Foil Stamping "Sheets sticking to platen"

[ROCPrinter]

OK, we are running some small 12" x 18" sheets on Kluge that has heavy ink coverage on the back side.

The sheets are run offset using Pertech 100 series inks on a 100# Gloss Text sheet.
There are 8 foil areas on the sheet that are .25" x 3.5" big.

When we foil stamp them the heat is traveling through the sheet and the sheet is sticking to the platen. We have tried wax, and a poly stencil sheet but they are still sticking. We placed Teflon tape (from our shrink-wrapper) behind it but it left a pattern in the sheet due to the pressure.

Does anyone have any ideas?

Thank you in advance for your feedback!

 

[kerstenp]

Try thin mylar over the phenolic, lower your temperature and speed up the press.
And let the ink dry if you have the time.