siliceous material, 15 parts by weight of woody material of wood flakes and pulp, pearlite Examples thereof include 15 parts by weight of an inorganic foam, 2 parts by weight of a color pigment, and 38 parts by weight of water.
[0044]
Next, on the surface of the obtained uncured inorganic material mat (5), one of the decorative powder and particulate matter dispersing devices (A), (B), and (C) described in the first to third embodiments is used. Then, the decorative granular powder (4) is sprayed unevenly. (B) of FIG. 5 has shown the state by which the granular material for decoration (4) was disperse | distributed nonuniformly to the uncured inorganic material mat (5). The description of the spraying process to the uncured inorganic material mat (5) by the decorative powder particle spraying device is the same as described in the first to third embodiments, and will be omitted.
[0045]
Here, the decorative powder granule (4) to be used is not particularly limited in its material and shape. For example, powder of ore powder, sand, colored sand, artificial colored aggregate, and ceramic pulverized Examples thereof include granules, mica, rock wool pulverized material, glass pulverized material, and colored resin pieces. Such a decorative granular material (4) can be used in combination of a plurality of different materials and shapes.
[0046]
Next, (c) of FIG. 5 shows a predetermined uneven pattern (16a) (16b) on the surface of the uncured inorganic material mat (5) obtained as described above, in which the decorative powder particles are dispersed unevenly. The embossing formwork (17) provided with) is placed and the uncured inorganic material mat (5) is pressed and pressed. In this pressing and pressing step, a plurality of sets are formed by placing the uncured inorganic material mat (5) on the lower mold (6) and the embossing mold (17) on it. This can be done by depositing and cold pressing with a predetermined pressure.
[0047]
By this pressing and pressing, as shown in FIGS. 5D and 5E, the uncured inorganic material mat (5) is formed to a predetermined thickness by reducing the overall thickness. Then, the colored surface layer (5a) is provided with an embossed mold (14) and a decorative groove convex portion (18b) and a decorative surface convex portion (18b) partitioned by the joint groove concave portion (18a) and the concave portion (18a). ) Is formed on the surface of the colored surface layer (5a), and the decorative powder particles (4) having a color tone different from that of the colored surface layer are unevenly dispersed on the surface of the colored surface layer (5a). Thus, a decorative building board (D) excellent in nature and texture can be obtained.
[0048]
The decorative building board (D) thus obtained is autoclaved by a conventional method. Before or after the autoclave curing, the entire surface is subjected to clear coating with a synthetic resin paint such as sealer coating. . In the case of clear coating before the autoclave curing, after spraying the decorative granular material (4) in FIG. 5 (b), during press-clamping in FIG. 5 (c), or in FIG. 5 (d) This can be performed after pressing, and in the case of press-clamping in FIG. 5 (c), a release material and a clear paint are applied to the pressing surface of the embossing mold material (14), and clearing is performed simultaneously with press-clamping. This can be done by applying the paint to an uncured inorganic material mat. Thus, if clear coating or sealer coating is performed before autoclave curing, it is possible to suppress the occurrence of efflorescence during autoclave curing.
[0049]
In addition, in the manufacturing method of the decorative building board (D) of the present embodiment, an example in which the uncured inorganic material mat (5) is formed by semi-dry molding has been shown. It is also possible to use a papermaking mat obtained by making a slurry with a long-mesh type or a round-net type papermaking apparatus and performing a dehydration treatment as the uncured inorganic material mat (5). However, in this case, there is a problem of wastewater treatment, a problem that the dispersibility of the coloring material in the slurry is inferior to that of the semi-dry molding when the coloring material is mixed, and the decorative powder and granular material is made into a paper mat when pressed. It has a problem that it is easy to be embedded inside, and the amount of appearance on the surface is smaller than that of semi-dry molding, and the surface layer of the decorative building board (D) is colored or the decorative granular material on this surface layer In order to improve the decorative value by spraying, it is desirable to carry out by semi-dry molding.
