An Indonesian food packaging company recently visited our facility to source CIJ ink specifically for PE food packaging bags. Their requirements were clear: the printed codes on the film must be sharp, durable through high-temperature sterilization, and resistant to abrasion during storage and transport.

Our team recommended a food-grade CIJ ink and arranged an on-site demonstration. A production date and batch code were quickly printed onto a PE bag—crisp, clean, and completely free of satellite drops. The sample was then placed in a high-pressure steam sterilizer and put through a full 121°C retort cycle. When the bag was removed, the code remained dark, bold, and sharp, with no peeling or bleeding.

Immediately afterward, the customer performed a finger-rubbing test, followed by wiping with dry and wet cloths alternately. The code stayed fully legible, and the adhesion was completely unaffected.

The customer confirmed on the spot that the ink met all their requirements and placed a trial order. This satellite-free, retort-resistant, and abrasion-proof CIJ ink once again proved our technical strength in food packaging coding.