Corona

Many substrates, especially PP-PE plastics require pre-treatment to prepare or improve the bonding surface for ink adhesion. The corona plasma is generated by the application of high voltage to an electrode that has a sharp point. The plasma charge forms that the tip of this sharp point. The corona plasma treatment changes the surface energy of the substrate.

The corona pre-treatment (sometimes referred to as air plasma) device is optional equipment that can be added to a standard platform or purchased as a standalone pre-treatment system.

This unit has the following features:

• Conveyors and parts fixtures must be specially designed. This unit is not suitable or metal parts or metal fixtures.
• High Voltage/Low Temperature electrical discharge is suitable for delicate materials, which are normally damaged by flame pre-treatment
• Generally preferred over flame systems for clean room installations
• Stand-alone units can be used with automated part handling process. Units also available for in-line production applications