Case Study: Bend Testing of Inlays with Tagsurance

This study presents the results of a bending test for inlays with different adhesives. The target of the performed study was to verify the superiority of adhesives with optimized bending properties. The tests were done by DELO Industrial Adhesives.

In the test setup, the Voyantic Tagsurance was used to measure the threshold power curve from 800MHz to 1000MHz using communication testing. The Voyantic Snoop Pro near field coupling element was used to enable the measuring of inlays during the test process. It was mounted in the bend testing device at the DELO laboratory. The device runs a loop of inlays through several rollers bending them repeatedly throughout the test.

The table below shows the meters ran in the bending test as the survival rate reaches 65%, 50% and 30%. The outstanding performance of the adhesives optimized for bending was proven. During the 2000m of bending, none of these samples experienced a single failure.

Survival of different adhesives through 2000m

The graphs below illustrate how the degradation affects the tag response curve. Each graph shows the response curve for one sample inlay from a sample set with different adhesive. The samples are chosen to represent the ones failing at the time of 50% survival rate of the population.

Bending optimized adhesives with no degradation

Effect of degradation on the tag response