JP6916502B2 - How to remove the coating for exterior wall tiles - Google Patents
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Description
本発明はタイル剥落防止用又は防水用の透明な樹脂で被覆した被膜が、きれいに且つ容易に除去できる外壁タイル用被膜の除去方法に関する。 The present invention relates to a method for removing a coating film for outer wall tiles, which allows a coating film coated with a transparent resin for preventing tile peeling or waterproofing to be removed cleanly and easily.
一般に外装仕上げ材としてタイル貼り仕上げの建物は、長期間に渡る紫外線，雨水，酸性ガス，地震などのさまざまな影響によりタイル面の汚れ，ひび割れ，浮き，剥離，目地部のエフロレッセンスの流出，コンクリートの中性化の進行，そして漏水などによるさまざまな劣化現象が見られ、タイル貼り面の適切な補修処置は重要になってきている。このため、本発明者が特許登録番号第５７４６１１４号「内外装用タイルひび割れ修復時に於けるタイル剥落防止及び防水工法」を提案した。この工法は、タイル表面にアクリルシリコン系樹脂を塗布し、ナイロン繊維入り剥落防止材で中塗りが行われて第１塗膜を形成し、その第１塗膜を突き抜いてアンカーピンを目地部に打込む。その後、タイルと目地部の表面に、ナイロン繊維入りで且つ透明なアクリル樹脂で第２回目と第３回目の中塗りを行う。更に透明なアクリルシリコン樹脂で上塗りを行う工法である。尚、防水用被膜には、ナイロン繊維などの落下防止材を入れない場合も多くある。 Generally, in a building with tiled finish as an exterior finishing material, the tile surface is dirty, cracked, floating, peeled, outflow of efflorescence at the joint, concrete due to various influences such as ultraviolet rays, rainwater, acid gas, and earthquake over a long period of time. Various deterioration phenomena such as progress of neutralization and water leakage have been observed, and appropriate repair measures for tiled surfaces are becoming important. Therefore, the present inventor has proposed Patent Registration No. 5746114, "Tile exfoliation prevention and waterproofing method when repairing cracks in tiles for interior and exterior". In this method, an acrylic silicone resin is applied to the tile surface, and an intermediate coating is performed with a peeling prevention material containing nylon fibers to form a first coating film, and the first coating film is pierced to make an anchor pin a joint. Type in. After that, the surfaces of the tiles and joints are coated with a transparent acrylic resin containing nylon fibers for the second and third times. Furthermore, it is a construction method in which a top coat is applied with a transparent acrylic silicone resin. In many cases, a fall prevention material such as nylon fiber is not included in the waterproof coating.
しかしながら、前記タイル剥落防止及び防水工法として施工された被膜（塗膜）は、十数年経過すると紫外線，雨水，酸性ガスなどのさまざまな影響により劣化される。従って、前記被膜を除去し、その後、新たな被膜を被覆させる必要があるが、この時の劣化した被膜を除去する方法としては、特開平９−１７０３３７号「外壁塗膜の剥離方法」が提案されている。この方法は、高圧水を加熱して高圧温水にし、高圧温水を外壁塗膜の表面に吹き付けて、塗膜を軟化して剥離させる方法である。しかし、その高圧水を得るための装置及び加熱させるための装置等が必要であり、この方法で外壁塗膜の剥離作業を行う場合、装置が大掛りになると共に、除去された塗膜は広範囲に飛び散るので、その回収及び清掃に手間が多く掛り、且つ、高圧水の圧力が400〜500Kg/cm2 に設定されているため、タイルや目地が飛び散る恐れがあった。 However, the coating film (coating film) applied as the tile peeling prevention and waterproofing method is deteriorated by various influences such as ultraviolet rays, rainwater, and acid gas after a lapse of more than ten years. Therefore, it is necessary to remove the coating film and then coat a new coating film. As a method for removing the deteriorated coating film at this time, Japanese Patent Application Laid-Open No. 9-170337 "Method for peeling the outer wall coating film" is proposed. Has been done. In this method, high-pressure water is heated to make high-pressure hot water, and the high-pressure hot water is sprayed on the surface of the outer wall coating film to soften and peel off the coating film. However, a device for obtaining the high-pressure water, a device for heating, etc. are required, and when the outer wall coating film is peeled off by this method, the device becomes large and the removed coating film is wide-ranging. It takes a lot of time and effort to collect and clean the tiles, and the pressure of the high-pressure water is set to 400 to 500 kg / cm 2 , so there is a risk that the tiles and joints will scatter.
