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Alfa Laval: Bag-in-box fillers with servomotors

In the compact Astepo High Speed Low Acid bag-in-box filler (HS-LA), filling cycles are shortened by the use of electric servomotors controlling the aseptic filling head and bag feeder.
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Bags and fitment tooling can be changed quickly and easily and the machine can fill a wide range of bags and products using any commercial 1” spout type.

High reliability for low acid applications
Designed to meet market demand for a faster, even more reliable machine, the Alfa Laval Astepo HS-LA linear bag-in-box filler is suitable for high acid (pH <4.5) and low acid products (pH >4.5), such as juices, beverages, concentrated juices, purees, and dairy products like soft ice mix and flavoured UHT milk. Specially developed for the sterile filling of aseptic bags, from 3 to 25 litres (1/2-6 gallons) the filler is fully automatic in operation and gives a continuous filling process with a high level of reliability.

Jacopo Montali, Product Manager Bag-in-Box Fillers, Alfa Laval: “Alfa Laval has always been dedicated to innovation and this new Astepo machine represents yet another milestone in the aseptic filling of bags. Thanks to the implementation of brushless electric servo motor technology in the new filler, we are able to control and adjust all the movements of the aseptic filling and the bag feeder with extreme accuracy and smoothness of motion. This is what gives the machine the capability to fill up to 500 bags per hour, based on 10 litre bags. It also enables changeover of caps and volume to be achieved in minimum time compared to any other machine currently available on the market.”

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The bags are delivered pre-irradiated with gamma rays, with a wide variety of commercial caps of the flat rigid type, or dispensing caps, both thermal and non thermal resistant, with high or low fitments.

Sterilization fully monitored
In the Astepo HS-LA filler the parts in contact with the product are in stainless steel AISI 316. The filling valve has EHDGE certification and the machine is FDA compliant (USA). The filling head and all food contact surfaces are sterilized by steam, and the machine is fully C.I.P. cleanable.

The caps are sterilized in the sterilizing tunnel with a monitored jet of vaporized hydrogen peroxide before being introduced into the filling head. All moving parts are protected by monitored steam barriers and the aseptic filling head is maintained sterile at a controlled temperature by overpressure of air. Integrated in the machine skid, the air group comprises two sterile micro filters and food grade electric heaters for heating the air that goes into the chamber and the tunnel at a monitored flow and temperature.

The Astepo HS-LA filler is managed by a PLC with an operator interface terminal with a touch screen. It is equipped with autodiagnostics for product traceability and a fail-safe system for continuous control of the sterile conditions of the plant.
 

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