Define the Destination Before You Specify a Medicine Packing Machine

The decision chain, worked from cavity to pallet

Primary, secondary and tertiary packaging are not three purchases, they are one chain, and the ratio between the levels decides the machine sizes. Here is a worked example I use in early meetings: a ten-cavity blister, two blisters per carton, ten cartons per bundle, six bundles per case, 36 cases per pallet.

One pallet is 43,200 tablets. Once you have that chain written down, the cartoner speed is not a preference, it is arithmetic. And once you know which levels carry a code, you know whether you are buying a cartoning machine or a data-capture system that happens to erect cartons.

Cartoning machine families and where each one stops

For a medicine packing machine the honest selection rule is format count, not speed. Intermittent motion wins above roughly six formats a year because changeover is mechanical and forgiving, and the operator can see what they are setting. Continuous motion wins on two or three large SKUs where you can justify the accumulation and the steadier infeed it demands. Closing method matters too: tuck-in flaps are fast and clean but leave a closure a tamper-evident label has to cover, while hot-melt gluing gives a stronger seal at the price of a glue system, open-time control and more cleaning.

Leaflets, patient information and the three failure modes

Folded leaflets run at four to twelve pages, with cross fold, parallel (zig-zag) fold and roll fold the common patterns. A typical folded leaflet sits around 90–110 mm by 100–140 mm. The insertion magazine is where the trouble starts.

• Double leaflet. Two picked together. Cured by singulation at the magazine and a thickness or count check before insertion.
• Missing leaflet. The one that reaches a patient. Needs a presence check at insertion, not only a weight or vision check at the carton exit.
• Wrong leaflet version. The expensive one, because it is a recall rather than a reject. Cured only by printing a version code or a barcode on the leaflet, reading it before insertion, and matching it to the carton code in the line software.

For the EU market, outer packs are expected to carry the product name in Braille. Ask your converter first: most sites buy pre-embossed cartons, because inline embossing needs board with enough bulk and an emboss depth around 0.2–0.4 mm that the carton collapses to absorb. Confirm the exact obligation and the accepted Braille format with your regulatory affairs team before you price either route.

The code itself: GS1 content, grading and aggregation levels

A pharmaceutical GS1 data matrix normally carries four application identifiers: GTIN (AI 01), serial number (AI 21), batch or lot (AI 10) and expiry date (AI 17). Some markets add a national code. A typical symbol prints at 0.4–0.6 mm module size, giving an 8–12 mm code including the quiet zone.

Require grading, not reading. A camera that decodes a code today tells you nothing about whether a pharmacist's scanner will decode it after a year in a warehouse. Most pharmaceutical URS documents I see call for a minimum grade on the ISO/IEC 15415 scale, commonly 1.5 (C) or better. Write the number and the standard into the URS and demand the grading report at FAT.

The physical layout is a printer, then a camera, then a reject gate with confirmation that the reject actually left the line. Cases get a print-and-apply label; aggregation builds the parent-child record from item to bundle, bundle to case and case to pallet. Regional content differs, and this is the part I refuse to specify for a customer: EU FMD, the phased US DSCSA requirements, Saudi and Gulf national systems, and the Chinese, Indian and Brazilian schemes all differ in data content, reporting and timing. Your regulatory affairs team owns that specification. Confirm current requirements with them, and treat any deadline printed in a machinery brochure as marketing.

Tamper evidence, child resistance and anti-counterfeit layers

Tamper evidence is the cheap layer: a tamper-evident label or tape across the carton closure, a shrink band, or glued flaps that must tear to open. Child resistance is a tested claim, not a feature. Reclosable child-resistant packs are assessed against ISO 8317 and non-reclosable pharmaceutical packs against EN 14375, with the US following the CPSC protocol under 16 CFR Part 1700. Do not accept "child-resistant design" in a quotation; ask for the test report and the closure specification, and confirm the applicable standard with your regulatory affairs team.

