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Item | VMPE film (Agricultural grade), 20 microns | |||
No. | Properties | Unit | Test value | Test Method |
1 | Film thickness tolerance | % | 20±0.2 | ASTM D-374 |
2 | Tensile strength MD | N/mm2 | 52 | ASTM D-882 |
Tensile strength TD | 45 | ASTM D-882 | ||
3 | Tear Strength MD | Kn/m | 198 | ASTM D-882 |
Tear Strength TD | 220 | ASTM D-882 | ||
4 | Elongation at break MD | % | 589 | ASTM D-882 |
Elongation at break TD | 610 | ASTM D-882 | ||
5 | Water vapour transmission (38ºC,90%RH) | G/m2.24h | 0.8 | ASTM E96 |
6 | Oxygen (23ºC,0%RH) | cm3/m2·1atm·24hr | 68 | ASTM D1434 |
7 | Surface tension | mN /m | 32 | ASTM D-2578 |
8 | Adhesiveness of aluminum(calculated by Fall off area/Total Area) | % | 10 | ASTM D-3359 |
9 | Thickness of aluminum layer | (Square resistance)/ | 2.1 | GB/T 15717 |
(Optical density) O.D | 2.15 | X·Rite361 | ||
10 | Uniformity of aluminum | % | 7 | ------- |
11 | Coefficient of Friction | ------- | 0.55 | ASTM D-1894 |
12 | Density | G/cm2 | 0.93 | ASTM D-729 |
13 | Sealing strength | G/24mm | 880 | ASTM F88-06 |
14 | Reflective | % | 83.3 | GBT 7240-1987 |