T/CPPIA 31-2024 Blue optical polyester film

Scope

Scope: This document specifies the terms and definitions, product classification, requirements, test methods, inspection rules, marking, packaging, transportation, and storage for blue optical polyester films (hereinafter referred to as polyester films). Applicable to the production, inspection, and sales of blue optical polyester films made from polyethylene terephthalate (PET) as the (main) raw material, with the addition of an appropriate amount of blue masterbatch granules, and manufactured by melt extrusion and biaxial stretching. Applicable to release base films and protective base films in the field of electronic products. The polyester films specified in this document are not suitable for food packaging films. Main technical contents: 5 Requirements 5.1 Appearance quality 5.1.1 The film roll shall have no joints, with edge deviations ≤ 2mm, consistent tension, and no radial indentations or broken edges at the paper tube ends. The cut edges shall be free from burrs. 5.1.2 The surface shall have no obvious cracks, scratches, folds, looseness, wrinkles, blemishes, bubbles, impurities, oil stains, or any defects that affect its applicability. 5.1.3 The appearance quality requirements shall comply with Table 1 and Table 2. 5.2 Specifications and dimensional deviations 5.2.1 Length and width deviations The length and width deviations shall comply with the requirements specified in Table 3. 5.2.2 Thickness deviations The thickness deviations shall comply with the requirements specified in Table 4. 5.3 Performance indicators The performance indicator requirements shall comply with the provisions of Table 5. If the user has other requirements, the specifications shall be determined through consultation between the supplier and the user.

Development Information

Related Standards