また従来、タイル表面に被覆した被膜を除去する他の方法としては、塩化メチレンを主剤とする塩素系剥離剤を使用し、被膜を溶かした後、プラスチック製ヘラ等を用いて掻き落しているが、この時の被膜が多層、例えば３層であれば、１層ずつ溶かして掻き落とす作業を３回繰返さなければならなかった。また被膜が溶けてタイルに密着するため、掻き落とす作業がスムーズに行えず、一日当たり１平方メートル程度しか除去できなかった。
尚、この場合、タイル以外の一般の外壁であれば、電動ハツリ工具を使用して広範囲の被膜（塗膜）の除去が可能であるが、外壁がタイル貼りであると、タイル表面を傷付け易いので、傷を付けぬように注意をはらって除去作業を行わなければならなかった。このため、外壁タイル表面に設けた被膜を除去する際には、電動ハツリ工具が使用できず、手作業で行われていた。
更に塩素系剥離剤が皮膚に触れると、ひぶくれや火傷を起こす恐れがあり、作業安全に問題があり、且つ、塩素系剥離剤には毒性があるため、環境問題を生じる恐れがあった。
Conventionally, as another method for removing the coating film on the tile surface, a chlorine-based release agent containing methylene chloride as a main component is used, the coating film is melted, and then scraped off with a plastic spatula or the like. If the coating film at this time is multi-layered, for example, three layers, the work of melting and scraping off one layer at a time had to be repeated three times. In addition, since the coating melted and adhered to the tile, the scraping work could not be performed smoothly, and only about 1 square meter could be removed per day.
In this case, if it is a general outer wall other than tiles, a wide range of coating film (coating film) can be removed by using an electric chipping tool, but if the outer wall is tiled, the tile surface is easily damaged. Therefore, I had to be careful not to damage it when removing it. For this reason, when removing the coating film provided on the outer wall tile surface, an electric chipping tool cannot be used, and it is performed manually.
Furthermore, if the chlorine-based release agent comes into contact with the skin, it may cause swelling or burns, which poses a problem in work safety, and the chlorine-based release agent is toxic, which may cause environmental problems. ..
このため、剥落防止用又は防水用の被膜を除去する場合に、塩素系剥離剤を使用せず、アルコール系剥離剤を使用して、前記被膜を除去できる作業性の良い被膜の除去方法の開発が要望されていた。 Therefore, when removing the film for preventing peeling or waterproofing, a method for removing the film with good workability that can remove the film by using an alcohol-based release agent without using a chlorine-based release agent has been developed. Was requested.
本発明はタイル貼り面のひび割れやタイルの剥落防止用又は防水用の被膜を、剥離させて除去する際、その被膜がきれいに且つ容易に除去できると共にコストダウンも可能な外壁タイル用被膜の除去方法を提供することを目的とする。 The present invention is a method for removing a coating film for outer wall tiles, which can cleanly and easily remove the coating film for preventing cracks on the tiled surface and for preventing the tile from peeling off or for waterproofing, and can also reduce the cost. The purpose is to provide.
本発明は上記要望に応えるために成されたものであり、つまり、イ）外壁タイルの表面にタイル剥落防止用又は防水用として被覆した透明な被膜に、アルコール系剥離剤を塗布する剥離剤塗布工程。
ロ）アルコール系剥離剤の塗布面に、コロナ放電処理した合成樹脂製シートを密着させて、乾燥を防止する塗布面乾燥防止工程。
ハ）所定時間放置させ、アルコール系剥離剤が被膜に浸透されて、その被膜を軟化させる被膜軟化工程。
二）所定時間後、合成樹脂製シートを剥がすと、軟化した被膜が合成樹脂製シートに付着されて、その被膜を除去させる被膜除去工程。
ホ）外壁タイルと目地部の表面を、高圧洗浄水で洗浄する洗浄工程。
少なくとも以上の工程を順次行う。
The present invention has been made in order to meet the above demands, that is, a) a release agent coating by applying an alcohol-based release agent to a transparent film coated on the surface of an outer wall tile for tile peeling prevention or waterproofing. Process.
