Screen Printing on Nylon: Ink, Additives and Curing
How to screen print on nylon jackets and bags: ink systems, adhesion additives, loading, low cure ranges and adhesion testing.
Shop guide to screen printing nylon: nylon-rated ink or adhesion additive, coating checks, jacket and bag loading, cure ranges and adhesion tests.
For screen printing on nylon, use an ink system rated for nylon, often a plastisol with an adhesion additive or catalyst the ink maker specifies, remove any water repellent finish from the print area, cure inside the ink maker's temperature range without scorching the shell, and pass an adhesion test before the full run.
Key rule: nylon adhesion is a system, not a setting
Ink chemistry, additive ratio, pot life, fabric coating, cure and test timing all have to line up. Change one and retest. The ink maker's technical data sheet is the authority for every number.
Part of the screen printing guides in the DAX Learning Hub. For ink families, see Plastisol vs Water Based Ink. For cure basics, see How to Cure Plastisol Ink.
This guide is for shops quoting nylon jackets, windbreakers, coach jackets, drawstring bags and similar tightly woven synthetics. It covers workflow and what to verify. It is not an ink brand comparison, and it does not replace the technical data sheet for the ink you buy.
Why Nylon Resists Ink
Nylon is smooth and tightly woven, so standard plastisol has little to grip. Ink makers note that regular plastisol often fails to bond to nylon on its own, which is why nylon ink systems and adhesion additives exist.
Many jackets and bags also carry a water repellent finish. That coating can block adhesion even when the ink is correct. A common field check from ink makers: wipe a test spot with the cleaner the ink maker's tech sheet lists (follow its label and SDS), then place water drops on the cleaned and uncleaned areas. If water soaks into the cleaned spot faster, a coating was present and the print area needs cleaning before printing. Change wipes often so the coating is not spread back onto the fabric. Check the garment maker's guidance and test on a hidden area first.
Ink Systems and Adhesion Additives
Nylon-Rated Ink vs Additive in Standard Plastisol
Two routes show up across ink maker sheets: a dedicated nylon ink that is mixed with its own catalyst, or an adhesion additive (also called a bonding agent or catalyst) mixed into compatible plastisol. Makers generally do not guarantee their additive in another maker's ink, so keep the system matched unless the sheet says otherwise.
Mix Ratios and Pot Life (Ranges)
Published additive doses in ink maker sheets commonly fall around 5 to 10 percent by weight, and the mixed ink typically has a pot life of roughly 4 to 8 hours. Over-dosing can shorten pot life or thin the ink, and under-dosing can cost adhesion. Mix only what the job needs and follow your ink maker's exact ratio.
Clean Up Promptly
Catalyzed ink can harden in the mesh. Ink makers advise removing it from screens and tools right after the run with the cleaner the sheet names. Mesh choice for nylon ink follows the same detail and deposit logic as other plastisols; see the Screen Printing Mesh Count Chart.
Loading Jackets and Bags
Jackets have linings, zippers, snaps, collars and seams that can lift the print area or let the shell shift between strokes. Load so the print panel lies flat and tight on the platen, keep zippers and thick seams off the print zone, and use pallet adhesive suited to slick synthetics. For bags, an insert between front and back panels keeps ink from transferring through. Lined and padded jackets can change heat behavior in the dryer, so test a sample of the exact style.
Curing Nylon Without Damage (Ranges)
Published cure guidance for nylon ink systems in maker sheets commonly lands around 270 to 325°F (about 132 to 163°C) for the full ink film, often with dwell around one minute, and depends on your dryer and ink. Some additives are sold as lower temperature cure options. Nylon shells and linings can shine, pucker or scorch with too much heat, so stay inside the ink maker's range and measure the ink film, not just the dryer setting. If the blank is a polyester or polyester blend shell rather than nylon, see Dye Migration on Polyester and confirm fiber content with the garment supplier.
Testing Adhesion Before the Run
Catalyzed inks can keep bonding after they leave the dryer. At least one maker sheet states the cross-linking reaction needs time before an adhesion test is valid, so wait the period your ink sheet gives before you judge the sample. Then run a scratch or stretch check, a tape pull and a wash test on a sample of the exact garment. If adhesion fails, check in order: additive used and mixed correctly, coating removed, ink fully cured, and enough time allowed.
| Symptom | Likely cause to check | Fix to try |
|---|---|---|
| Ink peels or scratches off in sheets | No additive, wrong ratio, or water repellent finish | Confirm system and ratio; run the water drop test; clean print area |
| Shell shines or puckers | Too much heat or dwell for the fabric | Stay in the low end of the maker range; test the exact style |
| Ink hardens on screen mid-run | Pot life exceeded | Mix smaller batches; note mix time on the bucket |
| Passes on day one, fails later | Tested before cross-linking finished, or under cure | Wait the sheet's cure time, then retest wash and scratch |
Frequently Asked Questions About Screen Printing on Nylon (FAQ)
Can You Screen Print on Nylon?
Yes. Shops routinely print nylon jackets and bags with a nylon-rated ink system or an adhesion additive, a cleaned print area when the fabric has a water repellent finish, a cure inside the ink maker's range and an adhesion test before the run.
What Ink Sticks to Nylon?
A nylon-rated ink, usually a plastisol mixed with the catalyst its maker specifies, or a compatible plastisol with an adhesion additive. Regular plastisol on its own often fails on nylon. Keep the ink and additive from the same system unless the technical sheet approves a mix.
Do You Need a Catalyst for Nylon?
In most nylon jobs, yes. Maker sheets commonly call for an additive around 5 to 10 percent by weight with a pot life of roughly 4 to 8 hours after mixing. Use the exact ratio on your ink sheet.
How Do You Cure Ink on Nylon Jackets?
Cure the full ink film inside the maker's range, commonly around 270 to 325°F depending on the ink and additive, while watching the shell for shine or puckering. Measure the ink film temperature and test the exact jacket style, including linings.
How Do You Test Adhesion on Nylon?
Wait the cross-linking time your ink sheet gives, then run scratch, stretch, tape pull and wash checks on a sample of the same garment. If it fails, recheck additive, coating removal and cure before changing anything else.
Ratios, pot life and cure figures here are ranges drawn from published ink maker sheets and vary by product; always follow the technical data sheet and safety data sheet from your ink supplier.
Browse more guides in the DAX Learning Hub, and check cities and dates on the DAX show schedule when you are ready to talk nylon ink systems with suppliers in person.