Carton types explained: tuck end, crash lock and more
Folding cartons come in a handful of standard styles. The style decides which panels customers see, and where your mandatory information can safely go.
£49.99 for 5 checks · No subscription · Checks never expire
Tuck end cartons
Reverse tuck end: the top and bottom tuck flaps close from opposite sides. It is the most common and economical style. Straight tuck end: both tuck flaps close from the same side, which gives a cleaner front panel for windows or premium print.
Crash lock (auto bottom)
The base is pre-glued so it locks into place as the carton is opened out. It is quick to erect by hand and strong enough for heavier contents such as glass bottles. It is usually paired with a tuck top.
Snap lock (1-2-3 bottom)
The base flaps fold in sequence and interlock. It's cheaper than a crash lock, but slower to assemble.
Sleeves and shelf-ready packs
Sleeves slide over a tray or another pack. Shelf-ready and display cartons have tear-away fronts for retail. If the sleeve is removed before sale, it can't be the only place mandatory information appears.
What it means for your artwork
- Never put mandatory information on glue flaps or dust flaps.
- Batch and best before are often printed on an end flap at packing. A reserved space on the proof is fine.
- If the carton holds sachets, blisters or strips that aren't sold separately, it must give the total net quantity and the number of packs.
More in our guide to checking carton artwork.
Check your carton artwork
Upload your artwork and get a report in minutes, with the rule behind every finding and a suggested fix.
ProofMyLabel is an automated pre-check, not regulatory sign-off or legal advice. The food business operator remains responsible for the packaging.