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TAPPI T 825 om-09
- Flat Crush Test of Corrugated Board (Rigid Support Method)
- standard by Technical Association of the Pulp and Paper Industry, 01/01/2009
- Publisher: TAPPI
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1. Scope
The flat crush test (1) is a measure of the resistance of the flutes in corrugated board to a crushing force appliedperpendicular to the surface of the board under prescribed conditions. The test is satisfactory for single-faced or singlewall (double-faced) corrugated board, but not for double-wall or triple-wall corrugated board, because of lateral motionof the central facing or facings. In this method the specimen rests on an essentially rigid support and is tested at aconstant deflection rate. See TAPPI T 808 "Flat Crush Test of Corrugated Board" for the procedure in which thespecimen rests on a flexing support and is tested at a constant rate of loading. The test methods do not produce similarresults.
The flat crush test (1) is a measure of the resistance of the flutes in corrugated board to a crushing force appliedperpendicular to the surface of the board under prescribed conditions. The test is satisfactory for single-faced or singlewall (double-faced) corrugated board, but not for double-wall or triple-wall corrugated board, because of lateral motionof the central facing or facings. In this method the specimen rests on an essentially rigid support and is tested at aconstant deflection rate. See TAPPI T 808 "Flat Crush Test of Corrugated Board" for the procedure in which thespecimen rests on a flexing support and is tested at a constant rate of loading. The test methods do not produce similarresults.
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