I am in search of polyurethane coated nylon to use to make snack bags with and would like to know if anyone has a reputable source. I have found several places online, but they are all overseas. Also, what are your opinions (preferably research based) on which materials to use? I have read from several sources that PUL and oil cloth are no no's as they are not food safe and that beeswax cloth and the coated nylon are the best. Anyone find any different research?