4 Requirements 4.1 Appearance 4.1.1 Film rolls should be rolled neatly, with consistent elasticity, without joints, running edges, wrinkles, scratches, cut edges, oil stains and any defects that affect applicability. 4.1.2 Surface defects Surface defects shall comply with the requirements in Table 1. 4.2 Dimensions and deviations 4.2.1 Thickness deviation The nominal thickness range of the product is generally 15 μm ~ 23 μm, and the thickness deviation should meet the requirements of Table 2. 4.2.2 Width and length deviations shall comply with the requirements of Table 3. 4.3 Physical properties should comply with the requirements of Table 4.
T/CPPIA 34-2024 history
2024T/CPPIA 34-2024 Polyester base film for photoresist dry film