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Butterfly-lock envelope sleeve
Preview image

The real blank at this size, folded by the same engine as the studio. The artwork is a sample from a fictional brand — swap in your own in the editor.

DM-BUTTERFLY-LOCK-01Cards & tags

Butterfly-lock envelope sleeve dieline

A glueless sleeve: curved side flaps fold in, then two split-circle leaves on the inner cover pop through a slot in the outer cover. Shallow for an envelope sleeve, deeper for a small box. A parametric template — change the length, width and height and every panel, tuck and glue flap is redrawn to match.

Inside80 × 80 × 5 mm
Outside81 × 81 × 7 mm
Flat blank141.6 × 232.2 mm
Download the dielinePro
Flat dieline preview

Sign in to download. Dieline downloads are part of Pro: PDF, Illustrator, SVG and DXF, cut, crease and bleed on separate layers, without a watermark. See plans

Reference
DM-BUTTERFLY-LOCK-01
Inside size
Length 80 · Width 80 · Depth 5 mm
Size range
Length 40–350 · Width 40–350 · Depth 2–120 mm
Manufacturing
81 × 81 × 6.5 mm score to score · inside vs outside sizes
Parts
One blank
Board area
0.021 m² · about 21 up on a 720 × 1020 mm sheet
Default board
SBS white board 350 g · 0.5 mm caliper
Board options
SBS 350SBS 300FBB 400Kraft 350GD2 350Black 350SBS 18 pt
Good for
butterfly lockbutterfly envelopeenvelope sleeveinterlocking envelopeglueless envelopelocking envelopecard sleevegift card sleevehotel kitsewing kit

The flat dieline

Exactly what the downloads contain, drawn from the template at its default size, with a 3 mm bleed. How to read a dieline.

  • Crease
  • Cut
  • Bleed 3 mm
Butterfly-lock envelope sleeve flat dieline with cut and crease lines

How the blank is sized

Score-to-score panel sizes of this DM-BUTTERFLY-LOCK-01 blank at the default size, with the formula each one follows. L, W and H are the inside dimensions; T is the board caliper (0.5 mm for SBS white board 350 g). Change the size or board in the editor and every panel is recalculated.

PanelSize (mm)Formula
Base81 × 81L + 2T × W + 2T
Front81 × 6.5–
Inner cover (leaves)79 × 68.8–
Back81 × 7–
Outer cover (slot)79 × 68.8–
Left6 × 80H + 2T × –
Curved dust flap ×224.3 × 79–
Right6 × 80H + 2T × –

Adjustable in the editor

Beyond the size and board, this structure exposes 4 options; the template and 3D preview follow each change.

  • Leaf radiusmm
  • Leaf gapmm
  • Cover depthmm
  • Side flap depthmm

Ready-sized butterfly-lock envelope sleeve presets

The same structure with sizes, boards and options set for a use.

Similar structures

Other structures built in a similar way, matched on code family, category, closures and proportions.

All cards & tags templates

Make this butterfly-lock envelope sleeve yours

Open it in the editor to set your size, drop artwork on each face, check bleed and safe areas, and export print-ready PDF with the dieline on its own layer — or stage it in a 3D scene for a mockup.