PURPOSE: To facilitate masking work in application of anticorrosive coating etc., by attaching masking material composed of polystyrene foam having independent foams and density of 12.5-50g/l to a metal structure through a tacky layer.
CONSTITUTION: A masking material 13 is such that on both sides of a plate 13A composed of polystyrene foam having independent foams therein and with density of 12.5-50g/l grooves 13B are formed in a tessellated form, while a tacky layer 13C is formed over the whole surface on one side of the plate, over which a mold-releasing sheet 13D is applied. After mold-releasing sheets 13D are removed from the masking material 13, the masking material is torn along the grooves 13B to form it into a piece of material according to the size of an area 2 of a metal structure 1, to which treatment for preventing rust, noise, and vibration should not be applied, whereby the material is put to the area 2 through the tacky layer 13C. After formation of coating layer 4, the material is separated manually by means of a hook 9. Configurations of masking material 13 are prepared based on the shape of metal structures to be coated. In this manner, masking work can be easily performed.
MAKINO REIJI
IWATA HISAMI
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