Thicknesses: 2 / 3 / 4
Much of today’s packaging is being designed with ease of opening in mind. National’s Zipper Rule is designed to maintain package integrity through the distribution channel, yet provide a package that opens without need of knives or other tools. Available in both serrated style for rotary dies and standard for flat dies, zipper rules can be ordered in a variety of styles depending on the desired tear strength. Like all National products, Zipper rules come in “left hand” or “right hand” and can be customized to meet your specifications.