There are currently 8 industry standards for food packaging films, and the main indicators of the standards are divided into physical and mechanical performance indicators and hygienic performance indicators. Among them, the physical and mechanical performance indicators mainly include tensile force at break (or tensile strength), elongation at break, peel force, heat sealing strength, anti-pendulum impact energy, water vapor transmission rate, oxygen transmission rate, pressure resistance of bags, bags drop performance, heat and medium resistance, oil resistance, cold resistance, heat resistance, etc. Hygienic performance indicators include sensory, evaporation residue, evaporation residue, evaporation residue, decolorization, solvent residue, sterilization indicators, etc.
Common food on the market such as instant noodles, biscuits, puffed food, candy, milk, milk powder, beverages, cooked food, beef jerky, chestnut, mustard and other foods sold in flexible packaging are all made of food packaging films.
