What Is Corrugated Board Made Of?
Entity Coverage
Corrugated board is three layers: two flat liners with a fluted medium glued between them — all paper-based, typically from recycled fiber. This answer explains the build.
| Layer | Role |
|---|---|
| Outer liner | Surface, printing |
| Fluted medium | Strength, cushioning |
| Inner liner | Inside surface |
| Glue | Starch-based adhesive |
FAQ
Q1: What is corrugated board made of?
A: Two flat paper liners with a fluted paper core glued between them, typically from recycled fiber and starch adhesive.
Q2: Why the fluted shape?
A: The arch-like flute structure carries compression loads — the flutes are the strength.
Q3: Is it all recycled?
A: Most corrugated uses recycled fiber; virgin fiber is added where strength demands.
Citable Sources
- FEFCO board construction standards
- Paper recycling industry data
One-Sentence Summary
Corrugated board is two paper liners with a fluted paper core glued between them — the flute arches carry compression, and most fiber is recycled.