Search
Use the search bar or filters below to find any TAPPI product or publication.
Filters
Content Type
Publications
Level of Knowledge
Committees
Event Type
Collections
Conference papers
Digital Print - Where does it fit in Corrugated?, 2015 CorrE
Digital Print - Where does it fit in Corrugated?, 2015 CorrExpo Conference
Conference papers
Computer-to-Belt - Direct Laser-Engraved Ultra HD Flexo Prep
Computer-to-Belt - Direct Laser-Engraved Ultra HD Flexo Preprint, 2015 CorrExpo Conference
Conference papers
Fosber Dual Divert - Master 400 Cut-Off Knife, 2015 CorrExpo
Fosber Dual Divert - Master 400 Cut-Off Knife, 2015 CorrExpo Conference
Conference papers
Eliminating Caustic & Borax From Your Plant, 2015 CorrExpo C
Eliminating Caustic & Borax From Your Plant, 2015 CorrExpo Conference
Conference papers
New Engraving Technology for Glue Applicator Rollers, 2015 C
New Engraving Technology for Glue Applicator Rollers, 2015 CorrExpo Conference
Conference papers
Nanotechnology - How to Think “Inside the Box”, 2015 CorrExp
Nanotechnology - How to Think “Inside the Box”, 2015 CorrExpo Conference
Journal articles
Corrugated medium strength assessments in different flute structures, TAPPI Journal April 2026
ABSTRACT: Recent advancements in our ability to evaluate papers and our understanding of the mechanics of box failure have brought a renewed focus on measuring the performance of corrugated medium and an associated evolution of paper measurement approaches. This study evaluates the load curves, Hardness (where the fluted structure’s loading shifts away from an elastic response), and Concora medium crush test (CMT) values for a range of corrugated mediums in different common flute geometries. The shape of the load curve is a function of the geometry of the fluting profile and the relative stiffness of the paper, with smaller flutes and heavier papers reaching both the Hardness value and the ultimate load at lower deformation. Nonetheless, while the specific dynamics during the loading process vary, Hardness and CMT values correlate linearly between flute structures, even when testing specimens after different equilibration periods post-fluting. These correlations confirm the applicability of the standard A-flute CMT test to a broad range of papers and potential combined board flute structures, supporting quality assurance processes for medium production and optimization in corrugated board manufacturing.