Description

TAPPI T 809 – Flat Crush of Corrugating Medium (CMT Test)

TAPPI T 809 om-17 describes a procedure for measuring the crushing resistance of a laboratory fluted strip of corrugatingmedium, and provides a means of estimating, in the laboratory, the potential flat crush resistance of a corrugated board.

NOTE 1: While the choice of testing instrument does not create significant differences in this test, it should be noted that when the flat crushof the corrugated board is being determined, the rigid support instrument (T 825) gives significantly higher results than the flexiblebeam instrument (T 808).