Canning and Fish Packaging Technology

Unit 8 - Metal Containers

8.1.4.Advantages and disadvantages of ECCS over tin plate

Advantages

• Lacquer adhesion on ECCS is superior to tin plate and resistance to under film (below the lacquer film) corrosion is excellent.
• Resistant to sulphide blackening.
• Workability of enameled ECCS in superior to tin plate and lacquer adhesion and strength remains even after deep drawing.
• ECCS does not contain low melting tin, hence lacquering can be done at high temperature for a shorter time.
• Low cost compared to other plates for can manufacture.

Disadvantages

• In ECCS surface film does not act as a sacrificial layer and prone to corrosion from outside.
• Unlacquered ECCS is less resistant to corrosion than tinplates.
• Cans can not be made by side seam soldering. However, cemented side seam cans, welded cans and DRD cans can be made.