Sheet 02-12 · Slotted container with meeting inner flapsScale: schematic · Unit mm

Corrugated

Slotted container with meeting inner flaps

Corrugated slotted container whose inner flaps meet in the center and close the entire opening; the outer flaps sit above them and leave an adjustable gap – two layers for bottom and lid.

Shipping

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Dieline: Slotted container with meeting inner flaps — Vector preview from the catalogue, default dimensions

Dimensions and limits

Default dimensions of the template and the permitted range in mm.

Dimension	Default	Range
Length	300 mm	50–1,200 mm
Width	200 mm	50–1,200 mm
Height	200 mm	50–1,200 mm

Parameters of this construction

4 parameters with default value and limits, adjustable in the editor.

Parameter	Default	Range	Note
Glue flap`glueFlap`	35 mm	20–60 mm	Width of the glue flap used to glue the blank into a tube. The material requires a minimum width.
Glue flap angle`glueFlapAngle`	15°	0–20°	Bevel at the ends of the glue flap; facilitates folding and erection.
Flap gap`flapGap`	5 mm	0–12 mm	Gap between neighboring flaps or walls; at least approximately the material thickness.
Outer flap gap`outerFlapGap`	50 mm	0–600 mm	Distance between the free edges of the two outer flaps in the center of the opening (0 = the outer flaps meet); each outer flap remains at least 20 mm high.

Assembly

Glue or stitch the glue flap to the opposite wall. Erect for filling, fold in the inner bottom flaps until they meet in the center, place the outer flaps over them, and tape; do the same at the top.

Grain direction

Grain direction parallel to height (check)

Reference note

Reference classification still pending

Labels such as “similar to FEFCO” or “ECMA family, unconfirmed” are for orientation only. The templates are our own constructions; an assignment to a standard code is unconfirmed and not a trademark claim.

Frequently asked questions about this template

Which flaps meet in the center?

The inner flaps on the sides close the entire opening and meet at its center. The front and back outer flaps sit above them. Their edges leave a 50 mm gap in the starting example. Do not confuse this gap with the slots between adjacent flaps.

Can I close the outer flap gap completely?

outerFlapGap can be 0 mm; the outer flaps then also meet in the center. The inner flaps remain underneath. This changes the visible print area and closure. Recalculate after the change and check both material layers and taping on the erected sample.

How large can the gap be?

The general range extends to 600 mm. In practice, outerFlapGap.geometric.keepsOuterFlap limits the gap based on the narrow side of the opening so each outer flap retains at least 20 mm. These 20 mm are a construction limit, not confirmation for your taping or production process.

Why does a long box need long inner flaps?

The inner flaps close the opening from the sides to the center. A longer box requires them to reach farther. This increases the flat blank size even when the width stays small. Check the bounding box against sheet size and the folding sequence on the sample; the starting example does not guarantee arbitrary proportions.

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