(THE CHRISTIAN SCIENCE MONITOR) May 1, 2017 Akron, Ohio—Inside a clear plastic box the size of a rabbit hutch, a 12-inch drum turns slowly on its axis. At each turn the drum is coated with polymer threads, 100 times as thin as a human hair, fired from a needle-and-syringe electrospinner, just as Spider-Man shoots his webs. It takes 20 minutes to produce an adhesive film.