Water-Based and Discharge Inks: How Prints Get That Soft Feel
By The Velocity Wear Team
Pick up two printed t-shirts and run a hand over the graphic. On one you can feel exactly where the print starts and stops. On the other you cannot find the edge at all. That difference is ink chemistry, and it is the single biggest determinant of how a printed garment feels.
Plastisol
A PVC-based ink that does not dry by evaporation — it cures with heat, fusing into a flexible plastic layer on top of the fabric. It is the workhorse of the industry for good reasons: opaque on any garment colour, forgiving on press, colour-accurate, and durable.
The trade-off is that it sits on the surface. Heavy coverage produces a print you can feel and that does not breathe, and thick deposits can crack over years of flexing. It is the right choice for bold graphics on dark garments and for anything needing precise colour matching.
Water-based ink
Pigment suspended in water, which soaks into the fibres and is then cured. Because it dyes the fabric rather than coating it, the print is soft, breathable and essentially imperceptible by touch.
- **Best on light garments,** where the pigment does not need to overcome the base colour.
- **On dark garments it needs an underbase,** which reintroduces some of the deposit it was chosen to avoid.
- **More demanding on press.** It dries in the screen if the printer stops, so it requires a more attentive operation.
- **No PVC or phthalates,** which matters both for feel and for end-of-life contamination.
Discharge printing
A different mechanism again. Discharge removes the garment’s dye rather than adding a layer over it, replacing it with pigment in the same step. The result is colour that is genuinely part of the fabric, with no deposit whatsoever.
It only works on dischargeable dyes, which in practice means reactive-dyed 100% cotton. It will not work on polyester, will be unpredictable on blends, and results vary between garment colours because you are working with whatever dye is there.
That variability is the reason discharge produces the soft, slightly heathered vintage look people associate with well-made band merch — the colour is not laid on top, it is what the fabric became.
Choosing between them
- 1**Bold, opaque graphics on dark garments:** plastisol.
- 2**Soft hand on light garments:** water-based.
- 3**Vintage feel on dark 100% cotton:** discharge, accepting some colour variation.
- 4**Exact Pantone matching:** plastisol, which is the most controllable.
- 5**Large coverage areas where breathability matters:** water-based or discharge, because a large plastisol area is effectively a plastic panel.
What to specify when ordering
Say what you want the print to feel like, not just what you want it to look like. "Soft hand, no visible edge" is a specification a printer can work to. Also state the garment fibre, because it decides whether discharge is even available — and be aware that soft-hand options generally need a 100% cotton garment, which may change your fabric choice as well as your ink.
