Foam cleaning can be an ideal way of ensuring good hygiene in the bottling plant. The advantages of foam are numerous: increased contact time maximises active ingredients’ effectiveness; the foam is a visual marker for the operator; the expanded foam reduces water and chemical usage; cleaning of large or awkward surfaces is made easier and quicker and therefore downtime for cleaning may be reduced.
Two pieces of equipment are described here which seem ideally suited to the bottling plant environment. Neither of them requires compressed air and one of them does not need a water line.
The first is a pump-up foam unit. The dual tube technology draws the chemical and compressed air from the tank into separate tubes creating thick foam when mixed at the trigger foam wand. Flow in the air tube is controlled by a needle valve giving the user the ability to control the consistency of the foam.
The second unit is a spray and foam dispenser which is wall mounted. This enables the operator to generate a cleaning foam, followed by a water rinse and finally a terminal disinfection, all from one piece of equipment. The only requirement is a water line.
A single control knob determines water flow and chemical selection, giving accurate dilutions. A built in foam wand hanger prevents foam wand loss or damage.
The ideal foaming chemical is a chlorinated foamer useful for general disinfection and removing mould growth. An acidic foaming product is ideal for descaling or brightening stainless steel. Recommended disinfectants for spray application are peracetic acid (for water contact surfaces) and quaternary ammonium solutions for floors and walls.