JP3978347B2 - Manufacturing method of precast concrete board and manufacturing method of tile unit for precast concrete board - Google Patents

Manufacturing method of precast concrete board and manufacturing method of tile unit for precast concrete board Download PDF

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JP3978347B2
JP3978347B2 JP2002034746A JP2002034746A JP3978347B2 JP 3978347 B2 JP3978347 B2 JP 3978347B2 JP 2002034746 A JP2002034746 A JP 2002034746A JP 2002034746 A JP2002034746 A JP 2002034746A JP 3978347 B2 JP3978347 B2 JP 3978347B2
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joint
tile
tile group
precast concrete
noro
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JP2003239504A (en
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伸之 長谷川
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伸之 長谷川
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【０００１】
【発明の属する技術分野】
本発明は、タイル貼り付け済みのコンクリート板であるいわゆるプレキャストコンクリート板（以下単にＰＣ板という。）用のタイルユニット並びにその製造方法及びＰＣ板の製造方法に関する。なお、本発明において「タイル」の概念は広く解するものとし、天然或いは人工の石板や合成樹脂板、金属板なども含まれる。
【０００２】
【従来の技術】
上記ＰＣ板１００は、図３に示したようにコンクリート板１０１の表面に複数のタイルＴ，Ｔ…を貼り付けたものである。なお、図を簡略化するために１枚のコンクリート板１０１に対してタイル枚数を「９」としたが、実際のタイル枚数はそれより多い場合もあれば少ない場合もある。
【０００３】
従来のＰＣ板１００の製造方法は、先ず、図４（ａ）のように内部を仕切材１０２で縦横に仕切ったタイル整列用の箱枠１０３に複数のタイルＴを仰向け（表面が上向き）にして並べ、次に図４（ｂ）のように箱枠１０３の仕切材１０２によって作られるタイルＴ同士の目地相当の隙間Ｓにスポンジ状の合成樹脂等の弾性材で作った目地型材１０４を嵌め込み、さらに図４（ｃ）のように箱枠１０３内の全タイルＴ，Ｔ…を覆うように合成樹脂製の透明な粘着シート１０５を貼り付け、それを箱枠１０３から取り出してＰＣ板用タイルユニット１０６を形成する。次に図４（ｄ）のように前記ＰＣ板用タイルユニット１０６を俯せ状態にして型枠１０７内にセットし、その型枠１０７内にコンクリートを充填して加熱養生させる。次にＰＣ板１００を型枠１０７から取り出し、表面の粘着シート１０５と目地型材１０４を除去する。
【０００４】
【発明が解決しようとする課題】
従来のＰＣ板１００の製造方法で使用するＰＣ板用タイルユニット１０６は、表面に貼った粘着シート１０５でユニット形態を維持しているため、各タイルＴがばらばらにならないように粘着シート１０５の粘着力を強力にする必要がある。ところが粘着シート１０５は最終段階でＰＣ板１００から剥がすものであるため、粘着力の強さが逆に剥離作業を遅らせるマイナス要因になり、また、粘着剤（接着剤）がタイルＴの表面に残存するおそれがある。
さらにまた粘着シート１０５は合成樹脂製であるため、剥がした後、産業廃棄物として処理しなければならず、深刻な処分場不足と処理コストが大きな問題になっていた。
【０００５】
【課題を解決するための手段】
請求項１に記載したように、タイル貼り付け済みのコンクリート板であるいわゆるプレキャストコンクリート板の製造方法であって、次の（ｉ）〜（ｖ）の要件を備えてなる製造方法を提供する。
