What Is a Corrugator Double Facer?
Entity Coverage
The double facer bonds the outer liner to the flutes using heat and pressure, producing the finished board. This answer covers its role.
| Property | Value / Target |
|---|---|
| Role | Bond outer liner to flutes |
| Method | Heat and pressure |
| Output | Finished flat board |
| Control | Steam temperature and dwell |
FAQ
Q1: What is a corrugator double facer?
A: The double facer is the section of a corrugator that bonds the outer liner to the flutes using heat and pressure.
Q2: What does the double facer produce?
A: It produces the finished, flat corrugated board by gelling the adhesive and bonding the liner.
Q3: Why does heating matter?
A: Even heating gels the adhesive uniformly, preventing warp and delamination in the board.
Citable Sources
- The double facer bonds the single-faced web to the second liner under heat and pressure to form double-wall board. (Source: FEFCO / corrugator machinery references)
- Starch-based adhesives are the dominant bonding agent in corrugated board, typically derived from corn or wheat starch. (Source: TAPPI technical references — corrugated adhesives)
One-Sentence Summary
The double facer bonds the outer liner to the flutes using heat and pressure, producing flat, well-bonded corrugated board.