JPH061679A - Decorating method for special roofing material - Google Patents
Decorating method for special roofing materialInfo
- Publication number
- JPH061679A JPH061679A JP18993892A JP18993892A JPH061679A JP H061679 A JPH061679 A JP H061679A JP 18993892 A JP18993892 A JP 18993892A JP 18993892 A JP18993892 A JP 18993892A JP H061679 A JPH061679 A JP H061679A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- cement
- pts
- emulsion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Aftertreatments Of Artificial And Natural Stones (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は屋根役物の化粧方法に
関し、詳しくは、セメントを主成分として成形された屋
根役物の化粧方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for applying a roof accessory, and more particularly to a method for applying a roof accessory formed mainly of cement.
【０００２】[0002]
【従来の技術】従来、屋根役物として粘土焼成によるも
のが伝統的に使用されてきたが、この種屋根役物は焼成
時の収縮変形が著しく、使用粘土によってもその差があ
るため製造管理が非常に困難である欠点があり、また重
量が嵩む上衝撃強度も低く割れ易いといった問題があっ
た。かかる問題を解消するものとしてセメントを主成分
とする配合材料により繊維補強セメント製屋根役物を製
造することが広く行われている。2. Description of the Related Art Conventionally, clay roofing materials have been traditionally used as roofing materials, but this type of roofing material undergoes significant shrinkage deformation during baking, and there is a difference depending on the clay used. However, there is a problem that it is very difficult, and that it is heavy and has low impact strength and is easily cracked. As a solution to this problem, it has been widely practiced to manufacture a fiber-reinforced cement roofing accessory by using a compounding material containing cement as a main component.
【０００３】ところで、セメント製屋根役物は、その材
質の特徴として吸水し易く、またそのままであると地色
が灰白色〜灰黒色の無彩色をなすので、意匠性が低く、
耐水性付与を兼ねて各種塗装を施すのが通例である。従
来ではこの塗装として、一次養生後の製品表面に、各種
色彩の顔料を添加したセメント配合物よりなるセメント
スラリーで下塗を実施し、その表面にエマルジョン塗装
を行い、製品と共にオートクレーブによる２次養生を行
って製品化していた。By the way, a cement roofing accessory is easily absorbed by water as a characteristic of its material, and if it is left as it is, the ground color is an achromatic color of grey-white to grey-black, so that the design is low,
It is customary to apply various coatings for the purpose of imparting water resistance. Conventionally, as this coating, the surface of the product after primary curing is undercoated with a cement slurry consisting of a cement mixture to which pigments of various colors are added, and the surface is subjected to emulsion coating to carry out secondary curing by autoclaving with the product. I went and commercialized it.
【０００４】[0004]
【従来技術の問題点】しかしながら、上記下塗を実施す
る場合、セメントスラリー層は補強繊維が含まないか、
含むとしても少量の石綿短繊維を使用するに過ぎず、前
者の補強繊維を添加しない場合は、下塗層としてのセメ
ントスラリー層の強度が低く、太陽熱による熱射と冬季
寒冷による熱収縮に起因して下塗層の剥離やクラックが
十分防止できず経年劣化が避けられないといった問題が
あった。[Problems of the prior art] However, when carrying out the above-mentioned undercoat, whether the cement slurry layer does not contain reinforcing fibers,
Even if it contains only a small amount of short asbestos fiber, when the former reinforcing fiber is not added, the strength of the cement slurry layer as the undercoat layer is low, and it is caused by thermal spray due to solar heat and heat contraction due to winter cold. Then, there is a problem that peeling and cracking of the undercoat layer cannot be sufficiently prevented and deterioration over time cannot be avoided.
【０００５】また、後者の石綿繊維添加によるものは上
述した問題は少ないが、石綿は公害の原因となることか
ら使用の制限ないしは全廃が強く要請されている。従っ
て、セメントスラリーによる下塗層の耐候性を十分にす
ることができない問題があった。Further, although the latter problem caused by the addition of asbestos fibers does not cause the above-mentioned problems, asbestos causes pollution, so that there is a strong demand for the restriction or complete abolition of its use. Therefore, there was a problem that the weather resistance of the undercoat layer due to the cement slurry could not be sufficient.
【０００６】[0006]
【発明が解決しようとする課題】この発明は、上記問題
点に鑑み、セメント製屋根役物における化粧塗装層の耐
候性の向上を目的としてなされたものである。SUMMARY OF THE INVENTION In view of the above problems, the present invention has been made for the purpose of improving the weather resistance of a decorative coating layer in a cement roof accessory.
