Folding cartons · Packaging buyer’s guide
An auto-bottom carton uses a pre-glued bottom construction designed to form as the flat carton is opened. Buyers also encounter the term crash-lock bottom. Its value should be evaluated in the actual packing operation.
The short answer
Auto-bottom, often called crash-lock, uses pre-glued bottom flaps that form as the carton opens. It can simplify hand assembly, but its value depends on the job’s packing sequence. Confirm the assembled base and product support with a physical sample.
What to review before approving production
Compare an erected sample with the product inside. Review how the base seats, how the top closes, and how the packed unit moves into its outer shipper. The structure alone does not establish a load rating or remove the need for an insert or transport protection.
Build a practical project brief
- Product size and packed weight
- Hand-packing or automated workflow
- Assembly sample and base inspection
- Outer shipper and insert requirements
Discuss your next run with Pacer
Send your existing packaging, current artwork or a product sample, and the quantities needed for each design. Include the delivery ZIP code and required date so the discussion reflects the job you actually need. Confirm the proposed materials, available features, minimums, production timing, and any testing with Pacer before ordering.
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