Ever wonder how 3D surface treating works or what it actually does to the product you are treating? Here's your chance. We'll discuss how air (corona) plasma and flame plasma treating methods work.
Air plasma is formed by blowing atmospheric air past high-voltage powered electrodes and is sometimes referred to as corona treatment.
The electrical discharge positively charges the ion particles surrounding it. Through direct contact, these particles positively charge the treated area of the object’s surface. This makes the surface more receptive to any applied substance such as inks.
Air plasma is a popular surface-treatment technology because it is effective, easy to use and inexpensive to operate.
Flame plasma is formed when flammable gas and atmospheric air are combined and combusted to form an intense blue flame. The surfaces of objects are made polar as species in the flame plasma affect the distribution and density of electrons on the surface. This polarization is made through oxidation. In addition, certain functional groups are deposited on the surface of these substrates.
Flame Plasma generates more heat than other treatment processes, but it also offers higher treatment levels and a longer shelf-life. Flame treatment is commonly used in processing of injection and blow molded products because of the thickness, size and shape of the parts. These systems are generally used when treating larger, heavier items or when a higher surface-energy level or longer storage life is required from the part.
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