Page 103 - AMEFT Journal 2021-4

humidity, as well as other elements of the environment, can damage the coffee beans. To keep it fresh, with its aroma, its flavor and all its qualities, it is absolutely essential to isolate it from these threats.
Locking the aroma
The solution developed by Volpak is based on the SP 170: a machine for pouch forming and filling, loved by a lot of customers for its durability and flexibility. In this specific instance, as is often the case, the company did not just provide a technologically advanced machine, but it also lever- aged its expertise to assist the cus- tomer throughout the project devel- opment stage. In particular, Volpak helped the client in the identification and deployment of the best degas- sing system, based on valve opera- tion.
The use of a degassing valve for cof- fee means that packaging can be car- ried out after roasting, thus saving storage time prior to packaging, and money in the medium term. The solu- tion created by Volpak is based on the development of a unique system for air outflow. It is actually a one-way valve,
(Source: Volpak)
PROCESSING & PACKAGING (Source: Volpak)
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which allows the exit of carbon diox- ide and prevents the entry of oxygen and moisture. The degassing, through the valve, is carried out by leveraging a physical principle: the pressure of the film inside the valve increases with the heat and the hot air exits through one of the sides of the coffee valve. Once the external pressure is balanced with the internal one, the valve remains closed.
Flexible and green oriented machines
In addition to this specific solution, Volpak offers a wide range of machines
and systems for coffee packaging that are highly efficient and extremely ad- vanced in terms of sustainability. Ma- chines such as the SP 170 can use fully sustainable packaging materials, such as PLA. Other units, such as SC+, can also use paper, offering a wide range of applications for this and other in- dustries. Volpak’s machines also boast a high level of flexibility, making them ideal for the secondary packaging in- side pouches of products such as non self-protected coffee capsules, a so- lution that can be ideal for industries such as hospitality.
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