METHOD FOR PERFORMING FOAM TYPE AIRLESS APPLICATION OF RELEASE AGENT ONTO EXISTING COATING FILM TO PEEL THE SAME

To make it possible, by wet type peeling technique, to simultaneously perform both of preventing a release agent from scattering when applying the release agent and increasing a coating film thickness of the release agent and thus a coating amount thereof without dripping of the release agent, which was applied onto a surface of an existing coating film, from the existing coating film.SOLUTION: A release agent 20 itself is pressurized and the release agent 20 is injected from a nozzle 92 by use of an airless spray gun 50 having the nozzle 92, thereby dividing the release agent 20 into a plurality of droplets. The injected release agent 20 is applied onto a coating film surface 14, the plurality of droplets of the release agent 20 collide with the coating film surface during application thereof, and thus, the plurality of droplets respectively entrain air in the atmosphere and are foamed, whereby the release agent 20 is applied onto the coating film surface 14 in the foamed state. After a required time has lapsed from completion of application thereof, the existing coating film 14, which has been softened by the release agent 20, is physically peeled from a structure 12.SELECTED DRAWING: Figure 1 【課題】湿式剥離技術であって、剥離剤の塗布時にその剥離剤が飛散しないようにすることと、既存塗膜の表面上に塗布された剥離剤が既存塗膜から垂れることなくその剥離剤の塗膜厚ひいては塗布量を増加させることとを同時に行うことを可能にする。【解決手段】ノズル９２を有するエアレススプレーガン５０を用いることにより、剥離剤２０自体を加圧して剥離剤２０をノズル９２から噴射し、それにより、剥離剤２０を複数の液滴に分断する。その噴射された剥離剤２０を塗膜表面１４上に塗布し、その塗布に際し、剥離剤２０の複数の液滴が塗膜表面に衝突し、それにより、前記複数の液滴がそれぞれ大気中のエアを巻き込んで発泡化し、それにより、剥離剤２０が発泡状態で塗膜表面１４上に塗布される。その塗布完了から所要時間の経過後、剥離剤２０によって軟化した既存塗膜１４を構造体１２から物理的に剥離する。【選択図】図１