Headlights are constructed basically from a casing, a reflector and plastic end cap. The demands of up-to-date and multifaceted designs often mean that space for glue joints is greatly restricted. The space remaining requires a secure bond that is impenetrable to water vapor.
With Openair® Plasma it is possible to combine a variety of plastic materials, such as polypropylene and polycarbonate. Plasma activation results in precisely targeted increase in surface tension along with micro-cleaning of area where the glue is to be applied. All common types of adhesives are suitable for the subsequent bonding operations, such as silicone, polyurethane rubber and especially single-component warm melt adhesives with high initial strength.
The ease of integrating Openair® plasma technology in inline processes results in highly efficient process designs as well.