What is the difference between ordinary packaging bags and food packaging bags
I believe many people do not know, what is the difference between food packaging bags and other packaging bags on the market, in fact, there are many differences between the two. First of all, in the raw materials, food packaging bags to use food grade plastic film manufacturing production, this film is composed of multilayer composite film, that is, we often say that the hard plastic, transparent or printed. Secondly, in use, the food packaging bag should be marked with relevant information, that is, the name of the food, food ingredients, nutritional ingredients, implementation standards, shelf life, storage methods, eating methods, manufacturer's information, etc. It doesn't matter, next, home to introduce the difference between ordinary packaging bags and food packaging bags, take a look at it.
Food packaging safety is a worldwide problem. The safety standard of food packaging in China is QS, which is the abbreviation of quality and safety. The dissolution of packaging materials is the key to affecting food safety and hygiene. As early as 1980, the world-famous food packaging expert CONORRELIY discussed in the book "METALCONTAMINATIONOFFOOD". In recent years, there are also regulations in the HACCP safety system.
1. paper packaging. Paper is the oldest and most traditional packaging material, but its unsafe hidden danger can not be ignored. The main reason is that chemicals such as impermeable agent/sizing agent, filler, bleaching agent and dyeing agent should be added to the pulp in the papermaking process. The anti-penetration agent mainly uses rosin soap; the filler uses kaolin, calcium carbonate, titanium dioxide, zinc sulfide, barium sulfate and magnesium silicate; the bleaching agent uses calcium hypoxic acid, liquid chlorine, hypochlorous acid, sodium peroxide and hydrogen peroxide, etc. The dyeing agent uses water-soluble dyes and pigments, the former has acid dyes, alkaline dyes, direct dyes, and the latter has inorganic and organic pigments.
2. plastic packaging, plastic is the most widely used food packaging materials. Plastics can generally be divided into two types: thermal hardening and thermal plasticity. 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 resin, such as PET, PEN, etc. According to different resins, different additives and adhesives used in the production of composite materials, such as TDI, TDA, etc.
2023-12-26