摘要:
In a method of corona discharge processing of resin formings surface, excellent corona discharge processing is possible, even if there is a distance between the resin formings and the discharge electrode, by generating a high voltage pulse having a pulse width of 1µs or more, an average electric field strength of 4 to 20 kv/cm denoted by applied voltage (wave height) versus interelectrode distance, and a pulse frequency of 10 pps or more. This processing is performed by the apparatus which comprises arranging a transfer conveyor to transfer the resin formings, a counter-electrode placed in a down side of the transfer conveyor, a dielectric to cover a surface of the counter-electrode, and a number of discharge electrodes which are arranged in a definite distance above the resin formings along the transfer route.
摘要:
An object of the invention is to present a corona discharge processing apparatus capable of performing uniform and excellent corona discharge processing, on the work of any thickness or shape, with the constant processing effect regardless of the thickness and shape of the work. A corona discharge processing apparatus of the invention comprises an excitation electrode and a counter-electrode, and generates a corona discharge by applying a high voltage between them, thereby applying corona discharge processing on the work, wherein the excitation electrode and the counter-electrode are both disposed on a surface side of the work with an interval between them.
摘要:
There is provided a method for coating a molded resin article such as an automotive part, and improving its electrical conductivity by a high productivity procedure which avoids using an inorganic conductive primer. The substrate is coated with a composition containing a film-forming component and a specified nitrogen-containing compound and the coated surface is subjected to corona discharge treatment and is then optionally electrostatically coated.
摘要:
The plasma generating apparatus (1) is provided with a simple switching circuit (3) for generating AC power of high frequency by a magnet (16) for switch driving use for repeating the excitation and the demagnetization by AC power and a contact switch (S) to be opened or closed by the magnet (16), a simple voltage transforming circuit (4) for converting AC power of high frequency outputted from the switching circuit (3) into AC power of high voltage, a discharge electrode (5) for receiving AC power of high frequency and high voltage outputted from the voltage transforming circuit (4) to cause corona discharging, when the opposite electrode has been approached, to cause the plasma. The plasma producing apparatus (1) is easier to be carried, because the switching circuit (3), the voltage transforming circuit (4), and the discharge electrode (5) are respectively simple, compact in construction. The apparatus (1) becomes smaller in power capacity and is reduced in cost.