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Bending Test in Paper - Cardboard Packages

Bending Test in Paper - Cardboard Packages

Bending Test in Paper - Cardboard Packages

Bending stiffness is an important parameter for paper and cardboard packaging. In particular, it is one of the most important features of cardboard packaging. Bending stiffness is tested in different ways in paper and cardboard packages.

Taber Stiffness: Paper and cardboard packages are tested as two-point bending stiffness. Results are expressed in mN (bending resistance) or mNm (bending torque).

BS 3748 Method for determining the resistance of paper and board to bending
ISO 2493 Method for determining the resistance of paper and board to bending


Clark Hardness: It is the method in which a strip sample bent under its own weight is measured as the free length in centimeters.

Tappi T451 Bending Properties of Paper (Clark Hardness)


Resonance Hardness: It is a test method in which the resonance hardness of a sample is measured.

ISO 5629 Paper and cardboard - Determination of bending stiffness - Resonance method

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