Packaging Knowledge

Freezing food packaging and ambient temperature food packaging both appear as flexible packaging bags, but their selection logic is completely different. We often encounter customers using the structure of an ambient snack bag for frozen dumplings. The sample works fine at room temperature, but after one month in a cold storage warehouse, the sealing edges crack, the bag becomes brittle, and leakage occurs after thawing. The problem is not with the printing; it lies in the fact that material, structure,…

Many customers often ask the same question when they first receive a packaging solution: how many layers does a composite pouch have, and why can't a single layer of plastic film suffice? The answer lies in the product's requirements for barrier properties, strength, heat resistance, and print quality. A single layer of film is difficult to meet all these conditions simultaneously. Therefore, factories combine two to five layers of complementary materials using adhesive or resin to create a composite film…

Common packaging design errors are often not detected during design reviews but instead surface during plate making, printing, or after shelving, leading to rework, delays, and waste. This article, from the perspective of a flexible packaging factory, outlines ten common design issues, explaining why they occur, at which stage they fail, and what brand owners and designers can check before finalizing file delivery. Why packaging design errors often surface during mass production The visual effects created in design software cannot…