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A drawn can carries a strong message to the consumer, and has eye-catching appeal. It is also a unique way to demonstrate the outstanding forming ability of steel. However, the market demands an attractive appearance (smooth surface, good print quality), and the ability to withstand seaming, retorting, and palletisation.
Drawing requires specific steel grades which exhibit low anisotropy. Low anisotropy minimises trim and preserves print quality after deformation.
For rectangular or oval drawn-cans, grades with lower formability properties are used in continuous annealing (CA) and batch annealing. For CA, grades TH330 and TH415 are recommended. For BA, grades TS275 and TS290 are recommended.
For complex shapes such as conical wall and non-linear contour, steel grades with very high formability are required. Creasteel® is the best-in-class solution and competes favourably with aluminium.
Metallic coating: Tin coating or ECCS. ECCS can be used when the can’s contents are not aggressive. ECCS also assists lacquer adhesion.
