Why consider biodegradable pouches
Brands face growing pressure to reduce plastic waste. Biodegradable pouches offer an alternative for dry and semi-dry foods. They break down under industrial composting conditions, though not in a home compost bin. The actual breakdown depends on the material and the environment. For coffee, snacks, tea and pet treats, a compostable pouch can support a sustainability story without changing the filling line. But it is not a drop-in replacement for every laminate.
Before switching, check where the pouch will end up. Industrial composting facilities accept certified compostable packaging, but curbside recycling usually does not. If no composting infrastructure exists in your market, a recyclable mono-material pouch may be the better route. The right choice depends on your customers' waste streams, not just the material label.
Materials and barrier properties
Compostable pouches typically use PLA/PBS or paper-based laminates. These materials provide a moderate moisture and oxygen barrier. They suit short-shelf-life dry goods: ground coffee, biscuits, dried fruit, tea and pet treats. For oxygen-sensitive products, a high-barrier compostable structure may be needed, which can raise cost and reduce the range of available films. Standard PET/AL/PE and PET/NY/PE laminates still offer the strongest barrier for long shelf life.
If you need both sustainability and a long shelf life, consider mono-material PE or PP recyclable structures. They are not biodegradable, but they can be recycled where facilities exist. Kraft paper laminates offer a natural look and moderate barrier. The key is to match the material to the product's sensitivity and expected shelf life, not to the marketing label alone.
Filling and sealing considerations
Compostable films can behave differently on filling lines. They may have a lower heat-seal initiation temperature and a narrower sealing window than conventional laminates. Run a trial on your existing equipment to check seal strength, jaw temperature and dwell time. If you use a vertical form-fill-seal machine, confirm that the film runs smoothly without wrinkling or static build-up. For pre-made pouches, check that the zipper and valve, if used, are compatible with the compostable structure.
Add-ons such as degassing valves, zippers, tear notches and spouts are available in compostable versions, but not all combinations are certified. A one-way degassing valve is common for coffee, while a spout suits liquids and purees. If you need a spout, confirm that the compostable spout and cap meet your market's certification requirements. Always request a sample reel or pouch to test on your line before committing to a full run.
What drives the cost
Biodegradable materials usually cost more per kilogram than standard PE or PET laminates. The price gap narrows at higher volumes, but it rarely disappears. Printing method also matters. Digital printing is cost-effective for low MOQs, from 100 pouches, but the unit price is higher than rotogravure. Rotogravure becomes cheaper per unit at 10,000 pouches or 200 kg of film, but requires a plate setup. Lead times differ too: digital runs take 10-15 working days after artwork approval, while rotogravure takes 20-25 working days.
Other cost drivers include the barrier grade, the number of colours, and added features like valves, zippers or spouts. A compostable valve or spout can add significant cost. If your budget is tight, simplify the structure and reduce the number of colours. Remember that the total cost includes not just the pouch, but also the filling trial, freight and any certification testing you may need.
Certifications and claims
Compostable packaging claims must be backed by certification. Common standards include EN 13432 in Europe, ASTM D6400 in the US, and AS 4736 in Australia. These certify that the material breaks down in industrial composting conditions. They do not mean the pouch will compost in a home garden. If you plan to print a compostable logo, check the specific certification body's rules. Some logos require the entire package, including inks and adhesives, to be certified.
Be careful with terms like 'biodegradable' and 'eco-friendly'. In some markets, these are regulated. Vague claims can lead to greenwashing accusations. State the specific certification and the disposal method, for example 'certified compostable to EN 13432 for industrial composting'. Avoid implying that the pouch will degrade in a landfill or in the ocean. Clover Packaging works with BRC-certified factories, but certifications belong to the manufacturing partner, not to Clover itself.
Common mistakes to avoid
Buyers often assume that a compostable pouch will perform exactly like a conventional laminate. It will not. Shelf life may be shorter, and the pouch may be more sensitive to heat and moisture. Another mistake is ordering a full production run before testing the film on the filling line. Always request a stock sample or a small trial roll first. Free stock pouch samples are available; you pay only the courier.
Other pitfalls include ignoring the end-of-life infrastructure, using a compostable pouch for a product that needs a long shelf life, and choosing a material that cannot be printed with the required design. Plan early, involve your filling team, and confirm certification requirements before you commit to artwork. A small trial now can save a costly reprint later.