Dye Sublimation Printing
What is Dye Sublimation Printing ?
Dye sublimation printing (often called dye-sub) is a digital printing technique that uses heat to transfer dye onto various materials. It is especially popular for high-quality, full-color images on polyester fabrics, apparel, ceramics, mugs, mouse pads, signs, banners, and other polymer-coated items
Sublimation Phone Cases vs. Traditional Sublimation
Traditional sublimation: Many substrates already accept sublimation (polyester fabric, pre-coated ceramics). Coatings are generic; Sublimation phone cases: Require a dedicated sublimation coating applied to the case surface.
Traditional sublimation: Usually single-material (pure ceramic, pure aluminum, 100% polyester). Sublimation phone cases: Often use hybrid materials like PC+TPU — PC provides a flat print surface, TPU adds flexible edges for drop protection. This combination is rare in traditional sublimation.
Why Sublimation Phone Case Is Popular
Sublimation Blanks VS Printed Sublimation Cases
Bulk buy printed or blank sublimation phone cases, to boost your phone case business.
Sublimation Phone Cases vs Other Printing Methods
There are four main printing techniques for custom phone cases: Sublimation, UV , IMD, Screen Printing, and DTF (Direct-to-Film). Each has its own strengths and limitations
| Printing Method | Core Process | Edge-to-Edge / Wrap Coverage | Best Material / Surface Compatibility | Color & Photo Capabilities | Ideal Production Scale |
| Dye Sublimation | Ink turns to gas and infuses directly into a polymer-coated surface via heat. | Excellent (wraps smoothly around curved edges using a 3D vacuum press). | Polymer-coated hard blanks (white or light-colored plastic/metal). | Excellent full-color photographic prints and gradients; cannot print white ink. | Low to medium custom runs, on-demand printing. |
| UV Printing | Pigment ink is sprayed and instantly cured/hardened on top of the surface using ultraviolet light. | Mostly flat (back-surface focused), though specialized rotary UV exists. | Extremely versatile (works on hard plastic, TPU, silicone, dark, or clear cases). | Excellent; supports opaque white ink layers and multi-pass 3D textured effects. | On-demand single units to small/medium batches. |
| IMD / IML (In-Mold Decoration) | A pre-printed film is placed inside an injection mold, fusing the graphic into the structural plastic during molding. | Excellent full-body wrap integrated seamlessly into the case structure. | Raw plastic resin injection-molded during manufacturing. | High-resolution full-color graphics encapsulated under a protective clear plastic layer. | Mass production (thousands to millions of units). |
| Silk Screening | Ink is squeegeed through a physical mesh stencil directly onto the case and cured. | Limited to flat surfaces or simple one-color curvature. | Standard plastic, rigid shells, or silicone cases. | Limited to solid spot colors (Pantone matching); multi-color prints require multiple screens. | High-volume mass production of simple logos/designs. |
| DTF (Direct to Film) | Ink is printed onto a PET film, coated with adhesive powder, and heat-pressed. | Not suitable for rigid cases (heat and pressure will melt/warp plastic or TPU cases). | Fabric-based accessories only (e.g., canvas phone pouches, fabric lanyards, straps). | Excellent full-color photographic prints on textile accessories. | On-demand to small-batch fabric accessory custom runs. |
Why Brand Clients Work With Prosub
By bringing together product development, branding support, packaging coordination, and manufacturing execution, we give brands the confidence to launch successfully.
Looking for a Trusted Brand Partner
Looking for a custom phone case factory that can print your own logo and designs? We can help. Our team offers one-stop customized services.