[Russellaga]

Hi Folks,
we have printed mugs for quite a while but have hit a snag, we have been buying mugs from Signzworld here in the UK, did an order for a customer who reported that they washed them in a dishwasher and the print ran (black only design) i have done a test on a second batch of mugs from the same supplier and i am finding the same problem, we use an oven and wraps and have done for some time, never had these issues before... I am leaning toward the mugs being the problem

any ideas?
if the oven wasn't getting the mugs to the correct temperature could this happen on any mug? - we've never had any complaints before from any of our end user or trade customers, its got me doubting myself
cheers
Russell

 

[Amw]

Hi Folks,
we have printed mugs for quite a while but have hit a snag, we have been buying mugs from Signzworld here in the UK, did an order for a customer who reported that they washed them in a dishwasher and the print ran (black only design) i have done a test on a second batch of mugs from the same supplier and i am finding the same problem, we use an oven and wraps and have done for some time, never had these issues before... I am leaning toward the mugs being the problem

any ideas?
if the oven wasn't getting the mugs to the correct temperature could this happen on any mug? - we've never had any complaints before from any of our end user or trade customers, its got me doubting myself
cheers
Russell

Do you have a mug from another supplier that you can test with?

If you do you can eliminate the oven as an issue. I would guess it will be the coating on the mugs is not good. Call your supplier and ask if they have heard any issues lately.

 

[Conde_David]

Generally when we see these issues, it means that the ink has un sublimated. Usually it means that Coating is reaching its Glass transition point at too low a temperature. I would Test a older or different mug.


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[Russellaga]

thanks Marsha & Tony / Thanks David, i have ordered some alternative mugs to test again and confirm its not our oven at fault

 

[Dekzion]

It doesn't pay to buy cheap as far as mugs go, if the temps etc are wrong you'll get a faded or burnt image but it will still never wash off, if it's just the blacks maybe you have some ink that will transfer to the surface like a paint but not actually sublimate in to it. (cheap?)