[jwyss234]

I don't have a definitive answer on bubble wrap but my gut reaction is that it's not safe for toys. Collector friendly supplies are kind of their own thing and box stores typically don't carry them. I've searched for collector friendly and polypropylene bubble wrap without any luck.

I've been using polypropylene zip bags for the past few years to protect my figures and I've been very happy with them. I've mainly stored Marvel, DC, Star Wars, and Neca figures in them but I've also used them a couple of times for Transformers without any problems. I first came across an article on OnePerCase.net about using poly bags which you can read here: One Per Case: PSA: How to Store Action Figures Like a Boss. I purchased my bags from the same company listed in the article, GT Zip. While the prices may seem high, you are getting 1,000 bags in your order. Not every bag GT Zip sells is made of polypropylene so stick with the Ultra Clear Zip line of bags. GTZIP.com - 2 Mil Lock Top Zip ® Bags Wholesale

I'm sorry I wasn't able to definitively answer your question about bubble wrap but hopefully you'll find the OPC article helpful. Hopefully your long term storage is a closet in your house and not a storage unit. Even if you use the best collector grade materials, extreme heat and critters can still damage your figures.