How do I avoid the white spots that pop up on my garment after curing?

May 9, 2017 at 5:16 am 1 comment

Printwear Questions (6)

This was a question posed by a Printwear reader, and here is Kieth Stevens’ response:

This issue happens at times when using a white underbase ink that contains a blowing agent. The blowing agent helps improve opacity and control dye migration. However, the blowing agent contains microbeads that inflate when cured, and some may pop, leaving a hole in the inks printed on top. To help mitigate this issue, use a quality white ink that does not contain a blowing agent, or flash the white a little longer to get the blowing agent to begin puffing earlier. Over-curing the ink may be another cause for the popping as well.


Kieth Stevens is the Western regional sales manager for International Coatings. He has been teaching screen printing for more than 10 years and is a regular contributor to International Coatings’ blogs.

International Coatings manufactures a complete line of Centris™ non-Phthalate screen printing inks, including a wide variety of whitesspecialty inksspecial effects inks,color matching systemsadditives and reducers.  In addition, International Coatings also manufactures a line of AXEON™ non-Phthalate, non-PVC special effects inks. For more information on our products, please visit our website at www.iccink.com.

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Entry filed under: General, How-To, Printing Tips. Tags: , , , , , , , , , , , , , , , , , , , , , , , , .

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