The tensile index (TI, Nm/g), elongation at break (&Fmax, %) and tensile energy absorption (TEA, J/m²) were registered for all coating types in machine direction. As Figure 6 illustrates, CCh film coatings led to a slight increase in TI (3% higher than the reference), while none of the other coating types produced changes beyond the standard deviation of measured values. This is consistent with the results obtained by Bordenave et al.,28 Kjellegren et al.29 and Reis et al.,25 who reported little or no influence of chitosan based coatings on the tensile strength of paper substrates.