The product tears and breaks due to external force during storage and transportation. Sufficient tear resistance can reduce tearing and prevent leakage.
SLD-01 Tear Tester: complies with the Elmendorf method and is suitable for tear strength testing of films, laminated films, foils, paper and cardboard.
The tearing tester determinates the average force to propagate tearing
through a specified length of plastic film or nonrigid sheeting after the tear
has been started. It helps to rank relative tearing resistance of various
plastic films and thin sheeting of comparable thickness.
Standards: ASTM D1922, ASTM D1424, ASTM D689, ISO 6383, ISO 1974
Principle:
Acting by gravity, the pendulum swings through
an arc, tearing the specimen from a precut slit. This loss in
energy indicates the force required to tear the specimen.