Paul: Thanks for the comments and for sharing the process of making Verterra's plates! I think it is amazing that just leaves can make such a beautiful, durable product!!
Anne: Number 5 recyclables are plastics with polypropylene. These are very durable and resistant to chemicals and heat. Most no. 5 plastics are safe in the dishwasher and can be reused without worry as far as I know. I personally wouldn't recommend using any type of plastic container or dish if it becomes dinged, dented, or chipped - just to be safe - but these should hold up through regular use and sanitizing. I don't have any information on how many uses you may get though!