Three-piece tin plate metal Food and beverage cans appeared earlier, and have a history of more than 200 years. Three-piece tin plate material cans refer to can-type packaging containers that are formed by crimping, bonding, and resistance welding processes using metal tin sheets as materials. The lid consists of three parts, so it is called a three-piece can. Three-piece tin sheets cans are widely used in food and beverage packaging. The main raw material is tinplate, which can produce cans of various shapes. The material utilization rate is high, the size can be easily changed, and the production process is mature. At the same time, the can body has large thickness and high strength. Objects provide good support.
Two-piece cans came out in the middle of the 20th century. The entire can body consists only of the can body and the can lid, so it is called a two-piece can. Two-piece cans are made of sheet metal through punching and drawing. It has the advantages of good sealing, high production efficiency, and saving raw materials. The main material is aluminum. Carbonated beverages, beer, and some tea beverages use two-piece cans.
To prevent deformation, punch in the tank. Carbonated drinks and beer are rich in carbon dioxide, and they are not easy to deform after being canned. Non-carbonated drinks need to be filled with nitrogen to maintain the pressure inside the can when using two-piece cans.
Due to the high cost of nitrogen filling equipment, early beverage manufacturers mainly used three-piece cans. With the improvement of technology and equipment, tea beverages and coffee have gradually transitioned to two-piece cans to reduce costs. From the perspective of taste, the precipitation of tin plate metal will have a certain effect on the taste of beverages, while carbonated beverages
Aluminum and tin plate metal have no significant effect on it, and both aluminum and tin plate material cans are used. For beer, the impact of iron ions on the taste is more obvious than aluminum ions, and beer manufacturers are more inclined to use aluminum cans for packaging.
