Whether the products could be in circulation on the market, not only its function, but also the quality which is the most important point. For example the cars from Germany, is popular all over the world, beside the band and design, the quality is stood the test. For another example, the food or daily necessities in convenience store, are always packed by packaging film. In addition to the fashion appearance, the quality is recognized by customers for long time.
In packaging industry, aluminum foil packaging bag is one of the common categories. So it’s important to know whether it reaches the testing standard and the customer’s requirement. Because it means this sample or mass products after finishing production have good quality with less than 1% fraction defective, and could meet the special requirements of different customers. Then, how to test the quality of the foil packaging liner in details? What is the testing items or contents? Let’s learn more about it.
- Material identification: there are supplier’s information, item name, production date and quantity on it.
- Packaging(carton or pallet): good packaging could protect the products in bag and prevent it from damaging by the external environment.
- Appearance of foil packaging bag: there is no any stains, fold on the surface. And the color doesn’t vary and fade.
- Printing: the design contents is intact and no any chromatic aberration.
- The shape of foil packaging bag: good shape without stains and fold. The sealing area is symmetrical without channel on the surface.
- Colloid confirmation of foil packaging bag: inspected by visual or magnifying glass to check crack or glue failure, the heat-seal edge with second-thirds is no transferred.
- Peeling testing: there are no serious fragments and tearing of other parts in peeling process.
- Residual leakage testing: it means after the liquid is filled in the foil bag, no escaping during a certain amount of time. Specifically, the liquid with height 5mm in the bag and is still for a while, should be no obvious leakage outflow throughout the thermal area. Once this testing step is finished, the inspection certification could be issued. Otherwise, the customer should refuse to issue it and require the next testing.
These testing steps above are to show how to examine the quality. Different customers have different demands about it. If the manufacturer make the foil packaging bag strictly as the standard, believe it’s not difficult to pass these required standard and recognized by market.
