generally In-mold labels are very thin part inserts (less than 1mm thick).
One must run a Cool analysis to include in-mold labels in calculations.
If a label is more than 1mm thick, you will need to model it as a part insert.
The procedure is well described in Insight help.
Search for Part Inserts and and look at "Modeling in-mold labels"
Does anyone have a "generic" value for a PP in-mold label interface conductance. We utilize many IML vendors, but this information is not readily available and from what I understand very difficult and costly to measure.