The only other options are glass or metal. Glass is very heavy with an increase the aqua-trail of the product in transport (not to say the cost) and is also a very energy intensive material to make. It obviously also prone to breaking… Imagine next to the pool!
Metal is a moral nightmare… many mines are in developing countries and employ virtually enslaved children to work there and the run off from mining is a major threat to marine life. (Just read up about that threat to the barrier reef).
So it has to plastic but after our PLA fiasco we found a material called Green PE which is made from sustainable sugar cane, has a lower carbon footprint than traditional petroleum based plastic yet works very well. So that’s the state of the game right now and the leading edge as we know it. All the clever eco plastics you see on those wonderful videos, dissolve in water so cannot work for us… leaving aside for a minute just how compatible the dissolved material is with marine life.
So Green PE it is – which can be recycled with other plastics.
When we use paper boxes (we are phasing them out) we use is from sustainable paper mills and forests.
The printing inks are water soluble.
The “cellophane” (have to be careful since that is a trade mark) is in fact sustainable and compostable and we were the ones to initiate it.