It is important to learn to distinguish the quality of the tin can
tin can, vintage tin can with customized printing, square tin can with handle lid, this tin can with size 110x110x143(H)mm, It is important to learn to distinguish the quality of the tin can, First, see if the tin cans have lost paint color. The outer surface of the tin cans is printed with ink. The printing is divided into spot color printing and four-color printing. Good quality tin cans are printed with good ink, so paint is not easy to fall off during transportation.
Second, whether the iron can is resistant to corrosion. High-quality tin cans use high-quality tinplate as the raw material. Tinplate is iron with a layer of tin plating on the surface, so within three to five years, the tin can will not rust when exposed to the air. Inferior tin cans, due to cutting corners and other reasons, have a small amount of tin plating and are susceptible to rust in the air.
Third, the tightness of the iron can is not good. Some iron cans are not tight due to process errors or other problems during the production process. If such an iron can is used to package food, it will affect the shelf life of the food.
Fourth, whether the iron cans have passed the quality inspection. The iron cans must be inspected by a quality inspector before they can be removed from the warehouse. On the one hand, it is to check whether the iron cans are damaged. On the other hand, it is to check whether it meets national safety standards, especially for food. , Tin cans of health products.