Bosch cuts valve size to beat coffee bag bloat, drive cost savings

03-Nov-2014 - Last updated on 20-Dec-2021 at 09:35 GMT

Bosch's V55 external coffee protection valve

Bosch has launched a smaller-sized version of its external valve to protect coffee in soft bags or cans and cut material, storage and transport costs.

Speaking to BeverageDaily.com at Pack Expo 2014 where the valve was launched, Julian Kaetzlmeier from Bosch told BeverageDaily.com that the new valve gave material and logistics savings, allowed for faster changeovers and took up less storage space.

Stops coffee bag bloat…or even bursting!

Coffee manufacturers can apply the new valves to bags at up to 150 valves per minute; the valves permit the release of CO2 without allowing oxygen to enter – thus preserving coffee quality but preventing bags from bloating and even bursting.

According to Bosch, 1000g of roasted coffee beans emit around six liters of CO2 within five weeks; valves to allow the gas out the pack (both internal and external) are now an important quality cue for consumers.

Bosch claims the small size of the valve (12.5mm x 12.5mm x 0.35mm) allows it to double the number of valves supplied per reel – 12,000 compared to 6,000 with previous valve generations – thus reducing storage space needs and transport costs.

V55 valve uses 62% less paper film

Operators do not have to change reels as often as before, while the compact design of the V55 valves requires 62% less paper film.

Bosch’s valve reels are designed to work with its valve applicator that is designed for use with its vertical baggers and package makers, but can also be retrofitted to third-party packaging machine.

The company’s CVA V55 valve applicator has sensors to detect that bag perforations are correct, that amounts of fluid in the valve are accurate and that the valve is precisely placed even at high speeds.