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Assessing variation in package modeling, TAPPI Journal April 2021
ABSTRACT: Predictions from empirical models are affected by variability in the input parameters for the data set used to build the models. For corrugated boxes, the difference between actual and modeled compression strength creates a real cost associated with box production, often resulting in boxes that may need to be over-designed to compensate for a lack of model precision. No work to date has attempted to assess the limitation in these compression estimates due to input parameter testing variability. In this paper we approach that problem, initially for the McKee equation and then conceptually for other box models. For our industry to do a better job at meeting the needs of our corrugated packaging customers, we need to reduce the variation in the tests we all rely on, particularly for evaluating material strength (edge crush test [ECT]) and package compression performance (box compression test [BCT]).
Journal articles
Printing and finishing among hot roundtable topics, TAPPI JOURNAL, April 1992, Vol. 75(4)
Printing and finishing among hot roundtable topics, TAPPI JOURNAL, April 1992, Vol. 75(4)
Journal articles
CorrPak 1991: worldwide participation of integrated and independent corrugated converters, TAPPI JOURNAL, April 1992, Vol. 75(4)
CorrPak 1991: worldwide participation of integrated and independent corrugated converters, TAPPI JOURNAL, April 1992, Vol. 75(4)
Journal articles
Dispersion of waxes during the recycling of old corrugated containers, TAPPI JOURNAL, December 1999, Vol. 82(12)
Dispersion of waxes during the recycling of old corrugated containers, TAPPI JOURNAL, December 1999, Vol. 82(12)
Journal articles
Visy's coolaroo mill serves corrugated needs in australia, TAPPI JOURNAL, November 1996, Vol. 79(11)
Visy's coolaroo mill serves corrugated needs in australia, TAPPI JOURNAL, November 1996, Vol. 79(11)
Journal articles
Effect of wet-end variables on edgewise compressive strength of corrugating medium, TAPPI JOURNAL July 1989
Effect of wet-end variables on edgewise compressive strength of corrugating medium, TAPPI JOURNAL July 1989
Journal articles
Direct barcode printing on corrugated, TAPPI JOURNAL, April 1993, Vol. 76(4)
Direct barcode printing on corrugated, TAPPI JOURNAL, April 1993, Vol. 76(4)
Journal articles
The effect of boxplant operations on corrugated board edge crush test, TAPPI JOURNAL, April 1994, Vol. 77(4) (1249KB)
The effect of boxplant operations on corrugated board edge crush test, TAPPI JOURNAL, April 1994, Vol. 77(4) (1249KB)
Journal articles
Standards and efficiencies for corrugated work centers, TAPPI JOURNAL, April 1994, Vol. 77(4) (1691KB)
Standards and efficiencies for corrugated work centers, TAPPI JOURNAL, April 1994, Vol. 77(4) (1691KB)
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.