FluteStructure
BC Flute explained
A double-wall combination of B and C flutes — balanced stacking strength and print quality.
Flute Library
5 minintermediate·Updated 2026-06-12
Overview
BC flute stacks a B flute (finer, better for print) over a C flute (taller, better for compression). It is the workhorse of medium-heavy e-commerce and export boxes because it prints acceptably while carrying 20–30% more load than a single wall C.
Specifications
| Total thickness | ~7.0 mm |
| Flutes per meter | B: 154 · C: 128 |
| ECT typical | 6.5–9.0 kN/m |
Applications
- Heavy e-commerce shipments
- Export cartons for FMCG
Comparison
| Flute | Thickness | Best for |
|---|---|---|
| B | 3 mm | Retail, print |
| C | 4 mm | Standard shipping |
| BC | 7 mm | Heavy / export |
AI Summary
BC = B (thin, printable) on the outside + C (tall, strong) inside. Total thickness ~7 mm. Preferred for heavier e-commerce and export boxes needing both graphics and stack strength.