（ｉ）複数のタイルを目地相当の間隔をあけて所定の配置に並べ、裏側に設けたジョイント部材でタイル同士を連結して裏貼りタイル群を作る。
（ii）前記裏貼りタイル群の表側に開口する目地相当の隙間に裏貼りタイル群の表側から目地型材を嵌め込む。
（iii）目地型材を嵌め込んだ裏貼りタイル群の表面に、水溶性の被膜形成剤を塗布して乾燥させることによりノロ漏れ防止層を形成してプレキャストコンクリート板用タイルユニットとなす。
（iv）前記プレキャストコンクリート板用タイルユニットを俯せ状態にして型枠内にセットし、その型枠内にコンクリートを充填して固化させた後、プレキャストコンクリート板を型枠から取り出す。
（ｖ）プレキャストコンクリート板の表面のノロ漏れ防止層と目地型材を除去する。
【０００６】
また、請求項２に記載したように、次の（ｉ）〜（iv）の要件を備えてなるプレキャストコンクリート板用タイルユニットの製造方法を提供する。
（ｉ）複数のタイルを目地相当の間隔をあけて所定の配置に並べ、裏側に設けたジョイント部材でタイル同士を連結して裏貼りタイル群を作る。
（ii）前記裏貼りタイル群の表側に開口する目地相当の隙間に目地型材をタイルと面一の状態にして嵌め込む。
（iii）裏貼りタイル群と目地型材の表面に流動状態の水溶性の被膜形成剤を塗布する。
（iv）前記水溶性の被膜形成剤を乾燥させてノロ漏れ防止層を形成し、そのノロ漏れ防止層のみで裏貼りタイル群と目地型材の表面を覆う。
【０００７】
また、請求項３に記載したように、次の（ｉ）〜（iv）の要件を備えてなるプレキャストコンクリート板用タイルユニットの製造方法を提供する。
（ｉ）複数のタイルを目地相当の間隔をあけて所定の配置に並べ、裏側に設けたジョイント部材でタイル同士を連結して裏貼りタイル群を作る。
（ii）前記裏貼りタイル群の表側に開口する目地相当の隙間にタイル配置に合わせた格子状であって弾性素材による一体成形品である目地型材を嵌め込む。
（iii）裏貼りタイル群と目地型材の表面に流動状態の水溶性の被膜形成剤を塗布する。
（iv）前記水溶性の被膜形成剤を乾燥させてノロ漏れ防止層を形成し、そのノロ漏れ防止層のみで裏貼りタイル群と目地型材の表面を覆う。
【０００８】
本発明で使用するＰＣ板用タイルユニットは、タイル同士をジョイント部材で裏側から連結すると共にタイルの表面にノロ漏れ防止層を形成してなり、形態維持機能をジョイント部材に、また、ノロ漏れ防止機能をノロ漏れ防止層に分担させるようにしてあるため、従来のような形態維持機能とノロ漏れ防止機能を兼ねた強力な粘着シートを使用する必要がない。しかもタイルと目地型材の表面が、水溶性のノロ漏れ防止層のみで覆われているから水洗するだけで洗い流すことができ、従来の粘着シートのような廃棄物が残らない。
【０００９】
【発明の実施の形態】
以下に本発明の実施の形態を図面を参照しつつ説明する。なお、図１（ａ）〜（ｄ）は製造方法を説明する斜視図、図２は型枠にコンクリートを充填した状態を示す要部の拡大断面図、図３はＰＣ板の斜視図である。
【００１０】
本発明のＰＣ板用タイルユニット及びＰＣ板１００の製造方法は、次の（ｉ）〜（ｖ）の工程からなる。
（ｉ）複数のタイルＴを目地相当の間隔をあけて所定の配置に並べ、裏側に設けたジョイント部材２でタイルＴ，Ｔ…同士を連結して裏貼りタイル群３を作る（図１（ａ）参照。）。具体的な裏貼りタイル群３の製造方法を説明すると、先ず平坦な受け台４上であってジョイント部材２の配置ポイントにジョイント部材２の素材となる合成樹脂（例えばポリ塩化ビニルなどの熱硬化性樹脂）を特開昭４８−１０３２号のようにノズルで滴下するか、あるいは特開２０００−２８９０１５のようにジョイント部材２を象った切抜型孔を有する型シートを使って型抜きし、その上に全タイルＴ，Ｔ…を仰向け（表面が上向き）状態に載せてタイルＴの裏面と合成樹脂を密着させ、そのまま合成樹脂の硬化処理（例えば合成樹脂が熱硬化性樹脂であれば所定時間加熱する。）を実行する。
【００１１】
なお、ジョイント部材２と後述する目地型材５の間に設ける空間Ｕを確実に形成するために、受け台４上に形成したジョイント部材２を平らなプレス部材（図示せず）で押圧して均一な厚みに整えてからタイルＴを載せるようにするとよい。もちろんプレス板の押圧面にはフッ素樹脂やシリコーン樹脂などの離型性能に優れた合成樹脂の被膜を形成しておく。また、ジョイント部材２と目地型材５の空間Ｕを確実に形成するため、前記受け台４を従来の箱枠１０３のように仕切材１０２を設けた形態に変更し、その受け台４にタイルＴを俯せ状態にしてセットし、その状態のタイルＴの裏面に前記したようにノズルで滴下するか或いは型シートで直接ジョイント部材２を形成するようにしてもよい。この場合、受け台４に形成した仕切材１０２に相当する部材の高さによってジョイント部材２のタイル表面からの深さが正確に位置決めされるから前記空間Ｕの確実性が増す。
