It's hard to find an honest answer. Most of the web pages I've looked at are from the manufacturers or suppliers (who understandably are going to portray their products as being just great) or are from sites with an axe to grind...I asked that backalong. Nobody answered.
I've found one supplier of "ethical products" which sells silicone coated greaseproof paper; while another site states that such silicone coated paper
The Gourmet Food Wrap Company supplies what it describes as "natural greaseproof paper [without] any chemical treatments or coatings".
In my ideal world, packaging would be minimal and personalised.
You would wrap your food in paper that identifies you, and if you litter the environment with it, you are identifiable.
I'd have take-away pizza cartons marked at the point of sale with the purchaser's name and address, so that when the carton is abandoned in the middle of the park, the culprits can be identified and fined for littering.[/QUOTE]