At the point of writing, KCC does not have a function that can print your barcodes on to a sheet of labels.

There are however, a number of free solutions to make Microsoft Excel produce barcodes. As these are all 3rd party applications, we are unable to recommend any one in particular.

Once you have a solution to print your barcodes, you can get csv exports from KCC using one of the bundled "System" ad hoc reports which you could then use as the data source for producing barcodes.