Pre-glued automatic base
Interconnected base panels are glued during manufacture and form the working bottom as the carton body is squared.
Custom printed Crash-lock bottom / UK
Crash-lock bottom cartons
Crash-lock bottom cartons—also called auto-lock bottom boxes—open into shape with the base already positioned. They suit products that need more support than a simple tuck base and packing operations where speed matters.
Minimum order500 unitsTypical production7–10 working daysSupplyAutomatic base pre-glued, supplied flatSpecificationMade to size, print and finish
Closure systemPre-glued automatic base with top tuck
Product supportMedium product weights, subject to board and size
Packing methodFast hand erection and packing
Supply formatAutomatic base pre-glued, supplied flat
Minimum order500 units
Production lead time7–10 working days
01 / Structural logic
How the crash-lock bottom carton works.
A fast-erecting carton with a pre-glued automatic base for efficient packing and added support.
A crash-lock bottom carton uses a set of pre-glued base panels that move into position as the flat carton is opened. The automatic base removes a separate manual locking sequence, making it useful where operators need to erect cartons quickly. The finished strength still depends on footprint, board grade, product weight and successful physical testing.
Top access
A tuck-top closure keeps filling and opening familiar while the base provides additional support.
Load-bearing footprint
Base geometry spreads product weight across a larger connected area than a simple tuck flap.
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
The automatic base reduces assembly steps during packing.
- 02
A larger base area supports bottles, jars and other compact products.
- 03
Premium print and finishing can be applied without losing practical pack performance.
- 01
Test the exact product, board and carton footprint; the term crash-lock does not guarantee a universal weight capacity.
- 02
Keep print coatings and finishes out of all manufacturer’s glue zones to protect bond performance.
- 03
Confirm erection behaviour after storage because board moisture, grain and heavy surface coverage can affect flatness.
- 04
Allow enough internal clearance for the base to open fully without the product catching the folded panels.
03 / Applications
Products this structure can suit
Bottles, jars, candles, supplements and gift products. Final suitability is confirmed against the packed product and distribution route.
01Bottle cartons02Candle boxes03Jar packaging04Gift product 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.
Higher-stiffness paperboard
Often preferred when bottles, jars or compact products need improved base support and clean panel presentation.
Solid bleached board
Suitable for premium print where strength, smoothness and a consistent interior appearance are required.
Recycled board or microflute
Can be considered for heavier or sustainability-led briefs, subject to structure, print surface and pack testing.
Recommended starting routes
Product-specific combinations to evaluate before opening the complete interactive library.
Matte or gloss lamination
Adds a controlled surface and handling protection while glue zones remain finish-free.
Foil and spot UV
Creates premium focal detail on the front, side or top panels.
Emboss or deboss
Works on selected areas away from heavy crease intersections and base mechanics.
Window and insert systems
Can display or locate the product when enough structural board remains around each cut-out.
05 / Interactive options libraryBuild the surface.
Build the surface.
Engineer the details.
Click through premium finishing and structural add-ons for crash-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 crash-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
Crash-lock bottom questions
Structure, quantity, timing, print and packing answers for this carton format.
What are crash lock bottom cartons?
Crash-lock bottom cartons—also called auto-lock bottom boxes—open into shape with the base already positioned. They suit products that need more support than a simple tuck base and packing operations where speed matters.
What products suit crash-lock bottom boxes?
Bottles, jars, candles, supplements and gift products. Final suitability depends on the item dimensions, weight, fragility and the way it will be packed and transported.
Can crash-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 crash-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 crash-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 crash-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 crash-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.
Is a crash-lock bottom the same as an auto-lock bottom?
Yes. Both names commonly describe a folding carton with a pre-glued base that moves into place as the carton is erected.
Are crash-lock cartons supplied assembled?
They are normally supplied flat with the side seam and automatic base already glued. Opening the carton squares the body and engages the base.
Can a crash-lock carton hold a glass bottle?
Potentially, but the exact bottle weight, centre of gravity, carton footprint, paperboard and distribution conditions must be tested. An insert or alternative structure may also be required.
MOQ / 500 unitsProduction / 7–10 working daysNo dieline needed to start
Turn the crash-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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