All Low-Density Polyethylene (LDPE) films have very good tear resistance in both machine and cross directions and are difficult to tear without stretching and distorting the film.
In some applications it is necessary that the film be easily and quickly torn with minimum effort. An example of one application is in a medical facility where a plastic bag containing surgical instruments required scissors to open the bag which took more precious time during the procedure. The manufacturer of the bag created a small slit at the bag opening. The end user was able to tear the bag open with little effort using just fingers, for quick and easy access to the contents.
Blueridge Films has developed and manufactures Easy Tear cast plastic film for such similar applications. Samples are available.
Illustration of Easy Tear film (.004" LDPE processed on Cast line). Film tears easily in both directions.