【００１２】
（ii）前記裏貼りタイル群３の表側に開口する目地相当の隙間Ｓに裏貼りタイル群３の表側から目地型材５を嵌め込む（図１（ｂ）参照。）。この状態で目地型材５とジョイント部材２の間に図２のように空間Ｕができる。目地型材５はスポンジ状の合成樹脂その他の弾性素材で形成されており、タイルＴの縦横の隙間Ｓに対応すべく格子状になっている。前記のように受け台４上にジョイント部材２を載せ、その上に仰向け状態にタイルＴを載せて合成樹脂（ジョイント部材２）の硬化処理を実行した場合には、受け台４に載せたまま流れ作業で目地型材５の嵌め込み作業が行える。
【００１３】
（iii）目地型材５を嵌め込んだ裏貼りタイル群３の表面に、水溶性の被膜形成剤を塗布して乾燥（硬化）させることによりノロ漏れ防止層６を形成してＰＣ板用タイルユニットとなす（図１（ｃ）参照。）。前記ノロ漏れ防止層６は、ノロ漏れ防止機能を有するものなら何でもよいが、実施形態のノロ漏れ防止層６は、例えばポリビニルアルコール（ＰＶＡ）のような水溶性の被膜形成剤（水溶性接着剤）の被膜であって、流動状態の前記被膜形成剤をローラや図１（ｃ）のように刷毛７で裏貼りタイル群３の表面に塗布するか或いは吹き付けて最終的に粘らない状態にまで乾燥させたものである。乾燥には約４０℃程度の温風を吹き付ければよい。このように裏貼りタイル群３の表面に流動状態の水溶性の被膜形成剤を直接塗り付けて被膜を形成するようにすれば、タイルＴと目地型材５の極僅かな隙間が水溶性の被膜形成剤で埋まる。
【００１４】
（iv）前記ＰＣ板用タイルユニットを俯せ状態（裏面を上向き）にして型枠８内にセットし、その型枠８内にコンクリート９を充填して固化させた後、ＰＣ板１００を型枠８から取り出す（図１（ｄ）、図２参照。）。充填したコンクリート９から発生するノロの一部は目地型材５とタイルＴの隙間を通ってタイルＴの表面にしみ出すおそれがあるが、ノロ漏れ防止層６によって阻止されるためタイルＴの表面が汚れない。なお、ノロ漏れ防止層６が水溶性の被膜である場合には、ノロの水分によってノロ漏れ防止層６が溶けて機能しないように思えるが、本出願人が前記合成糊（ＰＶＡ）で行った試験ではノロ漏れ防止層６が問題なく有効に機能した。推測によれば、目地型材５とタイルＴの間の隙間に入ったノロで同隙間を埋めている被膜形成剤の一部が溶けるのであろうが、その隙間がごく狭いため溶けた被膜形成剤をノロが突破できないものと思われる。
【００１５】
（ｖ）ＰＣ板１００の表面のノロ漏れ防止層６と目地型材５を除去する。実施形態のノロ漏れ防止層６は水溶性の被膜であるため、水洗するだけで簡単に除去できる。また、目地型材５は手で取り除く。
【００１６】
以上本発明を実施の形態について説明したが、もちろん本発明は上記実施形態に限定されるものではない。例えば、ノロ漏れ防止層６は前記したＰＶＡのような水溶性接着剤に粉砕パルプ（パルプ繊維）を混合して裏貼りタイル群３に塗り付けるようにしてもよい。このノロ漏れ防止層６は、ＰＣ板１００を洗浄すると粉砕パルプが解れて水と一緒に流れ落ちるから廃棄物が残らない。粉砕パルプは紙を細かく粉砕したものであり、その原料として古紙を利用すれば、古紙のリサイクルに貢献できる。
【００１７】
また、目地型材５は格子状の一体成形品である必要はなく、直線的な構成材を縦横に組み合わせて嵌め込むようにしてもよい。また、実施形態ではノロ漏れ防止層６をベタのシート状に形成したが、目地相当の隙間Ｓの上面のみを覆うように形成してもよい。そのようなノロ漏れ防止層６の形状のイメージは図１（ｂ）の目地型材５のようになる。また、タイルＴを裏貼りするジョイント部材２の材質、構造は自由である。
【００１８】
【発明の効果】
本発明で使用するＰＣ板用タイルユニットは、タイル同士をジョイント部材で裏側から連結すると共にタイルの表面にノロ漏れ防止層を形成してなり、形態維持機能をジョイント部材に、また、ノロ漏れ防止機能をノロ漏れ防止層に分担させるようにしてあるため、従来のような形態維持機能とノロ漏れ防止機能を兼ねた強力な粘着シートを使用する必要がない。しかもタイルと目地型材の表面が、水溶性のノロ漏れ防止層のみで覆われているから水洗するだけで洗い流すことができ、従来の粘着シートのような廃棄物が残らない。また、表面にＴｉＯ２やＳｉＯ２などの超親水性被膜を形成したセルフクリーニングタイプのタイルの場合は、タイルの表面に残存する接着剤がセルフクリーニング機能を低下させる要因になるため、本発明により蒙る利益は特に大きい。
