This International Standard specifies two test methods, A and B, for determining the adhesion strength
between constitutive elements of a conveyor belt, i.e. between plies and between covers and carcass. Basic
test conditions are in conformity with ISO 36.
It is applicable to all types of construction of conveyor belting with the exception of belts containing steel cord
reinforcement, and textile-reinforced belts with a full-thickness tensile strength of less than 160 N/mm. It is not
suitable or valid for light conveyor belts as described in ISO 21183-1[1].
NOTE Methods A and B are alternative options, but the mean adhesive force values calculated for the two methods
can be different. Also, as both methods might not be equally suitable for all belt constructions, it is advisable that the
advice of the belt manufacturer be sought.
ISO 252:2007 history
2023ISO 252:2023 Conveyor belts — Adhesion between constitutive elements — Test methods
2007ISO 252:2007 Conveyor belts - Adhesion between constitutive elements - Test methods
1988ISO 252:1988 Conveyor belts; ply adhesion between constitutive elements; test methods and requirements
1975ISO 252:1975 Conveyor belts — Minimum requirements for ply adhesion and method of test