Hi all. New to the forum and this is my first post so I hope I do it right!
I've been pressing the standard foam mouse mats for quite some time without any problems, but I recently decided that I wanted to improve the quality a little and decided to start printing stitched PU leather mouse mats. They are really nice quality and they come out really great except for one problem. Even though I give them about a 5 second pre-press to remove any moisture and then pressing (185C for 70s medium pressure) they tend to come out a little warped and I have to put a weight on them for a few hours to straighten them out. Other than that I'm really pleased with them.
Does anyone have any advice on preventing the warping or at least a quicker fix to straighten them out? I tried putting the mat into a cold press and pressing one firm for about 15-20 minutes, but this takes out most of the sponginess from the mat. I think it's the thick cardboard backing that's the problem.
Anne.