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One of the primary intents of coating on the inner wall of food tins is to avoid a large amount of dissolution of tin. However, some foods require some tin in the tank to dissolve, forming free tin ions to maintain the appearance and flavor of the food in the tank. Without free tin ions, the color of light-colored foods tends to be dark, and the color of green vegetables will change. In the state of lack of oxygen in the can, tin ions and food form tin-chromium compounds to remove sulfides in the food. These effects will allow the canned food to be stored, sold, and eaten for a long time.

The metal material of the three-piece metal candy tins body is tinplate. The metal packaging material for the top and bottom covers can be tinplate, chrome-plated iron, and aluminum. Aluminum will not rust, while tinplate and chrome will rust when exposed to wet environments.

Coating tinplate refers to tinplate with a thick organic compound printed on the tin plated tinplate and cured by high temperature baking, so that a layer of polymer protective coating is adhered to the surface. Compared with tinplate, coated tinplate can provide better corrosion resistance.

In daily life, our common packaging products are mainly paper packaging, plastic packaging, and tin can packaging. With the increasingly serious environmental pollution, people's environmental protection awareness has gradually increased, and the tin box and tin can packaging have gradually received people's attention. So, what impact does the tin box and tin can packaging have on environmental protection?

Today, tin boxes and tin cans are more and more widely used in the tin food cans grease tank packaging.

Today, tin boxes and tin cans are more and more widely used in the food packaging. With the continuous upgrading of industrial technology, the manufacturing process of food tin boxes and food can has become more and more sophisticated. The metal food cans packaging is different from other packaging. there are own unique production steps:

Food itself has certain nutrients and moisture, which are the basic conditions for the production and reproduction of bacteria, mold, and yeast. When the food is stored at a temperature suitable for their reproduction, it will cause food to deteriorate. If food is packaged in aseptic packaging or after high temperature sterilization, refrigeration, etc., it will prevent the occurrence of food spoilage and prolong the shelf life of food.

The existing containers include metal can, aluminum cans, paper, and plastic containers. The recovery characteristics of these containers are different, but the metal can are superior to other packaging materials containers in the recovery processing.