We want a soft-feeling print on dark cotton tees. Is a discharge print the right choice?
Discharge ink removes dye from the fabric instead of covering it, so the print has little feel. It works only on suitable dyed cotton, so test your actual fabric and colour first.
Our black tees will carry a large front graphic. Plastisol prints feel heavy. The decorator suggests a discharge print for a soft hand. What does it do and what should we check?
Main answer
A discharge print does not lay a layer of ink on the fabric. The ink contains an agent that removes, or discharges, the dye in the printed area, and the design shows as the lighter colour that is left or as a pigment added to the discharge paste. Because there is little or no film on top of the fabric, the print has a soft hand and good breathability, which is why brands choose it for large graphics on dark tees.
What it works on
Discharge printing works on fabric dyed with dyes that can be removed, usually cotton and other cellulosic fabrics dyed with suitable dyes. It does not work on polyester, and not every dye on cotton discharges well. Ask the decorator for results on your actual fabric and shade, since the colour left after discharge depends on the dye. A black tee can discharge to a warm off-white or a tinted shade rather than a pure white, unless a pigment is added.
Fabric and dye lot
Because the print result depends on the dye, ask the mill or dye house to confirm the dye system is suitable and consistent between lots. A different lot of black may discharge differently. Use a strike-off on a sample cut from the bulk fabric before printing, and keep it as the reference.
Checks before bulk
Wash samples with a named procedure such as ISO 6330 and check the print for fading or edge changes. Check colour fastness to washing with ISO 105-C06 and to rubbing with ISO 105-X12, both dry and wet, in the discharged area and the unprinted area, since removed dye can leave the area more fragile in appearance. Check the print is even, with no patchy or halo areas.
Practical points
Discharge processes can leave a residual odour, so check that printed garments are well washed or aired before packing. Colours are limited, since pigment colours added to discharge paste can look different on different base shades. Large solid areas may show slight variation from piece to piece, which you should treat as a normal range and show in the approved sample.
What to specify
Write the fabric, dye system, discharge type, colours, print size and position and the approved strike-off as the bulk reference.
Sources and further reading
- ISO 105-C06:2010 — Colour fastness to domestic and commercial laundering
- ISO 105-X12:2016 — Colour fastness to rubbing
- ISO 6330:2021 — Domestic washing and drying procedures for textile testing
Standards and rules are summarised from their published scope or official guidance. Use the current edition and confirm requirements for your market.
Three perspectives on this question
Purchasing perspective
I'd ask the decorator to confirm in writing that the dye in our fabric is suitable for discharge, and to print a strike-off on the bulk cloth.
Merchandising perspective
A soft large graphic on a dark tee feels premium, but the colour left after discharge is not a pure white unless we plan for it.
QC perspective
We'd compare printed pieces with the approved strike-off, wash-test samples and check evenness of large solid areas.
Working on a similar program?Send your tech pack, fabric references and test requirements. We reply with a quote and the questions we need answered.
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