*2.4. Preparation of Tissue Structures*

The tissue structures were produced in a batch laboratory sheet former according to the method described by Morais et al. [6,7]. An adaptation to ISO 5269-1 was used, namely, the suppression of the pressing operation and the production of structures with a basis weight of 20 g/m<sup>2</sup> . The tissue structures were prepared with the different formulations described in Table 1. Finally, all samples were conditioned at 23 ± 1 ◦C, with a relative humidity of 50 ± 2%, according to ISO 187.
