Functions and Roles of Coffee Valve Bags

‌Maintaining Air Pressure Balance‌: The air valve of the coffee valve bag can discharge carbon dioxide and other volatile gases in the bag to prevent the internal air pressure from being too high, thereby preventing oxygen from entering the bag and causing the coffee to deteriorate. ‌Prevent Oxygen Intrusion‌: The design of the air valve ensures that only gas flows out in one direction, preventing external oxygen from entering the bag, thereby delaying the oxidation process of the coffee and maintaining its freshness and original flavor. ‌Regulating Humidity‌: While discharging carbon dioxide, the air valve can also discharge a certain amount of water vapor to help regulate the humidity environment in the bag and maintain the long-term preservation of coffee beans. ‌ ‌Convenient for customers to judge freshness‌: Customers can squeeze the bag directly when purchasing, and the aroma of coffee will emanate from the valve to help customers judge the freshness of the coffee‌.

Historical background and technical details

The design of the coffee valve bag is inspired by the one-way exhaust valve invented by the Italian company Goglio S.p.A in the 1960s. This design can not only effectively remove carbon dioxide and other volatile gases, but also prevent oxygen from entering, maintaining the freshness and original flavor of the coffee‌.

This design is called a "one-way exhaust valve" or "freshness valve", also known as an "aroma valve" or "coffee valve".

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