Glossary

The ability of a packaging material to continue to easily tear once the tear has been initiated. Some plastics, such as polyethylene, have no tendency to continue to propagate an initiated tear.

The resistance of a material to tearing.

The amount of strength required to break a 1" wide strip of film (Results are in gram force/sq inch).

Another term for Reverse Printing (see Reverse Printing). Trap printing derives its name from the fact that the ink is trapped between the outer layer of material and the substrate.