Table 2.
GTR of selected polymeric films combined film laminates at various temperatures and RH conditions
| Films | Thickness (μ) | Gas transmission rates (cm3 (m2.h. ΔC)−1) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 10 °C, 90 % RH | 15 °C, 80 % RH | 20 °C, 75 % RH | 25 °C, 70 % RH | ||||||
| OTR | CTR | OTR | CTR | OTR | CTR | OTR | CTR | ||
| BOPP-I | 30 | 43.15 | 190.72 | 61.72 | 278.13 | 88.59 | 408.62 | 125.86 | 596.57 |
| BOPP-II | 45 | 25.76 | 87.19 | 38.54 | 171.42 | 57.93 | 263.57 | 79.13 | 368.72 |
| PVC-I | 25 | 650.91 | 3968.81 | 943.37 | 5830.16 | 1320.84 | 8263.27 | 1894.30 | 11992.64 |
| PVC-II | 35 | 417.59 | 2527.64 | 614.38 | 3784.81 | 846.17 | 5264.08 | 1289.38 | 8148.89 |
| PVC-III | 50 | 290.26 | 1712.58 | 431.29 | 2609.83 | 585.52 | 3579.78 | 896.45 | 5566.95 |
| LDPE-I | 40 | 164.73 | 912.35 | 241.49 | 1367.14 | 337.46 | 1943.73 | 502.74 | 2930.94 |
| LDPE-II | 60 | 109.82 | 589.37 | 156.73 | 863.25 | 226.70 | 1273.25 | 329.70 | 1886.86 |
| PVDC-I | 40 | 0.34 | 1.20 | 0.51 | 1.84 | 0.68 | 2.53 | 0.94 | 3.61 |
| BOPP-I + PVC-III | 80 | 92.22 | 428.967 | 132.89 | 629.79 | 188.53 | 915.48 | 271.98 | 1349.77 |
| BOPP-II + PVC-II | 80 | 43.69 | 150.95 | 65.33 | 294.37 | 97.78 | 451.01 | 134.26 | 633.21 |
| BOPP-II + PVC-I | 70 | 39.20 | 133.99 | 58.62 | 262.36 | 87.96 | 402.85 | 120.29 | 563.93 |
| LDPE-I + PVC-I | 65 | 231.12 | 1296.32 | 338.29 | 1937.62 | 472.86 | 2753.72 | 700.72 | 4131.67 |
| BOPP-I + PVC-I | 55 | 74.96 | 336.19 | 107.30 | 490.39 | 153.81 | 719.48 | 218.63 | 1050.17 |
| BOPP-I + LDPE-II | 90 | 72.48 | 347.35 | 103.58 | 507.40 | 149.18 | 746.62 | 214.11 | 1096.40 |
| BOPP-II + LDPE-I | 85 | 42.72 | 151.79 | 63.75 | 291.32 | 94.93 | 444.30 | 131.12 | 626.42 |
| PVC-II + LDPE-II | 95 | 150.75 | 821.44 | 216.01 | 1206.31 | 310.43 | 1766.68 | 454.26 | 2632.02 |
| PVC-III + LDPE-I | 90 | 216.82 | 1232.22 | 319.63 | 1858.87 | 440.70 | 2605.19 | 664.99 | 3977.18 |