Table 1.
Properties of the selected polymeric films
| Film properties | Units | Procedure | Types of films with code | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| BOPP-I (PFR-1) | BOPP-II (PFR-2) | PVC-I (PFR-3) | PVC-II (PFR-4) | PVC-III (PFR-5) | LDPE-I (PFR-6) | LDPE-II (PFR-7) | PVDC-I (PFR-8) | |||
| Thickness | μ | ASTM D37 | 30 | 45 | 25 | 35 | 50 | 40 | 60 | 40 |
| Tensile strength at yield | Mpa | MD/TD | 14.0/16.0 | 14.3/16.4 | 52.0/58.0 | 60.0/66.0 | 70.0/75.0 | 9.2/9.9 | 9.7/10.5 | 81.0/76.5 |
| Tensile at break | Mpa | MD/TD | 14.5/16.1 | 14.9/16.3 | 52.0/53.0 | 57.0/62.5 | 61.0/68.0 | 18.5/20.1 | 19.4/20.9 | 66.5/62.0 |
| Elongation at yield | % | MD/TD | 4.5/2.7 | 4.7/3.0 | 2.2/2.0 | 3.0/2.9 | 4.5/3.8 | 7.5/5.4 | 8.0/5.7 | 8.5/6.7 |
| Elongation at break | % | MD/TD | 160/400 | 177/428 | 307/486 | 346/532 | 389/571 | 593/817 | 645/835 | 721/680 |
| Tear strength | Gms/microns | MD/TD | 0.77/3.53 | 0.81/3.79 | 0.47/0.60 | 0.83/0.97 | 1.42/1.53 | 1.93/18.6 | 2.56/19.75 | 2.4/3.1 |
| Haze | % | ASTM D1003 | 1.28 | 1.35 | 1.38 | 1.62 | 1.84 | 23.57 | 28.10 | 13.65 |
| Dart impact | Gms/microns | ASTM D2457 | 0.7 | 0.78 | 0.76 | 0.85 | 0.96 | 2.6 | 2.9 | 1.8 |
| Seal temperature at 2 kg/cm2 | °C | ASTM F88 | 170–200 | 180–200 | 125–180 | 130–180 | 137–180 | 142–180 | 150–190 | 140–190 |
| WVTR at 38 °C and 90 % RH | g/m2.day | ASTM E96 | 5.2 | 4.91 | 34.8 | 29.0 | 22.6 | 11.67 | 9.54 | 4.79 |
MD Machine direction, TD Transverse direction