Corona is the phenomenon of localized discharge of the surface of a charged body in a gaseous or liquid medium. It often occurs around high-voltage power lines and near the tips of charged bodies. Ozone, nitrogen oxide and other substances produced in the corona process. 110kV substations and lines, often appear similar to the corona layer of light, issued by "snorting" and "ah mile" sound. The corona generated by high voltage electricity consumes electrical energy and interferes with radio waves. Corona is a unique form of stabilized discharge from an electric field.
Industrial corona machine is commonly used to solve the problems of printing fading, material adhesion is not strong, the coating off uneven, color is not full, printing can not meet the requirements and so on. The solution is to improve the surface adhesion of the material, so as to solve these problems well. The current popular method is to use corona for surface treatment, which can improve the surface adhesion of the material. Roughening the surface of the material, improve the surface tension of the material, so that inks, glues and paints are better bonded to the surface of the treated material; at the same time, the ozone produced during the corona process can change the molecular structure of the material surface, from non-polar to polar. Printing can ensure full color and clean picture for a long time, and achieve ideal printing and bonding effect.
The principle of corona treated materials is to utilize high frequency and high voltage to discharge on the surface of treated plastics (high frequency AC voltage up to 5000-15000V/m2) to produce low temperature plasma, which generates a free radical reaction on the surface of the plastics and cross-links the polymers. Increase the surface roughness of the material, increase the wettability of polar solvents - these ions enter the surface of the printing body through electric shock and penetration, destroying its molecular structure, and then oxidize and polarize the molecules of the treated surface, thus improving the adhesion of the printing surface.
Localized self-sustained discharge of a gaseous medium in an inhomogeneous electric field. It is the most common form of gas discharge. In the vicinity of a tip electrode with a large radius of curvature, a corona discharge occurs because the gas is ionized and excited by a local electric field strength that exceeds the ionizing field strength of the gas. When corona occurs, light can be seen around the electrode, accompanied by a zippy sound. Corona discharge can be a relatively stable form of discharge or an early stage of development in the process of uneven electric field gap penetration.
Scope of application of corona machine
Corona machine can handle a variety of homogeneous film materials. Such as plastic film, metal plate, metal film, vacuum aluminized film. It can be used for polyethylene, polypropylene, polyvinyl chloride, polyamide, polyester, polycarbonate, fluoroplastics and various corresponding copolymers. Plasma cleaning machine is used for various shaped parts, such as electronic components.
Hefeng Machinery Group has been focusing on the development and application of surface treatment industry for more than 20 years. Corona machine, corona treatment machine, plasma machine, static generator, static eliminator, dust remover, UV curing, UV power supply, electronic UV, UV light box, plasma treatment system, vacuum plasma, spark machine, plasma treatment, flame treatment machine, electronic spark machine, EDM impact machine, surface treatment machine, polymer Surface Flowering Machine, UV lamp, UV transformer, and so on. It is a national high-tech enterprise integrating R&D, production and sales.
Our core competitiveness comes from the fact that we never stop launching new products and designing molds, and vigorously investing in the research and development of new products, it is this guiding principle that makes us different, which also enables us to become a real solution-oriented company in the industry. From the design of the solution to the final inspection of the equipment, we pay meticulous attention to every detail to ensure that the quality of our products and customer service meets the highest standards, and with our highly qualified service team and experienced technicians, we have an international reputation as a solid and reliable partner.
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