Corrugated components and inserts / JETDIELINE

Slotted container with crash-lock bottom

The corrugated box is preglued at the factory and supplied flat. The crash-lock bottom closes during erection; the top can have meeting flaps, fully overlapping flaps, or an open edge.

Slotted container with crash-lock bottom — Dieline preview of the documented example. Set the dimensions and production material in JetDieline.

Interactive 3D fold view

03 / BOX

Simplified display model without material thickness, not to scale.

Template ID: corrugated.autobottom
Construction: Corrugated components and inserts
Current template version: V1
Dieline preview version: V1

How the shape is constructed

Bottom wings with diagonal creases and glue flaps form the crash-lock bottom. The factory folds the flaps back and glues them along with the side seam on the flattened tube. wingOverlap determines overlap, lockStyle the lock type. You erect the tube until the bottom locks.

How it is assembled

At the factory: fold the bottom wing flaps back along the diagonals, apply adhesive, flatten the body, and glue the glue flap and flaps. At the customer: erect the body until the bottom locks, fill, then close and tape the top flaps.

Material and grain direction

Grain direction parallel to height (check)

Test fit, folding and closure on a sample made from the intended material. Confirm material thickness, grain direction and production steps with your printer.

Dimensions of the illustrated example

300 × 200 × 200 mm

30 × 20 × 20 cm11.81 × 7.87 × 7.87 in / ″

Length: 300 mmWidth: 200 mmHeight: 200 mm

Inside dimension

These dimensions describe the preview, not a fixed packaging size. The app recalculates the dieline for your own dimensions.

What to consider for this construction

Glue flap

Width of the glue flap used to glue the blank into a tube. The material requires a minimum width.

Glue flap angle

Bevel at the ends of the glue flap; facilitates folding and erection.

Flap gap

Gap between neighboring flaps or walls; at least approximately the material thickness.

Lid

Top closure: flaps as on a regular slotted container, fully overlapping outer flaps, or open.

Bottom wing overlap

Overlap of the folding wings in the closed crash-lock bottom.

Frequently asked questions

What must be glued before erection?

At the factory, the bottom wing flaps are folded back along the diagonal creases and adhesive is applied. The tube is flattened; the side glue flap and bottom flaps are glued. Only this prepared state enables the intended erection sequence. The dieline alone does not produce a functional crash-lock bottom.

How does a crash-lock bottom differ from a snap-lock bottom?

The snap-lock bottom closes during erection in a sequence of side flaps, tongue, and locking tab. The crash-lock bottom is preglued and closes as the tube is erected. It therefore requires different bottom wings, diagonal creases, and glue fields. Use the appropriate ID instead of replacing the closure of a finished contour.

Why is the flat tube checked?

The preglued box is supplied flat. Bottom wings must fit in this state without pressing against each other. wingOverlap.fitsFlatTube checks this additional geometry. A bottom can appear to fit when erected yet interfere when flattened. Check both states on the glued sample.