Greener, Safer Prints: What's in the Ink, and Why Less Gets Wasted

Clothing sits against your skin all day. So it's fair to wonder what's actually in the print on the front of it, and what it cost the planet to put it there. More and more customers ask us, especially parents ordering for children's clubs and businesses with sustainability targets of their own.

This is an honest look at what goes into a DTF print: the certification that matters and what it really means, how modern print software cuts waste, where DTF still has room to improve, and the simple habit that makes any printed garment greener.

The quick answer: Epson's DTF inks are certified under OEKO-TEX ECO PASSPORT, an independent standard for textile chemicals, and are non-toxic. Printing to order means no screens to wash out and no piles of unsold stock, and smart software packs designs tightly onto the film. But the greenest feature of all is durability: a print that lasts 50 to 100 washes keeps a garment in use for longer.

What's in the ink?

The colour in a DTF print comes from pigment inks, backed with white and held on by a polyurethane glue. The question most people really mean is: has anyone independently checked it's safe?

For Epson's DTF inks, the answer is yes. Epson states that its UltraChrome DF inks, once applied to fabric and properly fixed, have passed OEKO-TEX ECO PASSPORT, and that they are non-toxic and compliant with CPSIA, the US product-safety law that limits substances like lead in children's products.

So what is ECO PASSPORT?

OEKO-TEX is an independent testing and certification system that's been around for decades and is widely recognised across the textile industry. ECO PASSPORT is the part of it that checks the chemicals, dyes and inks used to make textiles, before they ever reach a garment.

One honest clarification. ECO PASSPORT certifies the ink, not the finished garment; OEKO-TEX has a separate label, STANDARD 100, for finished textiles. So the accurate way to put it is: the inks used are ECO PASSPORT certified, rather than "this T-shirt is certified". We think it's better to be precise than to overclaim.

Less waste, by design

DTF designs are printed onto rolls of film before being pressed onto garments. Lay designs out by hand and you end up with gaps between them, film that's paid for, printed around and thrown away. Modern print software (called a RIP) does a cleverer job: it fits designs together like a jigsaw, automatically, using far more of every roll.

The same software saves ink as well. It can thin the white base layer where full opacity isn't needed, which one software maker says cuts white-ink use by up to 30%, and it can remove colours from the design that match the garment, so the shirt itself does that job. And Epson's dedicated DTF printer draws 80 watts or less while printing, and 20 watts or less when asleep.

Printing to order: no screens, no mountains of stock

Traditional bulk printing pushes businesses to over-order: the more you print, the cheaper each shirt becomes, so it's tempting to order 500 when you need 300. The leftovers end up in boxes, and eventually in the bin.

DTF has no set-up cost, so you can order what you actually need, and top up later. There are also no screens to coat with emulsion, expose and wash out with cleaning chemicals between jobs, and, unlike direct-to-garment printing, no pre-treatment spray on dark garments.

The honest bits

No printing method is impact-free, and we'd rather tell you straight:

• Film and powder are single-use. The film carrier is peeled off and discarded after pressing. Smart layout reduces how much is used, but doesn't eliminate it.
• It's a layer, not a dye. A DTF print sits on the fabric as a thin, flexible layer of ink and glue, rather than dyeing the fibres themselves the way sublimation does.
• Powder needs handling with care. The glue powder isn't something you want to breathe in, so professional print rooms handle it with protective kit and extraction.

The greenest feature: a print that lasts

Here's the thing that matters most. The most sustainable garment is the one that gets worn for years instead of binned after a few washes because its print has cracked. A DTF print lasting 50 to 100 washes keeps a garment wearable for far longer than one that peels after 20.

And the care habits that make a print last are good for the planet too:

• Wash at 30 °C. Cooler washes protect the print and use less energy than hot ones.
• Line dry when you can. It's the kindest option for the print, and it skips the tumble dryer altogether.
• Wash inside out, skip the softener. The print lasts longer, so the garment does too.

Better for people, kinder to the planet

At Print Press we use Epson ink technology, print to order, and prepare every design so it uses no more ink than it needs, with garment colours knocked out and big areas broken into breathable dots. The result is a print that's safer to wear, wastes less to make and lasts longer once it's yours.

Want to know more about the materials in your order? Ask us at printpress.clothing; we're always happy to explain.