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Discharge Info
Ins & outs of discharge ink

WHAT IS DISCHARGE INK


Discharge ink is a waterbased ink with a discharging agent added. The discharge agent essentially “bleaches” the dye out of the shirt. The shirt is simultaneously dyed the colour of the pigment of the ink. As this method heavily relies on how well the garment reacts to the discharge agent, it isn’t without issues. We’re looking to outline some of the hurdles for you in working with discharge.


CHOOSING GARMENT COLOURS


The garment colour you select can greatly affect the results of the print. As some colours are not recommended for use with discharge ink. See examples below & read on for the do’s & don’ts of choosing your garment colour. All examples are printed with the same ink colour.




DO:

Typically less vibrant colours will react well with discharge ink. Some examples are black, charcoal grey, navy, khaki & brown.


DONT:

Vibrant colours will not give good results with discharge ink. Some examples are red, royal blue, purple, green, teal yellow & orange. This is down to the dye used with these colours. For example, if printing white discharge on these colours, the final result will be a lighter version of the shirt colour. So for red shirts, the result if printing white ink would be pink, & for blue, a light blue.


VERDICT:

A couple of suppliers have discharge rating charts, so along with that & our own tests we should be able to advise you wether your preferred colour will work with discharge inks. So you can get a general idea, here’s a link to Gildans discharge rating chart.


CHOOSING GARMENT COLOURS


The garment material you select will affect the print results. Most 100% cotton garments will discharge to some extent. See examples below & read on for the do’s & don’ts of selecting garment material. All examples are printed with the same ink colour.




DO:

Discharge typically works best on natural fibres, so we recommend 100% cotton only. There are a few garments that have consistently excellent results we recommend. Unfortunately the majority of garments, even if they’re 100% cotton are average at best. If your design is not vibrant & you don’t mind some potential variation between garments, then we can print on garments that aren’t in our recommended list. 


DONT:

Any garment containing polyester. Synthetic fibres typically to not react to discharge ink, which can leave a mottled effect in the print (some people like this).


VERDICT:

We recommend sticking to our approved list of garments for discharge ink for best results. If you want a mottled, vintage effect go a poly cotton blend. If you don’t mind muting of colours / some variation that opens up more options for you with garment selection.


COLOUR MATCHING


As discharge ink relies so heavily on how well a garment reacts to the discharge agent, exact Pantone matching is not possible. You’re welcome to provide Pantone colours to reference from, but some variation is deemed acceptable.


VARIATION IN RESULTS


We’ll always suggest going for a garment that we know will consistently react well with discharge ink. If you want to deviate from our recommendations we will let you know the likelihood of possible issues with the chosen garment. There are some brands that 95% of the time will discharge beautifully, but 5% of the time the prints will appear muted. This is usually a certain size in a batch. A lot of garment manufacturers make their products in multiple factories, so having discharge reactive dye consistency across multiple locations is difficult. 

Unfortunately no garment suppliers guarantee their products will react well with discharge ink, but some have been very consistent which we recommend based on years of experience. 



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