Openair-Plasma® makes it a reality: long-term adhesion with new warm melt adhesives

The Openair-Plasma® process makes it possible for the first time to achieve reliable results when using newly developed one-component warm-melt polyurethane (PUR) adhesives on non-polar plastics, such as polypropylene. Pretreatment with Openair-Plasma® generates the required high surface tension on the materials to be bonded.

The technique for combining Openair-Plasma® with warm melt adhesives was successfully developed in collaboration with adhesives manufacturer Sika.

The advantages of warm melt adhesives:

  • High green strength
  • Fast inline leakage testing
  • Increases productivity (>15%)

HELLA Australia Pty Ltd.

Quality assurance with Openair-Plasma®

In 1995, Openair-Plasma® technology was used for the first time in standard production of automobile headlamp housings in Germany. Today, it has become an established part of applications around the world. At HELLA, Australia, the high process safety of the plasma process is especially valued.

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