Table 2: Results of the optical measurement of the oxygen barrier.

TrialOTR whey coating 100 whey coating
(cm³ (STP) m−2 d−1 bar−1)(cm³ (STP) m−2 d−1 bar−1)(cm³ (STP) m−2 d−1 bar−1)

PET 101
PET/whey coating/PE3.13.20.4