Crease and Board Stiffness Tester CBT1

The CBT1 Crease & Board Stiffness Tester measures both carton crease recovery and board stiffness to many international standards including BS6965 and PMI 068.

Measurement of these parameters gives carton board manufacturers, printers and packaging companies the ability to predict the 'run-ability' of a sample board or finished carton before committing valuable materials or machine time.

Board stiffness and crease recovery are key characteristics that affect the running performance of cartons on high speed packaging machines.


  • Measure crease recovery force at 90˚
  • Measure board stiffness at 15˚

The test result (after 15 seconds) is displayed on the screen. A countdown time to test completion is shown
Crease to board stiffness ratio is calculated automatically and displayed on screen

CBT1 Screen Image
  • Requires no external software for operation or analysis
  • After multiple samples are tested, the statistics (min, max, average) are updated on screen.
  • Optional test jaw for rounded corner packaging
  • Optional results printer to output test results to a label
  • Choice of sample cutter for the preparation of both carton crease and board stiffness samples
    • Universal Sample Cutter, single step ultra-quick sample preparation of both sample sets. Bespoke dies are available allow the preparation of all creases on a carton pack
    • Traditional crease and board sample cutter


Range 0-450g force
Accuracy 0.1g
Resolution 0.1g
Power 110/240V 50/60 Hz (please specify when ordering)
Weight 7.6kg
Size (H) 230 x (W) 175 x (D) 250mm


  • BS 6965 Creasing properties of carton board. Method for determination of crease recovery (spring back) of 90° fold
  • BS 3748 Method for determination of resistance to bending of paper and board
  • BS ISO 2493-1:2010 Paper and board - determination of bending resistance
  • TAPPI T556 (15° ONLY) Bending resistance of paper and paperboard by single-point bending method
  • SCAN P29 Bending resistance
  • PMI 068 – Philip Morris, Determination of the spring-back force of packaging materials.


Applications include:

  • Printed cartons
  • Flexible packaging
  • Printing, Rubber
  • Linoleum, Leather, Paper
  • Foils, Coatings, Plastics
  • Textiles, Composites

Who measures board stifffness and crease resistance?

Board stiffness and crease resistance are important measures that indicate how a finished carton will run on an automated glueing, filling or packaging line.

Substrate manufacturers, printers, converters and any manufacturer who fills or packs products in cartons can use this measurement to optimise production.

QA departments use these instruments to check the running attributes of finished cartons are prior to conversion and filling, reducing lost production time from slow running or difficult to convert packaging.