@coppertop - Rolled film in the CTS definition is with an external condenser in addition to a cold trap (not in the rolling chamber) and wiped film has an internal condenser and only a cold trap. They sell rolled films for lights stripping applications (ethanol and/or terpenes) and wiped films for distillation (as a product) applications.
@magister I’ve never run a CTS with a cold trap not ran on a Julabo cooler, I’ve never experienced the problem you’re describing except on a KD-30 when I ran a few buckets of failed sauce. My cold trap became saturated with freezing terpenes and the temp difference made my catch brittle, which snapped when I tried to touch it to empty it. However my cold traps were -30 (kd-6), -45 (kd-10), and -60 (Kd-30)