Personalized Hard Hats — All Four Sides in Under 60 Seconds
Four sides, four colors, and an ask for per-helmet variable data — on a process built around plates and screens.
Application profile: a leading North American manufacturer of workforce safety helmets supplying construction, energy, utilities, and heavy-industrial end customers. Annual volume measured in the hundreds of thousands of units; SKU mix spans dozens of corporate color and logo combinations, with growing demand for per-worker personalization (name, title, ID number, crew assignment) on the same hard hat shells.
Traditional hard hat decoration relies on a mix of pad printing, screen printing, and after-market vinyl decals — each requiring plates, films, screens, ink mixing, and a changeover between every color and every surface. A four-color, four-sided helmet historically routed through multiple stations, with the part being repositioned (and re-registered) at each one. Cycle times stretched into minutes per unit, every SKU change cost labor and materials, and the process essentially could not support job-lot personalization without grinding the line to a halt.
Layered on top: customers were increasingly asking for variable data — names, titles, crew IDs — printed directly on the helmet shell rather than applied as a sticker. A decoration process built around fixed plates and screens has no clean answer for that.
A single XD-70 station, a six-head bank, and a servo fixture that indexes the helmet to each surface.
EPS deployed an XD-Series single-pass inkjet line purpose-built for hard hat decoration. The system uses high-precision servo-controlled motion to present a single helmet to a fixed six-head production-grade printhead bank, indexing the part automatically to each of four surface locations between print passes. There are no plates, no films, no ink mixing, and no operator changeover between print locations — the line uses predefined position values to move from one helmet surface to the next, and a full four-sided, full-color decoration completes in under 60 seconds.
The print station supports multiple pretreatment options — plasma, corona, or flame — selectable by substrate and by end-customer specification, so the line handles the ABS, HDPE, and polycarbonate shell chemistries that hard hat manufacturers move between without re-engineering the front end. Printheads run at a working 10 mm throw distance from the helmet surface, which preserves drop placement accuracy on the compound-curved geometry of a hard hat without forcing tight mechanical tolerances on the rotational fixture. Cure is inline LED-UV, pinning each color before the next surface is indexed under the heads.
Helmet Presentation
A single helmet is loaded into a precision rotational fixture at the head of the print station, with the front surface presented to the printhead bank. Servo motion holds the helmet on its rotational axis for the rest of the cycle.
Pretreatment — Plasma / Corona / Flame
The substrate is pre-activated through the configured pretreatment station — plasma, corona, or flame, selectable per substrate chemistry — to drive the ink-to-shell adhesion the end customer expects. ABS, HDPE, and polycarbonate shells all run on the same line.
Print — Surface One
The six-head printhead bank lays down white plus CMYK in a single pass over the front of the helmet, holding the 10 mm throw distance across the curved surface. Drop placement accuracy preserved on compound-curved geometry without forcing tight mechanical tolerances.
Index and Reprint
The servo-controlled fixture rotates the helmet to the next surface — back, then left, then right — using predefined position values. The bank prints each surface in turn with zero operator intervention between indexes. Four surfaces, one continuous cycle.
Inline UV-LED Cure
Each color is pinned by an inline UV-LED bank before the next surface rotates under the heads, locking the image before any handling. No wet hand-off between surface indexes.
Helmet Exit
The finished, four-sided, full-color helmet exits the station in under 60 seconds from initial presentation — every helmet on the line capable of carrying unique variable data (name, title, crew, ID) without slowing the cycle.
What the XD-70 hard hat line delivers in production.
Four full-color sides in under 60 seconds
Front, back, and both side decoration compressed from a multi-station, minutes-per-unit process into a single sub-60-second cycle.
Zero plates, films, ink mixing, or station-to-station changeover
Pad, screen, and decal steps replaced by software-driven graphics. Operator labor and consumables for SKU changes effectively zero.
Full variable data — per helmet
Every helmet on the line can carry a unique name, title, crew, or ID number with no cycle-time penalty. Per-worker personalization at line rate.
Six-head production-grade printhead bank
Single-pass production array — stationary heads, moving (rotating) helmet. No carriage travel time, no per-color cycle hit.
Multiple pretreatment options on the same line
Plasma, corona, or flame — selectable per substrate. ABS, HDPE, and polycarbonate shells run on the same line without re-engineering the front end.
10 mm working throw distance across compound curves
Drop placement accuracy preserved on the helmet's curved geometry without forcing tight mechanical tolerances on the rotational fixture.
Engineering personalized PPE decoration at production volume?
Single-pass inkjet earns its keep when a decoration process is doing more than one job at once — multiple colors, multiple surfaces, and now variable data — and when the customer is ready to commit to production volumes. Engineered around those strengths, the XD-70 hard hat line replaces a sequence of pad, screen, and decal steps with a single 60-second cycle that pays for itself in eliminated changeover alone.