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TAPPI T822
- Ring Crush of Paperboard (Rigid Support Method)
- standard by Technical Association of the Pulp and Paper Industry, 01/01/2007
- Publisher: TAPPI
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The ring crush test correlates with edgewise compression strength of paperboard(1).This method is intended for paperboard between 0.28 mm (0.01 in.) and 0.51 mm (0.02 in.) thick.