What Kind of Coffee Packaging Protects the Aroma of the Coffee Beans?

August 22,2022

A good coffee bean often requires many time to test to reveal its desirable aroma. Choosing a good Coffee Packaging is a good beginning. When consumers get their coffee beans, they want them to be extremely fresh, no matter how long it takes to get to them.


This is where packaging comes into play. By using the right materials and features, the aroma of the coffee beans can be retained for long enough for the consumer to experience the flavour information listed on the bag.


Coffee Packaging


How does coffee packaging retain its aroma?


The first multi-layer paper coffee bag was manufactured by Thomas Royal in 1895. Multi-layering is a key part of effective packaging; one layer is not enough to protect the aroma of roasted coffee beans. To protect against moisture, oxygen, sunlight, heat and other factors, different materials are needed.


Aluminium is the most effective oxygen barrier compared to plastic, paper and other more porous alternatives. It also functions as a moisture barrier. However, the cost of mass-producing aluminium packaging layers is high and they are often replaced by aluminium foil.


Sealing the coffee bag


After choosing the correct packaging, the next step is to fill and seal the bag. If the coffee packaging is not properly sealed, it can lead to oxidation, resulting in rapid loss of aroma. A professional sealing machine is the way to go.


To ensure the freshness and convenience of the coffee beans, most coffee bean suppliers choose resealable coffee packaging. Reusable sealing materials available on the market include zips, rolled edge closures etc.


Deaeration & coffee aroma


The one-way degassing valve is a fairly new concept. Degassing is the process of releasing gas (i.e. CO2) from roasted coffee beans. Although the CO2 in roasted coffee will stop it from becoming flat and tasteless when brewed. However, too much CO2 can have a negative impact on extraction.


The one-way vent can be placed on almost any coffee bag construction. It usually consists of five parts: a lid, a flexible disc, a sticky layer, a polyethylene sheet and a paper filter.


Although the degassing process of the coffee beans is particularly noticeable in the first few days after roasting. However, in practice this process continues for some time. As CO2 builds up inside the package and pressure is applied to the venting valve, it releases CO2 without compromising the integrity of the packaged coffee or allowing oxygen to enter. This allows more aromatic compounds to be retained in the coffee and stops the rapid loss of flavour.




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