What are the differences between ordinary packaging bags and food packaging bags

Many people may not know the difference between food packaging bags on the market and other packaging bags, but in fact, there are many differences between the two. Firstly, in terms of raw materials, food packaging bags should be manufactured using food grade plastic films, which are composed of multi-layer composite films, commonly known as hard plastic, transparent or printed. Secondly, in terms of use, food packaging bags should be marked with relevant information, such as the name of the food, ingredients, nutritional composition, implementation standards, shelf life, storage methods, consumption methods, and manufacturer information. Do you know the differences between ordinary packaging bags and food packaging bags? It's okay. Next, let's introduce the difference between ordinary packaging bags and food packaging bags. Let's take a look together.
Food packaging safety is a global issue, and the safety standard for food packaging in China is QS, which stands for quality and safety. The dissolution of packaging materials is a key factor affecting food safety and hygiene. As early as 1980, the world-renowned food packaging expert CONORRELY discussed it in his book "METALCONTAMINIONOFFOOD", and in recent years, there have been regulations in the HACCP safety system.
1、 Paper packaging. Paper is the oldest and most traditional packaging material, but its safety hazards cannot be ignored. The main reason is that chemicals such as anti-seepage agents/sizing agents, fillers, bleach, dyeing agents, etc. need to be added to the pulp during the papermaking process. The anti-seepage agent mainly uses rosin soap; The fillers are kaolin, calcium carbonate, titanium dioxide, zinc sulfide, barium sulfate, and magnesium silicate; Bleaching agents include calcium hypochlorite, liquid chlorine, hypochlorous acid, sodium peroxide, and hydrogen peroxide; Dyeing agents use water-soluble dyes and pigments, with the former consisting of acidic dyes, alkaline dyes, and direct dyes, while the latter consists of inorganic and organic pigments.
2、 Plastic packaging, plastic is the most widely used food packaging material. Plastics can generally be divided into two types: thermosetting and thermoplastic. The former includes urea resin UF, phenolic resin PF, and trichlorocyanamide resin MF; The latter includes vinyl chloride resin PVC, polyvinylidene chloride resin PVDC, polyethylene PE, polypropylene PP, polystyrene PS, nylon NY, styrene resin AS, styrene resin ABS, polyester resins such as PET, PEN, etc. Use different additives based on different resins and adhesives used in the production of composite materials, such as TDI, TDA, etc.