Custom Seal End Boxes
A seal end carton is glued shut at both ends rather than tucked. That single difference is why food, pharma and household products use it almost universally. Opening one means tearing it, which tells the customer nobody got there first. We produce a lot of seal end work at ZEE Packaging and tamper evidence is usually the reason clients specify it.
Glued Rather Than Tucked
A seal end closes permanently at both ends.
- Both end flaps are glued during production or filling
- Opening requires tearing rather than lifting a flap
- That gives inherent tamper evidence
- Nothing pops open under pressure in transit
- It runs on automated filling and sealing lines
- The closed ends look cleaner than a tucked flap
Most brands choosing a seal end need a carton that shows whether it has been opened.
Built For Automated Filling
The format exists for volume production.
- Cartons feed from a magazine into the filler
- Ends are glued and sealed within the same run
- No manual folding happens at any point
- Consistent gluing gives consistent seal strength
- Line speeds are far higher than hand assembly allows
- Send us your line spec and we build to its requirements
- Standard seal end the everyday build we run
- Full overlap seal end doubled board at each end
- With a tear strip opening cleanly for the customer
- With a perforated end controlled opening
- Window version showing product through a die cut
- Food grade version for direct food contact
Sizes We Print Regular
Every seal end carton is built to your product, though these run often:
- 3" x 2" x 6" for a standard retail item
- 4" x 3" x 8" for a larger product
- 2" x 2" x 5" for a small format
- 6" x 4" x 9" for a bulkier item
- 5" x 3" x 7" for a mid size product
- 8" x 6" x 10" for a large carton
Send us the filled weight and your line specification, since both affect the build.
Board And Print
- SBS C1S at 18pt to 24pt for retail applications
- CCNB and duplex where a grey back is acceptable
- Kraft board for a natural position
- Corrugated for heavier shipping formats
- Matte, gloss and soft touch lamination
- Food grade certified stock where required
Glue coverage determines seal strength. We specify it against your product weight rather than applying one standard pattern to everything.
Materials Worth Choosing
- Recycled board grades, widely available here
- FSC certified stock, certificate available on request
- Soy based ink through the whole run
- Water based adhesive on the sealed ends
- No tape needed anywhere on the carton
- Right sizing so no board is wasted per unit
What Happens On Your Order
- 100 unit minimum, so a small brand can order properly
- Free 3D mockup and flat proof before anything prints
- Free dieline drawn by our own designer
- Physical sample on request to test the seal
- Urgent turnaround at 5 to 8 business days
- Free shipping worldwide with nothing hidden
Frequently Asked Questions
What is the price of a seal-end carton?
Rough estimate is $0.18 to $0.55 per unit plain, $0.30 to $0.80 with print and $0.48 to $1.25 with finishing at moderate quantity. Volume moves it. Shipping is included in our price. This is estimate only, so ask our team for a exact quote.
How is it different to a tuck end?
The ends are glued shut rather than tucked. That gives tamper evidence and stops flaps popping open.
Do we need automated equipment?
Not necessarily, though the format suits it. Hand sealing works but is slower than a tuck end.
How does the customer open it?
A tear strip or perforation is worth adding. Without one, opening a glued end can be awkward.
Is it tamper evident?
Inherently, since opening tears the end. That is why pharma and food rely on it.
Should we use a full overlap version?
For heavier products, yes. It doubles the board across each end for considerably more strength.
Is it suitable for food?
Yes, in food grade stock. It is one of the most common formats in food packaging.
