Ah, I see. We have a Kayla Mistral, and it has heat assist. I love this laminator. As Reveal said - the heat helps to reduce silvering. I use it for most all calendared laminates.Laminates, I have a laminator with heat but we have never really used it and doing the research other then Seal no one has a "heat assist" lamination.
You piqued my curiosity - Ours is on/off - no adjustment. Put my temp gauge on it and it's 115F. Didn't realize it was that hot. Right about cast; they don't need it and get all mushy.It's currently at 95°. Hmm, I had it at 94° forever. You can set up to like 3 presets I think, but I usually just use the one preset the installer/trainer set it at. I'm sure there are optimum temps for various materials, I haven't really researched that yet. I just turn it on for all things calendared and off for the cast. It works, so I haven't bothered spending the time to dial in optimum.