Ungreen Fonterra

Why does Fonterra use lots of non recyclable plastic packaging while selling itself as a clean green New Zealand company? For example Fonterra's Tip Top ice-cream comes in non recyclable containers which goes against their clean, green image! We need a good healthy environment to produce the milk that they use but they are currently damaging it through the use of non recyclable containers. So I ask you again, why does Fonterra use lots of non recyclable plastic packaging when there are lots of less damaging alternatives?