Self-locking tray, returned walls Box Template Generator

Self-locking tray, returned walls. A four-walled tray with a full second ply on every wall and a tuck tab beyond it, so the top edges are finished all the way round and the tray erects and holds without glue. The 30-series answer to the standard self-locking tray.

Not yet plate-checked. This template folds, closes and exports cleanly, but its blank has not yet been matched against the standard's own drawing in detail. Treat it as a starting point and check it before you spend anything.

What is Self-locking tray, returned walls?

Self-locking tray, returned walls is a folding carton with a glued side seam, closing at each end with a tuck, a lock or a glued flap. A four-walled tray with a full second ply on every wall and a tuck tab beyond it, so the top edges are finished all the way round and the tray erects and holds without glue. The 30-series answer to the standard self-locking tray.

Uses

Retail and gift packaging, where the box is seen by the customer
High-volume packing lines, since a pre-glued blank erects in one movement

Advantages

Cut from a single blank, so there is one tool and one part to stock
Arrives glued and flat, and erects quickly by hand or by machine

Disadvantages

The glued joint sets the minimum order — short runs are rarely economical

Typical industries

General packing and light manufacturing

Recommended board grades

Folding boxboard or solid bleached board, typically 250–450 microns. Heavier board for larger cartons, lighter where the carton is filled by machine.

At a glance

Code	`B30.02.00.00`
Family	Folding carton (ECMA)
Also known as	self locking tray, returned walls
Blank size at this size	439 × 346 mm
Panels	17
Creases	16

Get the dieline

The generator draws this style to whatever dimensions you enter and exports it as a 1:1 PDF, an SVG, or a DXF with the cut, crease and perforation lines on separate layers. Nothing to sign up for.

Open B30.02.00.00 in the generator

Other codes in this group

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Every FEFCO code we build — all 244 of them, grouped.
FEFCO codes explained — what the four digits mean and what each group covers.
How to measure a box — inside, outside and crease-to-crease.
Flutes and calipers — why board thickness changes the blank.