【０００７】[0007]
【課題を解決するための手段】即ち、この発明の屋根役
物の化粧方法は、押出プレス法によって得た屋根役物成
形体を一次養生後、該屋根役物成形体を予熱しその表面
に、 2〜3 重量部のセルロースパウダー、45〜50重量部
のセメント、35〜40重量部のシリカ粉、 4〜6重量部の
シリカサンドからなるセメント配合物 100重量部に対し
100 重量部の珪砂及び45〜55重量部のエマルジョン、 5
〜10重量部の顔料、20〜25重量％の水よりなるスラリー
で下塗塗装し乾燥後、エマルジョン塗料にて上塗し、オ
ートクレーブ養生を行うことを特徴とするものである。That is, the method of applying a roof accessory product according to the present invention is such that after the primary curing of the roof accessory product obtained by the extrusion press method, the roof accessory product is preheated and the surface thereof is preheated. , 2 to 3 parts by weight of cellulose powder, 45 to 50 parts by weight of cement, 35 to 40 parts by weight of silica powder, and 4 to 6 parts by weight of silica sand for 100 parts by weight of a cement mixture.
100 parts by weight silica sand and 45-55 parts by weight emulsion, 5
The present invention is characterized in that an autoclave is cured by undercoating with a slurry consisting of -10 parts by weight of pigment and 20-25% by weight of water, drying and then overcoating with an emulsion paint.
【０００８】[0008]
【作用】この発明における屋根役物は、押出プレス法に
よって得られたものであり、その配合としては、パルプ
繊維等を補強繊維とした、いわゆる無石綿配合の配合原
料により成形されたものが対象とされる。The roof accessory according to the present invention is obtained by the extrusion press method, and the composition thereof is formed by a so-called asbestos-free compounding raw material using pulp fibers or the like as reinforcing fibers. It is said that
【０００９】上記屋根役物成形体表面の下塗層のセメン
トスラリーにおいて、セメント、シリカ粉、シリカサン
ドの配合量はセメント配合と同じであり、強固なセメン
トマトリックスを形成するに適した配合とされる。ま
た、セメントを配合材料とすることにより下地となるセ
メント製品との結合強度を高め、層間剥離を防止する。In the cement slurry of the undercoat layer on the surface of the above roof accessory molding, the amounts of cement, silica powder, and silica sand are the same as those of the cement, and it is considered that the cement slurry is suitable for forming a strong cement matrix. It Further, by using cement as a compounding material, the bond strength with the cement product as the base is enhanced and delamination is prevented.
【００１０】上記配合において 2〜3 重量部のセルロー
スパウダーを添加するのは、下塗層の耐収縮性を付与す
るためであって、2 重量部より少ないとこの効果が得ら
れず、また 3重量部より多くすると添加量が多くなり過
ぎ、下塗層のような薄い層ではかえってセメント層の強
度が低下する恐れがある。なお、このセルロースパウダ
ーは、25メッシュ残留分１％以下、 150メッシュ通過20
〜30％の微細パルプが好適に使用される。In the above formulation, the addition of 2 to 3 parts by weight of cellulose powder is to impart the shrink resistance of the undercoat layer, and if it is less than 2 parts by weight, this effect cannot be obtained. If the amount is more than the weight part, the addition amount becomes too large, and the strength of the cement layer may be rather lowered in a thin layer such as an undercoat layer. In addition, this cellulose powder has a residual content of 25 mesh of 1% or less and passes through 150 mesh of 20
~ 30% fine pulp is preferably used.
【００１１】上記セメント配合量 100重量部に対し添加
する珪砂は下塗層に適度な凹凸表面を付与し化粧層表面
に艶消しの効果を与えるためであって、任意粒径のもの
が使用可能である。その添加量は上記セメント配合物の
マトリックス強度に影響を与えない範囲とされ、上限が
前記セメント配合量と同量とされる。The silica sand added to 100 parts by weight of the above-mentioned cement is for imparting an appropriate uneven surface to the undercoat layer and imparting a matting effect to the surface of the decorative layer, and particles having an arbitrary particle size can be used. Is. The amount added is in a range that does not affect the matrix strength of the cement mixture, and the upper limit is the same as the amount of the cement compound.
