Bottom Tongue Lock Box
A folding carton with interlocking tongue-and-slot base flaps that create a strong, glue-free auto bottom. Built for bottles, jars and heavier retail products that need a secure lock without assembly equipment.
At-a-glance specs
- Structure
- Interlocking tongue-and-slot auto bottom
- Board grade
- 14 / 18 / 24 pt SBS · kraft
- Thickness
- 0.36 – 0.62 mm (14–24 pt)
- CMYK + Pantone, inside & outside
- Finishes
- Matte / gloss / soft-touch / foil / spot UV
- MOQ
- 500 units (sample: 1)
- Lead time
- 8 – 12 business days + shipping
The strongest glue-free folding base
No glue, no tape
Tongue flaps slot into the base and lock under the product’s own weight.
Holds weight
Ideal for wine bottles, glass jars, toys and heavier cosmetics.
Fast assembly
Pops into shape by hand at the packing station.
Prints flat
CMYK + Pantone on standard folding-carton board.
What is a bottom tongue lock box?
- Interlocking base — tongue flaps slot and lock without adhesive.
- Heavy-product friendly — holds more weight than a standard tuck end.
- Hand-assembled — no case sealer or hot-melt required.
- Custom print — CMYK, Pantone and spot finishes on SBS or kraft.
Specifications
| Structure | Interlocking tongue-and-slot auto bottom |
|---|---|
| Board grade | 14 / 18 / 24 pt SBS · kraft · CCNB |
| Material | SBS · Kraft · CCNB recycled paperboard |
| Printing | Offset CMYK + Pantone · HD digital · full-bleed |
| Finishes | Gloss / matte / soft-touch lamination · foil · emboss · spot UV · window |
| MOQ | 500 units — price breaks at 1k / 5k / 10k+ |
| Turnaround | 8–12 business days after approval · rush available |
| Free with quote | Custom dieline + physical sample or 3D mockup |
Folding carton thickness
Board caliper (thickness) decides how stiff and premium your carton feels — measured in points (pt).
Frequently asked questions
Bottom tongue lock vs auto-lock bottom? +
What weight can it hold? +
What board? +
What is the MOQ? +
How fast can I get them? +
Our Ordering Process
Four simple steps from first inquiry to boxes at your door.
Send inquiry
Tell us size, qty, material & artwork. Get a firm quote + free dieline in 24h.
Proof & sample
We send a digital proof or physical sample for your sign-off before production.
Production
Printed and finished in 8–12 business days with rigorous quality checks.
Delivery
Flat-packed and shipped worldwide, with tracking and after-sales support.
What brands say about our bottom tongue lock boxes
Beverage, toy and cosmetic brands use bottom tongue lock boxes when they need a glue-free base that still carries weight.
“Our folding cartons print beautifully — the SBS surface makes CMYK pop and the foil came out crisp. Dieline was free and the proof was right first time.”
“We moved our whole subscription line to these cartons. Crash-lock assembly saves my packers real time and the kraft option looks great.”
“The window patch cartons let customers see the product without opening. Retail buyers loved it and re-ordered for three seasons.”
Strong glue-free base
The interlocking tongue flaps create a base that stays square under weight—no glue, no tape, no case sealer needed.
See options →
Hand-pop assembly
Packing staff can fold and lock the base in seconds, making it ideal for fulfillment lines that mix SKUs.
Start customizing →Shelf-ready color
CMYK and Pantone print cleanly on the flat carton faces, so your graphics stay crisp on every panel.
See options →
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Corrugated Mailers
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