Tensile properties were assessed with the use of an Instron 3366 machine with a 500N load cell. Measurements were made with a testing speed of 100 mm/min. The tests were carried out at a temperature of 22 °C with 50% of humidity. The hardness Shore D was determined according to the PN-ISO 868 standard using 4 mm thick samples. Finally, the oxygen transmission rate was tested using the Mocon OX-TRAN 2/20 device, based on the ASTM F 1927-14 standard, at a temperature of 22.5°C and a humidity of 0%. Before starting the measurement of the oxygen transmission rate, samples were prepared in the form of very thin, homogeneous films using the "Remi-plast" hydraulic hot press with the 6-ton pressure. Each sample was pressed twice to obtain the most homogeneous bubble-free material possible. Materials in the form of films with a thickness from 67 μm to 83 μm were obtained.