Coffee bags require a high aroma and oxygen barrier, as coffee oils and aromatic compounds oxidise quickly. The material composite determines shelf life, aroma retention and best-before date.
PET12 / AL7 / LDPE110 — aluminum high barrier
A three-layer composite of PET (print side), a 7 micron aluminum barrier layer and an LDPE sealing layer. OTR < 0.1 cm³/m²·24h, WVTR < 0.1 g/m²·24h, complete light and aroma barrier. The standard for premium coffee and specialty coffee with a best-before date of up to 12 months.
Kraft paper / AL7 / LDPE — paper-aluminum hybrid
Kraft paper outer (natural or white), aluminum barrier layer and PE inner. A handcrafted look with barrier values technically identical to a pure PET/AL composite. Popular with specialty coffee producers and premium coffee.
PE / EVOH / PE — mono-PE recyclable
A monomaterial composite with a thin EVOH barrier layer (< 5%). OTR approx. 1–3 cm³/m²·24h — sufficient for coffee with a best-before date of up to 6–8 months. NIR-detectable in the PE stream, PPWR-compliant from 2030.
Aroma protection valve — a mandatory component for fresh roasted coffee
Coffee beans release CO₂ and aromatic compounds after roasting. An aroma valve lets CO₂ escape while preventing oxygen ingress. Standard versions are one-way valves with a silicone or membrane mechanism.
Window and appearance
On request, with a window for bean presentation. Transparent film is incorporated into the material composite, and the barrier is retained in the non-transparent areas.
All materials are certified for food contact in accordance with EU 10/2011. Declaration of conformity (PIM) with every order on request.