EDGEWISE CRUSH RESISTANCE (ECT) lab cut
Purpose of the test
This test is performed to determine the edgewise crush resistance of corrugated board performed on samples cut in the client laboratory.
Procedure
Operate the instrument in accordance with ISO 3037 and the manufacturer’s instructions.
Leave the samples exposed for 24 h to 23°C and 50% R.H., according to ISO 187.
Cut at least 10 pieces of 100 x 25 mm² out of the board with the flutes parallel to the side of 25 mm.
Test the pieces with the side of 100 mm parallel to the plates of the crush tester.
Report 10 measures in kN/m, their mean and standard deviation calculated to 3 significant figures.
ISO 3037
Nr. of samples
2 test pieces per level
Sample size 150 x 300 mm²
Special size A4, A3
Levels
Level 1: 6.0÷8.0 kN/m
Level 2: 10.0÷15.0 kN/m
Reporting
Report 10 valid results of measurements in kN/m, their mean and their standard deviation. All to three significant digits.