Adhesive tape is characterised by two fundamental properties: adhesion and cohesion.
From a molecular point of view, they are attractive-type forces that act between the molecules of the fluid and that of a surface in contact with it, causing it to adhere to it.
Adhesion is the ability of an adhesive to stick to a given substrate and, at the same time, cohesion is also an attractive-type force, but one that acts between the molecules of the material to keep them as close together as possible and thus cohesive.
Cohesion is a particularly important property in all those applications where the absence of adhesive residue once the tape is removed is often required. It is as essential for room temperature applications as it is for high/low temperature applications.
Secad has had a 10-position Shear for measuring the cohesion of a tape at room temperature since 2018. Following the modernisation of the laboratory, Secad has also equipped itself with a SAFT (Shear Adhesion Failure Tester), and can now perform up to 8 tests simultaneously at controlled temperature.
In particular, both resistance at a given temperature can be tested, as well as periodic cycles at time/temperature intervals, allowing us to better determine the working range for our customers during product development.
Especially for those who apply the tapes outdoors, this will be a guarantee and a reason for peace of mind.