cylinder 141 a sucker 144 attached at the end of said pipe 143 and a vacuum tube 145 in which a trap 146 intermediates said sucker 144 is made of a rubber a plastic a metal and the like said sucker 144 of said removing tool 140 contacts with the upper side 113 of said masking member 111 and said masking member 111 is sucked up by said sucker 144 said coating layer 150 is sucked into said vacuum tube 145 through said sucker 144 and said pipe 143 and collected in said trap 146 after this said piston rod 142 is lifted by the operation of said oil pressure cylinder 141 to peel said masking member 111 from said part 131 of said article 130 as shown in fig5 said masking member 111 may be removed from said sucker 144 of said removing tool 140 by opening said vacuum tube 145 to the atmosphere or by putting air into said vacuum tube 145 fig6 a and fig6 b show other embodiments of said masking member 111 used to protect a part having a flat surface of an article in the first embodiment fig6 a a vessel type masking member 111d has a flange 112d at the open end and an adhesive layer 114d is formed on said flange 112d further said masking member 111d has a smooth and flat surface 115d on the outside of the bottom 113d said masking.