What Is The Valve On Coffee Bags?

Coffee is very common in life. When buying coffee, you may notice a round valve on the coffee bag and wonder what they are used for.

Coffee beans keep giving out large quantities of carbon dioxide for many hours after they have been roasted. Due to this off-gassing process, coffee beans and powder are stored in pouches need valves. The valve is one way degassing. It can let carbon dioxide go out the bags, and oxygen can't enter into the bag.

Coffee bag with valve keeps your coffee beans or grind fresh and free from any bacteria.

In the meanwhile, having this valve opening offsets any off-gassing concerns. The pressure within the bag is continuously building because of the gases within. Without the valves, the bag could begin to leak or break open. The valve allows for the gas to leave the bag, which maintains the bags appearance and prevents loss of product, all while ensuring a longer shelf life.

We BioPack is specialized in coffee packaging bags for more than 20 years. Our main products are customized according to your required design. And our coffee bags are exported to many countries, US, Europe, Australia, ect.

We also have coffee bag with valve and zipper in stock, low MOQ.

Please feel free to contact us when you need the coffee bag and other food packaging products.