What are the characteristics of food grade plastic bags?

In daily life, the most basic elements of life are nothing but clothing, food, housing, and transportation, and among the four major elements, "food" is undoubtedly the most important. With the continuous improvement of living standards, people are paying more and more attention to food safety. Whether the plastic bags used for packaging food meet food grade standards has become a common concern for many people. What are the characteristics of food grade plastic bags?
Food grade plastic bags are generally divided into ordinary food packaging bags, vacuum food packaging bags, inflatable food packaging bags, boiled food packaging bags, steamed food packaging bags, and functional food packaging bags. The materials are also diverse, and common food grade plastic bag materials include PE (polyethylene), aluminum foil, nylon, and composite materials. Food grade plastic bags have some common characteristics regardless of category and material in order to ensure fresh and disease-free food. Firstly, they require complete barrier against organic solvents, oils, gases, and water vapor; Secondly, it has excellent permeability, moisture resistance, cold resistance, heat resistance, light avoidance, and insulation properties, and also has a beautiful appearance; Thirdly, it is easy to form and has low processing costs; Fourthly, it has good strength. Plastic packaging bags have high strength performance per unit weight, impact resistance, and are easy to modify.
In addition to the above characteristics, food grade plastic bags also have some rigid requirements for consumers of edible products. Firstly, the main and auxiliary materials used generally contain very few harmful chemicals to the human body, or according to the special needs of the actual production process, the chemical content is within the national allowed standard range, and the chemical stability is strong; Food grade plastic bags sometimes have corresponding anti-corrosion, anti rust, and anti electromagnetic radiation functions to ensure the safety and hygiene of food from various perspectives.
Due to the close relationship between food grade packaging and people's lives, major manufacturers must strictly comply with production regulations and standards, and follow the production process of food grade plastic bags in order for their products to ultimately pass the audit and enter the market. So, how do consumers distinguish food grade plastic bags? Jinde Packaging believes that the following aspects can be taken into consideration: when receiving the packaging bag, observe the appearance first. The food grade plastic bag material has no odor, uniform texture, bright color, high glossiness and transparency; Then it can be touched by hand. Food grade plastic bags have a good hand feel, are non sticky, smooth, and have no obvious graininess; Only when these requirements are met can food grade plastic bags be considered safe and hygienic.