Provided is a powder coating device including a powder fluidization tank including a bottom member having a plurality of spacers interposed between a first plate member and a second plate member, a fixing member to which the powder fluidization tank is fixed, a coupling support member coupling and supporting the first plate member to the fixing member, and a vibration mechanism coupled to the first plate member, wherein the coupling support member includes an elastic member.

Provided is a powder coating device including a powder fluidization tank including a bottom member having a plurality of spacers interposed between a first plate member and a second plate member, a fixing member to which the powder fluidization tank is fixed, a coupling support member coupling and supporting the first plate member to the fixing member, and a vibration mechanism coupled to the first plate member, wherein the coupling support member includes an elastic member.

Provided is a powder coating device including a powder fluidization tank including a bottom member, a fixing member to which the powder fluidization tank is fixed, a coupling support member coupling and supporting the bottom member to the fixing member, and a vibration mechanism coupled to the bottom member, wherein the coupling support member includes a rubber laminate in which an elastic member and a rigid member are stacked, and is pressed by the bottom member and the fixing member.

Provided is a powder coating device including a powder fluidization tank including a bottom member, a fixing member to which the powder fluidization tank is fixed, a coupling support member coupling and supporting the bottom member to the fixing member, and a vibration mechanism coupled to the bottom member, wherein the coupling support member includes a rubber laminate in which an elastic member and a rigid member are stacked, and is pressed by the bottom member and the fixing member.

An automated process for producing exposed electrical contact areas on the conductor part of an epoxy coated bus bar. When the epoxy coating is in the glassy state, one can safely and economically, preferably via automated apparatus, put the epoxy into the rubbery state by positioning the bar and applying localized heat at a select area of the coating; monitoring the heating to above the glass transition temperature of the epoxy, bringing cutting tools into contact with the epoxy for cutting and removing the rubbery coating away from the bus bar, and cooling the bus bar to bring adjacent coating back to the glassy state, thereby leaving an exposed electrical contact area of conductor on the bus bar with little or no surface damage.

An automated process for producing exposed electrical contact areas on the conductor part of an epoxy coated bus bar. When the epoxy coating is in the glassy state, one can safely and economically, preferably via automated apparatus, put the epoxy into the rubbery state by positioning the bar and applying localized heat at a select area of the coating; monitoring the heating to above the glass transition temperature of the epoxy, bringing cutting tools into contact with the epoxy for cutting and removing the rubbery coating away from the bus bar, and cooling the bus bar to bring adjacent coating back to the glassy state, thereby leaving an exposed electrical contact area of conductor on the bus bar with little or no surface damage.

The present invention discloses a dry powder composition comprising a thermosetting resin in particulate form, wherein the dry powder composition has a particle size measured according to ISO 13320 (2009) characterized by a D.sub.v90 of 50 μm or lower, a D.sub.v50 in the range of 5.1 to 12.5 μm, and a ratio of $\frac{\mathrm{Dv}90-\mathrm{Dv}10}{\mathrm{Dv}50}$
in the range of 1.5 to 4.2. The present invention also discloses processes for preparing the dry powder using jet milling, and processes of applying the dry powder composition to a metal surface. Furthermore, the present invention discloses the uses of the dry powder composition as a bonding material or as an adhesion promoter in a polymer compound.

The present invention discloses a dry powder composition comprising a thermosetting resin in particulate form, wherein the dry powder composition has a particle size measured according to ISO 13320 (2009) characterized by a D.sub.v90 of 50 μm or lower, a D.sub.v50 in the range of 5.1 to 12.5 μm, and a ratio of $\frac{\mathrm{Dv}90-\mathrm{Dv}10}{\mathrm{Dv}50}$
in the range of 1.5 to 4.2. The present invention also discloses processes for preparing the dry powder using jet milling, and processes of applying the dry powder composition to a metal surface. Furthermore, the present invention discloses the uses of the dry powder composition as a bonding material or as an adhesion promoter in a polymer compound.

A flow inspection method includes: a flow step of making powder resin flow in a housing portion of a flow tank; a viscosity measurement step of measuring a viscosity of the powder resin flowing in the housing portion; and a judgment step of judging whether or not an estimate of a bulk density of the powder resin flowing in the housing portion is less than or equal to a bulk density permissible value, the estimate being obtainable from a correlation, calculated in advance, between the bulk density and a viscosity of the powder resin flowing in the housing portion, and a measured value of the viscosity obtained in the viscosity measurement step.

A flow inspection method includes: a flow step of making powder resin flow in a housing portion of a flow tank; a viscosity measurement step of measuring a viscosity of the powder resin flowing in the housing portion; and a judgment step of judging whether or not an estimate of a bulk density of the powder resin flowing in the housing portion is less than or equal to a bulk density permissible value, the estimate being obtainable from a correlation, calculated in advance, between the bulk density and a viscosity of the powder resin flowing in the housing portion, and a measured value of the viscosity obtained in the viscosity measurement step.