Tear testing device TAPPI 414, APPITA P 400, ASTM D 689, NEN 1760 | 83-20

automaticfor films and thin products

Tear testing measures the force required to continue the tearing of an initial cut in sheet materials. Models and weights are available to test material with a variety of strengths. This is also useful to evaluate strength of perforated materials. Also known as the Elmendorf test, the tearing test has been performed in the paper industry for more than half century in order to measure the mean internal resistance of cellulose or papers to the propagation of a deliberately initiated tear. It enables rapid determination of the dynamic resistance of materials designed to be subjected to strong shearing loads (e.g. newspaper) or liable to be damaged by sharp or heavy objects (e.g. paper bags, seat belts, protective clothing). FEATURES - Automatic specimen notching - Mechanical-pneumatic clamping avoids sample slippage to ensure repeatable results - Automatic pendulum reset with lifting device - Tearing force displayed digitally - RS-232 data output - Small, table-top instrument - Maintaining a uniform quality level - Safety Hood protects operator from injury while pendulum is in motion.