Gas Flush Function – What is the Gas Flush Function? Is It Suitable for My Products?

Have you heard of a function called Gas Flush when purchasing a vacuum packaging machine? Have you seen the words “Gas time” on the panel of a vacuum packaging machine but do not know how to use it? What exactly is this function, and is it suitable for your products? This article will give you the answers.

Working Principle and Functions of Gas Flush

Simply put, the Gas Flush function works as follows: after the machine completes vacuum extraction, a certain amount of inert gas (usually CO₂, N₂ and other gases) is injected into the product packaging bag through the gas‑filling port to replace the residual air inside the bag, and then the sealing process is performed. This keeps finished packages round and plump in appearance.

Compared with ordinary vacuum packaging, enabling the Gas Flush function offers the following main advantages:

1. Through gas replacement, the packaging bag is filled with inert gas to better preserve products against spoilage, slow down oxidation and discoloration, and effectively extend the shelf‑life.
2. With a certain volume of gas inside, the package creates cushioning space, which effectively prevents damage caused by bumps and squeezing during transportation and sales.
3. For products such as bread, round and plump packaging bags deliver a more attractive overall presentation.

Products Suitable for th Gas Flush Function

1. Soft products such as bread, biscuits, cheese, to better resist squeezing while reducing oxygen levels.
2. Puffed foods, nuts and similar items, to prevent products from being crushed by vacuum pressure.
3. Selected meat and seafood items, to slow oxidation and extend shelf‑life.
4. Certain medical supplies, pharmaceuticals and laboratory materials, for oxygen‑sensitive materials to reduce risks from oxygen exposure.

How to Use the Gas Flush Function

If you need this function or are unsure whether it fits your products, please communicate your requirements with sales staff before purchasing the machine（CONTACT ME）. As an experienced and professional original manufacturer of vacuum packaging machines, we will install dedicated gas‑filling ports and pipelines according to your needs. For operation, you only need to connect a tank filled with inert gas.

During use, insert the gas‑filling port into the product packaging bag, set the gas‑filling time, and close the vacuum lid. The machine will automatically run the full working sequence. You can adjust the volume of gas injected into the bag by modifying the gas‑filling time.

Vacuum packaging machines come with a wide range of functions. Feel free to CONTACT ME if you wish to learn more.