An electrostatic atomizing coating apparatus and method incorporate a rotary head having a base portion, an open end and a plurality of grooves formed radially on an inner peripheral surface of the open end, an inside diameter of the rotary head increasing from the base portion toward the open end, and a motor configured to rotate the rotary head to discharge a thread-shaped paint. A voltage is applied to the rotary head so as to form an electrostatic field between the open end of the rotary head and an earthed coating target and to electrostatically atomize the thread-shaped paint discharged from the open end. Voltage output from the generator is controlled so as to adjust an intensity of the electrostatic field and to control a particle diameter of the electrostatically atomized thread-shaped paint.

A bell cup (3) of a rotary atomization-type coating device (1) is provided. This device has a rotary shaft (13) and a feed tube (15) inserted in the rotary shaft. The bell cup is fitted to a tip end part of the rotary shaft and has a coating material spreading surface (31) on an inner surface of the bell cup. The feed tube discharges a coating material to the coating material spreading surface. The coating material spreading surface includes a region extending from a predetermined position on a proximal end side to a distal end edge. The region is constituted of a convex curved surface toward an extension of the rotary shaft. The outermost surface of at least part (31B) of the coating material spreading surface is covered by a diamond-like carbon film (50) free from silicon at least on its outermost surface.

An electrostatic atomizing coating apparatus and method incorporate a rotary head having a base portion, an open end and a plurality of grooves formed radially on an inner peripheral surface of the open end, an inside diameter of the rotary head increasing from the base portion toward the open end, and a motor configured to rotate the rotary head to discharge a thread-shaped paint. A voltage is applied to the rotary head so as to form an electrostatic field between the open end of the rotary head and an earthed coating target and to electrostatically atomize the thread-shaped paint discharged from the open end. Voltage output from the generator is controlled so as to adjust an intensity of the electrostatic field and to control a particle diameter of the electrostatically atomized thread-shaped paint.

A curved substrate with a film includes a substrate having a first main surface, a second main surface and an end surface, and an antiglare film provided on the first main surface. The substrate has a flat portion and a bent portion. A value obtained by dividing a reflected-image diffusibility index value R of the bent portion by the sum of the reflected-image diffusibility index value R of the bent portion and a reflected-image diffusibility index value R of the flat portion is 0.3 or higher and 0.8 or less.

A bell cup (3) of a rotary atomization-type coating device (1) is provided. This device has a rotary shaft (13) and a feed tube (15) inserted in the rotary shaft. The bell cup is fitted to a tip end part of the rotary shaft and has a coating material spreading surface (31) on an inner surface of the bell cup. The feed tube discharges a coating material to the coating material spreading surface. The coating material spreading surface includes a region extending from a predetermined position on a proximal end side to a distal end edge. The region is constituted of a convex curved surface toward an extension of the rotary shaft. The outermost surface of at least part (31B) of the coating material spreading surface is covered by a diamond-like carbon film (50) free from silicon at least on its outermost surface.

A head is disclosed for use with a manufacturing system. The head may have a housing configured to discharge a tubular structure reinforced with at least one continuous fiber and having a three-dimensional trajectory, and a cure enhancer operatively connected to the housing and configured to cure a liquid matrix in the tubular structure during discharge. The head may also have a nozzle configured to discharge a fill material into the tubular structure, and a wand extending from the housing to the nozzle.

A coating system for coating objects, wherein a coating material can be dispensed by an application device with a dispensing arrangement. A supply system having at least first and second feed containers for coating material are connected via first and second supply lines and first and second material valves, respectively, to the dispensing arrangement. Also provided is a cleaning system having at least one first cleaning line and a second cleaning line, to which rinsing agent can be fed via a first rinsing agent feed line and a second rinsing agent feed line, respectively. The first and second cleaning lines are connected via first and second cleaning valves to the first and supply lines, respectively. The first cleaning line and the second cleaning line are connected via a connection line at connection points disposed in front of each cleaning valve relative to the flow direction towards the dispensing arrangement.

A coating system for coating objects, wherein a coating material can be dispensed by an application device with a dispensing arrangement. A supply system having at least first and second feed containers for coating material are connected via first and second supply lines and first and second material valves, respectively, to the dispensing arrangement. Also provided is a cleaning system having at least one first cleaning line and a second cleaning line, to which rinsing agent can be fed via a first rinsing agent feed line and a second rinsing agent feed line, respectively. The first and second cleaning lines are connected via first and second cleaning valves to the first and supply lines, respectively. The first cleaning line and the second cleaning line are connected via a connection line at connection points disposed in front of each cleaning valve relative to the flow direction towards the dispensing arrangement.

A rotary atomiser bell cup comprising a bell portion 5 for spraying media in use and a hub portion 6 via which the bell portion 5 is rotatingly drivable in use, wherein the hub portion 6 is a machined metal portion and the bell portion 5 has been built up on the hub using an additive manufacturing process.

A coating device includes a rotary head, a power supply part that applies a voltage to the rotary head, and a control part that controls the power supply part. The rotary head is configured so that a coating material is electrostatically atomized. The control part is configured so as to calculate a discharge current based on a total current flowing from the power supply part to the rotary head and a leak current, and control the power supply part based on the discharge current.