01293 518733
hello@kelgray.co.uk
Coding & Marking
Thermal Transfer Overprint
High-resolution TTO printing delivers crisp variable data on flexible films, sustaining reliable, fast packaging lines.
4.8 Google Reviews
TTO Labelling Overview
Kelgray engineers thermal transfer overprint systems that apply durable, high-resolution codes onto flexible packaging at production speed. We match printer, ribbon and integration method to your film, machine type and throughput, then support everything—from installation and training to maintenance—so codes stay clear, consistent and reliable day after day.
Service information
We deliver TTO as a complete, production-ready service: application review, substrate and artwork-window assessment, equipment selection, bracketry, and integration to your flow wrapper, VFFS, HFFS or labeller.
We configure messages, permissions and print triggers to reduce operator error, then commission on-line to prove code clarity at speed. Reliability comes from getting the details right & correct ribbon grade, tension, print pressure and timing, so you avoid ribbon breaks, smudging and missed prints.
We train operators and engineers, set simple daily checks, and offer preventative maintenance and responsive support to maximise uptime. Managed consumable supply keeps specifications consistent, helping print quality stay stable between deliveries.
Where needed, we connect to your ERP or MES for centrally controlled data. By printing variable data on demand, you can reduce reliance on pre-printed packaging and limit waste when dates, batches or artwork change. Our ISO 9001 accreditation and SafeContractor approval reinforce a disciplined, safe approach.
Why this matters and why we’re the right partner :
Reliable Line Operation
Prevent costly line stops. We engineer triggers, mounting and settings that keep print stable at speed, helping you avoid missed codes, ribbon breaks and rework, day after day across shifts.
Reliable Code Scanning
Protect traceability. We tune print density and placement for crisp, scannable codes and legible dates on films and labels, then document settings so your teams can reproduce results reliably, confidently.
Reliable Print
Keep performance consistent. We specify ribbon grades, widths and backcoats for your substrate, then support planned supply so you can switch lots without surprises, protecting adhesion, durability and uptime long-term.
Custom Line Integration
Fit it to your line, not the other way around. We design brackets and interfaces for your machinery, deliver safe installs, and provide ongoing support with a quality-led, documented approach.
Other options within Coding & Marking
Other options within Coding & Marking: If you’re coding directly onto products, containers or outer cases, our Inkjet & CIJ solutions including Large Character Printing deliver non-contact printing across varied substrates.
Trusted by leading brands
Our Frequently Asked Questions
Here are all of the answers to your most common questions around TTO:
A: TTO is used to print variable information—such as dates, batch codes, barcodes and simple graphics—onto flexible packaging films and labels during production. It’s typically chosen when you need crisp codes on film, consistent quality at speed, and clear traceability without slowing your packaging line.
A: Yes, when the message is designed correctly and the print is positioned on a suitable print window. We help you set the right code size, contrast and placement, and we can validate scan performance so barcodes read reliably in real-world handling.
A: TTO is most commonly used on flexible films and label materials, including many coated and high-barrier packs. It’s often integrated into flow wrappers, VFFS/HFFS machines, tray sealers and labellers where the film is presented smoothly for printing.
A: We mount the printer and printhead to suit your machine, then synchronise printing using triggers such as a product sensor and, where needed, an encoder for accurate timing. We document the set-up and train operators so changeovers stay controlled and repeatable.
A: TTO uses thermal transfer ribbon. The right grade and specification matter because they influence adhesion, durability and ribbon life. We define the ribbon requirements for your substrate and process, then help you maintain consistent supply and controlled substitutions.
A: Most issues come from incorrect ribbon selection, misalignment, inconsistent film tension, or settings that don’t match line speed. We prevent these by commissioning on-line, setting simple daily checks, and offering preventative maintenance and responsive support.