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TAPPI T 825 PDF
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Flat Crush Test of Corrugated Board (Rigid Support Method)
| Published by | Publication Date | Number of Pages |
| TAPPI | 2014 | 3 |
TAPPI T 825 – Flat Crush Test of Corrugated Board (Rigid Support Method)
The flat crush test is a measure of the resistance of the flutes in corrugated board to a crushing force applied perpendicular to the surface of the board under prescribed conditions.The test is satisfactory for single-faced or single wall (double-faced) corrugated board, but not for double-wall or triple-wall corrugated board, because of lateral motion of the central facing or facings.In this method the specimen rests on an essentially rigid support and is tested at a constant deflection rate.
See TAPPI T 808 “Flat Crust Test of Corrugated Board” for the procedure in which the specimen rests on a flexing support and is tested at a constant rate of loading.The test methods do not produce similar results.
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