For measuring the resistance against tearing of paper, board plastic films, foils and other similar materials. An initial cut is made in a set of test piece which are then torn through a given distance the work done in the test piece is measured as the loss in potential energy of a pendulum which is free to swing on it horizontal axis. A calibrated scale indicate the mean tearing force.

For measuring the resistance against tearing of paper, board plastic films, foils and other similar materials. An initial cut is made in a set of test piece which are then torn through a given distance the work done in the test piece is measured as the loss in potential energy of a pendulum which is free to swing on it horizontal axis. A calibrated scale indicate the mean tearing force.