Oops, forgot about this forum. Sorry, quitting after just one post, school has been crazy. But hopefully now I'm back for a while. I've been looking at Hot Melt Adhesives
recently. When they cool, which should be relativity fast, they should be a strong enough in large quantities to hold, say, a criminal down. Not enough to swing from, or to hold someone's weight, but it should be sufficient. A nozzle would filter it into thin webs or a spray, though I think a focused spray would work the best.