Plasma Treatment for Food Packaging Cartons

Food packaging products have extremely strict industrial standards for safety, environmental protection, and non-residual performance. Most food gift boxes, snack cartons, and food outer packaging adopt lamination, UV varnish, and coated paper technology to improve waterproof and appearance performance. However, these low-surface-energy materials easily cause insufficient glue infiltration, resulting in degumming, box opening, and edge warping during storage, transportation, and cold and hot temperature alternation.

Different from chemical treatment agents that easily produce residual pollutants and peculiar smells, Keqi plasma surface treatment adopts pure physical dry activation technology. It does not use any solvent, primer, or chemical additives, producing no odor, no toxic residue, and no damage to food-grade printing ink and food safety coating layers. The whole processing process fully complies with international food packaging safety standards.

The low-temperature plasma beam accurately activates the local bonding area of the carton without scratching or discoloring the packaging surface. It effectively improves the wettability and surface tension of laminated and UV-coated cartons, enabling cold glue, hot melt adhesive, and food-grade easy-tear tape to form uniform, firm, and lasting bonding lines. The equipment adapts to high-speed continuous operation of food packaging production lines without affecting production efficiency.

After plasma pretreatment, food cartons maintain stable bonding performance in high-temperature, low-temperature, and humid environments, effectively reducing defective rates and customer returns. It helps food packaging factories achieve environmentally friendly, safe, and standardized automated production and meet strict export food packaging inspection requirements.