【図面の簡単な説明】
【図１】 （ａ）〜（ｄ）は製造方法を説明する斜視図である。
【図２】 型枠にコンクリートを充填した状態を示す要部の拡大断面図である。
【図３】 ＰＣ板の斜視図である。
【図４】 （ａ）〜（ｄ）は従来の製造方法を説明する斜視図である。
【符号の説明】
Ｔ …タイル
Ｓ …隙間
Ｕ …空間
１００…プレキャストコンクリート板（ＰＣ板）
１０１…コンクリート板
２ …ジョイント部材
３ …裏貼りタイル群
５ …目地型材
６ …ノロ漏れ防止層
８ …型枠
９ …コンクリート[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tile unit for a so-called precast concrete board (hereinafter simply referred to as a PC board), which is a tile boarded concrete board, a manufacturing method thereof, and a PC board manufacturing method. In the present invention, the concept of “tile” is widely understood, and includes natural or artificial stone plates, synthetic resin plates, metal plates, and the like.
[0002]
[Prior art]
The PC board 100 is obtained by pasting a plurality of tiles T, T... On the surface of a concrete board 101 as shown in FIG. In order to simplify the drawing, the number of tiles is set to “9” for one concrete plate 101, but the actual number of tiles may be larger or smaller than that.
[0003]
In the conventional method of manufacturing the PC board 100, first, as shown in FIG. 4 (a), a plurality of tiles T are faced up (the surface is facing upward) on a box frame 103 for tile alignment whose interior is partitioned vertically and horizontally by a partition material 102. Next, as shown in FIG. 4B, the joint mold material 104 made of an elastic material such as sponge-like synthetic resin is fitted into the gap S corresponding to the joint between the tiles T formed by the partition material 102 of the box frame 103. Further, as shown in FIG. 4 (c), a transparent adhesive sheet 105 made of synthetic resin is attached so as to cover all the tiles T, T... Unit 106 is formed. Next, as shown in FIG. 4D, the PC board tile unit 106 is placed in a lean state and set in the mold 107, and the mold 107 is filled with concrete and heat cured. Next, the PC board 100 is taken out from the mold 107, and the adhesive sheet 105 and the joint mold material 104 on the surface are removed.
