Run your thumb across the front of an old tee and you are reading a manufacturing process. A graphic that feels like nothing at all, as though the colour lives inside the cotton, was made one way. A graphic with a slightly rubbery surface that sits on top of the fabric was made another. A glossy, almost plastic image that cracks in a fine grid, or a fuzzy raised letter that has worn bald at the edges, each points to a different technique and, often, to a different era.
Understanding how vintage graphics were made is one of the most useful skills you can have when looking at vintage tees and other printed merch. It helps you judge condition, predict how a print will age, care for it properly and read it as one more clue to when and how a shirt was produced. This guide walks through the main methods, what each feels like, and how each one tends to wear over the years.
Screen printing, the method behind most of it
Screen printing is the backbone of graphic tees. The process is old and fairly simple in principle. A fine mesh is stretched over a frame, and a stencil blocks the mesh everywhere except where the design should go. Ink is laid on top, and a rubber blade called a squeegee pushes it through the open areas onto the fabric below. Each colour usually needs its own screen, lined up carefully so the colours meet in the right places.
That last detail matters for reading old shirts. A three-colour design needed three screens and three passes. If the screens were slightly out of line, you get a thin gap or overlap where colours should meet, called misregistration. A little of it is common on older shirts and is part of their character. It is not, on its own, a sign of a fake or a fault.
Screen printing can use several kinds of ink, and the ink is what gives the print its feel. The three you will meet most often in vintage are plastisol, water-based and discharge.
Plastisol: the ink that sits on top
Plastisol is a PVC-based ink that stays liquid until it is heated, at which point it cures into a flexible, slightly rubbery layer. It became the dominant ink for tees in North America over the second half of the twentieth century, and it is behind a large share of the graphics from the eighties and nineties.
You can usually recognise plastisol by touch. It sits on the surface of the fabric, with a faint ridge at the edges of the design. On dark shirts, it was often printed over a white underbase so the colours would appear bright, which makes the print feel thicker still. Large areas of plastisol, such as a big back print or all-over design, can feel almost like a sheet of vinyl.
How plastisol ages
Plastisol's most characteristic ageing pattern is cracking. As the shirt is washed, stretched and dried, the ink layer develops fine lines, often in a web or grid. Light cracking can look wonderful, giving the graphic a worn, textured surface. Heavy cracking turns into flaking, where pieces of ink lift and fall away. Heat, especially from dryers and irons, speeds this process considerably.
Plastisol prints also tend to keep their colour well even as the shirt around them fades. That contrast, a bright print on a faded tee, is a familiar look on nineties vintage.
Water-based ink: colour that soaks in
Water-based inks work differently. Instead of sitting on top, they soak into the fibres of the fabric and dry into them. The result is a print with a much softer hand. Run your fingers over it and you may barely feel it at all.
Water-based printing has a long history and was common on older tees, before plastisol took over, and it has come back into fashion in more recent decades because of its softness. On vintage shirts, you often see it on lighter-coloured fabrics, since water-based inks show best on pale backgrounds and are less opaque on dark ones.
How water-based prints age
Because the ink is part of the fabric, water-based prints do not crack the way plastisol does. Instead they fade, often along with the shirt itself. An old water-based print might look soft, slightly washed out and evenly worn, almost like a faded photograph. Many people find this the most attractive kind of aged print.
The feel of a print under your thumb is often a better guide to how it was made than anything you can see from across the room.
Discharge printing: removing colour instead of adding it
Discharge printing is the most surprising of the methods. Instead of laying colour onto the fabric, the ink contains an agent that removes the dye from the shirt where it is printed. On a black cotton tee, a discharge print might reveal a pale, natural-coloured design underneath. Pigment can also be added to the discharge ink so the design turns a specific colour as the original dye is removed.
Discharge only works on certain fabrics, mainly cotton dyed with dyes that can be discharged. On blends or some dyes, it produces unpredictable results, which is part of why it was a specialist technique rather than the default.
