There are a lot of different types of plastic, as you're aware. You've seen the thin, flexible, lightweight plastic wrap and you've also seen very hard and strong plastic, like the stuff that's used in your cell phone. \
In other words, acetone can cause damage to some types of plastic. The finish of the plastic may get damaged and the plastic itself may even be affected. \
Other types of plastic, however, might stand up to acetone with no trouble. To know for sure, you're going to need to spot-test a little acetone on the plastic you're planning to clean. \
There are other options when you’re trying to figure out how to remove glue from plastic, so acetone doesn’t have to be your first choice. \