Sequenced base flaps
Operators fold the numbered or understood flap sequence so the final panel locks the base together.
Custom printed Snap-lock bottom / UK
Snap-lock bottom cartons
Snap-lock bottom cartons, sometimes called 1-2-3 bottom cartons, use interlocking base flaps to provide more support than a standard tuck closure. The format is useful for candles, bottles and heavier retail items packed by hand.
Minimum order500 unitsTypical production7–10 working daysSupplySide seam glued, base assembled during packingSpecificationMade to size, print and finish
Closure systemInterlocking 1-2-3 base with top tuck
Product supportMedium product weights, subject to testing
Packing methodSequential hand assembly
Supply formatSide seam glued, base assembled during packing
Minimum order500 units
Production lead time7–10 working days
01 / Structural logic
How the snap-lock bottom carton works.
An interlocking-base carton assembled in sequence for dependable support without a pre-glued base.
Snap-lock bottom cartons use a set of base flaps that interlock in sequence, often described as a 1-2-3 bottom. Unlike a crash-lock carton, the base is not automatically formed by pre-glued panels. The format arrives flat, gives more support than a basic tuck base and suits hand-packed products where a deliberate assembly step is acceptable.
Mechanical interlock
The base gains support from overlapping board geometry rather than an automatic pre-glued base assembly.
Tuck-top access
The top remains easy to fill, close and reopen while the locked base carries the product.
02 / Decision guide
Choose with the whole packing system in view.
The box style, board, product and packing process need to work together. These are the advantages to use—and the points to verify before production.
- 01
Interlocking flaps create a supportive base without automatic-base gluing.
- 02
The structure arrives flat, helping with storage before packing.
- 03
It offers a useful balance of protection, presentation and production economy.
- 01
Account for the extra packing time and give operators a clear, repeatable base-folding sequence.
- 02
Physically test the packed carton because weight capacity changes with dimensions, board and flap geometry.
- 03
Check the underside for a level, secure lock where the carton must stand upright on shelf.
- 04
Review whether a crash-lock base is more suitable when packing speed becomes the dominant requirement.
03 / Applications
Products this structure can suit
Candles, glass bottles, jars and heavier retail. Final suitability is confirmed against the packed product and distribution route.
01Candle packaging02Glass bottle cartons03Retail jar boxes04Home-fragrance cartons
04 / Material specification
Choose the board before the surface.
Stiffness, print response, fold performance and product weight shape the material decision. These are the most relevant starting routes for this structure—not fixed specifications.
Folding box board
A practical route for moderate product weights where stiffness and a high-quality print face are needed.
Solid bleached board
Supports premium graphics and clean internal presentation for candles, bottles and personal-care products.
Recycled or reinforced grades
Can be evaluated when natural appearance, recycled content or additional strength is part of the brief.
Recommended starting routes
Product-specific combinations to evaluate before opening the complete interactive library.
Protective lamination
Helps control scuffing on dark colours and high-contact retail packs.
Foil or selective gloss
Adds controlled premium accents without interfering with the locking base.
Embossed branding
Creates tactile hierarchy on principal panels where reverse-side relief is acceptable.
Cut-out windows
Can reveal a candle, bottle or jar while maintaining safe board margins and tested rigidity.
05 / Interactive options libraryBuild the surface.
Build the surface.
Engineer the details.
Click through premium finishing and structural add-ons for snap-lock bottom cartons. Each option shows the visual character, best use and production point to resolve before artwork approval.
Gold and silver foil are shown separately. Foiling is also available in a wide choice of metallic and pigment colours, subject to the selected foil range and stock.
Hot foil stamping
Gold foil
Warm metallic reflection
Foil coloursand other colours
A heated die transfers gold-coloured foil onto selected artwork, creating a crisp reflective focal point without printing an additional ink colour.
- Best used for
- Logos, borders, monograms, range markers and small premium details.
- Production check
- Keep foil clear of tight creases and very fine reverses. The exact gold shade and sheen are approved from the available foil swatches.
06 / Physical approvalSee the specification
See the specification
before the production run.
