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Tetra Pak has launched the Tetra Therm Aseptic VTIS, a direct heating unit aimed at UHT dairy production.

The company’s direct UHT technology allows instantaneous heating and cooling, minimising thermal impact on the product and enabling premium quality.

The unit gently treats heat-sensitive products such as milk, enriched milk, cream, ice-cream mixes, other dairy desserts and soy-milk products, while cutting operating costs by 15 per cent compared with the previous generation of direct UHT systems.

Tetra Pak said the Tetra Therm Aseptic VTIS unit: cuts product losses by up to 40 per cent compared with current industry standards; boosts running time up to 60 hours; reduces heat load to minimise impact on properties such as taste and colour; and offers high operational efficiency.

‘In developing the new Tetra Therm Aseptic VTIS unit, we have explored every stage and examined every component to deliver better ways of processing heat-sensitive premium dairy products,’ said David Pomeroy, food category director at Tetra Pak.

Tetra Therm Aseptic VTIS introduces a range of design features to drive efficiencies.

These include a double balance tank system, with one tank for product and one for water, making it possible to completely empty the main balance tank of water before filling it with product, reducing losses in the mix phase.

A flash cooling system combines a conically topped vessel and built-in spray condenser, rather than a conventional external condenser, to reduce product carryover during cooling to 0.01 per cent.

A new chamber design offers easier access for inspection, maintenance and service, and helps ensure uncompromising food safety.

The preheating now enables product/product regeneration using the heat-treated product, rather than hot water, to transfer heat to the cool inlet product.

This reduces steam consumption by five per cent compared with previous models and provides cost savings over time.

An improved steam injector and holding-cell design prevents hotspots and minimises fouling in the system.

This enables longer running times – up to 60 hours between cleanings, compared with 30 hours with previous-generation units.

Savings on cleaning and pre-sterilisation reduce production cost per unit.

Tetra Therm Aseptic VTIS solutions can also be configured to match each customer’s specifications for one or more individual products, as well as production requirements for versatile and efficient product-optimised operation.

Tetra Therm Aseptic VTIS is available as a separate unit or as part of a Tetra Lactenso Aseptic dairy production solution, with guaranteed performance on key indicators such as running time, energy consumption, product losses, cleaning times, pre-sterilisation time and more.

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