How to Choose Coffee Bag Material

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Coffee loses freshness quickly once it is roasted. Oxygen, moisture and light are the main enemies of aroma, and roasted beans keep releasing carbon dioxide for weeks after roasting. A good coffee bag balances three goals: keeping oxygen and moisture out, letting built-up gas escape, and presenting your brand well on the shelf. This guide walks through the material structures, features and bag formats you can choose from.

1. Start with your barrier requirement

The barrier level you need depends on how long the coffee must stay fresh, how it is stored, and whether it is sold whole bean or ground. Higher barrier means better protection against oxygen and moisture, but usually adds cost and a foil or metallized layer.

• High barrier (foil lined): for specialty coffee, longer shelf life, humid climates or ground coffee where aroma fades faster.
• Standard barrier: for shorter shelf life, dry storage and budget-conscious packs.
• Light protection: foil or metallized layers block light; clear panels expose coffee to light and are usually limited to smaller packs or shorter turnover.

2. Common coffee bag material structures

The structures below are the combinations most often requested for coffee packaging. The exact film grade and thickness should be confirmed against your product, shelf life and performance testing.

Structure	Barrier	Best suited to
PET / ALU / PE	High, foil lined	Specialty whole bean, ground coffee, long shelf life, humid markets
PET / PE	Standard	Shorter shelf life, dry storage, value packs
Kraft / ALU / PE	High, paper exterior	Brands wanting a natural kraft look with internal foil protection
Kraft / PET / PE	Standard, paper exterior	Natural appearance with plastic barrier layers inside

For paper-style options, see our paper-plastic composite bags.

3. Degassing valve and zipper

Degassing valve

Freshly roasted beans release CO₂. A one-way valve lets this gas escape without letting oxygen back in, which prevents bags from swelling and protects aroma. Valves are commonly added to whole-bean packs; ground coffee releases gas more quickly and may need them depending on roast and packaging timing.

Resealable zipper

A zipper keeps coffee sealed between servings and is standard on most retail coffee pouches. It pairs well with a tear notch for clean opening.

4. Choose the bag format

The bag shape affects shelf display, capacity and how the product is used. Common coffee formats include:

• Coffee bags / stand-up pouches — the general-purpose retail pouch, with zipper and valve options.
• Flat bottom / eight-side seal bags — box-shaped, stand steadily and offer a large premium print area for specialty brands.
• Side gusset bags — side pleats give larger capacity, suited to bulk beans and larger packs.

5. Finishes and printing

Matte, glossy and kraft finishes change how the pack feels on the shelf. Matte and kraft are popular for specialty coffee, while glossy prints look brighter on value lines. For production, choose printing method by volume:

• Digital printing: shorter runs, multiple SKUs, trial designs and faster turnaround.
• Gravure printing: bulk repeat orders, larger volumes and consistent long-run quality.

More detail on both methods is on our manufacturing process page.

6. Information to prepare when requesting a quote

To get an accurate structure and quotation, it helps to share: coffee type (whole bean or ground), bean origin or roast, pack size/gram weight, expected shelf life, target market climate, required barrier features (valve, zipper, window, handle), finish preference and estimated order quantity. We can then recommend a suitable material structure and format rather than guessing.