Electrolytic Tin Plate for Food Cans Tinplate Grade with Alkali and Acid Resistance

• Principle: The chemical properties of the tin layer itself are relatively stable in an acidic environment. Tin can form a protective film with some acidic substances (such as organic acids in food) to prevent acidic substances from further corroding the steel plate. For example, in canned fruits (such as canned citrus), when acidic components such as citric acid in the fruit contact the can body, the tin layer will undergo a certain chemical reaction, so that the tin forms a protective tin oxide film on the surface to prevent acidic substances from contacting the steel plate.
• Application advantages: This acid resistance allows tinplate to be used to package various acidic foods, such as ketchup, canned pickles, etc. If acidic food is packaged with acid-resistant materials, it is easy to cause the can body to corrode and the food to deteriorate, while tinplate can ensure the quality of food during the shelf life.

• Principle: In an alkaline environment, the tin layer on the surface of the tinplate can also play a certain protective role. The tin layer can prevent alkaline substances (such as some food additives that may be alkaline) from chemically reacting with the steel plate. This is because tin can resist the corrosion of hydroxide ions in alkaline solutions to a certain extent.
• Application advantages: For some foods containing alkaline ingredients, such as some functional beverages containing alkaline buffers or foods that are weakly alkaline due to special processing technology, alkaline-resistant electrolytic tinplate can effectively prevent the can body from being corroded, ensuring the safety and shelf life of the food.

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OUR COMPANY

Shanghai Quanjiang Industrial Co.,ltd is a large-scale enterprise integrating manufacturing and sales

( international export). Established in 2001. With an area of more than 40 000 square meters. It's

located in Shanghai,China, We has advanced production equipment, equipped with pushing

machine, press, large heat treatment furnace,chamfering machine,sawing machine,large

sandblasting machine and other key equipment and a variety of testing instruments.