Brief discussion on the functions and categories of flexible Food Packaging Writing by Vivi Chen, Jan.1st,2023
In the general market, food packaging is mainly composed of composite soft packaging, flexible soft packaging, paper-plastic soft packaging, and aluminum foil soft packaging. The material used is to block the material, coating or co-extrusion membrane structure. Common plastics such as PVDC, PET, BOPP, PA, VMPET, AL, CPP, LDPE, PBAT, EVOH, etc. At the same time, it combines gravure printing, digital printing, flexible printing, dry composite, solvent-free composite and other processes to combine different materials to achieve Steady properties of blocking oxygen and water vapor during transportation, shelf life and consumer use to maintain the freshness of food. Among them, the values of OTR and WVTR are important indicators to measure the quality and function of flexible packaging. It can be said that the lower the OTR and WVTR, the better the barrier effect, so there is nothing wrong to combine these two as a reference in the selection of materials. The types of flexible packaging can be distinguished according to the shape of bags, such as commonly used three-sided seals, fin seal bags, zipper bags, Stand Up Bags, spouted bags, rollstock film, air valve bags, vacuum bags, etc. You can choose the appropriate bag shape according to the store characteristics of your own products. So that the product stands out in the market. Finally, I wish you all a happy New Year and all the best!
