CLOSE ONE-WAY VALVE FOR KRAFT PAPER COFFEE BAG

CLOSE ONE-WAY VALVE FOR KRAFT PAPER COFFEE BAG

    Currently in the retail market, we will rarely see coffee packaging with one-way valves, except for some high-end coffee lines.

    So what is a one-way valve? This is a type of Valve that is produced and packed directly into kraft paper coffee bags or other types of packaging. It helps release CO2 gas, protects coffee from direct contact with outside air, and keeps odors away. of coffee is preserved longer.

    Why must one-way valves be used when packing coffee kraft paper bags for export?

    One-way valves are the optimal solution for high-end coffee packaging: quality coffee is a delicate drink that needs to ensure the pure flavor of each coffee bean. But after roasting, especially in the first 2 weeks, a lot of natural carbon dioxide is produced. This is what causes coffee to quickly oxidize, leading to a decline in quality (smell & taste) and also causes the packaging to burst open -> the one-way valve pushes this amount of CO2 out of the bag. without worrying about air intrusion from outside.

     What are the applications of one-way valves in packaging industries?

     In addition, one-way valves are also suitable for fermented product storage bags, pet food bags, fertilizer bags or exhaust gas packaging applications... that require flexible packaging and need to release air from the inside.

STRUCTURE OF ONE-WAY VALVE:

     Roasted coffee packaging needs to be protected against loss of aroma as well as exposure to oxygen, steam and light. On the other hand, the gas created by roasted and ground coffee beans must be allowed to escape the packaging without allowing oxygen or water vapor to enter. The valves are supplied with filter paper (specified by German glue company Tesa). Filter paper has the effect of ventilation and prevents small particles and powders from entering the valve and clogging the one-way valve.

     Currently, for high-end coffee, or pure coffee or coffee for export, we recommend that manufacturers use one-way valves to close packaging to ensure the coffee is protected. Longer storage for at least 12 months. At the same time, closing the one-way valve will help you confirm the quality of coffee and brand in the market. This is considered one of the barriers that prevents dirty coffee and cheap coffee from having a place. Stand and clean up the Vietnamese coffee industry.

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