ABREX®-ABRASION, is a soft-chemo-mechanical fingertip & hand abrasion. The simulated wear pattern matches reality with 99% accuracy. It is a highly complex abrasion process which involves:

 • A 45° angle impact driven by a dynamic pneumatic cylinder attached with a viscoelastic fingertip under a defined load;

 • Then a friction rubbing or tumbling motion between the sample and a textile containing dirt, dandruff, oil, sweat or various types of testing liquids;

 • Followed by a retraction movement with or without the contact at the surface depending on the application.

• Visible defects

Scratches can be easily made under the dynamic motion of human beings. Fingerprint or dirt print affinity is another issue; either easily removed by a few cleaning steps or certain anti-fingerprint coatings are applied to prevent those imprints.

• Non-visible defects

Abrasion is often caused by human finger touch/ swipe/ zoom actions and other mechanical loads. Under this abrasion, the layers of functional coatings can suffer invisible damages and these micro defects, will result in a malfunction of the display. The natural behavior of a customer who identifies a problem with the functioning of a touchscreen is to return the entire product, causing an undesirable cost to the producer.