New Double-Spout Bagging System delivered to Bonilait Protéines for Whey Powders

We have recently delivered and installed a new bagging system for Bonilait Protéines company in Chasseneuil du Poitou at Poitiers, France. Bonilait is a French company specialising in the production and treatment of milk products, especially whey powders. Each year a billion litres of whey are processed.

For this specific application Chronos Richardson developed a new doublespout open-mouth bagging system based on bottom-up-filling technology type PBS 502-BFW. The field-proven bottom-up filling technology allows for the reliable, dust-proof bagging of high fatty powdery bulk materials.

To meet the required output of 450 bags per hour Chronos Richardson has built the system with a double spout design. The central parts of the system are two bag spouts each with an axial movable vertical filling screw and dosing cone. The bag is lowered during the filling process according to the filling level so that the distance between dosing cone and product level is constantly kept to a minimum, thus minimising the possibility of dust development during filling.

A diverse range of re-fatted whey powders with a bulk density of 0.40 and 0.60 kg/dm³ are bagged into open cross-bottom bags made from multiply paper with a PE-inner-liner. The filling weights are 10 and 25kg for each bag. The full scope of supply includes a pneumatic packing device, two deaeration systems with air evacuation probes as well as a downstream secondary de-aeration device to remove any air from the top of the bag. After the filling process the bag is closed with an existing bag closing device and transferred to a palletiser, provided by the customer.

The PBS 502-BFW series bagging systems fulfils the safety and hygienic requirements for foodstuff equipments according to DIN EN 1672, part 1 and 2.

In addition to the hygiene, food conformity and dust-proof filling requirements of the whey powder packing; and the output of 450 bags per hour, the tight space conditions on site were particularly challenging. However the CHRONOS designing engineers provided a good solution.