Compostable Coffee Pouches With Valve

Have you ever observed the bags of coffee beans? What are the effects of packaging bags of different materials on the flavor of coffee beans? Today, let’s talk about the little secrets hidden in the packaging bags of coffee beans. The packaging of coffee beans is not only visually pleasing, but also functional. High-quality packaging can effectively block oxygen and slow down the speed of coffee bean flavor deterioration.

Most coffee bean bags will have a round, button-like element on it. Squeeze the bag, and the aroma of the coffee will be drilled through the small hole above the "button". This "button" shaped small component is called a "one-way exhaust valve".

Freshly roasted coffee beans gradually release carbon dioxide, and the darker the roast, the more carbon dioxide gas is emitted.

The one-way exhaust valve has three functions: 1. It helps the coffee beans to be exhausted, and at the same time prevents the oxidation of the coffee beans caused by the air backflow. 2. In the process of transportation, avoid or reduce the risk of packaging damage caused by the expansion of the bag due to the exhaust of the coffee beans. Third, for some consumers who like to smell the aroma, they can experience the fascinating aroma of coffee beans in advance by squeezing the bean bag.

Dark roasted coffee beans emit a lot of carbon dioxide gas, so a one-way exhaust valve is required to help the gas escape. For some lightly roasted coffee beans, carbon dioxide emissions are not as active, and whether there is a one-way exhaust valve is not so important. This is why, when making pour-over coffee, light roasts are less "bulky" than dark roasted beans.

In addition to the one-way exhaust valve, another criterion for measuring the package is the interior material. High-quality coffee packaging bags, the inner layer is usually aluminum foil. Aluminum foil can better block oxygen, sunlight and moisture outside, creating a dark environment for coffee beans.