This technology is actually targeted more for bottled milk producers (and suppliers/distributors) rather than milk consumers. BASF said it has developed the world's lightest half-liter polystyrene bottle specifically geared for milk product containers because of the special properties of the plastic - maybe the acid in orange juice will melt the bottle???
BASF said it was successful in producing the 7.5 gram bottle from a conventional stretch blow-molding machine. As all green people now know, less weight translates to lesser raw material consumption, less energy to transport, lesser waste and sometimes lower product costs.