Ever wondered why some custom shirts keep their colour while cheap prints crack after a few washes? Sublimation printing takes a different approach because the ink becomes part of the material instead of sitting on top of it. 

The result can be sharp, colourful and surprisingly durable, which makes the method popular for branded apparel, lanyards, promotional products and event merchandise. It also has clear limits, especially when cotton, dark fabrics or untreated surfaces enter the picture. 

This guide explains how sublimation works, which materials suit it, what it can produce, and what affects the cost for New Zealand orders.

What Is Sublimation Printing?

Sublimation printing is a heat-based method that dyes a compatible material instead of placing a separate layer of ink on top of it. The process starts with a digital design, which is printed in reverse onto special transfer paper with sublimation ink. That paper is then pressed against a polyester fabric or a product with a suitable polymer coating.

Under controlled heat and pressure, the solid dye changes directly into a gas. The gas enters the polyester fibres or polymer surface, where it bonds with the material. Once the product cools, the dye returns to a solid state and becomes locked into that surface.

A custom polyester lanyard is a good example. A logo, photograph, gradient and several colours can run across the strap without creating a thick patch that you can feel with your fingers. The fabric still feels like fabric because the design sits within the fibres rather than above them.

That difference is important. It allows sublimation printing to reproduce fine details, photographic images, gradients and edge-to-edge colour without the raised or rubbery finish associated with some transfer methods.

How Does Sublimation Printing Work?

The process sounds technical, but the basic idea is simple: the design moves from a digital file into the material itself through heat and pressure.

1. The artwork is prepared digitally.
   The logo, photograph, pattern or full-colour design is sized to match the printable area of the product. Colour, placement and resolution matter here because the finished print can only be as accurate as the artwork supplied.
2. The design is printed onto sublimation transfer paper.
   Special sublimation ink prints the artwork in reverse, almost like a mirror image. This allows the design to appear the correct way around after transfer.
3. The transfer is placed against the product.
   The printed side of the paper sits directly against a compatible polyester fabric or polymer-coated surface.
4. Heat and pressure are applied.
   A heat press holds the transfer firmly against the material. Temperature, pressure and press time vary by product, so a polyester shirt may require different settings from a smaller promotional item.
5. The dye enters the material.
   The heat converts the dye into gas, which penetrates the polyester or polymer surface and bonds with it.
6. The product cools and the design sets.
   As it cools, the dye becomes solid again and remains inside the material.

For a practical example, our Dye Sublimation Lanyards suit conferences, staff identification and large events where the lanyard itself needs to carry more than a small logo. The pressed polyester can accommodate full-colour branding, gradients and photographic designs, so businesses can use the available strap space for detailed artwork that would be difficult to reproduce with a simpler print method.

What Materials Does Sublimation Printing Work On?

The material matters just as much as the artwork. Sublimation printing works best on polyester and on hard products that have a purpose-made polymer coating, because the dye needs a compatible synthetic surface to bond with properly.

Polyester

Polyester is the most reliable fabric for sublimation because its synthetic polymer fibres accept the dye once heat opens the structure of the material. After the product cools, the colour becomes part of those fibres rather than a separate layer above them.

That makes polyester a strong choice for sportswear, uniforms, lanyards, event merchandise and branded accessories, especially when the design includes several colours, gradients or large print areas.

Our Dye Sublimated Tees are a useful example. They use 210 GSM polyester and can be printed edge to edge across full panels or selected sections, which gives sports teams, event crews and businesses far more room for custom artwork than a small chest logo alone.

Polyester Blends

Polyester blends can also work, but the result depends heavily on how much polyester is in the fabric. The dye bonds to the polyester fibres, not the cotton or other natural fibres mixed with them. 

As the polyester percentage drops, colours can look softer, faded or intentionally vintage rather than fully saturated.

Polymer-Coated Products

Sublimation is not limited to fabric. Certain ceramic, metal, glass and other hard products can also accept sublimation if they have been manufactured or coated with a suitable polymer layer.

That distinction matters. An ordinary ceramic mug, metal panel or glass item does not automatically become suitable for sublimation simply because it can withstand heat. The surface must be specifically prepared to accept and hold the dye.

What Can You Make With Sublimation Printing?

Once you understand which materials accept the dye, the range of possible products becomes much clearer. Sublimation printing is especially useful for items with large polyester surfaces, which is why it appears across custom shirts, sportswear, uniforms, lanyards, event merchandise, promotional accessories and other branded textiles.

The process also works well on products that need colour across a longer or less conventional print area. Our Sublimated Dog Lead, for example, uses durable polyester and provides a full-length sublimation area of 1600 x 20 mm. That gives pet brands, veterinary businesses, clubs and event organisers space for repeated logos, patterns or more colourful artwork along the lead instead of restricting the design to one small position.

Smaller textile products can use the same process. The Accessories Sublimated 2 Panel Face Mask has a printable outer surface designed for full-colour sublimation, which shows how detailed branding can also be applied to compact promotional accessories.

The common factor is not the product category. It is the presence of a compatible polyester or polymer surface that can properly accept the sublimation dye.

Sublimation Printing vs Other Printing Methods

Here is the quick difference between the main options:

Sublimation printing stands out for gradients, photographs, detailed artwork and large print areas on polyester.

Conclusion

Sublimation printing is a strong choice when you need detailed, full-colour artwork on polyester or specially coated products. The dye becomes part of the material, which helps produce a smooth finish with no thick layer sitting on top. 

It works especially well for branded apparel, lanyards, event merchandise and other promotional products where colour and print coverage matter. 

The key is choosing a product that is actually compatible with the process. If you are unsure which option suits your artwork or budget, our team can help you compare suitable products and prepare a quote for your New Zealand order.

Frequently Asked Questions

Can you use sublimation printing on cotton?

Standard sublimation does not work properly on untreated cotton because the dye needs polyester or another compatible polymer surface to bond with. A polyester blend may accept some colour, but the result usually becomes less vibrant as the polyester content decreases.

Can you sublimation print on dark fabric?

Sublimation works best on white or light-coloured polyester. The ink is not opaque, so dark fabric can interfere with the colours and make the design difficult or impossible to see clearly.

Does sublimation printing crack or peel?

The design does not normally crack or peel like a surface-applied vinyl layer because the dye becomes part of the material itself. Product quality and proper care still affect how well the finished item lasts.

Is sublimation printing permanent?

On a suitable polyester or polymer-coated surface, sublimation produces a long-lasting print that is bonded into the material. Heavy UV exposure, repeated washing and poor care can still affect colour over time.

Is sublimation printing expensive?

The cost depends on the product, quantity, print area, construction, artwork and turnaround time. Full-colour artwork does not necessarily increase the price in the same way it can with methods that require separate setup for each colour.

What is the best material for sublimation printing?

Polyester is the most reliable fabric for sublimation printing, especially white or light-coloured polyester with a high polyester content. Hard products also need a purpose-made polymer coating before they can accept sublimation dye properly.