[0004]
[Problems to be solved by the invention]
Since the PC board tile unit 106 used in the conventional method of manufacturing the PC board 100 maintains the unit form with the adhesive sheet 105 affixed to the surface, the adhesive of the adhesive sheet 105 is prevented so that the tiles T are not separated. The power needs to be strong. However, since the adhesive sheet 105 is peeled off from the PC board 100 in the final stage, the strength of the adhesive force is a negative factor that delays the peeling work, and the adhesive (adhesive) remains on the surface of the tile T. There is a risk.
Furthermore, since the pressure-sensitive adhesive sheet 105 is made of synthetic resin, it has to be treated as industrial waste after being peeled off, resulting in a serious shortage of disposal sites and treatment costs.
[0005]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a manufacturing method of a so-called precast concrete board that is a tiled concrete board, and includes the following requirements (i) to (v).
(I) A plurality of tiles are arranged in a predetermined arrangement with an interval corresponding to a joint, and tiles are connected by a joint member provided on the back side to form a back tile group.
(Ii) A joint mold material is fitted from the front side of the back tile group into a gap corresponding to the joint opening on the front side of the back tile group.
(Iii) A water-soluble film-forming agent is applied to the surface of the backing tile group into which the joint mold material is fitted, and dried to form a no-leakage prevention layer to obtain a tile unit for a precast concrete board.
(Iv) The tile unit for the precast concrete board is set in the mold form in a lean state, the concrete is filled in the mold form and solidified, and then the precast concrete board is taken out from the mold form.
(V) Remove the noro-leakage prevention layer and joint material from the surface of the precast concrete board.
[0006]
Moreover, the manufacturing method of the tile unit for precast concrete boards provided with the requirements of following (i)-(iv) as described in Claim 2 is provided.
(I) A plurality of tiles are arranged in a predetermined arrangement with an interval corresponding to a joint, and tiles are connected by a joint member provided on the back side to form a back tile group.
(Ii) The joint material is fitted into the tile in a gap corresponding to the joint opening on the front side of the back-attached tile group.
(Iii) A fluidized water-soluble film forming agent is applied to the surface of the backing tile group and the joint mold material.
(Iv) Drying the water-soluble film-forming agent to form a noro leakage prevention layer, and covering only the backing tile group and the surface of the joint mold material with the noro leakage prevention layer.
[0007]
Moreover, the manufacturing method of the tile unit for precast concrete boards provided with the requirements of following (i)-(iv) as described in Claim 3 is provided.
(I) A plurality of tiles are arranged in a predetermined arrangement with an interval corresponding to a joint, and tiles are connected by a joint member provided on the back side to form a back tile group.
(Ii) A joint material that is a lattice-shaped and integrally molded product made of an elastic material is fitted into a gap corresponding to the joint that opens to the front side of the back-attached tile group.
(Iii) A fluidized water-soluble film forming agent is applied to the surface of the backing tile group and the joint mold material.
(Iv) Drying the water-soluble film-forming agent to form a noro leakage prevention layer, and covering only the backing tile group and the surface of the joint mold material with the noro leakage prevention layer.
[0008]
The tile unit for PC boards used in the present invention is formed by connecting tiles from the back side with a joint member and forming a noro leakage prevention layer on the surface of the tile, providing a shape maintaining function for the joint member and preventing noro leakage. Since the function is shared by the noro leakage prevention layer, it is not necessary to use a strong pressure-sensitive adhesive sheet that combines the form maintaining function and the noro leakage prevention function. Moreover, since the surfaces of the tile and the joint mold material are covered only with the water-soluble noro leakage prevention layer, they can be washed away only by washing with water, and no waste like the conventional adhesive sheet remains.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1A to 1D are perspective views for explaining a manufacturing method, FIG. 2 is an enlarged cross-sectional view of a main part showing a state in which a mold is filled with concrete, and FIG. 3 is a perspective view of a PC board. .
[0010]
The manufacturing method of the PC board tile unit and the PC board 100 of the present invention includes the following steps (i) to (v).
