Hi!
I see more than one reason in your mail why white ink peal of.
1. Way to much pretreatment
2. To much white in underbase
3. To much pressure on the heatpress
4. Have you checked your heatpress temp with any instrument?
Here is our method in general:
Pretreatment is the following.
1) Press shirt for 5 seconds to remove moisture and flatten fibers.
2) Moist the shirt with a water bottle sprayer (old windex-bottle) Not wet, just moist.
3) Spray shirt with wagner power sprayer back and forth ONE time so it shows a mediumgray surface.
4) Moist the shirt again with a water bottle sprayer.
5) Roll over shirt with foam roller down then across (donīt need to be gentle).
6. Let the shirt rest for a minute or more. Hang it up and do the next shirt. (important step that let the pretreatment sink in to the garment).
7) Press for 15 seconds with medium pressure with non silicone sheet.
8) Press for another 15 seconds to flatten fibers without any sheet at all.
Now the shirt should be dry and ready to print on.
Image preparation:
Be sure to save image in un-profiled RGB color space and around 150-200 dpi in scale 1:1
Printer preparation:
Make sure that you have a 100% perfect nozzlecheck. If not, you donīt even have to try to print white. Fill up ink to the right levels.
Print settings:
When using a Blazer Express (which has the 4880 Print Head) it lays down alot of ink if needed.
1440x720 dpi Cartoon HS White
720x720 dpi Cartoon HS Color
Underbase Settings
30 Strength
60 Light
3 Dark
3 Choke
Underbase Black UN-Checked
if using overlap highlight:
0 Strength
70 in 100% white
0 Light areas
0 Dark areas
Curing shirt:
If the shirt is very wet (big image with alot of white) let it air dry until the surface is dry.
Then heat press with a silicon treated paper, low pressure (not more than 5psi), 165 degrees celsius (330 farenheit) in 180-240 seconds (time depends on how much ink is used in the image.
This is waterbased ink and if you use to much pressure, to short time or/and to low temperature the water canīt escape from the heatpress and that will affect the washability.
Washing instructions:
Wash in low temperatures, 30-40° celsius with color detergent and inside out. Donīt iron directly on print. Donīt use bleaching.
This is how we do it in general
