March 2026

What Is Digital Sublimation on Packaging?

Digital sublimation is a decoration process that transfers CMYK artwork onto glass, aluminium, zamac and ceramic substrates using heat and pressure. The result is a permanent, photographic-quality image fused directly into a primed surface. No screens. No sleeves. No clichés.

The technique has existed in textiles for decades. Applying it to three-dimensional packaging — perfume bottles, flacons, spirits bottles, caps, candle jars — required a fundamentally different engineering approach. ATIU developed a proprietary methodology to do exactly that, at industrial scale, from two production plants in Verona, Italy.

How the process works

The workflow has four stages.

1. Surface preparation. Each component receives an application of primer. The primer type determines the final aesthetic: glossy, matte, soft-touch or ceramic-effect. It also serves as the receptor layer for sublimation ink.

2. Digital printing. Artwork is printed in CMYK at up to 1200 dpi onto a transfer medium. There is no screen setup, no colour separation by hand, no physical tooling. The file goes from design software to print.

3. Heat transfer. The printed transfer is applied to the primed component. Under controlled heat and pressure, the sublimation inks convert from solid to gas and penetrate the primer layer. The image becomes part of the surface, not a coating on top of it.

4. Finishing. Optional post-processes include UV protective coatings, hot stamping with foils from partners such as KURZ, or selective varnish for tactile contrast.

What makes it different from other decoration methods

Screen printing requires a dedicated screen for every colour. A six-colour design needs six screens, six passes and six registration points. Sublimation prints all colours in a single pass.

Sleeve labelling wraps a printed plastic film around the container. It adds material. It creates a recycling complication — the sleeve must be removed before the glass enters the cullet stream. Sublimation adds no separate material layer.

Direct ink-jet printing applies UV-curable ink directly to the surface. It works well for flat or cylindrical shapes. Complex geometries — tapered bottles, shoulder curves, concave surfaces — challenge ink-jet heads that must maintain a fixed distance from the substrate. Sublimation uses a flexible transfer that conforms to the shape.

Resolution and coverage

At 1200 dpi, sublimation achieves photographic detail. Gradients are smooth. Fine text is legible at small point sizes. Photographic images reproduce faithfully, including skin tones and product photography.

Coverage is 360°. The decoration wraps the entire surface of the component, from base to neck on a bottle, across every face of a cap. There are no seams, no overlap marks, no undecorated blind spots.

No screens, no clichés, no minimum colour count

Traditional decoration pricing scales with colour count. Every additional colour adds cost. Sublimation pricing is independent of colour count. A one-colour design and a full-colour photographic design cost the same to decorate.

This changes the design conversation. Brand designers are free to use gradients, photography, complex illustrations and unlimited palettes without cost escalation. Pantone matching is achieved through CMYK calibration profiles, not ink mixing.

Compatibility with AI-generated artwork

AI image generation tools produce high-resolution, full-colour raster artwork. This output maps directly to the sublimation workflow. There is no intermediate step to convert a raster image into separated vector screens.

For brands experimenting with AI-generated packaging concepts, sublimation is the most efficient path from digital file to decorated component. Concept-to-prototype timelines compress from weeks to days.

Substrates and applications

Sublimation works on any substrate that accepts a primer coat. In practice, ATIU decorates:

Glass — perfume bottles, flacons, spirits bottles, wine bottles, olive oil bottles, candle jars. Glass supplied by manufacturers including Saverglass, Heinz-Glas, Verescence, Bormioli Luigi and Stoelzle.

Aluminium — caps, closures, tubes.

Zamac — weighted caps for premium perfumery.

Ceramic — decorative containers and vessels.

Sustainability credentials

Sublimation eliminates plastic sleeves and adhesive labels. Decorated glass remains mono-material and enters standard cullet recycling streams without manual separation. No VOC solvents are used in the transfer process.

ATIU has maintained zero-net CO2 operations since 2023. The process was recognised with a Pentawards Gold 2025 award in the Sustainability category.

Industrial scale

This is not a craft process. ATIU operates two production plants in Verona, serving groups such as Pernod Ricard, PUIG and LVMH. Volumes range from short runs for limited editions to production runs of hundreds of thousands of units. ISO 9001 certified. EcoVadis Committed.