Syringe cartons fail on length more often than on anything else, because the product changes shape. A syringe is one length filled and capped, another with the plunger drawn out, and another again once a safety shield is deployed. Decide which state you are packing, then measure that state.
The measurements that matter
- Overall length in packed state. Include the tip cap or needle shield and the full plunger travel if the unit is packed extended.
- Flange width. The finger flange, not the barrel, is normally the widest point across.
- Barrel diameter with the luer collar. A luer lock collar sits proud of the barrel and catches on a tight tray.
- Plunger head width. On a small volume unit this can be the widest feature of all.
- Accessories. Alcohol wipes, a spare needle, an instruction leaflet and a blister all need their own room.
Record the result as internal length x width x depth, state that the numbers are internal, and note on the quote which packed state they describe. If a blister or a sterile pouch is involved, measure the blister rather than the syringe, because the blister is now the product being boxed.
Holding the unit still
A syringe left loose in a carton rolls, which scuffs graduations and can stress the luer joint. Most cartons use one of three approaches. A die cut paperboard tray with a cradle cut to the barrel is light, recyclable and prints well. A folded corrugated insert gives more crush resistance for a heavier unit or a multi-pack. A moulded tray suits a set with several components that each need their own recess. Whichever you choose, give us the insert thickness so the internal depth is built to the loaded assembly rather than to the bare syringe.
Board, print and the leaflet
These cartons usually run as tuck end or seal end boxes in a paperboard heavy enough to hold a crisp panel for small type. The leaflet is often the reason a carton grows: a folded instruction sheet at full size can be the thickest single item in the box. Fold it, measure it, and include it in the depth before the die is cut. Small type, lot number fields and variable data areas should be marked on the dieline so nothing critical falls into a fold or a glue flap.
One thing we will not do is tell you that a carton meets a medical standard. Child-resistant features are available on request. We do not certify compliance, so confirm requirements for your jurisdiction and product, including any labelling or serialisation rules that apply to you. What we can do is build the carton exactly to the spec your regulatory team gives us and show it to you as a digital proof before anything prints.
Ordering
The minimum is 100 boxes. Pricing runs from about $0.48 per unit at bulk volumes, confirmed on a written quote, with the die, plates, design support, US shipping and a digital proof included. Turnaround is quoted per job in three lanes, rush (expedited production plus air freight), standard (air) and cost saver (sea), from about 7 business days, plus 2 to 5 for delivery.
Send the packed state measurements and the leaflet size to the quote form and we will come back with a carton and tray proposal. Related: custom medicine boxes and insert packaging.
