Dynamic Stiffness Tester - avoiding the crush

A new invention by Ensis Papro to measure the stiffness of corrugated boxes is helping exporters reduce the risk of product damage through faulty packaging.

The instrument, known as a Dynamic Stiffness Tester", can be used by corrugated board manufacturers to avoid damage that occurs during the manufacturing process. The strength of corrugated boxes that can be deduced from stiffness is a good indicator of their general performance.

Corrugated boxes are the preferred packaging medium for foodstuffs. In order to ensure the safe handling and storage of valuable produce, packaging material often needs to be overspecified to make up for deficiencies in the box manufacturing process. By providing a reliable quantification of board quality, shear stiffness measurements can reduce these deficiencies.

The Dynamic Stiffness Tester works by oscillating or vibrating a sample of board to measure its torsional stiffness. The instrument requires only a small sample cut from the board or box, which is placed in the instrument. Ten seconds and four oscillations later, an accurate result for stiffness is produced.

The instrument's ability to measure damage to corrugated boxes has been shown to be quick, reliable and repeatable. Experienced use of the Dynamic Stiffness Tester allows manufacturers to reduce the amount of material used without reducing performance in corrugated board or boxes.

For information on how to obtain a Dynamic Stiffness Tester contact