According to the scope of application, food packaging bags can be divided into: ordinary food packaging bags, vacuum food packaging bags, inflatable food packaging bags, boiled food packaging bags. Cooking food packaging bags and functional food packaging bags. Inspection Standard The quality of food packaging bags in the flexible packaging industry, especially the hygiene quality is directly related to the safety of the food packaged, so it is necessary to ensure that the raw materials and additives used meet the quality requirements of the management system.
It is necessary to improve and strictly implement the industry and national standards for packaging film bags, strengthen the inspection and supervision of food packaging, prevent unqualified food packaging from flowing into the market, and strengthen management to ensure the healthy development of the flexible packaging industry. The inspection items of food packaging single film bags are mainly divided into the following categories: composite packaging bags
The appearance must not be impaired by the use of bubbles, perforations, water marks, burst tendons, poor plasticization, fisheye plague and other defects.
Specification, width, length, thickness deviation should be within the specified range. Plastic bag
The physical and mechanical properties include tensile strength and elongation at break. It reflects the ability of the product to stretch during use. If this item is unqualified, food packaging bags are prone to breakage and damage during use.
Hygienic performance
Including Caifa residues (acetic acid, ethanol, n-hexane). Potassium permanganate consumption, heavy metals, decolorization test. Evaporation residues reflect the possibility that residues and heavy metals will be precipitated when food packaging bags encounter vinegar, wine, oil and other liquids during use. Residues and heavy metals will adversely affect human health. In addition, residues will directly affect food quality such as color and flavor.
Degradability
According to the different types of degradation of products, they can be divided into photodegradation type, biodegradation type and environmental degradation type. The degradation performance reflects the ability of the product to be accepted by the environment after use and discard. If it is not good, it will not be accepted by the environment, thus forming white pollution. "Vacuum bag
The inspection items of food packaging composite film bags are mainly divided into the following categories: plastic packaging bags
The appearance should be smooth, without scratches, scalds, air bubbles, oil breakage and wrinkles, and the heat seal should be smooth and free of seals. The film must not have cracks, pores and composite layer separation. No pollution of foreign matter and oil stains. The bagged soaking liquid shall not have odor, odor, turbidity and discoloration.