Discharge prints have almost no feel at all, since there is no layer of ink on top. They look slightly soft and imperfect at the edges, and they age much like the fabric itself, without cracking. Because the colour change happens in the shirt's own dye, a discharge print on a faded black tee often blends naturally with the surrounding fade.
Heat transfers: the iron-on era
Heat transfers are a different approach entirely. The design is printed onto special paper first, then pressed onto the shirt with heat, which releases the ink or film from the paper onto the fabric. Through the seventies and into the eighties, shops and kiosks offered walls of transfer designs that could be pressed onto a blank tee while you waited, often with custom lettering added in flocked or felt letters.
Transfers have a distinctive look and feel. Many have a glossy, smooth surface, and some show a faint rectangular outline of clear film around the design, especially on older or cheaper transfers. They can feel stiff and slightly plastic.
How transfers age
Transfers tend to crack in a fine pattern, sometimes peel at the edges, and occasionally yellow over time. Heavy wear can leave a ghostly outline of the film where the design has partly gone. Flocked letters, with their velvety surface, wear down at the high points and can lose their fuzz entirely after enough washes.
Specialty finishes and printing tricks
Beyond the main methods, printers used a range of specialty inks and techniques, many of them closely tied to particular periods.
- Puff ink: a plastisol additive that expands when heated, creating raised, spongy graphics. Popular in the eighties, and prone to cracking and flattening over time.
- Glitter and metallic inks: plastisol with metallic flakes or glitter, used for shine. These often shed or dull with washing.
- Foil: a thin metallic film applied over an adhesive print, giving a mirror-like finish that wears quickly.
- Halftones: designs built from tiny dots, allowing printers to suggest shading and gradients with a single colour.
- Process and simulated process printing: techniques that combined several colours of dots to recreate photographs or detailed artwork, common on late-eighties and nineties shirts.
- Glow-in-the-dark ink: a novelty finish that turns up on concert and horror-themed shirts, among others.
Specialty finishes are useful clues because they were fashionable at certain times. A puff-ink logo or a heavy metallic print fits naturally into the eighties, for example. But they were also used before and after their peak, and reproductions sometimes copy them, so treat them as context rather than proof.
Reading a print on the rack
When you are holding a vintage tee, a few quick checks can tell you a lot about its graphic.
- Feel the surface. Raised and rubbery suggests plastisol. Flat and soft suggests water-based or discharge. Glossy and stiff suggests a transfer.
- Look at the inside. Water-based and discharge inks sometimes show slightly through to the inside of the shirt. Plastisol usually does not.
- Stretch gently. Plastisol cracks open when stretched; water-based prints move with the fabric.
- Check the edges. Transfers may show a film outline. Screen prints may show slight misregistration between colours.
- Consider the whole shirt. The fabric, stitching, label and print together tell a more reliable story than any single detail.
None of these checks proves a date. A water-based print could be from the seventies or from last year. A plastisol print could be from the eighties or a recent reprint. What they do is help you understand what you are looking at, so the rest of your judgement has something solid to stand on.
Caring for each type of print
The method behind a graphic shapes how you should look after it. Plastisol and transfers dislike heat, so wash them inside out in cold water and skip the dryer. Puff and foil prints are especially fragile, and some people choose to hand wash them only. Water-based and discharge prints are more durable in terms of cracking, but they will keep fading with each wash, so cold water and gentle cycles still help.
Never iron directly over any vintage print. If a shirt needs pressing, turn it inside out and use low heat, or use a steamer from the back.
Seeing graphics with new eyes
Once you know how vintage graphics were made, you start to notice them everywhere: the soft, sunken print on an old souvenir tee, the cracked plastisol on a nineties band shirt, the faint film outline of a seventies iron-on. Each tells you a little about the shirt's life and how to treat it in yours.
Next time you are going through new drops at Queen St or Square One, or any rack of vintage merch, slow down and run your thumb across a few prints. It is the quickest way to learn, and it turns a casual browse into something closer to reading.
