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Paper Chemistry for New Markets: Vendor Perspective, November/December 2023 Paper360º

What’s Going to Happen When All This Announced Containerboard Capacity Hits the Market?, Paper360º May/June 2022

The Conversion of Corra Gator-Boardy Part 2: Printer Sections, Paper360º March/April 2023

4evergreen: In Search of Perfection in Packaging Circularity, Paper360º March/April 2022

4evergreen: In Search of Perfection in Packaging Circularity, Paper360º March/April 2022

DS Smith’s Kemsley Mill: A Model for Secure Operations and Enhanced Connectivity, Paper360º May/June 2024

Graphic Packaging International: Safety Never Stops, Paper3

Graphic Packaging International: Safety Never Stops, Paper360º January/February 2022

A Closer Look at Tooling, Paper360º September/October 2022

Digital Printing Helps Boxmakers Embrace the Future, Paper360º March/April 2023

Progroup Turns 25, Paper360º March/April 2018

Progroup Turns 25, Paper360º March/April 2018

Evaluating hardness and the S-test, TAPPI Journal March 2019

ABSTRACT: The corrugated industry typically quantifies crush resistance using the Concora corrugated medium test (CMT) on fluted medium or flat crush on combined board. These tests compress the materials until the point of complete failure of the flutes. Combined board elastically resists crushing forces until a certain point, the hardness of the structure, while additional load causes permanent damage and deformation. This study investigates how hardness can be measured directly from a load curve collected during CMT (or flat crush) testing and how it varies throughout the North American paper supply. It also explores how hardness corre-lates with the values obtained from the newly developed S-test. This new test method deserves further study as a potentially more appropriate specification for crush resistance of corrugated medium.