The quality of food packaging bags in the flexible packaging industry, especially the quality of hygiene, is directly related to the safety of the foods packaged. Therefore, it is necessary to ensure that the raw materials and additives used meet the quality management system.
It is necessary to improve the industry and national standards for packaging film bags and strictly enforce them, strengthen the inspection and supervision of food packaging, prevent unqualified food packaging from entering the market, and strengthen management to ensure the healthy development of the flexible packaging industry.
The inspection items for food packaging single film bags are mainly divided into the following categories:
Appearance shall not have any ills such as air bubbles, perforations, water marks, gluten, poor plasticization, and fisheye stiffness.
Specifications, width, length, and thickness deviation shall be within the specified range.
Physical and mechanical properties include tensile strength and elongation at break. It reflects the ability of the product to stretch with the product. If this is not acceptable, the food packaging bag is prone to cracking and damage during use.