Cryovac - Shrink Tunnel

• Used for creating a tight, protective seal around food products, extending shelf life and improving presentation.
• Commonly employed in bakeries for packaging bread, pastries, and other baked goods.
• Utilised in meat and poultry processing for hygienic and secure packaging of fresh and frozen items.
• Applied in dairy operations for shrink-wrapping cheese blocks, yoghurts, and other dairy products.
• Suitable for packaging ready meals and convenience foods, ensuring product integrity during transport and display.

Typical throughput

For this class of equipment, throughput commonly ranges from 10 to 60 packs per minute, depending on product size and film type.

Power supply

Units of this type typically require a 3-phase electrical supply, commonly 400V, 50Hz, with varying power consumption based on tunnel size and heating elements.

Tunnel dimensions

The internal tunnel dimensions commonly vary, with typical aperture widths from 300mm to 600mm and heights from 150mm to 400mm.

Film compatibility

Shrink tunnels are typically compatible with various shrink films, including PVC, polyolefin, and polyethylene, depending on the heating system and film gauge.

Heating method

Most units utilise electric heating elements, often with adjustable temperature controls for optimal shrink results.

Conveyor type

Commonly features a mesh belt or roller conveyor system, with adjustable speed controls to suit different product types and film characteristics.

• What is a shrink tunnel used for?

  A shrink tunnel applies heat to shrink film wrapped around a product, creating a tight, protective seal. This is commonly used for packaging food items to enhance hygiene, extend shelf life, and improve presentation.

• What kind of products can be packaged with a shrink tunnel?

• What type of film does a shrink tunnel use?

• What are the typical power requirements for a shrink tunnel?

• Is this unit suitable for continuous operation?

• What maintenance is typically required for a shrink tunnel?

Used sealing machines are generally valued for their durability and long operational life. Buyers typically prioritize machines with clear maintenance histories and minimal wear on sealing components. Key considerations include film compatibility, seal quality consistency, and ease of adjustment. Reputable models tend to retain functionality well across multiple applications. Industry sentiment suggests these machines offer strong value when sourced from reliable vendors, though operators should verify calibration settings and test seal integrity before full production use.

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