A Small Guard To Protect The Freshness Of Coffee

How to keep coffee fresh and aroma by coffee valve?

Have you ever noticed the small valve on the coffee packaging? It is not a decoration, but a small guard to 

protect the freshness of coffee.

After roasting, coffee beans will continue to release carbon dioxide. If there is no valve, the packaging bag

will swell like a balloon and may even burst. 

The function of the valve is to allow these gases to be discharged while preventing the outside air from 

entering to prevent the coffee from getting damp and oxidized.

Although the valve from Classic Packaging is small, its structure is very delicate. It is usually made

of multiple layers of materials, which can ensure one-way exhaust and block oxygen and moisture.

So, next time you buy coffee, don't forget to check whether the valve is intact. This inconspicuous little

device is the key to ensuring the aroma and flavor of coffee!