There is a heat time and a hold time. The hold time on second lamination is something like 6+minutes.
I'm using the Ministar S Thermal former and in this machine there's only the scanned bar code times for the great Lakes mouth guard materials. So when you say hold time is up to 6 min; are you...
I ordered the (Hard/Soft) but when judging your post response I get the impression that you don't think the recommended hard soft product would be the right material for a clear bubbles second layer? I just wanna make sure that I'm purchasing the right materials.
Thank you for the advice, I will try that today! But what thermal forming machine do you use? Drufomat? Because with the Ministar I'm not able to allow it to sag.
I too have the same issues; did you ever figure out how to solve the problem? I'm using the Ministar @ 90psi with great lakes thermal forming materials 2mm and 3mm. I have tried the hole puncture technique, acetone, heat gun between layers technique and I still have delamination and or bubbles...