Introduction - Mumbai

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What is Plasma surface treatment ?

Plasma is a partially-ionized gas, in which the degree of ionization fluctuates and may sometimes be very low. More than 99% of the universe surrounding us is in a plasma state. Examples of this include lightning, polar lights, sunlight or candlelight. As plasma is created by high energy input, it is considered the 4th state of matter and is typically in a gaseous state.

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Technically,

Plasma is generated through the creation of an electric field which ignites a gas flowing through (e.g. air or other gases) to form plasma. Plasma is quasi-neutral, but as it consists of free charge carriers or highly-reactive particles, it is energy-rich and can trigger various physical and chemical reactions. This characteristic is used in industry to generate various effects.

Why pre-treat with plasma ?

To be able to successfully bond, coat, print or paint polymers and metals, the surface must first meet a few requirements. It has to be very clean and has to be sufficiently active to form an adhesive bond with the coating material. Plasma pre-treatment takes care of both of these requirements: The reactive plasma species transform the finest organic layers to the gas phase during ultra-fine cleaning. And with polymers, the functional groups described above are bonded to the outer-most molecular layer, the surface polarity increases and the prerequisite for adhesive bonding with the applied material is fulfilled.

Principle of Surface Treatment by plasma treatment

The ion and electron mixed in the plasma zone collide at high-speed on the surface of the substrate, which eliminates the contaminant ( dust & release oils etc. ) and helps the functional coating radical to stick on the surface. It is possible to get the rising effect and hydrophile effect on the surface through the above progress. This means the increase of surface energy. Plasma surface treatment system for 2D or 3D objective enhances surface energy and it leads enhancement of adhesion for those processes such as printing, coating, laminating, transforming and extrusion molding and so on.