A screen can suggest colour and surface, but fit, fold and finish should be judged against the actual structure. For a snap-lock bottom carton, the approval route can include a plain prototype, printed sample or finish reference.
Approval checkpoints01 02 03 Include this in my brief ↗
Fit and closure
Confirm the internal dimensions, product movement and the way each panel opens and closes.
Board and print
Review stiffness, fold response, colour and small copy on the chosen paperboard route.
Finish and add-ons
Check foil, relief, varnish, windows or inserts against the live dieline and tolerance.
Images are illustrative specification visuals, not client work. The finished result is developed and approved against your product, dieline, board and artwork.
07 / Artwork file check
Artwork that is ready for the dieline.
- 01Use the approved dieline at 100% scale; do not redraw or resize the cutting template.
- 02Supply vector logos and type, with fonts outlined or correctly packaged and linked images at production resolution.
- 03Define CMYK builds and any Pantone references clearly, then agree the proofing method for critical brand colours.
- 04Extend artwork through bleed areas and keep small text, barcodes and essential details inside safe zones.
- 05Place foil, spot UV, embossing, debossing, white ink and cut-outs on separate named artwork layers.
- 06Check regulated copy, barcodes, batch areas and product claims before final artwork approval.
08 / From brief to delivery01 02 03 04 05 06
The production route.
Product brief
Confirm dimensions, weight, quantity, orientation, packing method and delivery destination.
Structure
Select or develop the dieline, board route, closure and any required internal support.
Prototype
Review fit and opening behaviour with a structural or printed sample where the brief requires it.
Artwork approval
Check copy, colour, barcode position and each finishing layer on the approved dieline.
Production
Allow a typical 7–10 working days after the final specification and artwork are approved.
Delivery
Plan transit separately against packed volume, destination and the required arrival date.
09 / Product FAQs
Snap-lock bottom questions
Structure, quantity, timing, print and packing answers for this carton format.
What are snap lock bottom cartons?
Snap-lock bottom cartons, sometimes called 1-2-3 bottom cartons, use interlocking base flaps to provide more support than a standard tuck closure. The format is useful for candles, bottles and heavier retail items packed by hand.
What products suit snap-lock bottom boxes?
Candles, glass bottles, jars and heavier retail. Final suitability depends on the item dimensions, weight, fragility and the way it will be packed and transported.
Can snap-lock bottom cartons be custom printed?
Yes. The approved dieline can carry brand colour, product information, barcodes and imagery, with foil, emboss, deboss, spot UV, lamination or windows added where the material and artwork allow.
Can snap-lock bottom cartons include a window patch?
Yes, where the panel size and carton structure allow. A die-cut aperture can be left open or backed with a clear window patch. Patch material, overlap, glue area, product protection and recycling objectives are confirmed for the specific application.
Which foil colours are available for snap-lock bottom cartons?
Gold and silver are the most familiar choices, but hot foil is available in many metallic and pigment colours, including copper, rose gold, red, blue and green, plus selected holographic effects. The final colour and sheen are chosen from physical swatches and remain subject to supplier range and stock.
What is the minimum order for snap-lock bottom cartons?
The minimum order quantity starts at 500 units. Finished size, board, print coverage and finishing requirements are confirmed before the production route is priced.
How long do snap-lock bottom cartons take to produce?
Typical production lead time is 7–10 working days after the structure, artwork, paperboard and finishes are approved. Structural development, sampling and delivery are additional where required.
Why is this called a 1-2-3 bottom box?
The base flaps are folded in a defined sequence before the final flap locks the assembly. The exact order follows the approved carton construction.
What is the difference between snap-lock and crash-lock bottoms?
A snap-lock base is manually interlocked during packing. A crash-lock base is pre-glued and forms as the carton is opened, usually making erection faster.
Do snap-lock cartons store flat?
Yes. The glued carton body is normally delivered flat, and the interlocking base is assembled when the product is packed.
MOQ / 500 unitsProduction / 7–10 working daysNo dieline needed to start
Turn the snap-lock bottom structure into your specification.
Share the product dimensions and quantity now. Board, structure, finishes and add-ons can be refined during the specification review.
10 / Compare
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