Surface Design – W8 ( Printing with special inks: Thermochromic ink )

Printing with special inks: Thermochromic ink

What is Thermochromic ink?
Thermochromic inks can change from colourless to colourful OR colourful to colourless very quickly. Although thermochromic inks were introduces in the 1970s, they are used extensively today. I changes colour when temperatures increase or decrease. Often used in manufacture of many toys or product packaging, as well as thermometers. Thermchromic ink can also turn transparent when heat is applied; an example of this type of thermochromic ink is found on corners of an examination mark sheet. This proves that the sheet has not been edited of photocopied, and also on certain pizza boxes to show the temperature of the product. 

Materials Used:
– Thermochromic pigment powder
– SIlk Screen medium
– Printed Surface (etc. fabric)
– Silk Screen 



We start off by preparing our materials and out desired pattern on our silk screen panels.


Add about 8 scoop of silk screen medium into an empty container and add in about 1-2 scoop of thermochromic pigment powder in.


Mixed the pigment powder and the silk screen ink well:)


We also make other different colour and followed by selecting our pattern we want to create.


Lay out printed surface on a flat top and put out silk screen frame ontop of our printed surface. Put just the right amount of mixed ink onto the silk screen and we could go on to do our silk screen:) 



I tried with 100% cotton fabric as most of our daily life items are make of cotton bed sheets, t shirt etc.


Silk Screen!! 


After we’re done just slowly peel our silk screen off the fabric. Get someone to secure onto the fabric for you while you peel of your silk screen. 




I also tired with thin cotton linen fabric to compare the effect. with thin material the pattern is also quite visible on the back side and hence I realized that the ink also turn transparent when we put heat on the back side of the fabric:)



Not wasting the tissue we use underneath the fabric as protector. I kept it just to see if the effect would also appear on other medium:) IT DOES!!  ( CLICK ON THE SECOND IMAGE!!! )


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