【００１２】また、エマルジョンを配合するのは、一次
養生時基材及び下塗層よりエフロレッセンスが生じるの
を抑えるため, 及び後述の上塗層との結合性を良くする
ためであって、下地層としての色彩を付与するため顔料
を添加する。上記エマルジョンの配合量をセメント配合
物 100重量部に対し45〜55重量部とするのは、エマルジ
ョンを45重量部より少なくするとエフロレッセンスが十
分に防止できず、また上塗層との十分な結合強度が得ら
れない恐れがあり、55重量部より多くするとセメントマ
トリックスの強度に悪影響を及ぼす恐れがある。The emulsion is added to prevent the occurrence of efflorescence from the base material and the undercoat layer during the primary curing, and to improve the bondability with the overcoat layer described later. A pigment is added to give a color as a formation. The amount of the above emulsion is 45 to 55 parts by weight relative to 100 parts by weight of the cement mixture, because if the amount of the emulsion is less than 45 parts by weight, efflorescence cannot be sufficiently prevented and sufficient bonding with the overcoat layer is achieved. Strength may not be obtained, and if it exceeds 55 parts by weight, the strength of the cement matrix may be adversely affected.
【００１３】このセメント−エマルジョンからなる配合
にセメント配合量 100重量部に対し20〜25重量％の水を
添加してスラリーとするのは、20重量部より少ないと十
分な流動性が得られず、塗装が実施し難くなるためであ
り、また25重量部より多くすると流動性が大きくなりす
ぎ適度な層厚に塗装するのが困難となる。To add 20 to 25% by weight of water to 100 parts by weight of the cement mixture to form a slurry into a slurry, a sufficient fluidity cannot be obtained if the amount is less than 20 parts by weight. The reason is that the coating becomes difficult to carry out, and if the amount is more than 25 parts by weight, the fluidity becomes too large, and it becomes difficult to coat to an appropriate layer thickness.
【００１４】上記で得たスラリーで製品表面を下塗する
のであるが、製品表面は予熱されているので、乾燥が早
く、しかもエマルジョンも熱により早期に反応硬化して
エフロレッセンスの発生を防止する。この下塗後表面さ
らに乾燥させた後、エマルジョン塗装で上塗を行う。The surface of the product is undercoated with the slurry obtained above, but since the product surface is preheated, it dries quickly and the emulsion also reacts and cures early by heat to prevent the occurrence of efflorescence. After this undercoating, the surface is further dried, and then an emulsion coating is applied.
【００１５】このエマルジョン塗料そのものは従来と同
じであるが、下塗層に適度な量のエマルジョンが添加さ
れているので、下塗層と上塗層ととが強固に結合し、層
間剥離の無い、かつ耐久性のある化粧層が得られるので
ある。This emulsion paint itself is the same as the conventional one, but since an appropriate amount of emulsion is added to the undercoat layer, the undercoat layer and the overcoat layer are firmly bonded and there is no delamination. In addition, a durable decorative layer can be obtained.
【００１６】[0016]
【実施例】次にこの発明の実施例を説明する。 〔実施例〕押出プレス法によって得た屋根役物を 100℃
に予熱し、その表面に表１に記載の配合の下塗塗料を塗
布後、さらに乾燥炉で下塗層を乾燥し、次いでエマルジ
ョン 100重量部に顔料を 2〜5 重量部添加してなるエマ
ルジョン塗料にて上塗を行い、さらに乾燥炉で乾燥した
後、オートクレーブ養生を行った。なお表１記載のセル
ロースパウダーは、25メッシュ残留分１％以下、 150メ
ッシュ通過20〜30％の微細パルプを使用した。Embodiments of the present invention will be described below. [Example] A roof accessory obtained by the extrusion press method was heated to 100 ° C.
Emulsion paint prepared by preheating to 100% by weight of the emulsion and then applying 2 to 5 parts by weight of pigment to 100 parts by weight of emulsion. Was top coated, and after being dried in a drying oven, autoclave curing was performed. The cellulose powder shown in Table 1 was a fine pulp having a residual content of 25 mesh of 1% or less and passing through 150 mesh of 20 to 30%.
【００１７】〔比較例１〕セルロースパウダーを全く使
用しない他は実施例と同様にして化粧塗装を行った。 〔比較例２〕セルロースパウダー及び珪砂を使用しない
他は実施例と同様にして化粧塗装を行った。Comparative Example 1 Cosmetic coating was carried out in the same manner as in Example except that no cellulose powder was used. [Comparative Example 2] Decorative coating was performed in the same manner as in Example except that cellulose powder and silica sand were not used.
