Hi all,
When applying Luster Lam to psa vinyl, I never had a silvering issue while using a Seal Pro 62 Cold Laminators.
A conversation with the 3m rep for the Atlanta area revealed that cold is preferred but if you use heat then keep it between 90 & 100 deg f.
Also important is to Not Stretch the film, by applying too much tension on the supply spindle.
I was at a demo and they had the laminator temp to 141 deg, and stretched the lam by more than .25" on each side.
Guess what happened when the lines of text was cut and weeded, it went all wavy.
Hope this helps.
C