DIN EN 12703:2012-06

This European Standard specifies a method to determine whether a film of adhesive of given dimensions will craze, crack or fracture at a specified temperature. Alternatively, the temperature at which the film will craze, crack or fracture can be determined. The method described can be used either as a quality control test or to compare the flexibility of adhesives at low temperatures. An unsupported film of the adhesive, after conditioning, is bent through 180° over specified diameter cylindrical mandrel. The test piece is then examined for signs of fracture, crazing or cracking. The test may be carried out either as a pass/fail test or at successively lower temperatures until a failure occurs. At present a DIN committee does not exist for this standard since the parties concerned have not shown any interest in work on the subject.