Sustainable Packaging
Learn what a coffee pouch needs to protect freshness, aroma and shelf life, including oxygen barriers, moisture protection, valves and sealing.
Open a fresh bag of coffee and the aroma arrives before the first cup is brewed.
That aroma is also one of the hardest things for a coffee pouch to protect.
Roasted coffee starts changing after roasting. Oxygen can accelerate staling, moisture can affect quality, aroma compounds gradually escape, and freshly roasted beans continue releasing carbon dioxide. Ground coffee can be even more sensitive because much more of its surface is exposed.
So a coffee pouch has to do more than hold the product. It needs to create the right environment around the coffee and maintain it until the pack is opened.
Coffee packaging has to keep oxygen out and aroma in
Oxygen is one of the biggest concerns after coffee has been roasted.
As oxygen enters the pack, oxidation can change the oils and volatile compounds that contribute to coffee's flavour and aroma. Recent work with ground coffee found measurable aroma and sensory changes as oxygen and moisture exposure increased during storage.
At the same time, packaging has to deal with movement in the opposite direction.
Roasted coffee contains many volatile aroma compounds. If they gradually escape through the packaging, the coffee may still be usable but no longer smell or taste as fresh as it did when packed.
The connection between packaging barrier and freshness has been observed directly: coffee stored in packaging with stronger barrier properties retained freshness indicators better over time.
This is why coffee pouches often use high-barrier structures. The job is essentially two-sided: limit oxygen coming in while slowing the loss of aroma from inside.
Moisture matters more than it may seem
Coffee looks dry, so moisture protection can be easy to overlook.
But roasted coffee can absorb moisture from its surroundings, particularly under humid storage conditions. That can affect its chemical stability and eventually the quality of the cup.
This becomes especially relevant when coffee travels through warm or humid climates.
A 2024 study using coffee in compostable capsules found that higher temperature and relative humidity increased moisture uptake, and coffee quality declined faster when the packaging did not provide enough moisture protection.
For a coffee brand, this means the pouch specification cannot focus only on oxygen.
The water-vapour barrier matters too.
The required level will depend on the coffee, target shelf life, pack size and conditions the product will experience between roasting and consumption.
Freshly roasted coffee creates another problem: gas
Coffee is unusual because the product itself continues releasing gas after it has been packed.
During roasting, carbon dioxide develops inside the coffee bean. Some escapes soon after roasting, while the rest is released gradually afterwards.
Sealing freshly roasted coffee inside a pouch without accounting for this and pressure can build inside the package.
That is why we often see the small circular one-way valve on whole-bean coffee bags.
The valve is designed to allow carbon dioxide to leave while limiting oxygen entering from outside. The Specialty Coffee Association's overview of coffee staling also identifies degassing, oxygen control, gas flushing and packaging conditions as important parts of maintaining roasted-coffee freshness.
The exact requirement depends on the product. Whole beans and ground coffee degas differently, and the time between roasting and packing matters.
So a valve should not simply be copied from another coffee pack. It should be part of the packaging design for that particular coffee.
A great barrier is useless if the pouch leaks
A pouch can have excellent material specifications and still fail because of something much simpler: the seal.
A small channel, weak edge or imperfect closure creates a route for outside air and moisture. Once that happens, the barrier performance of the rest of the material matters much less.
For brands changing packaging materials, this is especially important.
The new pouch has to seal reliably at the required temperature, pressure and production speed. It also has to survive filling, transportation, stacking and handling without puncturing or opening.
Coffee packaging therefore needs to be evaluated as a finished pouch, not simply as a flat material sample.
Opening the pouch starts a second shelf life
Packaging protects coffee most effectively while the pack remains sealed.
Once the consumer opens it, fresh air enters and the internal environment changes immediately.
How the pouch is closed after each use can then affect how quickly freshness declines. A study comparing different storage methods after opening found measurable differences in coffee freshness, with the quality of the reclosure affecting oxygen and carbon-dioxide conditions inside the pack.
That makes features such as resealable zippers or effective closures particularly relevant for larger coffee packs that may be opened many times before they are empty.
Brands therefore need to think about both the unopened shelf life and what happens after the first cup is made.
Before switching a coffee pouch, test five things
A new packaging material should start with the coffee rather than with the material claim.
Brands should know:
Whether the product is whole bean or ground – ground coffee generally exposes much more surface area and can lose freshness faster.
The required shelf life – a locally sold coffee with a short distribution cycle may have a different packaging brief from one travelling internationally.
The oxygen and moisture barrier needed – based on the actual coffee and storage conditions.
Whether degassing needs to be managed – including whether a one-way valve is required.
Whether the pouch seals and runs reliably on the packing line – preferably tested using the actual product and machinery.
This is more useful than beginning with a statement such as “we want a paper pouch” or “we want to remove plastic”.
First define what the coffee needs. Then find the structure that can provide it.
Can coated paper work for coffee packaging?
Coffee has traditionally relied heavily on high-barrier plastic laminates, metallised structures and aluminium because the product demands strong protection.
But coated paper is becoming another material route worth evaluating.
At Pippa, our bio-based coating is made using agricultural waste streams and is designed to give paper oxygen and water-vapour barrier performance along with heat-sealing functionality.
The currently reported Pippa structure uses 55 GSM C1S paper with approximately 6–8 GSM of coating and has achieved average results of OTR 0.9 at 23°C and 0% RH and WVTR 0.6 at 38°C and 90–100% RH. Pippa has also developed coffee and tea sachet samples and conducted application and shelf-life testing with coffee.
Those numbers do not mean the same coated-paper pouch will work automatically for every coffee brand.
Roast profile, whole bean versus ground coffee, target shelf life, valve requirement, storage conditions and sealing process still have to be evaluated together.
That is the more useful question for paper-based coffee packaging.
Not simply “Can coffee go into paper?”
But “Can this particular pouch protect this particular coffee until the moment someone opens it?”
FAQs
1. What type of pouch is best for coffee packaging?
A good coffee pouch should provide strong oxygen and moisture barriers, reliable sealing and, where needed, a one-way degassing valve.
2. Why does coffee need high-barrier packaging?
Coffee is sensitive to oxygen, moisture and aroma loss. High-barrier packaging helps slow these changes and protect freshness for longer.
3. Does ground coffee need different packaging from whole beans?
Yes. Ground coffee has more exposed surface area, so it can lose aroma and freshness faster than whole beans.
4. Why do coffee pouches have one-way valves?
One-way valves allow carbon dioxide released by freshly roasted coffee to escape while limiting oxygen from entering the pouch.
5. How does oxygen affect coffee freshness?
Oxygen can accelerate oxidation, which may change the flavour, aroma and oils in roasted coffee over time.
6. Why is moisture protection important for coffee packaging?
Coffee can absorb moisture from humid conditions, which may affect aroma, stability and overall quality during storage.
7. Does the seal of a coffee pouch affect shelf life?
Yes. Even a high-barrier material can perform poorly if the pouch has a weak or incomplete seal that allows air or moisture to enter.
8. Can paper be used for coffee pouches?
Yes, if the coated paper provides the required oxygen, moisture and sealing performance for the specific coffee and target shelf life.
9. Can Pippa be used for coffee packaging?
Pippa has developed coated-paper samples for coffee applications and provides oxygen, water-vapour and heat-sealing performance that can be evaluated for coffee pouches.
10. Does Pippa work for every type of coffee?
Not automatically. Whole beans, ground coffee, roast profile, shelf life, valve requirements and storage conditions all need to be tested for the specific application.
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