[0050]
Moreover, in this embodiment, the example which mixed the coloring material in the composition for front and back layers (5a) (5c) was shown. Since the ground color can be expressed by mixing the coloring material, complicated coloring coating can be omitted in the subsequent process, and the productivity is good, and there is no risk of appearance failure due to coating deterioration like colored coating. It is preferable because a good colored appearance can be maintained for many years. Moreover, the sprinkled decorative powder particles (4) are not concealed by the colored coating, and the natural texture can be further revealed in combination with the colored ground color of the surface layer (5a).
[0051]
【The invention's effect】
As is apparent from the above description, the decorative powder particle disperser of the present invention has a number of holes on the surface, and rotary roller means for dropping the decorative powder particles unevenly from the holes. Since it is provided, it is possible to display a natural non-uniformity and a feeling of material with a high productivity on the surface of the object to be coated, such as a stone-patterned texture. In addition, if the planar shape of a large number of hole portions is formed in an irregular shape, or if the arrangement of the hole portions is provided with an irregularity, the non-uniformity of the particulate matter falling from the hole portions can be reduced. It can be carried out well while being controlled by the density of the arrangement. Further, if a scraping means is provided near the rotating roller means to scrape excess decorative powder supplied to the surface other than the numerous holes of the rotating roller means, further controllability is provided. It is possible to disperse unevenly fine powder particles for decoration well. Furthermore, if a vibrating plate means is provided below the rotating roller means for applying vibration to the decorative powder particles falling from the hole of the rotating roller means, the decorative powder particles can be dispersed in a wider variety of spray patterns. can do. In addition, if there is an intermittent spraying means for intermittently spraying the second decorative powder and granular material in front of the decorative powder and granular material spraying device, the decorative powder and granular material can further blur or shade the pattern. It can be highlighted.
[0052]
In addition, the method for producing a decorative building board of the present invention includes the invention of the present invention on the surface of an uncured inorganic material mat formed by forming an inorganic self-hardening material or a composition mainly composed of an inorganic self-hardening material and a wood material. Since the decorative powder granule is sprayed in a non-uniform state by the decorative powder granule spraying apparatus according to the present invention, the uncured inorganic material mat is embossed and press-molded. Produces a decorative building board that has a surface appearance excellent in nature, texture, etc., with an uneven pattern formed on the surface, and decorative powder particles unevenly distributed on the surface, with good controllability and productivity. be able to. When the composition is a semi-dry molding composition, and the composition constituting at least the surface layer portion of the semi-dry molding composition is mixed with a coloring material for coloring the surface layer portion, the composition is colored. It is possible to manufacture a decorative building board with excellent decorativeness, in which a granular material that expresses a different texture and color is non-uniformly fixed to a surface layer portion having a concavo-convex pattern. In addition, the color painting process is unnecessary, and the color painting process can be largely omitted. Furthermore, there are no problems of wastewater treatment, problems of escape of colorants to drainage, and problems that colorants are liable to cause poor dispersion in slurry compared to wet papermaking, and it is possible to produce a decorative building board with higher productivity. .
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a longitudinal sectional view illustrating a decorative powder / particles dispersion apparatus (A) according to a first embodiment of the present invention.
FIG. 2 is a perspective view showing examples (1a) and (1b) of a rotating roll body according to the present invention.
FIG. 3 is a longitudinal sectional view for explaining a decorative powder / particles dispersion apparatus (B) according to a second embodiment of the present invention.
FIG. 4 is a longitudinal sectional view for explaining a decorative powder / particles dispersion apparatus (C) according to a third embodiment of the present invention.
Explanatory drawing explaining the process of the manufacturing method of the decorative building board (D) of this invention.
