项目 | 0.38mm | 0.76mm |
---|---|---|
外观要求 | 无色或微黄透明薄膜,表面平整,不存在划痕,折痕 | |
点状杂物及气泡 | 作出标记每处加放1米 | |
≤0.5mm | 每卷不超过8处 | |
>0.5mm | 每卷不超过5处 | |
厚度( mm) | 0.38mm±0.02mm | 0.76mm±0.02mm |
密度(g/cm³) | 1.07g/cm³ | |
拉伸强度(MPa) | ≥20MPa | |
断裂伸长度(%) | ≥200% | |
均匀度 | 25mm内横向厚度偏差≤15μm.50mm内横向厚度偏差≤20μm | |
湿度(%) | 0.25-0.55 | |
雾度(%) | <0.6 | |
透光率(%) | >86% | |
收缩率(60°c/15min)(%) | ≤8 |
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