(I) A plurality of tiles T are arranged in a predetermined arrangement with an interval corresponding to a joint, and tiles T, T... Are connected to each other by a joint member 2 provided on the back side to form a back tile group 3 (FIG. 1 ( See a).). A specific method for manufacturing the backed tile group 3 will be described. First, a synthetic resin (for example, polyvinyl chloride or the like, which is a material of the joint member 2) is placed on the flat cradle 4 at the placement point of the joint member 2. Resin) is dropped with a nozzle as disclosed in JP-A-48-1032 or is molded using a mold sheet having a cut-out mold hole that is shaped like the joint member 2 as disclosed in JP-A-2000-289015, Further, all the tiles T, T. Heat for hours).
[0011]
In addition, in order to form reliably the space U provided between the joint member 2 and the joint molding material 5 mentioned later, the joint member 2 formed on the receiving stand 4 is pressed uniformly with a flat press member (not shown). It is advisable to place the tile T after adjusting the thickness. Of course, a synthetic resin film having excellent mold release performance such as fluororesin or silicone resin is formed on the pressing surface of the press plate. Further, in order to reliably form the space U between the joint member 2 and the joint mold material 5, the cradle 4 is changed to a form in which a partition material 102 is provided like the conventional box frame 103, and the cradle 4 has a tile T May be set in a lean state, and may be dropped on the back surface of the tile T in that state with a nozzle as described above, or the joint member 2 may be formed directly with a mold sheet. In this case, since the depth from the tile surface of the joint member 2 is accurately positioned by the height of the member corresponding to the partition member 102 formed on the cradle 4, the certainty of the space U is increased.
[0012]
(Ii) The joint mold material 5 is fitted into the gap S corresponding to the joint opening on the front side of the back-attached tile group 3 from the front side of the back-attached tile group 3 (see FIG. 1B). In this state, a space U is created between the joint mold member 5 and the joint member 2 as shown in FIG. The joint mold material 5 is formed of a sponge-like synthetic resin or other elastic material, and has a lattice shape so as to correspond to the vertical and horizontal gaps S of the tile T. As described above, when the joint member 2 is placed on the cradle 4 and the tile T is placed on its back and the curing process of the synthetic resin (joint member 2) is performed, the joint member 2 remains on the cradle 4 The joint mold 5 can be fitted in the flow process.
[0013]
(Iii) PC board tile unit by forming a non-leakage prevention layer 6 by applying a water-soluble film-forming agent to the surface of the backing tile group 3 fitted with the joint mold material 5 and drying (curing) it. (See FIG. 1 (c)). The noro leakage prevention layer 6 may be anything as long as it has a noro leakage prevention function, but the noro leakage prevention layer 6 of the embodiment may be a water-soluble film forming agent (water-soluble adhesive) such as polyvinyl alcohol (PVA). The film forming agent in a fluid state is applied to the surface of the backing tile group 3 with a roller or a brush 7 as shown in FIG. It has been dried. What is necessary is just to spray about 40 degreeC warm air for drying. In this way, if a fluidized water-soluble film forming agent is directly applied to the surface of the backing tile group 3 to form a film, a very slight gap between the tile T and the joint mold material 5 is formed in the water-soluble film. Filled with forming agent.
[0014]
(Iv) The PC board tile unit is set in the mold 8 in a lean state (back side facing up), and the concrete 8 is filled and solidified in the mold 8, and then the PC board 100 is molded. 8 (see FIG. 1D and FIG. 2). A part of the slot generated from the filled concrete 9 may ooze out to the surface of the tile T through the gap between the joint mold 5 and the tile T. Not dirty. In addition, when the noro leakage prevention layer 6 is a water-soluble film, it seems that the noro leakage prevention layer 6 is melted by the moisture of noro and does not function, but the present applicant performed with the synthetic paste (PVA). In the test, the noro leakage prevention layer 6 functioned effectively without problems. According to speculation, a part of the film forming agent filling the gap between the joint mold 5 and the tile T will melt, but the melted film forming agent because the gap is very narrow. It seems that Noro cannot break through.
[0015]
(V) The noro leakage prevention layer 6 and the joint mold material 5 on the surface of the PC plate 100 are removed. Since the Noro leakage prevention layer 6 of the embodiment is a water-soluble film, it can be easily removed only by washing with water. The joint mold material 5 is removed by hand.
