I want the print to have a soft touch?
What is a discharge ink?
Here at Wicked Printing Stuff we don’t expect you to know everything and we are happy to explain things.
So you want to print a light colour on a dark garment and you want it to feel soft. Now plastisol inks wrap colour AROUND the threads but gives a rubbery feel (also referred to as hand) but is bright. So ideally you want a water based ink. For those of you that have tried this and I can hear you shouting at the back, but I have tried water based inks and I just can’t get a good opaque print, that’s why I use plastisol. Well that’s where the discharge inks come in! 
For the punk rockers out there, remember how you got that bright green hair, that is right you had to bleach out your own hair colour first so the back ground colour was white, only then the colour would take and be vibrant and striking. It is almost the same in screen printing but we use discharge inks that need curing. The discharge ink actually removes the dye.
First off you have to have the right garment fabric, it has to be 100% cotton and it has to be dyed with a dischargeable dye. So check with the manufacturer. If the garment is a mixture of cotton and polyester only the cotton will discharge. Now that might actually suit you but you would need to do a trial run to make sure you get the effect you want.
So having got the right garment now we need the right ink. There are a lot out there and some are more complicated to use than others.
Water based dischargeable inks are the easiest and most eco friendly ones to use. The process works during curing when the discharge removes the original dye and the ink gives the new colour. To do this you add activator to the ink which ensures you get an intense colour.
At Wicked Printing Stuff we have researched the products extensively. As a consequence we have developed our own range the splendid WPS Premium Discharge Ink. The ink is based on MagnaPrint AW . Which has been developed to meet the most recent ecological requirements.
For the discharge process to work, you do need a tunnel dryer (the longer the better). Typically 90-120 seconds dwell time is needed for a good cure. You can also use a heat press which is great for low production. You also need well ventilated premises and printers should read the MSDS and be aware of any health and safety consideration.