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Hanatek Carton Force Analyser (CFA)

  • Measures all the forces required to erect and fill cartons
  • Crease resistance (springback), board stiffness, carton opening force, crease opening force
  • Variable sample sizes and small crease testing including HL
Industries & Applications
  • Cartonboard
  • Packaging

What does the CFA measure?

The Hanatek Carton Force Analyser (CFA) measures the forces that limit the running speed of folding box board packaging.

By measuring the stiffness of the substrate and crease bending resistance, the user can optimise cartons for faster running and packaging speeds. The instrument allows individual creases to be analysed identifying problem areas in packaging design or manufacture.

Industry research indicates that the packaging speeds of pre-glued skillets is governed by the energy required to open creases. The Hanatek CFA is the first instrument to isolate and accurately measure this key parameter.

Test types

The instrument has pre-loaded test instructions that ensure samples are tested to international standards.

Board Stiffness

Measures the stiffness of the board sample to ISO 2493. The stiffness of the sample is measured twice, once with the printed side of the carton facing forward and the second time with the printed side facing to the rear.

The resultant force is displayed in N, gF or mN. The average of the two measurements is calculated as well as the Min, Max and standard deviation on a multiple sample test.

Bending resistance results
Measuring board stiffness

Crease recovery stiffness

Measures the crease recovery to BS 6965. During the test, the Instrument will fold the crease under test through the preselected crease angle and hold it there for a pre‐determined number of seconds. It will then measure the force exerted on the crease as the instrument rotates the sample throughout the desired test angle.

The peak force is displayed as well as the angle that this force was reached. The resultant force is displayed in N, gF or mN. The average measurement is calculated as well as the Min, Max and standard deviation on a multiple sample test.

Crease recovery stiffness test
Crease stiffness test

Rounded corner crease resistance: Rounded corner creases can be tested on the CFA (requires additional jaw).

Crease opening force

During the test the Instrument will un‐fold the crease under test through the preselected angle. The resultant force is displayed real time on the screen as the sample is rotated through the preselected test angle.

At the end of the test the resultant peak force is displayed in N as well as the energy in mJ required to bend the sample.

Unfolding force graph
Crease opening force jaw test

Carton opening force

This test will record the forces involved in erecting a skillet into an open carton simulating the process during machine opening. This test also allows the user to identify cartons that will not run smoothly due to a poor ratio of crease to board stiffness.

The resultant force is displayed real time on the screen as the sample is rotated through the preselected test angle. At the end of the test the resultant maximum crease stiffness is displayed in N as well as the energy in mJ required to bend the sample.

Carton opening graph
Carton opening force

Ratio of Crease to board stiffness

The relationship between board stiffness and crease stiffness is an important factor in the running performance of cartons. This test will allow the user to quickly calculate the crease to board stiffness ratio by measuring both crease stiffness and board stiffness to the relevant standards. The Min, Max and standard deviation is also calculated on a multiple sample test.

Crease to board stiffness test
Ratio jaw test

Folding factor

Measure the uncreased sample and the creased sample. Calculate the ratio between samples and the ‘work done’ in mJ using the force vs rotation information.

Folding factor test
Measuring folding factor

Rotation speed

Automatic, user selectable speed of rotation. This removes errors associated with manual rotation.

rotation speed