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Plasma activation

Plasma activation

Efficient surface activation and modification

If surfaces have to be varnished, printed or glued, they require good wettability of the surface for good adhesion. Many surfaces show insufficient wettability even in a clean state, which is intensified by impurities. As a result, liquids like adhesives and inks roll off. This is because the surface tension is very low and insufficient for further processing. If unprocessed material is processed, the result is often that paint and varnish do not adhere properly and quickly come loose again or that bonded parts fall apart. This can be prevented with plasma activation.

Plasma activation of a surface increases its surface energy and creates molecular anchor groups that correlate with those of the liquid. This manifests itself through improved wetting and leads to an optimized adhesion of suitable liquids.

Plasmaactivation for creating molecule layers on the surface

 

 

Practical example: Plasma activation of polyphenylene sulfide

In the example, two polyphenylene sulfide components were treated with atmospheric pressure plasma from the plasmabrush PB3 system.

PPS components without plasma actication cannot be wetted with a test ink of 40 mN/m.

Untreated PPS components cannot be wetted with a test ink of 40 mN/m.

After plasma activation, the component is completely wetted with a test ink of 60 mN/m.

After plasma treatment, the component is completely wetted with a test ink of 60 mN/m.

Suitable materials

The following materials can be activated:

  • Metals
  • Synthetic materials
  • Glass, ceramics, natural stone
  • Natural leather, imitation leather
  • Natural fiber, wood, paper

Advantages of plasma activation

  • High process speed and reliability
  • No running costs
  • Environmentally friendly treatment without additional chemicals
  • Easy inline integration and automation

Articles on the subject

Read more about plasma activation in the following articles:
Oberflächenaktivierung von niederenergetischen Oberflächen

Surface activation of low energy surfaces

With low-energy surfaces such as silicone, polypropylene or Teflon, a strong increase in surface energy is achieved after surface activation with the piezobrush PZ2 handheld plasma device.

Logo Cleanroom Technology

Plasma technology: A versatile cleaning tool

Surface activation, surface treatment and precision cleaning are processes now possible with plasma-based tools. Corinna Little of relyon plasma describes the applications and the potential of this modern technology

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Plasmabehandlung vor dem Bedrucken von Glas führt zu einer deutlichen Haftungsverbesserung / Pre-treatment for glas printing

Pre-treatment for glas printing

How can you prepare glass for digital printing to create a durable product? We provide a brief overview of pre-treatment for glas printing.

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Plasmatool – Plasma-Handgerät

New product! Our new high performance plasma handheld

Plasmatool, the high-efficient plasma handheld device for surface treatment. The perfect tool for flexible and easy surface treatment in industrial environments.

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Bonding

Bonding of plastics

Plastics are usually characterized by inert surfaces with surface energies between 20 and 40 mN/m. In order to wet a surface, however, the surface energy of the polymer must exceed the one of the paint or the adhesive. This condition can be achieved through a plasma treatment of the surface and is called “activation“ in plasma technology.

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