Business Green: Supermarket giant Sainsbury’s is milking the runaway success of the eco friendly pouches that have replaced traditional plastic milk cartons, confirming today that it is moving forward with plans to roll out pouches across other product ranges. The company also revealed it will support the new packaging by hosting a one-day give-away of jugs to customers. Five hundred of Sainsbury’s stores across the UK will provide free JUGIT containers to hold milk pouches this Saturday, as part of …