Product Details Item 0.38mm 0.76mm Appearance requirements AppearanceAchromic or yellowish transparent film with leveled surface without scratch or fold 1.2 A-shaped impurities and blister 0.5mm 1.5mm Not more than 8 ones for each rollNot more than 5 ones for each roll Mark them, and add 1m at each place. 2. Geometrical size 2.1Thickness (mm) 0.38±0.015 0.76±0.02 2.2EvennessThe transverse thickness deviation within the distance of 25mm ~ E does not exceed 15 um; The transverse thickness deviation within a distance of 50mm ~ E does not exceed 20 um 2.3Length tolerance(m) Not less than the labeled length 2.4Width tolerance(mm) 0-20 3.Moisture content(%) 0.35-0.55 4.Tensile strength(MPa) 20 5. Elongation at break(%) 200 6.Haze ratio(%) 0.6 7.Shrinking percentage(60~C/1 5min)(%) 8