Tear edge rule is used to produce the “zipper opening” in ice cream, tissue, foil and plastic bag carton to name a few. The true advantage of Helmold’s tear edge rule is that it can be bent from the bevel edge to the base, making it the strongest tear edge available.
Other manufacturers don’t make their rule this way.
This special design prevents the teeth from snapping off and causing the zipper on the carton to fail.
When ordering your die, insist on the rule that will give your costumers the best product; specify Helmold tear edge rule.