Test inks for surface tension measurement.
What is the the surface tension of this film?
Test inks by SOFTAL let you measure the surface energy of test inks quickly and repeatably in accordance with DIN ISO 8296.
To perform the test, lines of different inks are applied to the film in question and their behaviour observed. By observing the individual behaviour of different test inks, the test ink with the ideal ink behaviour is identified. The surface tension of the test ink with the ideal ink behaviour is then identical to the surface energy of the film.
This knowledge allows for quality assurance and process optimization, for example by making the difference before and after a corona treatment step visible.
The test inks are available with following values:
34, 36, 38, 40, 42, 44, 46, 48, 52, 54 and 30, 31, 32, 33, 35, 37, 39, 41, 43, 45, 47, 50, 56, 58, 60, 62, 64, 66, 68, 70, 72 mN/m (dyn/cm).