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White spots on printed shirt

 
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Old July 13th, 2019 Jul 13, 2019 4:57:01 PM -   #1 (permalink)
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Default White spots on printed shirt

So here are the facts
Epson pretreatment 1:2 ratio
Wagner sprayer and foam roller to even out
Heat press 330 degrees F
30 second press using quilon parchment paper then till dry
Printed on epson f2100
Cured on same heat press 330 degrees f 30 seconds twice.
We are getting spot like white areas in the red color. Its not a solid red. Does anything have any ideas why this is happening?
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Old July 13th, 2019 Jul 13, 2019 9:04:18 PM -   #2 (permalink)
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Default Re: White spots on printed shirt

No expert here, but your 2nd photo shows what look like the spots of red ink that havent adhered. Also the garment texture looks quite course/dimpled. I suspect the dimples are where the red hasn't adhered, maybe use a magnifying glass to take a better look, and if so, try using a firmer heat press pressure on this fabric type.
 
Old July 15th, 2019 Jul 15, 2019 8:01:02 AM -   #3 (permalink)
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Default Re: White spots on printed shirt

Quote:
Originally Posted by ltypromo
So here are the facts
Epson pretreatment 1:2 ratio
Wagner sprayer and foam roller to even out
Heat press 330 degrees F
30 second press using quilon parchment paper then till dry
Printed on epson f2100
Cured on same heat press 330 degrees f 30 seconds twice.
We are getting spot like white areas in the red color. Its not a solid red. Does anything have any ideas why this is happening?
This is a simple one its the foam roller your using. What you are seeing is what we call fiberlation, the fibers are sticking up and when the white layer goes down they are still standing, then color goes down and when you press it to cure its making those fibers lay down finally but you basically "folding over" the colored part of the fiber and the white is now showing. A few things you can do to help this, first you can add more pretreat to really mat those guys down, you can use a third party pretreat that does a better job at laying them down (like Firebird pretreat for example), Stop using a roller I do not know when using a roller became a thing but its the worst idea on the planet because it takes off pretreament and on the back end it raises the fibers you just layed down because if you use a roller more than once it is sticky. I recommend using a paint brush doesn't matter what kind do what ever kind you like and brush the pretreat in one direction this helps even it out and lay down the fibers. Any of these steps will give you a better result.

Also looks like on the second print you have same transfer from the sheet you used make sure you use a clean on every few prints.
 
 
Old July 16th, 2019 Jul 16, 2019 1:17:07 AM -   #4 (permalink)
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Default Re: White spots on printed shirt

You have two issues here.
1. fibrillation
if removing the paper, after drying the pretreatment feels sticky, you are pulling fibers.



2. Contamination from previous prints
Curing the ink should be done by hovering for 20-30 seconds, and then pressing with single use parchment paper.
 
Old 1 Week Ago Aug 15, 2019 7:48:57 AM -   #5 (permalink)
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Default Re: White spots on printed shirt

Use a brush to even out the pretreatment on the shirt. Your best bet to avoid that problem is always to go with ring spun cotton tees. Tightly woven cotton tees are ideal for dtg. And ALWAYS hover as this acts as a flash and allows the inks to fuse before applying pressure.
 






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