Vacuum packing machines

Vacuum Packaging Machine (Aquaculture / Fish Processing)

Definition:

A vacuum packaging machine is equipment designed to remove air from a package containing fish or aquaculture products and seal it hermetically. It is used to extend shelf life, preserve freshness, and facilitate storage and distribution.

General Operation:

1. Insertion: fish (whole, fillets, or portions) is placed inside a special vacuum bag.

2. Vacuuming:

   • The air is extracted, creating an oxygen-free atmosphere.

3. Sealing:

   • The bag is heat-sealed to prevent air and contaminants from entering.

4. Discharge: the vacuum-packed product is ready for labeling, freezing, storage, or shipment.

Common Machine Types (in aquaculture):

• Chamber vacuum machines: ideal for medium to high volume.

• External vacuum machines: for small or simple packages.

• Inline automatic machines: integrated into industrial production lines.

Typical Technical Features:

• Stainless steel construction, HACCP-compliant.

• Adjustable vacuum and sealing time.

• Compatible with standard vacuum or MAP packaging.

• Multiple bag capacity (in chamber-type models).

• Digital control panel with programmable settings.

Advantages:

• Extends shelf life (3–5 times longer).

• Prevents oxidation, dehydration, and microbial growth.

• Enhances visual appeal and commercial presentation.

• Reduces packaging volume for transport.

Disadvantages / Limitations:

• High initial cost (especially industrial models).

• Requires compatible barrier bags.

• Anaerobic bacteria risk if cold chain is broken.

• Requires frequent cleaning and strict hygiene.