The basic requirements of canned food for containers are as follows:

(1) Non-toxic: Since the canned container is in direct contact with food, it must be non-toxic to ensure food safety. Canned containers should comply with national hygiene standards or safety standards.

(2) Good sealing: Microorganisms are the main reason for food spoilage. As a food storage container, it must have reliable sealing performance, so that the food will not be spoiled due to external microbial contamination after sterilization.

(3) Good corrosion resistance: because canned food has a certain degree of deterioration. Nutrients, salts, organic substances, etc., are easily decomposed in the process of high temperature sterilization, thereby aggravating the corrosion of the container. In order to ensure the long-term preservation of food, the container must have good corrosion resistance.

(4) In terms of carrying and use: it should have the strength and easy to transport.

(5) Suitable for industrial production: In order to improve production efficiency, reduce costs, and stabilize quality, canned food can withstand various mechanical processing in the production process and meet the requirements of factory mechanization and automated production.