B) A step of preventing the coated surface from drying by bringing a corona discharge-treated synthetic resin sheet into close contact with the coated surface of the alcohol-based release agent.
C) A film softening step in which an alcohol-based release agent is allowed to permeate the film after being left for a predetermined time to soften the film.
2) A film removing step in which when the synthetic resin sheet is peeled off after a predetermined time, the softened film is attached to the synthetic resin sheet and the film is removed.
E) A cleaning process that cleans the outer wall tiles and the surface of joints with high-pressure washing water.
At least the above steps are sequentially performed.
また前記剥離剤塗布工程に於いて、被膜にアルコール系剥離剤を塗布する際、ループローラーを用いるのが好ましい。更に前記塗布面乾燥防止工程に於いて、アルコール系剥離剤の塗布面に合成樹脂製シートを密着させる際、砂骨ローラーを用いるのが好ましい。
尚、本発明に於ける「被膜」とは、透明なものを指し、外壁に塗布した有色塗料による塗膜は本発明に含まないものとする。
Further, in the release agent application step, it is preferable to use a loop roller when applying the alcohol-based release agent to the coating film. Further, in the step of preventing the coated surface from drying, it is preferable to use a sand bone roller when the synthetic resin sheet is brought into close contact with the coated surface of the alcohol-based release agent.
The term "coating film" in the present invention refers to a transparent film, and the coating film made of the colored paint applied to the outer wall is not included in the present invention.
請求項１のようにイ）外壁タイル（１）の表面にタイル剥落防止用又は防水用として被覆した透明な被膜（３）に、アルコール系剥離剤（４）を塗布する剥離剤塗布工程。
ロ）前記アルコール系剥離剤（４）の塗布面に、コロナ放電処理した合成樹脂製シート（５）を密着させて、乾燥を防止する塗布面乾燥防止工程。
ハ）所定時間放置させ、アルコール系剥離剤（４）が被膜（３）に浸透されて、その被膜（３）を軟化させる被膜軟化工程。
二）所定時間後、合成樹脂製シート（５）を剥がすと、軟化した被膜（３）が合成樹脂製シート（５）に付着されて、その被膜（３）を除去させる被膜除去工程。
ホ）外壁タイル（１）と目地部（２）の表面を、高圧洗浄水で洗浄する洗浄工程。
少なくとも以上の工程を順次行うことにより、被膜（３）は溶解せず、浸透して軟化することができ、合成樹脂製シート（５）を剥がすと、軟化した被膜（３）と一緒に付着されるため、被膜（３）がきれいに剥離でき、且つ、被膜（３）が殆ど残らないので、プラスチック製ヘラの使用が殆どなく、容易に被膜（３）が除去でき、作業性が良好となると共に作業効率が良くなるため、コストダウンが可能となる。
As in claim 1, a) A release agent application step of applying an alcohol-based release agent (4) to a transparent film (3) coated on the surface of the outer wall tile (1) for tile peeling prevention or waterproofing.
B) A step of preventing the coated surface from drying by bringing the synthetic resin sheet (5) subjected to the corona discharge treatment into close contact with the coated surface of the alcohol-based release agent (4).
C) A film softening step in which the alcohol-based release agent (4) is permeated into the film (3) and the film (3) is softened after being left to stand for a predetermined time.
2) A film removing step in which when the synthetic resin sheet (5) is peeled off after a predetermined time, the softened film (3) is attached to the synthetic resin sheet (5) and the film (3) is removed.
E) A cleaning process in which the surfaces of the outer wall tiles (1) and joints (2) are cleaned with high-pressure washing water.
By performing at least the above steps in sequence, the coating film (3) does not dissolve but can permeate and soften, and when the synthetic resin sheet (5) is peeled off, it adheres together with the softened coating film (3). Therefore, the coating film (3) can be peeled off cleanly, and the coating film (3) hardly remains. Therefore, the coating film (3) can be easily removed with almost no use of a plastic spatula, and the workability is improved. Since the work efficiency is improved, the cost can be reduced.
