The EPS ClosurePrint System — Production-Speed Pharmaceutical Closure Decoration
CRC pharmaceutical closures break direct offset's economic model.
Application profile: a leading global pharmaceutical closure manufacturer supplying child-resistant closures (CRCs) into pharmacy chain, hospital, and pharmaceutical-filler channels. Annual output measured in the hundreds of millions of closures across multiple SKUs and brand graphics, with FDA-regulated production discipline and the multi-SKU complexity that drives a packaging converter’s economics — many short and medium runs in a single shift rather than one long run.
CRC pharmaceutical closures are a difficult substrate combination: small footprint with a tight printable area, smooth polypropylene or polyethylene that resists ink adhesion without pretreatment, child-resistance features that constrain orientation, and a regulatory environment that demands consistent print quality on every unit. The product mix compounds the difficulty — a closure manufacturer serving multiple pharmacy chains and pharma fillers may run dozens of brand graphics in a single week, each with its own colors, copy, and language variants.
The conventional alternative is direct offset (dry offset) — the dominant decorating process for high-volume closure work. Direct offset wins on raw speed and per-piece cost on a single long run, but it leaks economics back on SKU changeover (plate or blanket swaps, color resets, ink line purges), short-run flexibility (changeover cost amortized across fewer units), and the inability to print variable data without a separate process. As pharma packaging shifts toward more SKUs and shorter runs, the direct-offset economic model bends.
The EPS ClosurePrint System — six line functions in one footprint.
EPS deployed the EPS ClosurePrint System — a high-speed pharmaceutical closure decoration cell built on the XD-108 single-pass inkjet print engine. The ClosurePrint System integrates all six line functions — bulk feed, singulation, flame pretreatment, print + cure, 100% inspection, and post-inspection blow-off — into one continuous footprint. Production-grade printheads in a fixed array, white plus CMYKOGV ink chemistry from a qualified manufacturer of record, open-flame pretreatment sized to keep pace with print throughput, integrated LED-UV cure pinning ink at line speed, inline vision inspection on every closure, and a post-inspection blow-off that delivers debris- and static-free closures to the downstream filling line.
ClosurePrint is single-pass displacing direct offset in segments where direct offset’s setup cost and SKU-change friction outweigh its raw run-rate. The economic argument lives in changeover and short-to-medium runs: a software SKU swap rather than a plate change; no per-color setup; full-color brand graphics including variable data printed in one index; no cliché or blanket to manage.
Bulk Feed — The Hopper
Closures arrive from upstream molding or bulk packaging and pool in the ClosurePrint feeder hopper. No manual handling between bulk pallet and decoration. The hopper is sized to keep the line fed across a sustained production run without operator refill becoming the throughput governor.
Waterfall Singulation and Orientation
Closures are metered out of the hopper and cascade down an inclined waterfall belt with parallel orientation slots. Each closure is singulated, oriented top-up, and indexed onto the print conveyor at line cadence. The waterfall sets the pace for the rest of the cell — sized to keep the print bridge continuously fed.
Open-Flame Pretreatment
Each closure passes through an in-line gas flame station that briefly raises the substrate's surface energy so the ink wets and adheres without delamination. The flame is the visible blue gas burn directly above the cap path. Flame is the standard pretreatment for polyolefin closures at this throughput class.
Single-Pass Inkjet Print + LED-UV Cure
Each closure passes under a fixed-position production printhead array — the XD-108 print engine at the heart of the ClosurePrint System — that lays down white plus CMYK in one continuous index. Integrated LED-UV cure pins each printed area immediately after the head bridge, so closures leave the print zone print-dry. Continuous-flow part transfer; no station-to-station registration drift.
Production Printhead Array
The array is a fixed bank of production-grade printheads fed from the centralized ink supply. Fixed-position heads, moving conveyor — the defining geometry of single-pass production inkjet. No carriage motion, no per-color station, no cliché or blanket swap on a SKU change.
In-Line Inspection
A vision station inspects every decorated closure for registration, color density, and graphic integrity before it leaves the cell. Failed parts are diverted; passes flow forward. Sample-based QA is not an option in an FDA-regulated downstream filling environment — every cap is verified.
Post-Inspection Blow-Off
A final blow-off station ensures that rejected caps do NOT get shipped to the customer. Decorated closures exit ready for the filling line — bulk-in to inspected caps with no operator handling in between.
What the ClosurePrint cell delivers in production.
SKU change as a software event
No plate, blanket, or cliché swap between SKUs. Graphic change is a job-load operation rather than a mechanical reset. The economic argument against direct offset lives here.
Full color in one index
White + CMYK printed in a single continuous index — including variable data and language variants. No second-color station, no per-color registration recovery.
Six functions, one footprint
Feed → singulate → pretreat → print/cure → inspect → blow-off integrated into one continuous ClosurePrint cell. The decoration line stops being multiple cells the operator has to balance.
Pretreatment that keeps pace
In-line open-flame sized to match full print throughput — pretreatment is not the bottleneck. Polyolefin surface activation in motion, never as a batch step.
100% inline inspection
Every decorated closure verified before it leaves the cell — supporting the FDA-regulated downstream filling environment. Failed parts diverted before they reach the filler.
Bulk-in, pharma-ready out
Closures arrive in bulk and leave decorated, inspected, and conditioned (debris + static removed) ready for the filling line. No operator handling between infeed and outfeed.
Engineering a pharmaceutical closure decoration line?
Pharma closures are one of the cleanest cases for single-pass inkjet in packaging — not because single-pass is faster than direct offset on a single long run, but because closure programs increasingly are not single long runs. The pharmacy and pharma channels keep adding SKUs, languages, and brand variants. Every additional SKU is a changeover, and every changeover is where single-pass takes the economics back from direct offset. ClosurePrint is engineered exactly for that shift.