Abstract: A flake pigment according to the present invention includes a flake particle, a single-layer or multiple-layer coat covering a surface of the flake particle, and a fine particle. An outermost layer of the coat includes a copolymer including one or more type of first bond unit originating from a fluoric polymerizable monomer having fluorine and one or more type of second bond unit originating from a polymerizable monomer having phosphate group. The fine particle is fixed with the outermost layer being interposed and has a characteristic to provide triboelectrification characteristics to the flake pigment.

Abstract: A powder coating apparatus is provided with: a coating booth, wherein a work to be coated is moved by a conveyer in the coating booth; and a coating gun that sprays powder coating material to the moving work. In the powder coating apparatus, the coating booth includes a movable wall on at least one of a side wall and a ceiling wall of the coating booth. The movable wall is configured to move in accordance with the work passing the coating booth.

Abstract: The powder coating apparatus is provided with a coating booth into which a ground-connected object to be coated can be delivered and a plurality of coating tools respectively provided on the coating booth and adapted to discharge electrically charged powder coating materials onto the object to be coated. At least two of the coating tools are disposed on walls of the coating booth such that discharge openings thereof for discharging the powder coating materials are opposed to each other. The respective opposed discharge openings simultaneously discharge the powder coating materials onto the object to be coated. The powder coating materials, which are discharged from one of the at least two coating tools and are diffusing in the interior portion of the coating booth, are moved up to the object to be coated by a delivering air discharged together with the powder coating materials from the other of the two coating tools.

Abstract: A flake pigment according to the present invention includes a flake particle, a single-layer or multiple-layer coat covering a surface of the flake particle, and a fine particle. An outermost layer of the coat includes a copolymer including one or more type of first bond unit originating from a fluoric polymerizable monomer having fluorine and one or more type of second bond unit originating from a polymerizable monomer having phosphate group. The fine particle is fixed with the outermost layer being interposed and has a characteristic to provide triboelectrification characteristics to the flake pigment.

Abstract: A powder coating apparatus is provided with: a coating booth, wherein a work to be coated is moved by a conveyer in the coating booth; and a coating gun that sprays powder coating material to the moving work. In the powder coating apparatus, the coating booth includes a movable wall on at least one of aside wall and a ceiling wall of the coating booth. The movable wall is configured to move in accordance with the work passing the coating booth.

Abstract: A powder feeding device for feeding powder at a constant rate has a container for storing a powdered material and a discharge device mounted in the container at a lower portion thereof for discharging the powdered material from the container at a constant rate. A vibrator is mounted on the container or on a wire net mounted in the container to separate air from the powder. The powder may be supplied from a powder tank to the powder container.

Abstract: A fluidized type paint powder tank has a fluidizing chamber for fluidizing paint powder and a storage chamber into which the paint powder in the fluidizing chamber is fed to keep it still. There is also provided a paint supply device for an electrostatic painting apparatus that includes a paint tank for containing paint powder and a painting gun coupled to the paint tank through an injector and a hose. The device includes a discharge member for discharging the paint powder from the paint tank and a hopper for receiving the paint powder discharged by the discharge member. A screw feeder is provided under the hopper. With this arrangement, the paint powder supplied at a uniform rate by the screw feeder is fed into the injector.

Abstract: A fluidized type paint powder tank has a fluidizing chamber for fluidizing paint powder and a storage chamber into which the paint powder in the fluidizing chamber is fed to keep it still. There is also provided a paint supply device for an electrostatic powder painting apparatus that includes a paint tank for containing paint powder and a painting gun coupled to the paint tank through an injector and a hose. The device includes a discharge member for discharging the paint powder from the paint tank and a hopper for receiving the paint powder discharged by the discharge member. A screw feeder is provided under the hopper. With this arrangement, the paint powder supplied at a uniform rate by the screw feeder is fed into the injector.

Abstract: A fluidized type paint powder tank has a fluidizing chamber for fluidizing paint powder and a storage chamber into which the paint powder in the fluidizing chamber is fed to keep it still. There is also provided a paint supply device for an electrostatic powder painting apparatus that includes a paint tank for containing paint powder and a painting gun coupled to the paint tank through an injector and a hose. The device includes a discharge member for discharging the paint powder from the paint tank and a hopper for receiving the paint powder discharged by the discharge member. A screw feeder is provided under the hopper. With this arrangement, the paint powder supplied at a uniform rate by the screw feeder is fed into the injector.