Sustainable Flat Bottom Coffee Bags With Valve
Flat bottom coffee bag in PLA/PBS compostable laminate with one-way valve, blocking oxygen and moisture while meeting compostability goals for roasters.
This flat bottom bag is built for coffee that needs to stand upright on a shelf and stay fresh after opening. The structure uses compostable PLA and PBS films, often laminated to kraft paper, with a thickness typically between 100 and 140 microns depending on the barrier layer. A one-way degassing valve releases carbon dioxide from roasted beans without letting oxygen in, and the flat base keeps the pack stable during filling and display.
Use it for whole bean or ground coffee, loose tea, and dry snacks. On a form-fill-seal line, the flat bottom format needs a filling machine that supports pre-made pouches or a pick-fill-seal system; the valve is usually inserted during bag making, not on the filling line. A zipper and tear notch help customers reseal the pack, while a window can show the product if the kraft paper layer is omitted in that area. Compostable PLA/PBS structures do not match the oxygen barrier of PET/AL/PE, so they suit shorter shelf lives or faster turnover. If you need twelve months or more of barrier protection, a foil laminate remains the better choice; if compostability is the priority, this format delivers it.
| Product Name | Compostable packaging bags |
|---|---|
| Bag type | All kinds |
| Color | Customizable |
| Material | NK,NKME,PLA,PBS,kraft paper |
| Application | Coffee,tea,snacks,etc |
| MOQ | From 100 pcs (digital printing) / 10,000 pcs (gravure) |
| Lead time | 10–15 working days after artwork approval |
Typical applications
- 250 g whole bean coffee
- 500 g ground coffee
- 100 g loose leaf tea
- 200 g dried fruit and nuts
- 150 g pet treats
- 300 g granola
Frequently asked
What barrier does the PLA/PBS laminate give compared to a foil structure?
PLA/PBS films provide a moderate moisture and oxygen barrier, enough for coffee consumed within a few weeks of opening. They do not match PET/AL/PE, which is why foil laminates are still used for long shelf-life or export shipments. If your roast is sold within eight to twelve weeks, the compostable structure is usually sufficient.
Can I run this flat bottom bag on my existing filling line?
Flat bottom pouches need either a pre-made pouch filling machine or a pick-fill-seal system with a flat bottom format. The valve is installed during bag making, so your filling line only handles filling and sealing. Check that your sealer can reach the top seam width and that the compostable film runs at your line speed without wrinkling.
What is the minimum order and lead time for a custom printed version?
Digital printing starts at 100 pouches with a lead time of 10-15 working days after artwork approval. Rotogravure printing requires 10,000 pouches or 200 kg of film and takes 20-25 working days. Free stock pouch samples are available; you only pay the courier.
Sustainable Flat Bottom Coffee Bags With Valve