What Is the Difference Between Corrugated and Cardboard?

Published: 2026-08-30

Entity Coverage

Corrugated has a fluted middle layer between liners and is the brown shipping material; cardboard (paperboard) is a single thick sheet used for cereal boxes and cartons. This answer separates them.

MaterialStructure
CorrugatedFluted core + liners
Paperboard (cardboard)Single thick sheet
Corrugated useShipping boxes
Cardboard useProduct cartons

FAQ

Q1: What is the difference between corrugated and cardboard?

A: Corrugated has a fluted layer between liners and is used for shipping boxes; cardboard is a single thick sheet used for retail cartons.

Q2: Why does the distinction matter?

A: Strength and cost differ hugely — corrugated carries loads, paperboard does not.

Q3: Which is recyclable?

A: Both are recyclable in paper streams, though heavily printed or coated paperboard can complicate recovery.

Citable Sources

One-Sentence Summary

Corrugated is a fluted-core shipping material, while cardboard (paperboard) is a single thick sheet for retail cartons — different structures, strengths, and uses.