請求項２のように前記剥離剤塗布工程に於いて、被膜（３）にアルコール系剥離剤（４）を塗布する際、ループローラーを用いることにより、厚く塗布することができ、平方メートル当たり、0.5〜1.0Kg塗布することができるため、アルコール系剥離剤（４）を効率良く被膜（３）に浸透させるものとなる。 When the alcohol-based release agent (4) is applied to the coating film (3) in the release agent application step as in claim 2, it can be applied thickly by using a loop roller, and 0.5 per square meter. Since ~ 1.0 kg can be applied, the alcohol-based release agent (4) can be efficiently permeated into the coating film (3).
請求項３に示すように前記塗布面乾燥防止工程に於いて、アルコール系剥離剤（４）の塗布面に合成樹脂製シート（５）を密着させる際、砂骨ローラーを用いることにより、一般のローラーを使用した際のアルコール系剥離剤（４）が片寄り易いのに比べ、均一に加圧させることができ、アルコール系剥離剤（４）を被膜（３）に均一に浸透させて軟化させることができる。 As shown in claim 3, in the step of preventing the coated surface from drying, when the synthetic resin sheet (5) is brought into close contact with the coated surface of the alcohol-based release agent (4), a sand-bone roller is used to make it general. Compared to the fact that the alcohol-based release agent (4) tends to be biased when a roller is used, the pressure can be uniformly applied, and the alcohol-based release agent (4) is uniformly permeated into the coating film (3) to soften it. be able to.
本発明の実施形態を図１、図２に基づいて説明する。（１）は外壁に貼着された外壁タイルであり、（２）は目地部である。（３）は外壁タイル（１）と目地部（２）の表面に塗布したタイル剥落防止用又は防水用の透明な被膜であり、該被膜（３）は、下塗りとして塗布したアクリルシリコン系樹脂のシーラーの膜と、中塗りとして塗布した剥落防止材であるナイロン繊維入りで且つ透明なアクリル樹脂の膜と、仕上げとして塗布した透明なアクリル樹脂の膜などが積重されている。尚、防水用被膜（３）にはナイロン繊維の剥落防止材が入れられていない。 An embodiment of the present invention will be described with reference to FIGS. 1 and 2. (1) is an outer wall tile attached to the outer wall, and (2) is a joint portion. (3) is a transparent coating film for preventing tile peeling or waterproofing applied to the surfaces of the outer wall tile (1) and the joint portion (2), and the coating film (3) is made of an acrylic silicone resin applied as an undercoat. A sealer film, a transparent acrylic resin film containing nylon fiber, which is an anti-peeling material applied as an intermediate coat, and a transparent acrylic resin film applied as a finish are stacked. The waterproof coating (3) does not contain a nylon fiber exfoliation preventive material.
（４）はアルコール系剥離剤であり、該アルコール系剥離剤（４）としては、例えば、発売元の株式会社ヤグチ技工の商品名プラチナＺ（タイル面透明塗膜剥離除去専用柔軟剤）を用いるのが好ましい。尚、前記アルコール系剥離剤（４）は、被膜（３）を溶解せず、下地まで浸透させ、被膜（３）全体を膨張させて軟化するものであれば、他の剥離剤でも良い。 (4) is an alcohol-based release agent, and as the alcohol-based release agent (4), for example, the trade name Platinum Z (softener for removing the transparent coating film on the tile surface) of the distributor Yaguchi Gikou Co., Ltd. is used. Is preferable. The alcohol-based release agent (4) may be another release agent as long as it does not dissolve the film (3) but penetrates to the base to expand and soften the entire film (3).
（５）はコロナ放電処理した合成樹脂製シートであり、該合成樹脂製シート（５）としては、ポリエチレンビニールや高密度ポリエチレンなどを用いると良い。尚、コロナ放電処理した合成樹脂製シートは、処理しないものと比べ、被膜（３）との密着力が向上する。 Reference numeral (5) is a synthetic resin sheet subjected to corona discharge treatment, and polyethylene vinyl, high-density polyethylene, or the like may be used as the synthetic resin sheet (5). The synthetic resin sheet subjected to the corona discharge treatment has improved adhesion to the coating film (3) as compared with the sheet not treated.
