<p>This research paper focuses on identifying material model parameters for the EVA interlayer which serves as a binding element in laminated glass structures. EVA is a product that contains certain perturbations in its chemical composition due to production processes or manufacturing recipes. Here, we test whether a certain range of chemical composition can be observed through the general material model of the EVA interlayer. To test this assumption, uniaxial tensile tests were conducted, at a fixed room temperature and constant strain rate, on crosslinked specimens of two EVA types with varying vinyl acetate content. Based on experimental results a mathematical formulation for a material model is established in the frame of a modified Mooney–Rivlin hyperelastic model. The function for fitting all samples is derived from the equation for strain energy density W according to invariants for the uniaxial test. Nine parameters were defined for each group, and the model was verified through numerical simulations in Ansys software. The confirmation of the defined material model is done by comparing the numerical results with the experimental results. Regarding different groups of EVA interlayer, it is proven that for a value of strain up to 170%, the material models for both groups of EVA interlayer can be defined as a unique model, due to a very small difference in results (both numerical and experimental). But for higher strains, the behaviour is different and in this case, it is necessary to be familiar with the vinyl acetate content of the used EVA interlayer so that a proper material model can be used.</p>