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ANSI/TAPPI T 809 om-22
Flat crush of corrugating medium (CMT test)
This method describes a procedure for measuring the crushing resistance of a laboratory fluted strip of corrugating medium, and provides a means of estimating, in the laboratory, the potential flat crush resistance of a corrugated board. Other grades may not correlate with their potential.
NOTE 1: While the choice of testing instrument does not create significant differences in this test, it should be noted that when the flat crush of the corrugated board is being determined, the rigid support instrument ( T 825) gives significantly higher results than the flexible beam instrument (T 808).
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Technical Association of the Pulp and Paper Industry [tappi]
Technical Association of the Pulp and Paper Industry [tappi]