Anti-counterfeit work then stacks in three layers: overt features a person can see (hologram, colour-shift ink), covert features a inspector can verify (taggants, invisible inks), and the digital layer, which is your serialised code plus a verification system in the destination market. The digital layer only works if the data is uploaded and someone can query it.

Case: adding serialisation to an existing Southeast Asian line

A contract packer in Southeast Asia running a 90 cartons/min intermittent horizontal cartoner needed item-level coding for Gulf export and for a domestic national scheme. Before the work, cartons carried batch and expiry from a hot-foil coder, case packing was manual with four operators per shift, and there was no aggregation. Ambient in the hall was 30–33 °C at 75–85 % RH.

We added a printer and a verification camera on the cartoner outfeed, a reject gate with confirmation, a scan-as-you-pack aggregation station at case level with print-and-apply case labels, and line management software licensed for one line plus an interface to their ERP. The first attempt used thermal inkjet and graded 1.2 at ambient humidity; dot gain on the coated board was the cause. Switching to a 30 W CO2 laser took the grade to 2.0–2.5.

Result: sustained output 84 cartons/min against 90 before, a 7 % loss that came from reject stops and printer maintenance windows; false reject rate 0.8 %; case-level aggregation complete at 6 cases/min with four operators reduced to one. The interesting number is the 7 %. That is what the compliance layer costs in throughput, and it is why the market question comes first.

The URS questions and the procurement traps

Put these in the URS for any medicine packing machine: the full format list with carton and leaflet dimensions and annual volume per SKU; the destination markets and the exact code content, grade and aggregation levels; the OEE target and how it will be measured; the changeover time target and who performs it; cleaning requirements, especially for potent products; the language and format of documentation; and in-region service response time with the location of the spare-parts stock.

Then read the quotation looking for five traps. A machine that codes but does not verify: no camera, or a camera with no reject confirmation. "Serialisation ready", which means nothing until you ask whether it includes site-level software and the interface to the market system. No aggregation, which leaves you hand-scanning cases. No line-management software licence, or a licence limited to one line when you intend three. And vision, change parts for the second format, and FAT with your own cartons and leaflets, all quoted as options.

Six Questions Buyers Send Us Before They Issue a Cartoner URS

Intermittent or continuous at 150 cartons/min?
Intermittent is realistic up to about 120 cartons/min with leaflets and blisters; continuous starts to make sense above that. Choose on format count: above six formats a year, intermittent will give you more productive hours even at a lower nameplate.

Can we retrofit serialisation onto a ten-year-old cartoner?
Item-level coding usually yes, if the outfeed has room for printer, camera and reject and the carton transport holds position accurately enough for grading. Aggregation is the harder half, because it needs a scan station at case level and the software behind it.

Does the camera need to grade or just read?
Grade. Ask for the ISO/IEC 15415 grading report per code as part of FAT, and specify the minimum grade in the URS. Reading alone is how unreadable codes reach a pharmacy.

How do we prove the right leaflet went into the right carton?
Print a version code or barcode on the leaflet, read it before insertion, tie it to the carton code in the line software, and reconcile counts at the end of the batch. Version control on leaflets is a recall risk, not a nuisance.

What does Braille cost us?
Little in speed if your converter supplies pre-embossed cartons, more if you emboss inline, where board bulk and emboss depth around 0.2–0.4 mm become the constraint. Ask the converter first. Confirm the exact requirement with your regulatory affairs team.

What belongs in the URS about software?
Which system owns the serial numbers, who may create and decommission them, what the line does when the network drops, and whether the licence covers one line or the site. Write those down before you compare prices.

Written by Helen Xu | Chief Industrial Application Engineer

Helen Xu is a Chief Industrial Application Engineer with 9 years of specialized experience in packaging machinery and liquid filling machine design, equipment model selection, and full production line process optimization. He focuses on delivering customized packaging & filling solutions for pharmaceutical, food, and chemical manufacturing industries, with mature practical expertise in GMP compliance, ISO 9001 quality management standards, and turnkey large-scale filling & packaging production line integration.