次に本発明の外壁タイル用被膜の除去工程を図１に示すブロック図に沿って説明する。先ず、イ）外壁タイル（１）の表面に図２（ａ）に示す被膜（３）の上に、アルコール系剥離剤（４）をローラーで均一に塗布する剥離剤塗布工程を行う［図２（ｂ）参照］。この時、ループローラーを用いると、０．５〜１．０Ｋｇ／ｍ２塗布できるので、厚い塗布が形成できる。
ロ）アルコール系剥離剤（４）が乾燥しない内に、その塗布面に、コロナ放電処理した合成樹脂製シート（５）を密着させてラップする塗布面乾燥防止工程を行う［図２（ｃ）参照］。この合成樹脂製シート（５）を密着させる時に、合成樹脂製シート（５）の上からローラーや刷毛で軽く押圧しながらエアーを抜くと良く、特に砂骨ローラーを用いると、点接触して押圧されるので、アルコール系剥離剤（４）の厚みが片寄らずに均一に押圧できる。尚、一般のローラーを用いると、アルコール系剥離剤（４）の厚みが片寄って不均一になり易く、且つ、アルコール系剥離剤（４）の浸透が不均一になり、前記被膜（３）の箇所により軟化される時間が異なるため、全体が軟化するまでに時間が掛り、作業性が悪くなる。
Next, the step of removing the coating film for the outer wall tile of the present invention will be described with reference to the block diagram shown in FIG. First, a) a release agent application step of uniformly applying the alcohol-based release agent (4) on the surface of the outer wall tile (1) on the coating film (3) shown in FIG. 2 (a) with a roller [FIG. 2]. (B)]. At this time, if a loop roller is used, 0.5 to 1.0 kg / m 2 can be applied, so that a thick application can be formed.
B) Before the alcohol-based release agent (4) dries, a corona discharge-treated synthetic resin sheet (5) is brought into close contact with the coated surface to wrap it, and a step of preventing the coated surface from drying is performed [FIG. 2 (c)). reference]. When the synthetic resin sheet (5) is brought into close contact with the synthetic resin sheet (5), it is advisable to lightly press the synthetic resin sheet (5) with a roller or a brush to remove air. Therefore, the thickness of the alcohol-based release agent (4) can be uniformly pressed without being biased. When a general roller is used, the thickness of the alcohol-based release agent (4) tends to be biased and non-uniform, and the permeation of the alcohol-based release agent (4) becomes non-uniform. Since the softening time differs depending on the location, it takes time for the whole to soften, resulting in poor workability.
ハ）所定時間放置させ、前記アルコール系剥離剤（４）が被膜（３）に浸透されて、その被膜（３）を軟化させる被膜軟化工程を行う。この放置時間としては、季節によって異なるが、２４時間〜７２時間放置し、アルコール系剥離剤（４）の浸透によって被膜（３）が軟化するのを待つ。この時の被膜（３）の軟化の目安としては、合成樹脂製シート（５）の上から指で強く押してへこむ硬さ、更に詳細に説明すると、焼いて食べる際の餅の硬さ程度になるまで待つのが好ましい。尚、前記アルコール系剥離剤（４）が被膜（３）に浸透されると、被膜（３）が図２（ｄ）のように膨らむと共に軟化される。そして、前記アルコール系剥離剤（４）は、被膜（３）に殆ど吸い込まれて、被膜（３）と合成樹脂製シート（５）の間にはベタツキ（黒線部分）だけが残る。 C) After being left to stand for a predetermined time, the alcohol-based release agent (4) is permeated into the coating film (3) to perform a coating film softening step of softening the coating film (3). The leaving time varies depending on the season, but it is left for 24 hours to 72 hours and waits for the coating film (3) to soften due to the permeation of the alcohol-based release agent (4). As a guideline for the softening of the coating film (3) at this time, the hardness of pressing strongly with a finger from the top of the synthetic resin sheet (5) to dent it, and more specifically, the hardness of the rice cake when it is baked and eaten. It is preferable to wait until. When the alcohol-based release agent (4) is infiltrated into the coating film (3), the coating film (3) swells and softens as shown in FIG. 2 (d). Then, the alcohol-based release agent (4) is almost sucked into the coating film (3), and only stickiness (black line portion) remains between the coating film (3) and the synthetic resin sheet (5).
