Can Filling Lines for Beer and Beverage
A can filling line is the shortest route from package to pallet — but only if the seamer and the filler are specified together. Oxygen pickup and seam quality decide whether the product reaches the customer as intended.
Line configuration
Empty cans arrive in a depalletizer, are rinsed with ionized air or water, purged with CO₂, filled through an open-air or counter-pressure filler, and seamed immediately in the same machine. A fill-level inspector and a pressure/seam inspection station follow, then the can enters a shrink packer or cartoner.
Oxygen control
Dissolved oxygen pickup is the quality metric of a canning line. It is controlled by CO₂ or nitrogen purging before filling, by the fill height (headspace), and by seaming immediately after fill. Purge gas consumption and fill speed trade off against each other — the line should be specified with your target dissolved oxygen level, not just BPH.
Seam quality
The double seam is the most critical joint in the line. A seamer runs multiple seaming stations and should be checked with a seam inspection routine at start-up and at defined intervals — seam dimension drift causes leaks and spoilage that no downstream check can recover.
Capacity selection
| Line size | Typical output | Fits |
|---|---|---|
| Craft / regional | 600–1,500 cans/hour | Breweries and juice brands starting canning |
| Mid-size | 3,000–9,000 cans/hour | Regional beverage plants |
| Industrial | 12,000+ cans/hour | National brands |
Frequently Asked Questions
How is oxygen pickup controlled in canning?
By CO₂ or nitrogen purging of the empty can, a controlled fill height (headspace), and seaming immediately after filling. The line should be specified with a target dissolved oxygen level, because purge gas usage and speed trade off against it.
Why does the seamer matter more than the filler?
The double seam is the can's only seal. Seam dimension drift causes leaks and spoilage that downstream inspection cannot recover, so seamer condition and seam checks are checked at start-up and at defined intervals.
What output canning line should a craft brewery start with?
Most craft and regional canning starts at 600–1,500 cans per hour, which fits manual or semi-automatic depalletizing. Mid-size plants run 3,000–9,000 cans per hour with automatic depalletizing and inspection.
Can one line fill both beer and soft drink cans?
Yes — counter-pressure fillers handle both carbonated beer and CSD. Cleaning and changeover between products with different CO₂ levels and recipes is the practical consideration, not the machine type.
Explore more: CSD Filling Lines · Can filling machines.