DTF Transfer Safety
Customers ask us three things about DTF transfers: is it safe to handle, to press, and to wear. A fourth question, about children's clothing, is really about compliance. Here are the answers, what they rest on, and how to go deeper when you need to.
Safe to handle?
A transfer arrives dry and cured on its carrier sheet. Nothing spills, sheds or evaporates at room temperature, and ordinary handling needs no protective equipment. The ink it was printed with is classified by its manufacturer as not hazardous; the adhesive is a fully reacted thermoplastic; the sheet is PET.
The Product Safety SummarySafe to press?
At our recommended settings every material in a transfer is far below the temperature at which it breaks down. The hazards at a press are the press itself: hot platens and steam. Ventilate the room as a matter of good practice, and never burn or badly overheat a transfer.
Pressing safelySafe to wear?
Pressed, a transfer is a thin cured polyurethane film holding pigment, bonded to the fabric. The manufacturer's data for the ink reports that the criteria for skin irritation and skin sensitisation are not met. We publish that data instead of a promise, and we say which words we deliberately do not use.
Wearing and washingWhat about children's clothing?
Nothing in the manufacturer's data restricts the materials from that use. Compliance is a separate matter: the party placing a finished children's product on the market owns its testing and its certificate, and a transfer is one component of that product. We provide documents, answers, and a referral to the manufacturer on request.
Children's productsThree materials, one article
A finished transfer is made from three things we buy: a water-based pigment ink, a hot-melt adhesive powder, and a coated carrier film. Each is a chemical product with its own Safety Data Sheet from its manufacturer, and we publish a summary of each one here, with the manufacturer's name removed and a referral offered in its place.
The transfer itself is different. Under the OSHA Hazard Communication standard, a manufactured item with a fixed shape, whose use depends on that shape, and which does not release more than trace amounts of a hazardous chemical under normal conditions of use, is an article. Articles do not carry Safety Data Sheets. That is why no DTF vendor can hand you an SDS for a transfer, and why the useful answer to "what is it made of" is a composition rather than a hazard sheet.
Between the print and the garment, some of the ink leaves and some stays. The water and the humectants are driven off during drying and curing. The pigment and the polyurethane binder remain as the printed film; the adhesive powder melts into a layer beneath it; and the carrier film is peeled off and discarded. The material pages show which is which, component by component.
What a transfer is made of
Ink
Water-based pigment ink: what is in it, what leaves during curing, what stays in the printed film, and the two pigments that carry a listing.
Adhesive powder (TPU)
The thermoplastic polyurethane that bonds the print to the garment: fully reacted, what that means, and what it does at the press.
Carrier film (PET)
The sheet a transfer arrives on. It is peeled off and discarded; here is what it is made of and how to dispose of it.
Using transfers
Pressing safely
Heat, ventilation and what the materials do at our recommended settings compared with the temperatures where they break down.
Wearing and washing
What a finished transfer is once it is on the garment, what the manufacturer's data says about skin contact, and what we do and do not claim.
Children's products
Who is responsible for what when a transfer goes on a child's garment, what we provide, and how to request documents and a referral.
Documents
Safety documents and supplier referral
What we publish, why it is a summary rather than a Safety Data Sheet, what we do not publish, and how to be referred to the manufacturer.
Product Safety Summary
One printable document for the finished transfer: composition by material, classification of the inputs, handling, first aid, fire, disposal and regulatory status.
Questions we are asked
At our recommended press settings the ink film, the adhesive and the carrier film are all well below the temperatures at which they break down. The hazards at a heat press are the heat press itself: hot platens, steam from damp garments, and a workspace that should be ventilated as a matter of good practice. Badly overheating or burning any transfer can release decomposition gases, and the pressing page names them.
Once pressed, a transfer is a thin cured polyurethane film carrying pigment, bonded to the fabric by a thermoplastic polyurethane adhesive. The manufacturer's data for the ink reports that the classification criteria for skin irritation and skin sensitisation are not met. We do not describe transfers with the reassuring words some vendors use, because each of those is a claim about a test that has not been run on a finished transfer; the documents page lists every phrase we avoid and the reason, and the wearing page explains what we say instead.
Nothing in the manufacturer's data restricts the materials from that use. Compliance is a separate question: in the United States the manufacturer or importer of a finished children's product is responsible for its testing, its Children's Product Certificate and its tracking label, and a transfer is one component of that product. We provide our safety documentation, answer specific questions and refer you to the manufacturer on request. We do not certify transfers for children's products, and we recommend against decorating children's sleepwear unless the finished garment is tested to its own flammability standard.
A finished transfer is a manufactured article, so there is no Safety Data Sheet for it and none is required. The ink, adhesive powder and film we buy each have one. We publish summaries prepared from those documents, with the manufacturer removed, on this site. If you need the manufacturer's own sheets, open a help request and ask for a supply-chain referral; a person on our team will connect you with them.
Our materials and the way we run them are part of how we compete, and our supplier relationships are confidential. Everything a safety reader needs is published here: the composition, the classification, the physical data, first aid, fire and disposal guidance, and the dates of the documents it came from. The one thing we withhold is the name, and we will put you in direct contact on request.
Three things. A water-based pigment ink, which after curing leaves a thin polyurethane film holding the pigment. A hot-melt adhesive powder of thermoplastic polyurethane, which melts at the press and bonds the print to the fabric. And a coated PET carrier film, which carries the print to you and is peeled off and discarded after pressing. The ink page, the adhesive page and the film page give the composition of each with the manufacturer's reported percentages.
The ink is a water-based pigment ink and the adhesive is a thermoplastic polyurethane. Neither is formulated with PVC, and neither needs a phthalate plasticiser the way plastisol does. That is a statement about what the materials are made from, taken from the manufacturer's composition data. It is not a test result, and we do not describe transfers as free of anything until a finished transfer has been tested.
Two pigments in our ink set carry Proposition 65 listings: titanium dioxide in the white and carbon black in the black. Both listings are specifically for airborne, unbound particles of respirable size, which describes breathing the loose powder. In the ink the pigment is dispersed in liquid and in a cured transfer it is bound inside a polyurethane film. Whether a warning is required on a finished product sold in California is a determination for whoever sells that product; we publish the composition data that determination needs and will help with questions.
The same thing that happens to any plastic. The carrier film is PET, and heating or burning it can release acetaldehyde, carbon monoxide and carbon dioxide. The adhesive is a polyurethane, and burning it can release carbon oxides and nitrogen oxides. Neither happens at our recommended press settings, which are far below those temperatures. If a transfer or garment is scorched, ventilate the area and discard it.
No. What we publish is the manufacturer's data for each input, which is what we have. We have not commissioned an independent laboratory test of a finished transfer for lead, phthalates or skin effects. If your application needs one, tell us; it is the most useful thing we could add, and knowing who needs it helps us decide when.