Production line management system, production line management methods, can management system, cans, and can manufacturing methods

Abstract

The invention proposes a production line management system, a production line management method, a can management system, cans, and a can manufacturing method with high reliability so that individual containers can be identified and managed separately. The production line management system for managing the container line includes a first reader to read the identification code applied to each container when the container has an identification code. This code indicates the container's identification symbol as it passes the first point on the production line. A second reader reads the identification code applied to each container after the first reader has read the identification code. The system is then calculated to create a database in which the identification symbol is indicated by an identification code and related information about each container is linked, and the normality / abnormality of each container is determined by comparing the related information linked in the database with the identification symbol indicated by the identification code read from the second reading device with the previously determined established information.