Food grade plastic and storage and proofing of baked products
In one of the threads recently I came across a mentioning of the use of plastic grocery shopping bags as being a non-food grade plastic - but were/are being used by some to proof loaves prior to baking.
These days I have access to saran wrap which is food grade - but in the past had used non-food grade trash bags (the big black kind) to proof several trays of loaves. I quit this practice fairly quickly as I noticed these bags give off a very strong smell. Not that any loaves ever proofed long enough for the odor to transfer to the dough... but I didn't want to take any chances either.
Additionally I found that some American brands of black platic trash bags are actually impregnated with insecticide.
Great for keeping bugs out of trash - NOT great for coming in contact with food.
So... at any rate - I'd like to start a thread where people can post their info on food grade plastics and plastic wraps and containers - basically anything to do with making/proofing/storage of bread.
If you have questions or links please post them here.
Here is a link I found on food grade storage:
Food FAQ 
and a more general page from the same site on all facets of food storage: