When packagers are faced with label adhesion challenges flame and plasma surface treaters are often used to increase bond strength. Label adhesion problems occur because many of the container, lid and cap materials used in packaging are chemically inert and non receptive to bonding with glue.
Options for improving labeling success include changing the adhesive, changing the label application technique, changing the container material or reducing line speeds. Some of these options can be very difficult to change so packagers frequently turn to in-line surface treatment solutions.
Surface treating caps, bottles and lids ensure that labels will not peel off before complete destruction of the label occurs. Air plasma treaters and flame treaters activate surfaces to create bonding sites to enable successful adhesion.
Both air plasma and flame surface treaters can be integrated into a packaging line with minimal line modification. Flame treaters are ideal when the area to be treated is large and lines speeds are high. For spot area treatment areas Enercon’s air plasma systems can be mounted over a conveyor or in conjunction with a bottle table depending on the line layout.