Hinged clamshell, two flared trays Box Template Generator

Hinged clamshell, two flared trays. Two identical trays cut as one blank and hinged wall to wall, so the second folds over on the first as a lid. Every wall flares outward by a quarter of its depth, and the corner webs are creased to the long walls and cut free of the short ones so they tuck behind as the tray is squared up.

Checked against the plate. This blank has been compared side by side with the drawing in the FEFCO Code, 12th Edition, and matches. That is a statement about the drawing, not a guarantee — always cut and fold a sample before committing to a die.

What is Hinged clamshell, two flared trays?

Hinged clamshell, two flared trays is a carton insert or fitment. Two identical trays cut as one blank and hinged wall to wall, so the second folds over on the first as a lid. Every wall flares outward by a quarter of its depth, and the corner webs are creased to the long walls and cut free of the short ones so they tuck behind as the tray is squared up.

Uses

General packing where a simple, economical board box is wanted

Advantages

Cut from a single blank, so there is one tool and one part to stock
Locks closed without glue or tape, which saves a consumable and a step

Disadvantages

Hand-locking takes longer per box than a taped or glued closure

Typical industries

Food and drink

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	`F40.71`
Family	Folding carton (ECMA)
Also known as	F40.71.00.00, clamshell tray pair
Blank size at this size	408 × 204 mm
Panels	18
Creases	17

Measured against the p.75 plate with scripts/plate-diff.py: score 1.000, MATCH, cut 1.000 found / 1.000 extra, crease 1.000 / 1.000. Two identical trays 65.25 apart on a 130.50 by 65.25 sheet, each a base 42.56 by 42.55 with an 11.35 wall on all four sides flaring 2.84 — a quarter of the wall depth — at every end. The corner webs are creased to the long walls and cut free of the short ones, the same hand at all eight corners. Drawn with the webs touching the end walls, as the plate draws them, the engine read the eight shared edges as creases and the score fell to 0.874 (crease 0.987 found / 0.887 extra); parting them by a hair fixed it.

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 F40.71 in the generator

Other codes in this group

Browse every code, or read what the groups mean.

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.