An Exclusive Assessment Of Surface Dyne Testing In Manufacturing Environments Where Materials Are Tested Before Adhesion Processes As Well As Validating Material Surfaces After Surface Treatment Processes Like Corona And Plasma Treatment Where Both The Surface Tension And Surface Free Energy Plays A Key Role

Abstract

This is all about dynes. The dyne level of a material is called its surface energy. If the liquid has a dyne level lower than the material's surface energy, then the liquid will spread out over its entire surface in a uniform wet layer. If the ink's dyne level is equal to or higher than a material's dyne level, the liquid will become cohesive and tend to remain in droplets. So, dyne level refers to the measurement of surface energy of a material or substrate and can be a good indicator of our chances for successful adhesion. Different chemistries of adhesives are required for bonding substrates depending on their dyne level which is evident when applying a coating to a paper based product versus plastic or glass. Coatings on some materials might adhere quickly or beadup like water on glass if not compatible. Typically, lower dyne levels of 30 or less indicate that a liquid adhesive would bead-up on the surface, compared to higher dyne levels of 38 or more which indicate reasonable bonding properties. While this is one indicator of successful bonding compatibility, it does not guarantee reliable surface adhesion. But there are different means to improve adhesion based on surface preparation, improved adhesives or a combination of both.

Keywords: Surface Tension, Surface Free Energy, Wettability, Corona Treatment, Plasma treatment, Contact Angle, Adhesion