Adhesion-promotion technologies are used in the plastics industry for a wide variety of products, from automotive components to packaging. One method for modifying the surface of polymer products to promote adhesion of coatings and adhesives is flame plasma. This webinar describes the theory behind various flame-plasma surface treatments to promote adhesion of water-based inks, coatings, adhesives, labels, and other substrate laminates to polyolefin-based substrates. Critical parameters in flame treatment are flame chemistry, flame geometry, plasma output, and distance of the burner to the part. The interrelationship between these variables, and how to control them for optimum surface treatment, will be discussed.