With the rising demand for specialty coffee, coffee sellers and roasters are paying increasing attention to the quality of their packaging. Proper sealing not just maintains coffee freshness, but also supports brand image. This article will introduce the method of sealing coffee bags and provide some solutions from Lebei, a professional flexible packaging company.
Why is sealing important for coffee bags?
Preserving the scent of coffee beans
Coffee beans become stale and lose their quality once exposed to air for a long time. Well-sealed coffee bags prevent the loss of aroma.
Protection against moisture and contamination
Quality seals create a strong barrier against moisture and dust, preserving coffee’s hygienic quality.
Branding Presentation
Well-sealed coffee bags show professionalism and high-class presentation to the consumer at first sight.
Popular Methods of Sealing Coffee Bags
Heat Sealing Machine
To use:
- Adjust the appropriate temperature (normally 160°C–200°C, depending on the material)
- Place the coffee bag with the opening facing the center of the sealer.
- Press for 2–3 seconds and allow it to cool down.
Zipper Sealing Machine
To use:
- Be used on coffee bags with zippers
- Advantages: Easy for repeated opening and closing by the consumer.
- Note: Always keep the zipper well-fastened when closing to prevent air leakage.
Sealing with Sealing Clips or Stickers
Practical for: Coffee bags for temporary storage or short-term closure
- Advantages: No machinery used, cost-effective
- Disadvantages: Less airtightness, suitable for small packets or for everyday use.
Key Details for Sealing
- Ensure the bag opening is equal. If the coffee bag opening is folded or not even, it may result in air leakage.
- Avoid high temperatures that can damage the material. Coffee bags of different materials are proof against different heat levels.
- Use a one-way degassing valve. If dealing with newly roasted coffee beans, use coffee bags with a degassing valve to prevent internal air accumulation and bulging.
- Test the seal from time to time. Vacuum or pressure testing for mass production of coffee can be used to maintain coffee bag seal quality.
The Importance of High-Quality Coffee Bags
Success of the seal, as well as handling, also relies on packaging quality. High-quality coffee bags typically possess:
- High barrier properties (aluminum foil or composite film structure)
- Smooth, secure heat-sealed edges
- Easy-to-use design (zippers, degassing valves, etc.)
Lebei Offers Professional Coffee Bag Packaging Solutions
Since 1995, Lebei has specialized in the production of flexible packaging, including wholesale and bespoke coffee bag services:
- Ready-to-stock wholesale: All sizes and materials of coffee bags are available for quick shipping
- Customized packaging: Choices of bag shape, printing style, and details (including zippers and degassing valves) can be customized
- Professional quality: Made with food-grade materials and state-of-the-art heat-sealing technology, every coffee bag is assured to be airtight and secure.
- Global service: Offering stable supply and technical support to overseas customers.
If you’re searching for premium coffee bags or a reliable partner, Lebei is your best bet!
