- Origin: US
It is essential for us to choose the good function degassing valves to match the good quality foil packages. That seems a small part compared with the expensive delicate coffee, but a basic request of the vast consumers market.
In fact, you can not judge a valve just by looking at it. Some valves may look the same, but not all function the same. You must test the amount of oxygen in a filled and sealed coffee package in order to test the valve function.
A study done by an independent laboratory found that some degassing valves on the market allow oxygen to penetrate into the bags. They are NOT true one-way degassing valves.
It's our pleasure to introduce the functional valves to you. And welcome to call us for more details.
-Coffee is a High Quality beverage with delicate flavors. It must be protected from oxygen and moisture quickly after roasting in order to stay fresh for more than a few days.
-Coffee packaging requires a high barrier, low oxygen transmission package with heat seals that are 100% sealed. Multi-Layer film laminations with aluminum foil work well.
-Roasted Coffee also gives off high volumes of CO2 Gas for 1-2 weeks after roasting.
/Question: How do you package coffee in a completely sealed, air-tight bag, yet allow the CO2 gas to escape?
/ANSWER-Use a Functional One-Way Degassing Valve in your package.
-The quality of the package and a one-way degassing valve is measured by its ability to maintain a low amount of oxygen in the bags-less than 5% is desirable, less than 3% is preferred.