Side gusset bags with valve

The exhaust valve on the coffee packaging bag can help create a vacuum like environment, which helps maintain the freshness of the coffee beans. The exhaust valve will release gas when the pressure inside the coffee bean packaging bag increases, thereby maintaining a low-pressure environment inside the bag. This helps to slow down the oxidation rate of coffee beans and extend their shelf life.
Once the coffee packaging bag is opened, the oxygen inside will begin to enter the bag. To maximize the freshness of coffee, it is recommended to avoid frequently opening and closing packaging bags. After each use of coffee beans, be sure to reseal the packaging bag as soon as possible to ensure that the exhaust valve continues to function.
In short, the exhaust valve on the coffee packaging bag is one of the key factors in maintaining the freshness and quality of coffee. By using the exhaust valve correctly, we can effectively reduce the rate of coffee oxidation, extend the shelf life, and maintain the taste and flavor of coffee.