assays using a constant crosshead speed of 200 mm/min and a gap
between grips of 25 mm. Test samples were prepared by thermo-
sealing two specimens of 25.4 mm wide obtaining a fin sealed
specimens, according to ASTM F88-00 standard method. For each
film formulation ten probes were used. Assays were performed
after thermo-seals were cooled down and became stable. Me-
chanical profiles were registered and seal failure modes were
determined according to ASTM F88-00 standard method. Thermo-
sealing maximum tensile resistance was calculated for break,
elongation, or adhesive-elongation failures. In the case of adhesive,
cohesive, or delamination failures, average thermo-sealing resis-
tance was determined considering only the 80% middle part of
stress-strain curves. The involved energy, in the case of adhesive
failures, was calculated as the area under the curve.