Trojan Horse Screen Printing.

[Mr Tees!!]

...I gotta wonder though, would the uncured ink that washed off hav any adverse effect on the rest of the clothiing that might be in the same load of laundry? Especially if the image to be purposefully washed off was a large area...

[Dottonedan]

I first thought that they printed that white down first with plastisol and cured it with a flash. Then let it cool, then come back (while still on press and registered) came back to print the top white, then print the black. Next, run that top white and black through a dryer so fast or at such a low temperature so that only the surface of the print was cured to the touch....but once washed, would fall off.  Great idea for this application.

[RICK STEFANICK]

exactly dan. thats all they did. or ran a second location using lasers for accuracy

[Lizard]

What about plasticharge?  I have never used it but isn't it two parts?  Print the first part down of the first image then the second image would only be the second part.  Some type of two part activated ink would do the trick and be undetectable.

[screenxpress]

Plasticharge is discharge printing and would not work that way.  You're right in that it's a two part - Hybrid ink and Oxidizer mixed together. 

You print and run through a dryer at very slow speed (around 90 seconds and the ink should reach 320 for about 75 seconds - different combination for gas).  The dryer will cause oxidation of the garment dye and the plasticharge color will set into the threads.

You could not print plasticharge and not cure it.  In fact, the recommendations is to wash the final cured product before you wear it (to avoid problems with skin).

Factoid - Plasticharge is a plastisol (hybrid) ink and when you add the oxidizer, it turns into a pseudo water base ink and wash up is done with water, no chemicals.