| 2.2Evenness | The transverse thickness deviation within distance of 25mm ~
E does not exceed 15 um; The transverse thickness deviation within distance of 50mm ~ E does not exceed 20 um | |
| 2.3Length tolerance(m) | Not less than labeled length | |
| 2.4Width tolerance(mm) | 0—20 | |
| 3.Moisture content(%) | 0.35一0.55 | |
| 4.Tensile strength(MPa) | ≥20 | |
| 5.Elongation at break(%) | ≥200 | |
| 6.Haze ratio(%) | ≤0.6 | |
| 7.Shrinking percentage(60~C/1 5min)(%) | ≤8 | |