* Bend Test
The DIN EN ISO 1519 standard only permits the use of cylindrical mandrels.
The ASTM D 522 and the DIN EN ISO 6860 standards describe the test method by means of a conical or cylindrical mandrel.
The use of a conical mandrel bending tester enables testing of a large variety of bending radii at the same time.
* Flexibility / Elasticity
In practice, three different empirical test procedures are used to assess the resistance of coatings and allied products to cracking and/or detachment from the substrate under different conditions of deformation.
* Impact Test – “Falling-weight Test”
■ Impact Tester
- Graduations are marked along the slot to facilitate readings Procedure
- Place sample under the punch
- Lift the weight to desired height on guide tube and let it drop
- View the damage of the sample visually or with low powered magnification
- Consists of a solid base with a guide tube support
- The guide tube has a slot to direct a weight that slides inside the guide tube
- A collar fits on the tube that helps the user slide the weight up to the accurate height
- Adjust the height and weight of the impacter to determine exact point of failure or establish pass/fail specifications
* Cupping Test
In addition to determining the deformability or elongation of a film, the cupping test method supplies information on adhesion properties. Single-layer systems can be tested as well as multiplelayer systems.