Open-Top Tuck Bottom Carton

Reading the code A20.01.01.00

A20.01.01.00 sits in ECMA group A: long-seam-glued folding cartons with rectangular surfaces. The carton is glued into a sleeve along its long seam, and the code's panels are numbered 1 to 4 starting from that glue seam. The two leading blocks describe the closure systems — the bottom first (20), then the top (01); the following blocks record which panel each closure's flap is connected to.

Here the bottom end uses the tuck-in flap closure system (20), and the top end has no closing flaps (01).

Counting from the glue seam, the bottom flap hangs on panel 1.

How the closures behave

A single flap folds over the end and its tuck slides between the panels — the everyday closure of retail cartons: quick to close by hand, clean on the shelf, and reopenable without damage.

This end of the carton stays open — there are no closing flaps, so the structure works as an open end for sleeves, display cartons or designs closed by other means.

Typical uses

Tuck-closed cartons are the default retail carton: cosmetics, pharmaceuticals, small hardware and boxed goods that are filled by hand or at moderate line speeds and need to present cleanly on a shelf.

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.

What is Open-Top Tuck Bottom Carton?

ECMA A20.01.01.00 is a long-seam-glued folding carton in ECMA group A (base: tuck-in flap closure system; top: no closing flaps).

Which dimensions does the Open-Top Tuck Bottom Carton 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 Open-Top Tuck Bottom Carton folds before cutting it?

Yes. The interactive 3D fold preview and the 2D dieline are generated from the same parametric structure, so the fold you watch on screen is the geometry of the sheet you cut. Open the template in the preview studio to fold it at your own dimensions.