How does dissolving LDPE in wax work?

I was looking into machinable wax, and found it's based on dissolving LDPE into melted wax. While I understand the normal salt dissolving in water process, I'm not really sure how plastics can dissolve into wax. Do the plastic chains unravel and get suspended in the wax? 


Here's a [video of the process](https://www.youtube.com/watch?v=e1tU4tLypBU).


