Containers

摘要

A can body (40) drawn from a tinplate to comprise an end wall (41) and an integral side wall (42) which extends from the periphery of the end wall to a terminal portion defining a mouth, has a margin (48) of coating material, such as expoxy phenolic lacquer, applied only to an upper portion of the interior surface of the side wall (42) leaving the interior tin surface of the rest of the side wall and end wall (41) exposed. The side wall may be wall ironed from selected grade of tinplate. The advantages arising are protection of cold worked side wall material and control of the ammount of tin available to be picked up by a product in the can. Various methods are described for making the cans such as deep drawing and alternatively wall ironing.