Vees are irregularities in the double seam due to insufficient or no overlap between the cover and body hooks. They appear as “V” shapes around the bottom edge of the cover hook radius. Some causes for Vees forming in the cover hook are:

1. Loose 1st operation seam: Tightening the 1st operation seam can usually eliminate Vees.
2. 1st operation seaming roll groove-profile is too wide: This may cause insufficient overlap between the cover and body hooks.
3. Worn 1st operation seaming roll: A worn seaming roll can lead to irregularities in the double seam.
4. Excessive seaming stock in the cut edge of the cover: This can cause the cover hook to not properly engage with the body hook.
5. Product trapped in the seam: If there is any product caught in the seam, it can cause Vees to form.
6. Wrinkled seaming panel of the cover: A wrinkled seaming panel can lead to insufficient overlap between the cover and body hooks.

To address Vees, it’s essential to inspect and adjust the seaming process, ensuring proper tightness settings, maintaining seaming rolls, and avoiding product contamination in the seam.

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