Plastisol is the most widely used screen printing ink in garment production. It sits on top of the fabric as a solid layer — not absorbed into the fiber like water-based ink — which gives it exceptional opacity. A bright yellow prints true on a black t-shirt. A white graphic reads cleanly on navy. This is plastisol's core advantage, and why it dominates the market for graphic tees on dark fabrics.
The trade-off is hand feel. Plastisol prints have a tactile, slightly raised surface that you can feel with your fingertip. On a large chest graphic, this can feel heavy. On a small logo or text element, it's barely noticeable. The choice between plastisol and water-based often comes down to fabric color and graphic size.
Always specify PVC-free plastisol in your tech pack. Standard plastisol contains PVC and phthalates — restricted in EU/UK markets and increasingly flagged by retailers. PVC-free is the safe default.
PVC-free — why it matters
Traditional plastisol ink contains polyvinyl chloride (PVC) and phthalate plasticizers. Both are regulated substances in the EU under REACH, and increasingly restricted by major retailers and certification programs like OEKO-TEX. Garments printed with PVC-containing inks can be blocked at customs or rejected by retail buyers.
PVC-free plastisol performs identically to traditional plastisol — same opacity, same durability, same application process — but uses alternative plasticizers that are not restricted. Always specify "PVC-free plastisol" in your print spec. It's not more expensive; it just needs to be explicitly requested.
Production specs for your tech pack
| Spec | Value | Notes |
|---|---|---|
| Print method | Screen printing | Rotary or flatbed screen |
| Ink type | PVC-free plastisol | Not standard plastisol — specify explicitly |
| Fabric suitability | All colors, best on darks | Opaque — covers dark base colors |
| Color reference | Pantone C (coated) | Plastisol color matching uses Pantone C, not TCX |
| Placement | Specify in mm | From reference point (e.g. neckband seam) |
| Strike-off | Required | Printed sample for approval before bulk run |
| Wash test | Required | Confirm no cracking after 10 wash cycles |
Note on color reference: Unlike fabric dyeing which uses Pantone TCX, plastisol ink matching uses Pantone C (coated) — the standard paper-based Pantone system. Make sure your artwork files reference Pantone C codes, not TCX, when working with screen printers.
Cracking — the main durability issue
Plastisol prints can crack over time if the ink layer is too thick or if the curing temperature during production was too low. Cracking typically appears after repeated washing — the plastic layer becomes brittle and develops fine cracks that spread with each wash cycle.
The prevention is in the spec: require a wash test (minimum 10 wash cycles at 40°C) as part of your strike-off approval. A print that passes wash testing won't crack in normal use. Include this requirement in your print spec notes — it's a quality checkpoint that separates good suppliers from poor ones.