Bottle washing machines: Filtration of caustic solution

Glass and PET bottles have been widely used in the beverage industry for many years. Breweries, mineral springs, producers of soft drinks or bottlers who employ deposit systems use bottle washing systems to clean glass or PET bottles.

Depending on the type of bottle washing machine (one or two-ended version), the bottles are first immersed in one or more caustic baths. The inside of the bottles is then cleaned using spray nozzles. The outside of the bottles is rinsed with surge devices.

Filtration of primary or secondary caustic solutions

Paper fibers, adhesives and varnishes cause most of the problems in caustic soda. To solve this problem, the BOLLFILTER Automatic Type 6.64 BWM or BOLL FineFilterUnit is used in the filtration of the secondary flow to continuously filter the caustic solution. Continuous caustic filtration effectively removes the dirt load and replaces the conventional and sometimes ineffective sedimentation.

The aim is to remove impurifications from the caustic solution at an early stage to ensure that as little residue as possible reaches the subsequent caustic baths or post-treatment areas via carry-over in the bottle washer by the bottle or the transport system.

BOLLFILTER as particle filter and component protection

The BOLLFILTER Automatik aquaBoll®/ Type 6.18 BWM protects the components such as the heat exchanger against loss of performance and waste of resources. The particle filter also increases the cleaning quality of the bottles and prevents the spray bars from clogging.

Your benefits:

Increase in production times due to fewer machine stops
Significant improvement in the general machine condition
No deposits in flow-free areas
Minimal maintenance
Increasing the service life of the cleaning lye

BOLLFILTER membrane systems for reducing microparticles

The BOLL FineFilterUnit membrane system continuously separates all particles in the micrometre range (µm) and beyond down to the nanometre range (nm) through its filtration performance and thus feeds a microparticle-free and turbidity-free filtrate to the bottle cleaning solution.

The use of a BOLLFILTER membrane filtration system is an additional and advanced measure for reducing the dirt load in the cleaning solution by means of fine filtration. This efficiently reduces the carry-over of microparticles into the post-treatment zones of the bottle washing machine and has a positive effect on the result of the cleaned bottles.

Your benefits:

Increased service life of the caustic solution - reliable removal of impurifications
Significant reduction in overall impurification
Hygienically better condition of the bottle washing machine
Reduction of the carry-over of microparticles / microplastics into the post-treatment zones
Increase in cleaning quality due to more effective caustic
Higher flexibility due to more production time - no sedimentation required
Overall no increased concentrate or additive consumption realistic