Flat Crush Resistance Testing

Corrugated board is used extensively in packaging creation and design. Putting your corrugated materials through various testing scenarios, including this Flat Crush Resistance testing, helps us instruct you on how to better design the board itself and your packaging in general.

This way, when your packaging experiences flattening crush forces during the manufacturing or shipping of your product to its end location, your packaging has the greatest strength possible to resist any flattening crush forces.

Flat Crush Resistance testing measures the ability of a board to resist crushing when loaded perpendicularly to the surface – this evaluates flute rigidity.

Package testing and materials testing are important parts of the research and development process. Testing helps ensure that all corrugated board and new package designs are created specifically to handle real-world situations.


ISO 3035

ISO 3035: Corrugated fibreboard – determination of flat crush resistance.

Fibreboard shipping containers can be subjected to compressive forces in the thickness direction as part of the manufacturing process, as well as during shipment or storage. These forces can compress the flute structure and reduce the structural integrity of the corrugated material. Resistance to this type of crushing is an important measure of the performance characteristics of the container. This International Standard specifies a method for the determination of the flat crush resistance of corrugated fibreboard used in the manufacture of shipping containers and is applicable to single-faced and single-wall (double-faced) corrugated fibreboard.

TAPPI T825: Flat Crush test on corrugated board – rigid support method.

The flat crush test is a measure of the resistance of the flutes in corrugated board to a crushing force applied perpendicular to the surface of the board under prescribed conditions. The test is satisfactory for single-faced or single-wall corrugated board. In this method the specimen rests on an essentially rigid support and is tested at a constant strain rate.


MTS Criterion: Model 42

Maximum Load: 1,000lbs
Software: Testworks