Jackstone Nitrogen Mini Crust Freezer

• Crust freezing of delicate products prior to further processing or full freezing.
• Hardening the surface of products to prevent damage in subsequent handling or freezing stages.
• Rapid surface freezing of sticky or fragile items before bulk freezing in a spiral freezer.
• Pre-freezing of products to reduce moisture loss and improve final product quality.

Typical throughput

Varies significantly based on product type, thickness, and desired crust depth. These units are designed for rapid surface freezing rather than full freezing.

Power supply

Typically requires a standard industrial three-phase electrical supply for controls and ancillary components, alongside a liquid nitrogen supply.

Footprint

Compact for this class of equipment, designed to be integrated into existing lines. Total length for units of this type commonly ranges from 2 to 5 metres.

Belt width

Usable belt widths commonly found on units of this type range from 40cm to 80cm, suitable for various product sizes.

Construction material

Primarily stainless steel for hygiene and durability in food processing environments, particularly for contact surfaces and the main enclosure.

Refrigerant

Utilises liquid nitrogen (LN2) as the primary refrigerant for rapid crust freezing.

Temperature range

Operating temperatures for the freezing medium are typically extremely low, often below -100°C, for instantaneous surface freezing.

• What is a crust freezer used for?

  A crust freezer rapidly freezes the outer surface of a product, forming a 'crust'. This helps to stabilise delicate items, prevent sticking, and reduce dehydration before full freezing or further processing.

• What are the benefits of using liquid nitrogen for freezing?

• Can this unit fully freeze products?

• What products are suitable for a nitrogen mini crust freezer?

• What are the typical running costs associated with a nitrogen freezer?

• Is special ventilation required for a nitrogen freezer?

IQF systems are highly regarded in food processing for their ability to freeze individual products uniformly whilst maintaining quality and texture. Buyers typically value machines with reliable refrigeration components and consistent belt speed control. When purchasing used equipment, inspecting freezing chamber condition, verifying temperature consistency, and checking refrigerant integrity are essential. Industry users appreciate their efficiency in handling delicate items and relatively low maintenance demands compared to alternative freezing methods.

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