Nothing Under Filling

In many markets, local legislation states that the net content of each and every container must never be less than the declared weight.

In these “nothing under” markets, Colby’s proven bulk fill and top-up system combines extreme accuracy with high throughputs to produce average savings of up to 5 per cent.

Rather than giving away large quantities of powder to reduce underweight rejects to a manageable level, the Colby system deliberately instructs the bulk filler to underfill all cans. Each can is then weighed again, and the amount required to bring the can up to the specified weight is passed forward to the top-up system.

Average Weight Filling

In some markets, it is permissible to underfill a proportion of cans, provided that the complete batch has an average weight which is greater than or equal to the declared weight.

In these markets, Colby’s remarkable dynamic targeting feedback system allows clients filling to average weight legislation to reduce give-away levels to as low as 0.01 per cent. The filling machine target weight is adjusted within the target range identified in the adjacent graph.

Regardless of fluctuations in the bulk density of the supply powder, the filling system calculates a running average of all containers filled, and adjusts the dynamic target to maintain the average at (or slightly over) the declared weight at all times.