ISO 8067 Flexible Cellular Polymeric Materials Tear Strength

The international ISO 8067 standard establishes a method for determining the tear strength of a pre-damaged soft foam specimen using a tensile test.

This method is used to investigate the tear strength of flexible cellular polymeric materials that have a specified thickness. This test is for the determination of peak force and the tear strength characteristics of the product for a given rate of displacement.

In principle, the test specimen is clamped in the jaws of the testing machine, making sure that the test specimen is properly gripped. A force is applied at a constant rate of displacement - tearing the specimen until fracture. ISO 8067 allows for two types of specimens: Method A uses a trouser tear specimen, while Method B uses an angled test piece.