[Explanation of symbols]
(1) Rotating roller means
(2) Powder supply means for decoration
(3) Scraping means
(4) Powdered granular material for decoration
(5) Uncured inorganic material mat
(6) Lower formwork
(8) Hole
(9) Drum body
(10) Hole drilling sheet
(11) Diaphragm means
(12) Intermittent spraying means
(13) Powder and granular material supply port for decoration
(14) Compressed air supply port
(15) Spray port
(17) Embossed formwork
(18a) Joint groove recess
(18b) Decorative face convex part

Claims (6)

多数の孔部を表面に有し、該孔部から不均一に装飾用粉粒状物を落下させる孔部穿設シートがドラム体の周囲に形成されている回転ローラー手段と、該回転ローラー手段に形成された孔部穿設シートの多数の孔部に装飾用粉粒状物を供給する装飾用粉粒状物供給手段とを備えていて,
該孔部穿設シートの多数の孔部の平面形状が異形状又は、異形状を含む形状に形成されていて,
該孔部穿設シートの多数の孔部の配置に粗密差が設けられていることを特徴とする装飾用粉粒状物散布装置。
It has a number of holes in the surface, and rotating the roller means holes bored sheet dropping the unevenly decorative powder particulates from the hole portion is formed around the drum body, the said rotating roller means A decorative powder and granular material supplying means for supplying the decorative powder and granular material to a large number of holes of the formed hole-piercing sheet ,
The planar shape of a large number of holes in the hole-piercing sheet is formed in a different shape or a shape including a different shape,
An ornamental powder and particulate matter spraying device, wherein a difference in density is provided in the arrangement of a large number of holes in the hole-piercing sheet .
回転ローラー手段に近接して、該回転ローラー手段の孔部穿設シートの多数の孔部以外の表面に供給された装飾用粉粒状物を掻き取るための掻き取り手段を備えていることを特徴とする請求項1に記載の装飾用粉粒状物散布装置。 Providing scraping means for scraping off the decorative granular material supplied to the surface other than the numerous holes of the hole-piercing sheet of the rotating roller means in the vicinity of the rotating roller means. The ornamental granular material spraying device according to claim 1 . 回転ローラー手段の下方に、回転ローラー手段の孔部穿設シートの孔部から落下した装飾用粉粒状物に振動を加えて散布する振動板手段を備えていることを特徴とする請求項1乃至に記載の装飾用粉粒状物散布装置。2. A vibration plate means for applying a vibration to the decorative powder particles dropped from the hole portion of the hole-piercing sheet of the rotation roller means and applying the vibration powder means to the lower portion of the rotation roller means. 2. The decorative powder and granular material dispersion apparatus according to 2. 請求項1乃至に記載の装飾用粉粒状物散布装置の前方に、第2の装飾用粉粒状物を断続的散布する断続散布手段を備えていることを特徴とする装飾用粉粒状物散布装置。In front of the decorative powder granules sprinkling device according to any one of claims 1 to 3, decorative powder granules, characterized in that it comprises an intermittent spraying means for intermittently spraying a second decorative powder granules sprayed apparatus. 無機質自硬性材料又は無機質自硬性材料と木質材料とを主成分とする組成物をフォーミングして形成した未硬化無機質材料マットの表面に、前記請求項1乃至のいずれかに記載の装飾用粉粒状物散布装置を用いて、装飾用粉粒状物を不均一状態に散布した後、該未硬化無機質材料マットをエンボスプレス成形することを特徴とする化粧建築板の製造方法。The decorative powder according to any one of claims 1 to 4 , wherein the decorative powder according to any one of claims 1 to 4 is formed on a surface of an uncured inorganic material mat formed by forming an inorganic self-hardening material or a composition mainly composed of an inorganic self-hardening material and a wood material. A method for manufacturing a decorative building board, comprising: embossing press-molding the uncured inorganic material mat after spraying decorative powder granules in a non-uniform state using a granular material spraying device. 組成物が半乾式成形用組成物であり、該半乾式成形用組成物の少なくとも表層部を構成する組成物中には、表層部を着色する着色材が混入されていることを特徴とする請求項に記載の化粧建築板の製造方法。The composition is a semi-dry molding composition, and in the composition constituting at least the surface layer portion of the semi-dry molding composition, a coloring material for coloring the surface layer portion is mixed. Item 6. A method for producing a decorative building board according to Item 5 .
JP2003175923A 2003-06-20 2003-06-20 Decorating powder and particulate matter spraying apparatus, and method for manufacturing a decorative building board using this apparatus Expired - Lifetime JP4354746B2 (en)

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