The invention relates to a painting booth for coating components, particularly for painting motor vehicle body components, with a booth wall (10) and a coating agent line (1), which runs from the exterior of the booth through the booth wall (10) into the interior of the booth. The invention proposes that the coating agent line (1) has an electrically conductive and axially running potential-compensating element (15) inside the line for electrically connecting the coating agent inside the line to an electrical reference potential, said potential-compensating element (15) extending from the exterior of the booth through the booth wall (10), so that the free end of the potential-compensating element (15) is inside the booth.

An air spray painting apparatus for sending a fan of atomized paint spray via a first entrainment flow of carrier fluid and of a second flow of carrier fluid, separate from the first entrainment flow and capable of forming the spray fan, includes electrical heating elements for heating to one and the same temperature the first and second flows of carrier fluid, and a unit for regulation and control of the heating elements.

An air spray painting apparatus for sending a fan of atomized paint spray via a first entrainment flow of carrier fluid and of a second flow of carrier fluid, separate from the first entrainment flow and capable of forming the spray fan, includes electrical heating elements for heating to one and the same temperature the first and second flows of carrier fluid, and a unit for regulation and control of the heating elements.

There is provided an electrostatic film formation device including a powder feeder feeding powder, a substrate on which a powder film is to be formed from the powder, and a DC power supply applying voltage to the powder feeder and the substrate. The DC power supply applies the voltage to draw the powder from the powder feeder to the substrate with electrostatic force. The electrostatic film formation device further includes a masking member disposed between the powder feeder and the substrate. The masking member is formed with a passing port allowing the powder to pass from the powder feeder to the substrate. The masking member is disposed in the state where the masking member is not in contact with the powder film to be formed.

Provided are a pressure sensitive adhesive sheet including, on a substrate, a resin layer containing a resin which is a resin layer containing a resin part (X) containing a resin as a main component and a particle part (Y) consisting of fine particles, at least a surface () of the resin layer on the side opposite to the side thereof on which the substrate is provided, having pressure sensitive adhesiveness, wherein a bending stress coefficient k in the MD direction of the substrate is 20 N.Math.mm or less, a 10% elongation strength in the MD direction thereof is 260 N/15 mm or less, and concave portions satisfying specified requirements are included on the surface () of the resin layer; and a method for producing the pressure sensitive adhesive sheet.

Provided are a pressure sensitive adhesive sheet including, on a substrate, a resin layer containing a resin which is a resin layer containing a resin part (X) containing a resin as a main component and a particle part (Y) consisting of fine particles, at least a surface () of the resin layer on the side opposite to the side thereof on which the substrate is provided, having pressure sensitive adhesiveness, wherein a bending stress coefficient k in the MD direction of the substrate is 20 N.Math.mm or less, a 10% elongation strength in the MD direction thereof is 260 N/15 mm or less, and concave portions satisfying specified requirements are included on the surface () of the resin layer; and a method for producing the pressure sensitive adhesive sheet.

Exemplary coating methods and coating systems, e.g., for coating the component surface of a component with a coating agent by means of an atomizer in a coating system, for example to paint a body part of a motor vehicle with paint, are disclosed. An exemplary method comprises moving the atomizer over the component surface of the component to be coated, or moving the component in the spray jet, thereby applying the coating agent to the component surface by means of the atomizer. The atomizer may be operated with at least one electrical and/or kinematic operating variable comprising a certain voltage for the electrostatic charging of the coating agent and/or a certain rotational speed of a rotating spray element of the atomizer. In one example, the electrical and/or kinematic operating variable of the atomizer may be dynamically varied during the movement of the atomizer.

Exemplary coating methods and coating systems, e.g., for coating the component surface of a component with a coating agent by means of an atomizer in a coating system, for example to paint a body part of a motor vehicle with paint, are disclosed. An exemplary method comprises moving the atomizer over the component surface of the component to be coated, or moving the component in the spray jet, thereby applying the coating agent to the component surface by means of the atomizer. The atomizer may be operated with at least one electrical and/or kinematic operating variable comprising a certain voltage for the electrostatic charging of the coating agent and/or a certain rotational speed of a rotating spray element of the atomizer. In one example, the electrical and/or kinematic operating variable of the atomizer may be dynamically varied during the movement of the atomizer.

A switch mode power supply circuit with high voltage output, an electrostatic spray apparatus and agricultural plant protection apparatus using the same are provided. The switch mode power supply circuit is electrically connected in series with at least a pre-stage power converter and a post-stage power converter. In order to simplify the control, the switch of the pre-stage power converter is omitted, only one switch of the post-stage power converter is adopted to perform synchronous control. Since the multiple sets of power conversion circuits in the previous stage are connected in series, the turn ratio of the transformer in the power converter in the subsequent stage can be reduced. Therefore, the transformer can be miniaturized and the power supply circuit would be more suitable for agricultural plant protection machine and electrostatic spray apparatus.

A switch mode power supply circuit with high voltage output, an electrostatic spray apparatus and agricultural plant protection apparatus using the same are provided. The switch mode power supply circuit is electrically connected in series with at least a pre-stage power converter and a post-stage power converter. In order to simplify the control, the switch of the pre-stage power converter is omitted, only one switch of the post-stage power converter is adopted to perform synchronous control. Since the multiple sets of power conversion circuits in the previous stage are connected in series, the turn ratio of the transformer in the power converter in the subsequent stage can be reduced. Therefore, the transformer can be miniaturized and the power supply circuit would be more suitable for agricultural plant protection machine and electrostatic spray apparatus.