[0016]
The embodiments of the present invention have been described above, but the present invention is of course not limited to the above embodiments. For example, the Noro leakage prevention layer 6 may be applied to the backing tile group 3 by mixing pulverized pulp (pulp fiber) with a water-soluble adhesive such as PVA described above. This noro leakage prevention layer 6 leaves no waste because the pulverized pulp is melted and flows down with water when the PC board 100 is washed. The pulverized pulp is a finely pulverized paper, and if used paper is used as the raw material, it can contribute to the recycling of the used paper.
[0017]
Moreover, the joint mold material 5 does not need to be a grid-like integral molded product, and may be fitted with linear constituent members combined vertically and horizontally. In the embodiment, the noro leakage prevention layer 6 is formed in a solid sheet shape, but may be formed so as to cover only the upper surface of the gap S corresponding to the joint. The image of the shape of such a noro leakage prevention layer 6 looks like the joint mold material 5 in FIG. Further, the material and structure of the joint member 2 for backing the tile T are free.
[0018]
【The invention's effect】
The tile unit for PC boards used in the present invention is formed by connecting tiles from the back side with a joint member and forming a noro leakage prevention layer on the surface of the tile, providing a shape maintaining function for the joint member and preventing noro leakage. Since the function is shared by the noro leakage prevention layer, it is not necessary to use a strong pressure-sensitive adhesive sheet that combines the form maintaining function and the noro leakage prevention function. Moreover, since the surfaces of the tile and the joint mold material are covered only with the water-soluble noro-leakage prevention layer, they can be washed away simply by washing with water, leaving no waste like the conventional adhesive sheet. Further, in the case of a self-cleaning type tile having a superhydrophilic film such as TiO 2 or SiO 2 formed on the surface, the adhesive remaining on the surface of the tile becomes a factor that reduces the self-cleaning function. The profits received are particularly great.
[Brief description of the drawings]
FIGS. 1A to 1D are perspective views illustrating a manufacturing method.
FIG. 2 is an enlarged cross-sectional view of a main part showing a state in which concrete is filled in a formwork.
FIG. 3 is a perspective view of a PC board.
FIGS. 4A to 4D are perspective views for explaining a conventional manufacturing method.
[Explanation of symbols]
T ... Tile S ... Gap U ... Space 100 ... Precast concrete board (PC board)
DESCRIPTION OF SYMBOLS 101 ... Concrete board 2 ... Joint member 3 ... Backing tile group 5 ... Joint molding material 6 ... Noro leakage prevention layer 8 ... Formwork 9 ... Concrete

Claims (3)

タイル貼り付け済みのコンクリート板であるいわゆるプレキャストコンクリート板の製造方法であって、次の（ｉ）〜（ｖ）の要件を備えてなることを特徴とする。
（ｉ）複数のタイルを目地相当の間隔をあけて所定の配置に並べ、裏側に設けたジョイント部材でタイル同士を連結して裏貼りタイル群を作る。
（ii）前記裏貼りタイル群の表側に開口する目地相当の隙間に裏貼りタイル群の表側から目地型材を嵌め込む。
（iii）目地型材を嵌め込んだ裏貼りタイル群の表面に、水溶性の被膜形成剤を塗布して乾燥させることによりノロ漏れ防止層を形成してプレキャストコンクリート板用タイルユニットとなす。
（iv）前記プレキャストコンクリート板用タイルユニットを俯せ状態にして型枠内にセットし、その型枠内にコンクリートを充填して固化させた後、プレキャストコンクリート板を型枠から取り出す。
（ｖ）プレキャストコンクリート板の表面のノロ漏れ防止層と目地型材を除去する。A method for producing a so-called precast concrete board, which is a tiled concrete board, characterized by comprising the following requirements (i) to (v).
(I) A plurality of tiles are arranged in a predetermined arrangement with an interval corresponding to a joint, and tiles are connected by a joint member provided on the back side to form a back tile group.
(Ii) A joint mold material is fitted from the front side of the back tile group into a gap corresponding to the joint opening on the front side of the back tile group.
(Iii) Applying a water-soluble film-forming agent to the surface of the backing tile group fitted with the joint mold material and drying it to form a no-leakage prevention layer to obtain a tile unit for a precast concrete board.
