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Third Edition, Nov 2016
ACS V4.2
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37
Section E. Seam Measurement
Section E.
Seam Measurement
The process of seaming a can involves folding the lip found on the top edge of the empty can body, into the lip of the lid.
This results in a final seam comprised of five metal thicknesses, like in Figure 32 below. You can further break this down
by examining the results of both the first and second operation seaming rolls. The first die has a wider roll that creates the
initial loose fold. This operation puts the hooks in place but does not seal it. The second die is narrower, pressing the seam
into itself and actually sealing the can.
Figure 32 Visualization of a double seam in 3D
E.1
Can Seam Evaluation Training Videos
There are three detailed Can Seam Evaluation training videos available on our website which supplement the instruction
in the following several pages:
www.cask.com/service-support/seam-evaluation-videos/