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In this paper, we investigate the periodic peeling behavior of opposingsymmetric peeling fronts involving an elastic tape peeled off from a deformablesubstrate of finite thickness, backed onto a rigid foundation. We treat theproblem by means of an energetic formulation, and we found that, depending onthe values of the initial detached length $l$, substrate thickness $h$, andpeeling periodicity $\lambda$, the translational invariance of the peelingprocess is lost and restored, as the elastic interaction between the peelingfronts is limited by the substrate thickness. Indeed, given $h$ and $\lambda$,a critical value of the detached length can be found, which is able to preventunstable peeling of the tape under a fixed applied load, thus resulting inenhanced adhesion strength, with respect to the classical Kendall's solutionfor peeling from a rigid substrate. On the other hand, given the geometricalsystem configuration (i.e. the detached length $l$) the load necessary totrigger the peeling can be minimized by conveniently tuning the ratio$h/\lambda$. This feature might be of interest for the development ofinnovative designs for future biomedical devices, such as Transdermal DrugDelivery Systems or wound dressing, requiring low peel adhesion for safesuccessive removals.

Tuning the periodic V-peeling behavior of elastic tapes applied to thin compliant substrates