(Iv) The tile unit for the precast concrete board is set in the mold form in a lean state, the concrete is filled in the mold form and solidified, and then the precast concrete board is taken out from the mold form.
(V) Remove the noro-leakage prevention layer and joint material from the surface of the precast concrete board. 次の（ｉ）〜（iv）の要件を備えてなることを特徴とするプレキャストコンクリート板用タイルユニットの製造方法。
（ｉ）複数のタイルを目地相当の間隔をあけて所定の配置に並べ、裏側に設けたジョイント部材でタイル同士を連結して裏貼りタイル群を作る。
（ii）前記裏貼りタイル群の表側に開口する目地相当の隙間に目地型材をタイルと面一の状態にして嵌め込む。
（iii）裏貼りタイル群と目地型材の表面に流動状態の水溶性の被膜形成剤を塗布する。
（iv）前記水溶性の被膜形成剤を乾燥させてノロ漏れ防止層を形成し、そのノロ漏れ防止層のみで裏貼りタイル群と目地型材の表面を覆う。The manufacturing method of the tile unit for precast concrete boards characterized by providing the requirements of following (i)-(iv).
(I) A plurality of tiles are arranged in a predetermined arrangement with an interval corresponding to a joint, and tiles are connected by a joint member provided on the back side to form a back tile group.
(Ii) The joint material is fitted into the tile in a gap corresponding to the joint opening on the front side of the back-attached tile group.
(Iii) A fluidized water-soluble film forming agent is applied to the surface of the backing tile group and the joint mold material.
(Iv) Drying the water-soluble film-forming agent to form a noro leakage prevention layer, and covering only the backing tile group and the surface of the joint mold material with the noro leakage prevention layer. 次の（ｉ）〜（iv）の要件を備えてなることを特徴とするプレキャストコンクリート板用タイルユニットの製造方法。
（ｉ）複数のタイルを目地相当の間隔をあけて所定の配置に並べ、裏側に設けたジョイント部材でタイル同士を連結して裏貼りタイル群を作る。
（ii）前記裏貼りタイル群の表側に開口する目地相当の隙間にタイル配置に合わせた格子状であって弾性素材による一体成形品である目地型材を嵌め込む。
（iii）裏貼りタイル群と目地型材の表面に流動状態の水溶性の被膜形成剤を塗布する。
（iv）前記水溶性の被膜形成剤を乾燥させてノロ漏れ防止層を形成し、そのノロ漏れ防止層のみで裏貼りタイル群と目地型材の表面を覆う。The manufacturing method of the tile unit for precast concrete boards characterized by providing the requirements of following (i)-(iv).
(I) A plurality of tiles are arranged in a predetermined arrangement with an interval corresponding to a joint, and tiles are connected by a joint member provided on the back side to form a back tile group.
(Ii) A joint material that is a lattice-shaped and integrally molded product made of an elastic material is fitted into a gap corresponding to the joint that opens to the front side of the back-attached tile group.
(Iii) A fluidized water-soluble film forming agent is applied to the surface of the backing tile group and the joint mold material.
(Iv) Drying the water-soluble film-forming agent to form a noro leakage prevention layer, and covering only the backing tile group and the surface of the joint mold material with the noro leakage prevention layer.
JP2002034746A 2002-02-13 2002-02-13 Manufacturing method of precast concrete board and manufacturing method of tile unit for precast concrete board Expired - Lifetime JP3978347B2 (en)

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JPS5329932B2 (en) * 1973-06-02 1978-08-24
JPS53104015U (en) * 1977-01-26 1978-08-22
JPS5620264A (en) * 1979-07-28 1981-02-25 Showa Touen Kk Tile unit for oneeshot joint and making method of said unit
JPS5944831U (en) * 1982-09-17 1984-03-24 株式会社イナックス tile unit
JP2897955B1 (en) * 1998-03-27 1999-05-31 伸之 長谷川 Tile unit manufacturing method and tile unit manufacturing cradle
JP2001214596A (en) * 2000-02-01 2001-08-10 Sekisui Chem Co Ltd Tile pack sheet and manufacturing method of precast concrete panel with tile using it

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