White ink bubbling...

[Donnie]

I cleaned  my filter on my dryer the other night. I had to pry it out it was so stuck... Damn it was almost completely clogged. I ran a job last night, first job after the clean, and I noticed some of the first few shirts that came through with heat bubbles. (gildan g500 dark heather)  So I turned it down 10 degrees. I wound up about 15 degrees below my normal operating temp.  My catcher drew my attention to a few more as we progressed. Some were ever so slight and the worse one I replaced. I continued to bump it down as we went.  My heat temp gun indicated anywhere from 330 to 365 on the garment. Typically you wouldn't notice that type of problem at that temp. Everything that left the press looked fine and the problem presented itself after the dryer.  On previous discussions about this some said it was over flashing some said too hot of dryer temp.  During the run, I had to add a second flash to the second color... so now I'm wondering if over flashing contributed to this or if the problem lies solely on cure temps.

White ink was Rutland Snap White.
Second.... Purple
Flash again
Third.. Teal
Fourth.... shimmer gold.



Doddamn, this biz can give you ulcers!

[ebscreen]

Residual heat from flashes will obviously increase temp going into the dryer, so that can be at play.

My guess is that your dryer "learned" to control the heating elements/burners under the conditions of having
a restricted airflow due to the clogged filter. IE it learned to shut off X amount of degrees before set temp to hit it,
and I'd wager that amount is/should now be less based on airflow = overshot temp. Luckily you don't
have to do anything to fix it other than continue to run your dryer.

Also, Dark Heather is a blend and those always heat up faster.