In the current market, almost all products are packed in bags, no matter in food, industry or medicine industries. The packaging used by each industry also has different requirements. Different products use different packaging. The following section will explain how to judge whether the vacuum packaging bag is qualified? Let’s have a look.

1. From the view of sealing tightness, if there are some thin small seams in the sealing, it is determined as unqualified product.

2. Observe from the visual appearance to see whether there are significant scratches and pinholes on the surface of the composite vacuum packaging bag. Check whether the seal is polluted. It can not be determined immediately by visual inspection. Slight neglect is the cause of future leakage erosion. To check the sealing defect, a surface active agent with dye can be sprayed into the seal to see whether it can pass through, so as to distinguish the sealing tightness.

3. It is the observation of sealing strength test. Cut the sealing of the inspected composite vacuum packaging bag into 15mm wide strips, and measure the sealing strength with a versatile material tester at a speed of 300 ± 20mm/min. Generally, the sealing strength of the composite bag should be 2334N/15mm.

The above is about how to judge whether the vacuum packaging bag is qualified. After reading, do you know? I hope it will be helpful to you.