【００１８】[0018]
【表１】 [Table 1]
【００１９】表面化粧をした実施例、及び比較例１、２
について、表面光沢の状態を評価すると共にサンシャイ
ンウエザーメータ試験機による促進耐候試験、及び凍結
融解試験を行ったところ表２の結果となった。なお、凍
結融解試験は、製品を水中に浸したまま、零下20℃を２
時間維持した後２時間かけて20℃に加温し、20℃を２時
間維持した後２時間かけて零下20℃に冷却し、零下20℃
を２時間維持する凍結融解８時間を１サイクルとしたも
のである。Examples with surface makeup and Comparative Examples 1 and 2
The surface glossiness was evaluated, and the accelerated weathering test and freeze-thaw test using a sunshine weather meter tester were performed. In the freeze-thaw test, the product should be immersed in water at 20 ° C below zero for 2
After maintaining for 2 hours, warm to 20 ℃ for 2 hours, maintain at 20 ℃ for 2 hours, cool to below 20 ℃ for 2 hours, and cool to below 20 ℃.
One cycle consists of freeze-thawing for 8 hours for 2 hours.
【００２０】[0020]
【表２】 [Table 2]
【００２１】表２より明らかなように、本発明のもの
は、促進耐候試験、凍結融解試験のいずれにおいても良
好な結果が得られるのが確認された。なお、表２におい
て促進耐候性試験における◎は、塗膜表面に全く以上が
無かったもの、△は表面剥離が一部生じたもの、×は表
面剥離が著しいものを示す。また凍結融解試験に於ける
○は全く以上が無かったもの、△は化粧層表面の一部に
クラックが生じたもの、×は化粧層全面にクラックが生
じたものを示す。As is clear from Table 2, it was confirmed that the product of the present invention gave good results in both the accelerated weathering test and the freeze-thaw test. In Table 2, ⊚ in the accelerated weather resistance test indicates that the coating film surface has no scratches, Δ indicates that surface peeling occurs partially, and × indicates that surface peeling is remarkable. In addition, in the freeze-thaw test, ◯ means that there was nothing more, Δ means that a part of the surface of the decorative layer had cracks, and x means that the entire surface of the decorative layer had cracks.
【００２２】[0022]
【発明の効果】以上説明したように、この発明の方法に
よれば化粧層の下塗層にセルロースパウダーを添加して
いるので化粧層の耐久性が著しく向上され、長期にわた
って安定した強度を維持するのである。As described above, according to the method of the present invention, since the cellulose powder is added to the undercoat layer of the decorative layer, the durability of the decorative layer is remarkably improved and stable strength is maintained for a long period of time. To do.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０４Ｂ 14:06） Ｚ 2102−4Ｇ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display area C04B 14:06) Z 2102-4G
Claims (1)
体を一次養生後、該屋根役物成形体を予熱しその表面
に、 2〜3 重量部のセルロースパウダー、45〜50重量部
のセメント、35〜40重量部のシリカ粉、 4〜6 重量部の
シリカサンドからなるセメント配合物 100重量部に対し
100 重量部の珪砂及び45〜55重量部のエマルジョン、 5
〜10重量部の顔料、20〜25重量％の水よりなるスラリー
で下塗塗装し乾燥後、エマルジョン塗料にて上塗し、オ
ートクレーブ養生を行うことを特徴とする屋根役物の化
粧方法。1. A roof accessory molding obtained by extrusion press method is first cured, and then the roof accessory molding is preheated to have 2-3 parts by weight of cellulose powder and 45-50 parts by weight of cement on its surface. , 100 to 40 parts by weight of a cement mixture consisting of 35 to 40 parts by weight of silica powder and 4 to 6 parts by weight of silica sand.
100 parts by weight silica sand and 45-55 parts by weight emulsion, 5
A make-up method for a roofing agent, which comprises undercoating with a slurry consisting of -10 parts by weight of pigment and 20-25% by weight of water, drying, and then overcoating with an emulsion paint, followed by autoclave curing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18993892A JPH061679A (en) | 1992-06-23 | 1992-06-23 | Decorating method for special roofing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18993892A JPH061679A (en) | 1992-06-23 | 1992-06-23 | Decorating method for special roofing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH061679A true JPH061679A (en) | 1994-01-11 |
Family
ID=16249725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18993892A Pending JPH061679A (en) | 1992-06-23 | 1992-06-23 | Decorating method for special roofing material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH061679A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006114631A1 (en) * | 2005-04-28 | 2006-11-02 | Lafarge Roofing Technical Centers Limited | Method and plant for the manufacture of building products |
-
1992
- 1992-06-23 JP JP18993892A patent/JPH061679A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006114631A1 (en) * | 2005-04-28 | 2006-11-02 | Lafarge Roofing Technical Centers Limited | Method and plant for the manufacture of building products |
| US7981335B2 (en) | 2005-04-28 | 2011-07-19 | Monier Technical Centre Limited | Method and plant for the manufacture of building products |
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