Bottle washing machines: Filtration of caustic

In the beverage industry, glass and PET bottles have a broad acceptance for a long time. Breweries, mineral springs, soft drink manufacturers or bottlers, that work with deposit systems, use bottle washing machines to clean the glass or PET bottles. Depending on the type of bottle washing machine (single- or double-end), the bottles are first immersed in one or more alkaline baths and subsequently the inside of the bottles is cleaned with the help of spray nozzles.

BOLLFILTER as partial flow filter and protection of components:

  • Filtration of the main caustic solution

Paper fibers, glue and adhesives, as well as lacquers, cause most problems in the sodium hydroxide solution. This is where the BOLLFILTER Automatic type 6.64 BWM is used in side stream filtration in order to continuously filter the caustic solution since the conventional sedimentation is partially ineffective.

The aim is to remove contamination from the caustic solution as early as possible and to carry as little residue as possible into the subsequent caustic solution baths or into the post-treatment zones.

  • Protection of the heat exchanger

The BOLLFILTER automatic aquaBoll® / type 6.18 BWM protects the heat exchanger against loss of efficiency and waste of resources.

  • Direct protection of spray nozzles

The BOLLFILTER automatic aquaBoll®  / type 6.18 BWM increases the cleaning quality for the bottles and avoids the blocking of the spray bars.

Your benefits:

  • Increases the service life of the caustic solution - reliable dirt removal
  • Extending the production time through fewer machine stops and unplanned failures
  • Improved cleaning results
  • Considerably better overall condition of the machine
  • No deposits in the flowless zones
  • Reduced maintenance
  • BOLL & KIRCH supports a sustainable application here: Reuse of bottles



ABInBev China

ABInBev »

The BOLLFILTER filtration of caustic soda solution of bottle washing machines at ABInBEV China has doubled the caustic liquid’s working life and increased the cleaning results.

Preview Image: Dargun Brewery

Dargun Brewery »

The use of the BOLLFILTER for filtering the main caustic solution helps to reduce the contamination level in the bottle washing machine.

Preview Image: KRONES AG


The company KRONES found in BOLLFILTER a filtration solution to efficiently reduce  the contamination level in the bottle washing machine main caustic bath.

Product Videos


    Filtration specialist for the beverage industry ▶ 6.64 BWM/6.60 BWM caustic soda solution filter ✓ 6.18 BWM spray nozzle protection ✓ 6.03 AOT disinfection/filtration
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    BOLLFILTER Automatic Type 6.64
    Individual platform concept ✓ Minimal operating costs ✓ Adaptive filtration configurations ✓ Multi-part housing construction ✓ Various housing materials ▶ Find out more!

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