In practice, both fixed-weight and catch-weight jobs should be programmable in a processor's recipe. The multi-job software of Marel Multihead Weighers manages both calculation challenges perfectly.
Fixed weight batching means working with a target weight for a batch, e.g. 400 g (14.1oz). Everything above the total, pre-calculated weight is considered as give-away.
Most of the large retail and fast food chains demand fixed-weight batched products. Marel Multihead Weighers are ideal for producing these with absolute minimum give-away.
What is catch-weight?
Consumers around the world want to be able to choose from packs with various weights from e.g. 500 up to 900 g (17.6oz to 31.7oz). Small families require packs with just two pieces, while larger families might require four or more pieces. This variation on the supermarket shelf is called catch-weight.
When a supermarket asks a poultry processor for catch weight trays ranging from 500 g to 900 g it will not know in advance how these weights will be distributed. It will also not know what the day’s demand from families living in its area will be.
Having taken delivery of this order, the supermarket will risk being left with unnecessary stock at the end of the day, because catch-weight trays didn't match the consumers' needs. It is, therefore, a good idea for the supermarket to get to know its customers, so as to be able to predict their behavior.
A loyalty program for regular clients can address this problem and help the supermarket determine in advance the right weight distribution.