Uploaded June 2026 | Updated September 2026, 3 weeks ago

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These vertical wrinkles form during the necking process, where the can’s diameter is progressively reduced across multiple stages. When material flow becomes unstable (often due to uneven wall thickness, insufficient lubrication, or worn tooling) the result is localized buckling in the necked region.
Neck pleats are considered a critical defect because they can compromise the sealing surface, leading to leaks, product loss, and downstream quality failures. #CansAreCool #CanMaking #Manufacturing #Engineering #MetalPackaging #AluminumCans #ForCanMakersByCanMakers