I think the idea with plastics is to carry the cut pieces away so they don't weld back together. Therefore a bandsaw with a fine blade, 7 tpi or more, would be what I would try. Hopefully the plastic would cool off by the time it got back around if it was still in the gullet of the blade, and better yet it gets knocked off and into the dc. Jim.
Home of Irish Setter Rescue of North Texas
When Irish Eyes are smiling, they're usually up to something!!
At a minimum, I'm Pentatoxic...but most likely, I'm a Pentaholic. There seems to be no known cure. Pentatonix, winners of The Sing Off, season 3