Will Compostable Packaging Actually Hold Up on a Bottling Line? What Breweries Ask Before Switching

Every brewery that considers switching from plastic can carriers to compostable packaging asks some version of the same question first: "Will this actually survive my packaging line, my truck, and my customer's fridge or is it going to fall apart?"

It's a fair question. Nobody wants to swap out reliable packaging for something that looks great in a sustainability pitch deck but doesn't survive real-world handling. Here's a straight answer.

The real concern isn't sustainability; it's risk

Brewery owners aren't skeptical of compostable packaging because they don't care about the environment. They're skeptical because a packaging failure is expensive and visible: cans falling apart on a pallet, rings splitting during transit, or product returned by a distributor. The switch has to work operationally before it can matter environmentally.

So the right question isn't "is it eco-friendly?" it's "does it perform the same or better than what I'm using now?"

What actually determines whether compostable packaging holds up

Three things separate packaging that works from packaging that fails in the field:

1. Moisture resistance. Cans sweat. Coolers are wet. Trucks aren't climate-controlled. Cardboard-based carriers need a coating that resists moisture without relying on a plastic laminate (which defeats the purpose and can violate plastic packaging laws). The coating quality not the base material, is what determines whether a compostable ring holds up in humid or refrigerated conditions.

2. Line speed compatibility. A packaging material that requires you to slow down your line to avoid tearing or misapplication isn't a real alternative; it's a production bottleneck. Compostable carriers should apply at the same speeds as standard rings on standard equipment, without retooling.

3. Weight and drop tolerance. Distribution isn't gentle. Packaging gets stacked, dropped, and jostled through multiple hands before it reaches a shelf. Compostable material needs to hold six or four cans securely through that whole chain, not just in a demo.

What to actually test before switching

If you're evaluating a compostable packaging supplier, don't take performance claims at face value. Ask for:

• A free sample to run on your actual line, not a demo video
• Documentation on moisture and humidity testing
• Reference customers who've used it at production volume, not pilot batches
• Clarity on whether the coating is plastic-free or plastic-laminated (many "eco" options quietly use a thin plastic layer)

How Earthrings holds up

Earthrings can carriers are made from sustainable cardboard coated in a biodegradable formula engineered specifically to withstand moisture without any plastic laminate. They're built to run on standard packaging lines at standard speeds, and they're already in daily use by breweries shipping across the US, Canada, and the Caribbean.

The best way to answer the "will it hold up" question isn't to read about it it's to test it on your own line. You can request a free sample at earthrings.com and see how it performs before making any commitment.