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The Benefits of Preparing Surfaces with Plasma for Adhesive Bonding

Posted on 6/15/2020 8:21:51 AM By ASC
  

When it comes to bonding and laminating, the surface tension and wettability play a big role in the process and its effectiveness, particularly when substrates are hard to bond because of low surface energy, which is the case with plastics like polypropylene, polyethylene and other polyolefins. Materials that are difficult to move or those that are lightweight but very large, such as CFRP structures in the aviation and automotive industries, can also cause problems.

This is where plasma technology steps in to assist. It will clear the surfaces of fine impurities and chemically modify the materials in order to optimize them for adhesive bonding and laminating. To achieve this, an atmospheric pressure plasma device powered by an integrated air compressor is used.

The treatment opens the way to including materials with plasma-improved mechanical properties as inserts in the laminates, and to processing bonds that were unprocessable before because of their low surface energy.



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