coffee bags 3

Coffee bean bags with valve are blended with materials including double-oriented polypropylene (BOPP) and linear low density polyethylene (LLDPE). The BOPP is the outer material for the coffee bean bags. The outer material provides an excellent barrier to light and oxygen and can keep the beans fresh for longer. LLDPE is the lining of the bag, providing a food safe surface and allowing the bag to be heat sealed.

What is the function of one-way degassing valve?

The degassing valve removes CO 2 naturally released from freshly roasted coffee beans. If there is no valve, the release of CO 2 gas may break the coffee bag. The valve allows CO 2 to escape while preventing air from re-entering the bag, ensuring freshness.

According to research on how roasting conditions affect the pore structure of coffee beans, the higher the roasting temperature, the more porous the beans become -- making them more likely to absorb moisture and unpleasant odors.

To prevent this, your packaging should include barriers to moisture, odors, direct light, and oxygen, while allowing carbon dioxide (CO2) to escape. Although the material you choose for the outer layer is a personal choice and will depend on your printing preferences, market demand and required wear resistance, special attention should be paid to the inner layer as it comes in direct contact with the coffee bean.

Feature :
1). KEEP IT FRESH
2). DURABILITY
3). NICE PRINTING
4).100% VIRGIN MATERIAL
5). WITH VALVE