T/CPPIA 40-2024 Online coating of polyester release film

Scope

Scope: This document specifies the terms and definitions, product classification, requirements, test methods, inspection rules, marking, packaging, transportation, and storage of online coated polyester release films (hereinafter referred to as release films). This document applies to the production, inspection, and sales of release films made from polyethylene terephthalate as the raw material and coated with aqueous silicone resin by two-way stretching online; Main technical contents: 5.1 Appearance quality: The film rolls should be neatly wound, with a smooth appearance, consistent tension, no obvious longitudinal stripes, no obvious star-shaped folds at the ends, and uneven ends ≤ 3mm. The number of joints in the same film roll should not exceed 1, and the length of the joints should be not less than 1000 meters. 5.2 Apparent quality: The film rolls should not have defects such as dead folds, bulging folds, mechanical damage, oil stains, holes, burnt materials, impurities, and scratches. 6.1 Length and width deviations: The length deviation is ±1%, and the width deviation is ±2mm. 6.2 Thickness and thickness deviations: The thickness and deviations should comply with the requirements specified in Table 2. 7. Physical properties: The physical properties include mechanical properties, heat shrinkage properties, optical properties, and release properties. The mechanical properties, heat shrinkage properties, and optical properties should comply with the requirements specified in Table 3.

Development Information

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