How to identify whether the vacuum bag packaging is up to standard

How to identify whether the packaging of vacuum bags meets the standard? The manufacturer of food packaging bags will introduce the following factors:

First of all, observe from the sealing tightness. If there are some thin small seams in the sealing, it will be judged as unqualified products.

Secondly, observe from the visual appearance to see if there are obvious scratches and pinholes on the surface of the composite vacuum packaging bag. It is important to check whether the seal is contaminated. It can not be determined immediately by visual inspection. Slight neglect is the cause of leakage erosion in the future. To check the sealing defect, a kind of surface active agent with dye can be sprayed into the seal to see whether it passes through or not to distinguish the sealing tightness.

After Z is the observation of sealing strength test. Cut the sealing of the inspected composite vacuum packaging bag into a strip with a width of 15mm, and measure the sealing strength with a universal material tester at a speed of 300 ± 20mm/min. Generally, the sealing strength of the composite bag should reach 2334N/15mm.

Jiangsu Gengda Packaging Co., Ltd., a cooking bag manufacturer, is a professional manufacturer specializing in research and development, production and sales of composite flexible packaging. We have many production lines, such as printing machine, compound machine, bag making machine, slitting machine and fillet machine, which can complete the whole production process from raw materials to finished products. We look forward to working with you.