Shrink sleeve applicators and heat tunnels are used both for applying a tamper evident band around the top of a container or a full or partial shrink sleeve with graphics used as a label. Tamper bands around the top of the container and cap are used not only for tamper evidence but also to conceal variations in fill heights of products that normally occur in glass bottles.

A shrink band system consists of both the applicator and a heat source. A heat tunnel is often necessary to achieve consistent appearance of the shrink.