The food industry is one of the main markets for tinplate boxes, which has good barrier performance and processing performance, and is commonly used in the packaging of mooncakes, chocolate, tea, coffee, biscuits, candies and other foods. The core material of tinplate is iron, which is coated with a layer of tin on the surface by electrolysis or hot dip plating. Iron is active, easy to electrochemical reaction with oxygen, food and corrosion of packaging, resulting in the destruction of packaging barrier and integrity. Although the surface of tinplate is plated with tin, because tin is more expensive, the amount of tin plating is generally not high, which is not enough to resist the invasion of the content on the packaging. Therefore, except for fruits and vegetables that are less corrosive and have reduction requirements, most food iron boxes require internal coating. Coatings are organic compounds, coatings that do not reach food grade, applied to tinplate boxes, will pose a threat to human health, so it is very necessary for the detection of food iron box coatings.
The storage of food is very important, if the storage method is not right, it will not only destroy the essence of the food, but also have great harm to the subsequent people's consumption, so we must pay attention to the preservation of its food, so that we can use it safely and safely.
So we want to avoid using low-quality materials made of iron box utensils to store food, which is a very important point, we need to understand clearly, but for high-quality tinplate material production of iron box packaging is different, the coating inside the iron box can effectively prevent food from contacting the metal iron box, avoid food is oxidized, so that there will be no harm to human consumption.