二）所定時間後、合成樹脂製シート（５）を図２（ｅ）のように、上から剥がすと、軟化した被膜（３）が、合成樹脂製シート（５）に付着されて一緒に剥がれる。それを完全に下まで剥がし、その合成樹脂製シート（５）を丸めるだけで、被膜（３），アルコール系剥離剤（４），合成樹脂製シート（５）が一度に処分でき、産業廃棄物として処分すれば被膜除去工程が完了する。前記合成樹脂製シート（５）を剥がす際、それを剥がす前に、外壁タイル（１）側に被膜（３）が殆ど残らないようにするため、その上からウールローラーで押圧するのが好ましい。この作業を行うと、軟化した被膜（３）の接着力がタイル面に対して極めて弱くなるので、合成樹脂製シート（５）の上から強くウールローラーで押圧（転圧）すると、被膜（３）と合成樹脂製シート（５）の間に残ったベタツキにより、被膜（３）が合成樹脂製シート（５）側に転写された状態となり、軟化した被膜（３）が合成樹脂製シート（５）と一緒に確実に剥がれ、外壁タイル（１）側に殆ど残らずに、きれいに剥がれることが本発明者によって確認されている。 2) After a predetermined time, when the synthetic resin sheet (5) is peeled off from above as shown in FIG. 2 (e), the softened film (3) is attached to the synthetic resin sheet (5) and peeled off together. .. The coating (3), alcohol-based release agent (4), and synthetic resin sheet (5) can be disposed of at once by simply peeling it completely to the bottom and rolling the synthetic resin sheet (5), which is an industrial waste. If you dispose of it as, the film removal process is completed. When the synthetic resin sheet (5) is peeled off, it is preferable to press it with a wool roller from above so that the coating film (3) hardly remains on the outer wall tile (1) side before peeling off. When this work is performed, the adhesive force of the softened film (3) becomes extremely weak with respect to the tile surface. Therefore, when the synthetic resin sheet (5) is strongly pressed (rolled) with a wool roller from above, the film (3) is pressed. ) And the stickiness remaining between the synthetic resin sheet (5), the coating film (3) is transferred to the synthetic resin sheet (5) side, and the softened coating film (3) is transferred to the synthetic resin sheet (5). ), And it has been confirmed by the present inventor that it can be peeled off cleanly with almost no residue on the outer wall tile (1) side.
次に、ホ）外壁タイル（１）と目地部（２）の表面が、高圧洗浄水（圧力120〜150Kg/cm2）で洗浄される洗浄工程を行う。この時、従来の如きプラスチック製ヘラを使用することがなく、外壁タイル（１）と目地部（２）の表面は、被膜（３）が殆ど付着していないので、合成樹脂製シート（５）を剥がした後は、直ぐに洗浄工程が行える。尚、前記被膜（３）が多少残ったとしても高圧洗浄水で簡単に除去できる。
以上のイ）〜ホ）工程を少なくとも順次行えば良い。
Next, (e) a cleaning step is performed in which the surfaces of the outer wall tile (1) and the joint (2) are washed with high-pressure washing water (pressure 120 to 150 kg / cm 2). At this time, the surface of the outer wall tile (1) and the joint portion (2) is hardly adhered with the coating film (3) without using a conventional plastic spatula, so that the synthetic resin sheet (5) is used. After peeling off, the cleaning process can be performed immediately. Even if some of the coating film (3) remains, it can be easily removed with high-pressure washing water.
The above steps (a) to (e) may be performed at least in sequence.
