I was amazed to find this technical note on Tetrapak’s website.
click the image to open the note
Since I first heard of Tetrapak in the 1970s I always saw them as highly technology and science focused and the leaders in liquid food processing. I and many others accepted their process design parameters without question. Now after all these years Tetrapak has the foresight and courage to question whether what has become normal practice is really the best solution.
They apparently asked three questions can the heat load in pre-filling pasteurisation be decreased, will a lower pasteurisation temperature result in product change and can a larger design temperature difference be used.
This interesting paper seems to answer positively in all respects and reports a 1.3 kg per 1000l carbon footprint saving which indicated we will be seeing changes in our plants.