Food packaging materials are an inseparable and important part of food. It plays an important role in protecting, promoting and facilitating the storage, transportation and sale of food. However, due to its direct contact with food, the long-term use of some inferior food packaging contact materials, the toxic and harmful substances contained in it will gradually infiltrate into the food during storage and use, accumulating in the body leading to chronic poisoning, causing direct The hazard, this article will introduce you to the advantages of green packaging materials.
The metal materials used in current food packaging include iron, aluminum, stainless steel, and the like. The packaging material can use metal, because the metal has better ductility and is more convenient to process. The outer packaging formed by metal has better protection for the food inside, and the metal is easy to package and thus can be promoted.
However, metal is good for paper, glass and ceramics, but the price is relatively high and the packaging cost is not cheap. Moreover, the chemical nature of the metal is relatively active, it is oxidized and eroded in the air, and it is easy to chemically react with foods containing strong acidity and alkalinity, thereby polluting food. Therefore, at present, although metal can be used widely and has an important position, its use is limited, and it is generally used for canned packaging.
Packaging should be easy to reuse (Reus or easy to recycle (Recycl) through repeated use, or through recycling of waste, production of recycled products, incineration using heat, composting to improve soil, etc., to achieve the purpose of recycling does not pollute the environment And make full use of resources.
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