Coffee one-way exhaust valve principle is what| What is the role of coffee one-way exhaust valve?

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Coffee bags as the packaging bags of coffee beans and coffee powder, in many goods, customers not only pay attention to the brand awareness of coffee itself, but also the packaging design of coffee bags is also a very important factor affecting their purchase. More importantly, how can customers buy quality coffee without unpacking it? Very simple, that is to see if there is an one-way exhaust valve installed on the coffee bag!

Coffee exhaust valve principle:

"when the air pressure in the bag is greater than the set value of the single valve, the gas rushes open the valve and then releases the gas."

After roasting, coffee beans release a lot of gas, carbon dioxide and some baking exhaust gas! Coffee beans in the transport process with ordinary sealed packaging, is likely to blow up the bag, resulting in losses.

If it is not sealed, it may be affected by external air quality and may be contaminated by moisture and smell.

At this time, the individual exhaust valve plays a large role, isolating the external air, while the internal air pressure is high, which is automatically discharged.

However, this does not mean that the installation of a single exhaust valve on everything OK.

For ordinary Italian coffee beans, single exhaust is a safety guarantee, which protects more of the interests of merchants, but has no effect on improving the quality of coffee beans.

"in some cases, the single exhaust valve actually makes the coffee worse!"

Most of the beans commonly used are deeply baked in Italian style, but most of these beans have a high gas value and often have "inflated bags" but no exhaust when they are bought. As a result, the exhaust gas of the coffee remains in the bag all the time, and the coffee beans are under too much pressure, which makes the coffee oil very serious. The oil explodes, changing the properties of coffee beans. As soon as you open the beans, the pungent taste, that smell is still less good, not a good smell. I'm already hurt! I'm going to faint!

And this is why the coffee made from some beans and a new bag of beans tastes a little "heavy". Why it would be better to make a few more drinks. If you encounter such a situation, it is recommended to pour out the beans and wake up. If you leave it for a while, the coffee will taste much softer.

Coffee exhaust valve function:

1. Because roasted coffee beans produce carbon dioxide, this valve can discharge carbon dioxide out of the bag and prevent oxygen from outside the bag from entering the bag to oxidize the beans, thus ensuring the fresh quality of coffee and eliminating the risk of bulging or bursting of coffee bags.

2. In addition, by installing an air valve on the coffee bag, the customer can directly squeeze the bag when buying, and the aroma of the coffee can be directly from the bag so that the customer can smell it, so that the customer can better confirm the freshness of the coffee.

So coffee bag installation of one-way exhaust valve is very important, more accurately: professional coffee bags must have one-way exhaust valve!

Coffee this thing, many of the shelf life is very long, the appreciation period is actually not long, advocate that the coffee beans are used up during the appreciation period, there is no need to add additional individual exhaust valve.

As long as the coffee beans taste good, the excess gas automatically forms a protective layer during the taste period, and the exhaust gas can be discharged better, on the contrary, the shelf life is slightly shorter, and the general Italian beans are preserved for only 1 month.

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