ECMA · 2D DIELINE
Confectionery & Chocolate Box
ECMA B20.01.00.50.B
Two-Double-Wall Claw-Lock Tray with Rounded-Cap Tuck-Lid. An unglued carton tray with two returning double walls and claw locks, closed by an attached tuck lid. The tuck side of the lid ends in two rounded caps. A single blank forms the tray and lid.
Use this templateInteractive 3D folding is available in the studio.


Artwork shown for illustration. Add your own in the studio.
CONSTRUCTION NOTES
About this construction.
Reading the code B20.01.00.50
B20.01.00.50 sits in ECMA group B: non-long-seam-glued folding cartons with rectangular surfaces — tray-style constructions that lock together without a glued long seam, with all outer panels meeting at right angles. The code's blocks describe, in order, the basic tray shape (20), the flap locking system (01), the dust flaps (00) and the cover system (50).
This design is an unglued self-locking tray with two double walls, locked with claw locks on the double walls, closed by a tuck-in flap cover.
Group B designs can serve as a single tray or, paired with a matching lid, as a telescopic packaging system.
This template is catalogue variant B of the coded construction, with adjusted proportions.
How the closures behave
The two long walls fold up and return on themselves; the end walls hold them with claw locks that hook into the double wall as it closes. The lid continues from the back wall and closes with a tuck flap into the front; on this variant the tuck side of the lid ends in two rounded caps rather than a straight edge.
Typical uses
Unglued tray constructions are erected at the point of use without adhesive: food and bakery trays, counter and display trays, and — with a lid — telescoping gift and presentation boxes. Because they lock by geometry, they store and ship flat and assemble by hand in seconds.
Dimensions and board
The parameters above — length, width, depth and paper thickness — drive the whole blank. Board caliper is not a footnote: tuck clearances, lock engagement and panel fit all scale with it, which is why it is a first-class input to the parametric model rather than an allowance you add by hand.
Every value is validated against the template's supported range, and the 2D dieline and 3D fold preview regenerate together from the same structure. Confirm final board grade, grain direction and tolerances with your converter before production.
Industries and applications
Converters cut the Confectionery & Chocolate Box (ECMA B20.01.00.50.B) for chocolate, praline and confectionery boxes and gift boxes and presentation packs.
Confectioners want a tray that holds the pieces still and a lid that closes again after the first praline.
COMMON QUESTIONS
Quick answers about this template.
What is Confectionery & Chocolate Box — Claw-Lock Tray with Double Walls and Tuck Lid (Variant B)?
ECMA B20.01.00.50.B is an unglued carton tray with two double walls and claw locks, closed by a tuck lid whose tuck side ends in two rounded caps. One blank forms tray and lid.
Which dimensions does the Confectionery & Chocolate Box — Claw-Lock Tray with Double Walls and Tuck Lid (Variant B) dieline need?
4 parameters drive the blank: L (length), W (width), D (depth), Paper thickness (mm, um). Each value is validated against the template's supported range, and the whole dieline regenerates from them.
Can I see how Confectionery & Chocolate Box — Claw-Lock Tray with Double Walls and Tuck Lid (Variant B) folds before cutting it?
Yes. The interactive 3D fold preview and the 2D dieline are generated from the same parametric model, so the fold you watch on screen is the geometry of the sheet you cut. Open the template in the studio to fold it at your own dimensions; 3D folding comes with the Workshop and Line plans.