How does a vacuum machine work?

Do you want to put an end to food waste and keep your fresh produce 5 to 10 times longer? Have you heard of "vacuum sealing" but how these machines work remains a mystery?

You're in the right place. In this article, we break down the vacuum sealing mechanism, its scientific benefits for your food, and most importantly, we help you choose between the different types of machines (external suction or chamber).

How does a vacuum sealer work?

The principle is simple but remarkably effective: remove the oxygen . Air is the main enemy of your food because it promotes oxidation (browning of fruit, rancidity of fats) and the growth of aerobic bacteria.

A vacuum sealing machine consists of two key elements: a pump (to suck out the air) and a sealing bar (to seal the bag airtight).

STEP 1: The Aspiration (The Void)

When you start the cycle, the vacuum pump activates. It removes the air from the bag. The pressure inside drops drastically (this is the vacuum). The bag then adheres to the food like a second skin.

Note: Depending on the power of the machine, between 90% and 99.9% of the air is removed.

STEP 2: Welding (Sealing)

Once the vacuum level is reached, the machine activates its sealing bar. A heating element heats up for a few seconds to melt the two layers of plastic in the bag and fuse them together. Air can no longer enter: your food is protected.

Start with the best value for money

For versatile use at home, our 475W dual-pump model offers professional power in a compact size.

See the ideal machine

The 4 major advantages of vacuum sealing:

• XXL storage: Keep your meats and fish fresh for up to 8 days in the fridge (compared to 2 days) and your frozen products for up to 2 years without frost.
• Unaltered flavors: Without oxidation, the tastes and vitamins do not deteriorate.
• Perfect hygiene: No cross-contamination between foods in the fridge.
• Space saving: Stacked bags take up much less space than boxes.

Which machine should you choose based on your needs?

There are two main types of machines. Your choice depends on what you intend to package.

1. The Outdoor Vacuum Cleaner (For Home and Professional Use)

The bag remains outside the machine. This is the most common, compact, and affordable model. It uses embossed bags .

• Ideal for: Solid foods (meat, cheese, vegetables, dry).
• The right choice: Our 30cm / 475W (Standard) or 40cm / 550W (Heavy Duty) model.

2. The Bell Machine (For Professionals and Industry)

The entire bag is placed IN a tank (the bell). The machine creates a vacuum in the entire tank.

• Ideal for: LIQUIDS (sauces, soups) and very large volumes.
• The right choice: Our professional bell-shaped washing machine models.

In summary: If you are a beginner or have standard usage, a good quality external suction machine (with a double pump) will be your best ally on a daily basis!