Metal packaging material is one of the traditional packaging materials, with high barrier, high temperature resistance, easy recycling, etc. It has been used in food packaging for nearly 200 years. Metal packaging containers can be divided into two categories, one is non-coated metal. One type is coated metal. The safety problem of uncoated metal packaging containers is mainly the dissolution of toxic and harmful heavy metals. This article will introduce you to the food 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 the metal has better protection for the internal food, and the metal is easy to be packaged 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 causing pollution to food. Therefore, at present, although metals can be widely used and have an important position, their use is limited, and they are generally used for canned packaging. Due to the complexity of the composition of the packaging material, the precipitation of substances in the food packaging material occurs in the food, possibly due to the migration of these substances to the food, or in the food due to accidental extraction. This causes chemical migration of food packaging to have a negative impact on food. Article source address: http:// Metal Trivet,Steel Trivet,Stainless Steel Trivets,Metal Trivet Stand Jiangmen Sunbond Houseware Manufacturing CO.,LTD , http://www.sunbondhw.com