Atmospheric pressure plasma

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Atmospheric pressure plasma is suitable for a wide range of applications. Primarily, however, the systems are intended for local pretreatment of different surfaces, e.g. cleaning and activation of polymers, metals, ceramic, glass and hybrid materials. But the Plasma Jet process can also be used for coating. Thanks to their unique design, atmospheric pressure plasma systems by Diener electronic are suitable for use with robots and for integration in existing, automated production lines.

Materials cleaning

Plasma technology offers solutions for any type of contamination, for any substrate and any post-treatment. In the process, molecular contamination residues are decomposed as well.

LEARN MORE ABOUT CLEANING

Activation of materials

Good wettability is a prerequisite for the adhesion of binding partners in painting, gluing, printing or bonding.

LEARN MORE ABOUT ACTIVATION

 

Coating of materials

With low-pressure plasmas, components can be tempered with various coats. This is done by supplying gaseous and liquid starting substances into the vacuum chamber.

LEARN MORE ABOUT COATING

 

Atmospheric pressure plasma systems

Individually optimised for your process.

What is the design and functionality of atmospheric pressure plasma systems?

With atmospheric plasma technology, gas is excited by means of a high voltage at atmospheric pressure, such that a plasma is ignited. The plasma is expelled by compressed air from the nozzle. Two plasma effects are differentiated:

Activation and ultra-fine cleaning

is carried out by the reactive particles contained in the plasma jet.

Active gas jet accelerated by compressed air

which additionally removes loosely adherent particles from the surface.

By changing the process parameters such as treatment speed and distance to substrate surface, the treatment results can be influenced.

A comparison of atmospheric pressure plasma processes

Plasma Jet process

Atmospheric plasma – PlasmaBeam

The system consists of three units:

 

Supply unit

Electrical mains connection

Process gas and cooling gas connection

High voltage generator

Current measurement block

Gas control block

Front panel with operating elements

 

Gas and power supply lines in a flexible pipe

 

Plasma generator

The central electrode, the distal electrode and the insulator form the discharge zone 

 

The high voltage generator converts the mains voltage to high voltage (up to 10 kV) which is required for the generation of the electrical discharge.

The supply voltage and the process gas are supplied to the discharge zone via the flexible lines.

The air flow carries the active species (i+, e-, r*) created in the light arc out of the discharge zone (Plasma Jet process).

The specifically designed nozzle shape focusses the flow of the active gas onto the workpiece to be treated.

Gliding Arc process

Atmospheric plasma – Plasma APC

The system consists of three units:

 

Supply unit

Electrical mains connection

High voltage generator

Control block (control via micro-controller)

Front panel with operating elements

Air supply

 

 

Power and air supply lines in a flexible pipe

 

Plasma generator

Two electrodes form one discharge zone

 

The high voltage generator generates a voltage of up to 10 kV required for the generation of the electrical discharge.

The supply voltage is supplied via the flexible supply cable.

The air flow guides the electric arc from the electrode region. (Gliding Arc process)

The electric arc comes into direct contact with the surface.

Danger! High Voltage! Do not touch the electric arc or electrodes.

 

The PlasmaAPC 500 is used for non-conductive surfaces only.

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