Described here is a method for determining the mean length of filaments formed on rotational atomization of a coating material composition, the method including atomization of the coating material composition by means of a rotational atomizer including as application element a bell cup capable of a rotation (1), optical capture of the filaments formed here at the bell cup edge, by means of at least one camera (2), and digital evaluation of the optical data obtained in this way, to give the mean filament length of those filaments formed on atomization that are located at the edge of the bell cup (3), as well as methods for compiling an electronic database and for screening coating material compositions when developing paint formulations.

Disclosed herein is a method for determining a drop size distribution within a spray and/or a homogeneity of this spray, the spray being formed on atomization of a coating material composition, which includes atomization of the coating material composition by means of an atomizer, the atomization producing a spray, optical capture of the drops of the spray formed, by a traversing optical measurement (2), and determination of at least one characteristic variable of the drop size distribution within the spray and/or of the homogeneity of the spray, on the basis of optical data obtained as per step (2). Also described herein are methods for compiling an electronic database and for screening coating material compositions when developing paint formulations, carried out on the basis of the method.

An atomizer having an atomizer head configured to atomize a first fluid. The atomizer includes, in addition, a measurement module including at least one sensor configured to measure the values of at least one parameter of the atomizer, an electronic control module configured to receive the measured values, and a power supply configured to electrically supply the control module with a power supply voltage.

An installation including an atomizer configured to atomize a fluid, a robot and a first station, the robot being configured to move the atomizer in a predetermined reference frame between at least a first position and a second position, the atomizer being configured to atomize the fluid when the atomizer is in the first position, a distance being defined between the atomizer and the first station, the distance when the atomizer is in the second position being strictly less than the distance when the atomizer is in the first position. The first station includes at least one sensor configured to measure at least one value of a parameter of the atomizer when the atomizer is in the second position.

A turbine for a fluid-ejecting device, including a body and a rotor rotating a bowl about an axis, the turbine also including a tube mounted coaxially with the body and intended to be mounted coaxially with a skirt, a first portion of the tube being surrounded by the turbine body and a second portion being surrounded by the skirt and offset in the downstream direction relative to the first portion, the tube being rotatable about the axis relative to the body, the body preventing the translational movement of the tube parallel to the axis, and the outer face of the aforementioned second portion having a first thread engaging with a second thread formed on the skirt in order to press the skirt against the turbine body.

Disclosed is an electrostatic coating apparatus comprising: an atomizing head cleaning flow path (13) which is disposed at a coating machine (3) and through which a cleaning fluid for cleaning a rotary atomizing head (6) and a front end of a feed tube (8C) of a cartridge (8) flows; a cleaning fluid flow path (14) connecting a cleaning fluid supply source (15) with the atomizing head cleaning flow path (13); a cleaning fluid valve (16) disposed in the cleaning fluid flow path (14) and configured to open and close the cleaning fluid flow path (14); a discharge air flow path (17) connected to the atomizing head cleaning flow path (13) and through which the discharge air flows; a cleaning fluid discharge flow path (20) connected to the cleaning fluid flow path (14) at a connection point (D) located between the atomizing head cleaning flow path (13) and the cleaning fluid valve (16); a discharge air switching valve (21) disposed in the atomizing head cleaning flow path (13) and configured to open and close the atomizing head cleaning flow path (13); and a cleaning fluid discharge valve (22) disposed in the cleaning fluid discharge flow path (20) and configured to open and close the cleaning fluid discharge flow path (20).

Described herein is a method for producing at least one coating (B1) on a substrate, including provision of a coating material composition (BZ1) (1), determination of a mean filament length of filaments formed on rotational atomization of the coating material composition (BZ1) provided as per step (1) (2), reduction of the determined mean filament length (3), application of at least the coating material composition (BZ1) obtained after step (3), with reduced mean filament length, to a substrate, to form at least one film (F1) (4), and physical curing, chemical curing and/or radiation curing at least of the at least one film (F1) formed on the substrate as per step (4), to produce the coating (B1) on the substrate (5). Also described herein is a coating (B1) located on a substrate and obtainable by means of this method.

This rotary atomizing head used in a rotary atomizing head type painting device is provided with: an atomizing head main body formed in a bell shape or a cup shape; an attachment part which is connected to the atomizing head main body and attaches the atomizing head main body to a motor rotary shaft of the rotary atomizing head type painting device; and a resin mold in which an IC tag containing unique information about the rotary atomizing head stored therein is embedded, and which is attached to the attachment part, wherein the attachment part can have a prescribed structure, the resin mold is attached to the attachment part through a prescribed method, and the IC tag is embedded in the resin mold such that the surface of an embedded coil antenna adopts a prescribed state.

A turbine for a fluid-spraying device including a turbine body, and a rotor rotating a bowl relative to the body about an axis, the rotor being surrounded by the turbine body in a plane perpendicular to the common axis, the turbine body guiding the rotation of the rotor, the rotor being rotated by a stream of gas, the turbine body receiving the stream of gas at the outlet of the rotor, and delimiting at least one outlet duct configured to guide a first portion of the received stream into a space delimited in a plane perpendicular to the common axis by the bowl and a skirt.

An electrostatic rotary sprayer for a coating product, including a spraying cup, a body, a drive turbine assembled in the body and configured to rotate the spraying cup about an axis of rotation defined by the body. The sprayer also includes electrodes for charging the coating product sprayed by the spraying cup, these electrodes being assembled on a ring attached on the body and each supplied with high voltage through a resistance. Each resistance extends axially outside the ring and is equipped, at its end opposite the electrode that it supplies, with a first electrical connection plug on a second plug of corresponding geometry provided on the body, with a movement parallel to the axis of rotation, and in that the ring is configured to be assembled and connected on the body, or disassembled and disconnected from the body while being equipped with electrodes and resistances.