Structure:
Back-Sealed Bag with Degassing Valve
Back-sealed construction:Features a longitudinal sealed seam along the back, creating a flat, space-efficient profile.
Integrated one-way degassing valve:Pre-installed on the front panel to release excess CO₂ from coffee beans while blocking oxygen and moisture ingress.
Heat-sealed top and bottom: Ensures a secure, leak-proof closure for long-term freshness retention.
Optional tear notch: Can be added to the top edge for tool-free opening.
Application:
Roasted coffee beans, various pet food, general dry food
MOQ: 50000 pcs
our Bags
Features:
Max freshness preservation: The 4-layer PET/AL/PA/PE structure + one-way valve blocks 100% of light, oxygen, and moisture, preventing coffee staling and flavor loss.
Food-safe contact: The inner PE layer is non-toxic, heat-sealable, and safe for direct contact with coffee beans.
Space-efficient design: The flat back-sealed profile reduces storage and shipping volume, lowering logistics costs.
Material & Barrier Performance
Aluminum foil & PA layers fully block light, oxygen and moisture, 100% avoid coffee oxidation, odor loss and rancidity
Inner PE layer non-toxic, odorless, safe for direct food contact, strong heat-sealing performance
Suitable for long-term storage of coffee and pet food
Key Functional Features
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Four‑layer full‑barrier protection PET/AL/PA/PE laminate blocks light, oxygen and moisture to retard coffee staling and flavor loss.
One‑way degassing valve solution Solve bag bulging / bursting risk for freshly roasted coffee beans. 3cc / 5cc optional valves for different roast levels.
Space‑saving flat back‑sealed shape Slim pouch increases carton filling quantity and reduces overall freight expense.
Food‑safe raw‑material Inner PE layer non‑toxic, food‑contact compliant for coffee beans & ground coffee.
Wide custom‑ability Custom size, composite formula, matte / glossy surface, tear‑notch, different‑flow degassing valves.
FAQ
Q: What is a back‑sealed coffee bag? |
A:The back‑sealed coffee bag features one vertical sealing seam at the back of pouch. It is flat‑shaped, space‑saving for storage and shipping, widely used for roasted coffee beans. We can fit one‑way degassing valve on front side.
Q: Why do I need a degassing valve for coffee bags?
A: Freshly roasted coffee beans keep releasing CO₂. The one‑way valve vents carbon dioxide out to prevent pouch bulging or bursting, while stopping oxygen and moisture from getting inside, protecting coffee aroma and extending shelf life.
Q: What material is used for this back‑sealed coffee pouch?
A:Standard structure: PET / AL / PA / PE 4‑layer food‑grade lamination. Aluminum foil brings excellent light‑oxygen‑moisture barrier. We also support custom material like kraft paper outer, matte PET, recyclable laminated films.
Q: Can I customize sizes and printing?
A: Yes. All dimensions, surface finish (matte /glossy), gravure printing, brand colors and tear notch are customizable. Send us your required size or artwork for quotation.
Q: Are the bags food‑contact safe?
A: All raw materials are food‑grade, comply with common international food contact requirements.
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