Enhancing the Corrosion Resistance of packola: Special Materials and Coating Applications

Low‑migration flexo plus epoxy‑phenolic topcoat on e‑commerce cartons cut ΔE2000 from 3.2 to 1.2 and raised ASTM B117 salt‑spray endurance 24→120 h in 10 weeks (N=184 lots), reducing false rejects 0.9%→0.3% @185–190 °C / 0.9 s / 120 m/min; controls aligned to G7 Colorspace (cert# CS‑2024‑1198) and EU 2023/2006 §5.