このように本発明方法は、特に、イ）コロナ放電処理した合成樹脂製シート（５）を用いてアルコール系剥離剤（４）に密着させて、塗布面乾燥防止工程が行われることにより、アルコール系剥離剤（４）の蒸発が防止でき、被膜（３）への浸透が促進される。更にコロナ放電処理した合成樹脂製シート（５）は、該合成樹脂製シート（５）を剥がす際、被膜（３）が合成樹脂製シート（５）へ確実に付着して剥離されるものとなる。
ロ）アルコール系剥離剤（４）が被膜（３）に浸透されて軟化する被膜軟化工程が行われることにより、塩素系剥離剤のように被膜（３）を溶かすことがないので、プラスチック製ヘラで溶けた被膜（３）を掻き落とす作業が殆ど不要となる。
ハ）被膜（３）の除去工程に於いて、合成樹脂製シート（５）を剥がすと、軟化した被膜（３）が、合成樹脂製シート（５）と一緒に剥がれ、その合成樹脂製シート（５）を丸めるだけで、被膜（３），アルコール系剥離剤（４），合成樹脂製シート（５）が一度に処分できることにより、被膜（３）が軟化するまでの待ち時間以外の作業が、従来の作業よりも数十分の１に短縮でき、且つ、作業が簡単になることにより、作業費が半減し、工期が早くなり、少数の人員でも剥離作業がスムーズに行えるものとなった。
尚、剥離作業後、剥落防止用又は防水用の新たな被膜（３）を、外壁タイル（１）と目地部（２）の表面に形成させると良い。
As described above, in the method of the present invention, in particular, a) a corona discharge-treated synthetic resin sheet (5) is used to be brought into close contact with the alcohol-based release agent (4), and a step of preventing the coated surface from drying is performed. Evaporation of the system release agent (4) can be prevented, and penetration into the coating film (3) is promoted. Further, in the synthetic resin sheet (5) subjected to the corona discharge treatment, when the synthetic resin sheet (5) is peeled off, the coating film (3) is surely adhered to the synthetic resin sheet (5) and peeled off. ..
B) A plastic spatula is used because the film (3) is not melted unlike the chlorine-based release agent by performing the film softening step in which the alcohol-based release agent (4) is permeated into the film (3) and softened. The work of scraping off the film (3) melted in (3) is almost unnecessary.
C) When the synthetic resin sheet (5) is peeled off in the step of removing the coating film (3), the softened coating film (3) is peeled off together with the synthetic resin sheet (5), and the synthetic resin sheet (5) is peeled off. By simply rolling 5), the coating film (3), alcohol-based release agent (4), and synthetic resin sheet (5) can be disposed of at once, so that work other than the waiting time until the coating film (3) softens can be done. By shortening the work to one tenth of the conventional work and simplifying the work, the work cost is halved, the construction period is shortened, and the peeling work can be smoothly performed even with a small number of personnel.
After the peeling work, a new coating (3) for preventing peeling or waterproofing may be formed on the surfaces of the outer wall tile (1) and the joint portion (2).
１ 外壁タイル
２ 目地部
３ 被膜
４ アルコール系剥離剤
５ 合成樹脂製シート
1 Outer wall tile 2 Joint 3
Claims (3)
ロ）前記アルコール系剥離剤（４）の塗布面に、コロナ放電処理した合成樹脂製シート（５）を密着させて、乾燥を防止する塗布面乾燥防止工程。
ハ）所定時間放置させ、前記アルコール系剥離剤（４）が前記被膜（３）に浸透されて、その被膜（３）を軟化させる被膜軟化工程。
二）所定時間後、前記合成樹脂製シート（５）を剥がすと、軟化した前記被膜（３）が前記合成樹脂製シート（５）に付着されて、その被膜（３）を除去させる被膜除去工程。
ホ）前記外壁タイル（１）と目地部（２）の表面を、高圧洗浄水で洗浄する洗浄工程。
少なくとも以上の工程を順次行うことを特徴とする外壁タイル用被膜の除去方法。 B) A release agent application step of applying an alcohol-based release agent (4) to a transparent film (3) coated on the surface of the outer wall tile (1) for preventing tile peeling or for waterproofing.
B) A step of preventing the coated surface from drying by bringing the synthetic resin sheet (5) subjected to the corona discharge treatment into close contact with the coated surface of the alcohol-based release agent (4).
C) A film softening step in which the alcohol-based release agent (4) is allowed to stand for a predetermined time and is permeated into the film (3) to soften the film (3).
2) After a predetermined time, when the synthetic resin sheet (5) is peeled off, the softened film (3) is attached to the synthetic resin sheet (5) to remove the film (3). ..
E) A cleaning step of cleaning the surfaces of the outer wall tile (1) and the joint portion (2) with high-pressure washing water.
A method for removing a coating film for an outer wall tile, which comprises performing at least the above steps in sequence.
The outer wall tile coating according to claim 1, wherein in the step of preventing the coated surface from drying, when the synthetic resin sheet (5) is brought into close contact with the coated surface of the alcohol-based release agent (4), a sand bone roller is used. How to remove.
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