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1. Non-toxic raw materials, quality and safety
Aluminum foil is made of primary aluminium alloy and rolled through many processes. It has no harmful substances such as heavy metals. In the process of aluminium foil production, high temperature annealing disinfection process is adopted. Therefore, aluminium foil can safely contact with food and will not contain or help bacteria grow. In most cases, aluminum foil does not react with food. On the market, a considerable number of plastic lunch boxes are manufactured from unknown raw materials, even fake and waste plastics, which makes it difficult to guarantee the quality and reliability. If calcium carbonate, talc powder, industrial paraffin and recycled waste are added to the raw materials of disposable plastic tableware, the evaporation residue (n-hexane) of the product will easily exceed the standard. In July 2013, the General Administration of Quality Supervision and Inspection, the General Administration of Industry and Commerce and the General Administration of Food and Drug Administration issued the Notice on Strengthening the Supervision and Administration of Disposable Foamed Plastic Tableware. Some local governments have also enacted regulations to limit the use of disposable non-degradable plastic tableware in order to protect the environment and prevent the harm of plasticizers to society and human body.
2. Convenient heating, no harmful substances are produced after heating.
Aluminum foil has high conductivity and thermal stability. Aluminum foil utensils can withstand the change of temperature well in the process of processing and packaging, and the molecular structure remains stable at high and low temperatures ranging from - 20 C to 250 C. It can be used at temperatures ranging from rapid freezing to extreme baking and roasting. During this period, the aluminum foil will not deform, crack, melt or burn, nor will it produce harmful substances. Aluminum foil is used to separate high temperature charcoal fire from smoke, which can avoid carcinogens caused by food scorching. Aluminum foil lunch boxes and containers are suitable for high temperature sterilization and heat sealing. Aluminum foil containers can be heated in a variety of ways, including ovens, ovens, anaerobic heating cabinets, steamers, ovens, microwave ovens (be sure to use in light and barbecue stalls), pressure cookers for heating food packaged in aluminum foil. In contrast, plastic lunch boxes and containers exhibit significantly lower heat resistance than aluminium foil products, which release harmful substances when exposed to high-temperature food, water or heated at high temperatures, affecting human health.
3. Easy to shape, easy to seal and wrap, to ensure food hygiene
Aluminum foil has good formability. In the process of pressing tableware, cracks and cracks will not occur even in the wrinkles and edges. Aluminum foil of different shapes, thicknesses, alloys and heat treatment states can be selected according to the need to accurately reflect the use of the product. Aluminum foil lunch boxes and containers can be sealed by using either the same cover made of aluminum foil or the cover made of paper or other materials, which is easy to shape change and wrinkle. It has strong heat preservation and fresh-keeping ability. It can avoid being scattered or polluted in the process of food storage and transportation and significantly reduce the waste of food. For large-scale food delivery enterprises and central kitchen distribution, the auto-sealing equipment developed by the aluminum foil box manufacturing enterprises can be used to improve the distribution efficiency, and the effect is obviously better than that of other materials.