Beer Packaging

Why Packaging Matters

Packaging is where brewing ends and brand experience begins. The container protects beer from its two greatest enemies — oxygen and light — while communicating brand identity to consumers. Getting packaging right directly impacts beer quality, shelf life, sales, and profitability.

Format Comparison

Cans

Advantages — complete light protection (zero UV transmission), superior oxygen barrier when seamed properly, lighter weight (lower shipping cost), faster chilling, recyclable, more compact storage, camping and pool-friendly. Disadvantages — perception of cheapness (fading), canning equipment investment ($50K-250K for a small line), metallic taste concerns (eliminated by modern liner technology, but persistent in consumer perception).

The craft beer industry has overwhelmingly shifted to cans. Over 60% of new craft packages are cans. The format is superior for beer quality in nearly every measurable dimension.

Bottles

Advantages — traditional aesthetic, no liner concerns, perceived premium quality for certain styles (Belgian ales, barleywines), reusable in some markets. Disadvantages — brown glass blocks most UV but not all. Green and clear glass provide almost no protection (light strike/skunking). Heavier, breakable, more expensive to ship. Crown caps allow more oxygen ingress than can seams.

Kegs

Advantages — lowest oxygen exposure (properly purged kegs), lowest packaging cost per serving, best for draft-focused businesses. Disadvantages — limited to on-premise accounts, requires draft system infrastructure, heavy to handle, and expensive initial investment ($100-150 per keg).

Packaging Equipment

Canning Lines

Manual/semi-automatic (50-200 CPM) — $30K-80K. Suitable for breweries under 5,000 barrels/year. Two operators fill and seam cans with some manual intervention. Automated (200-600 CPM) — $150K-500K. Conveyor-based systems with automatic filling, seaming, date coding, and case packing. Mobile canning — contract services bring a canning line to your brewery. $1-3 per case premium over owning equipment, but no capital investment. Ideal for small breweries canning fewer than 200 barrels/year.

Dissolved Oxygen Control

Oxygen is beer's primary enemy after packaging. Every step of the packaging process must minimize oxygen pickup:

Pre-purge containers — flush cans or bottles with CO2 before filling. Under-cover gassing — flood the can top with CO2 just before seaming. Fill-on-foam — agitate the can during filling so beer foams, pushing air out before seaming. Seam quality — double seams must be tight and consistent. Check seam dimensions regularly with a seam scope.

Target: less than 50 parts per billion (ppb) total package oxygen (TPO). Below 30 ppb is excellent. Above 100 ppb, expect noticeable staling within 60 days.

Date Coding

Print a packaged-on date or best-by date on every package. Most craft beer is best consumed within 90-120 days of packaging. IPAs and hop-forward styles degrade faster (60-90 days). High-ABV and sour styles may improve with age.

Shelf Stability

Beyond DO control, shelf stability depends on: pasteurization (most craft skips this), microbiological cleanliness, pH (lower is more stable), alcohol content (higher is more stable), and storage temperature (cold chain maintenance dramatically extends shelf life).