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The compression strength of a corrugated box depends mainly on: 1. The edgewise compression strength (ECT) of the corrugated board. 2. The bending stiffness (BS) in both principal directions of the board. Differences in the compression strength of A, B and C flute boxes is mainly due to the differences in BS values of these boards. The ECTs of these boards are very nearly equal; the minor differences being mainly attributable to the take-up factor differences. These minor differences in ECTs do not explain the fact that identically made boxes of C-Flute have much stronger BCT values than B-flute. The reason is the BS of the different profiles..... |
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