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Testing of paper and board / cardboard

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Zwick has collaborated with the paper, board and corrugated board industries to develop a large range of test fixtures and accessories especially for their products. Multi-functional, highly flexible testing machines replace the single-purpose machines used previously, saving space and reducing investment costs.

Veröffentlicht in: Technologie
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Testing of paper and board / cardboard

  1. 1. Materials Testing of Paper and Board Intelligent testing
  2. 2. 2 Paper and board testing Testing various paper materials with Zwick 2015Paper and board testing tests on raw paper for corrugated board tests on sanitary paper tests on corrugated board and products tests on solid board and products tests on special paper, graphic paper and printing paper tests on paper composites
  3. 3. 3  box crush test > loading up to nominal load or failure  stacking crush test > defined force maintained until failure or for a specified time  Measuring to DIN EN ISO 12048  standard and customized solutions available from Zwick  no re-equipping required in conjunction with other tests Box crush test Measuring the strength and stackability of corrugated board cartons 2015Paper and board testing Box crush testing machine
  4. 4. 4  Measuring to DIN 53121 and ISO 5628  flexure test kit anvils allow for corrugated board properties  measurements with buckled or warped specimens also possible movable anvils  stiffness automatically calculated with regard to elasticity limit 4-point flexure test Measuring 4-point flexural stiffness of corrugated board 2015Paper and board testing 4-point flexure test
  5. 5. Zwick twin-bladed circular saw 5  specimen preparation is very important specimen cut must be clean and square  specimen saw for safe operation  reliable operation (adjustable cutting speed, constant feed-rate, counter) Edge crush test (ECT) Edge crush test (ECT) Measuring the strength of corrugated board with fluting aligned vertically 2015Paper and board testing  Measuring to DIN EN ISO 3037 and TAPPI T 811  ECT is important because it provides information regarding the crush resistance of the finished corrugated board packaging  compression platens can be used for other compression tests such as RCT, CMT and FCT  precision-guided compression platens for outstanding lateral stiffness
  6. 6. 6  Measuring to DIN EN ISO 3035 and TAPPI T 825  Used to determine the strength of fluting  FCT is not suitable for multi-layered corrugated boards; CMT is used for this  Extremely stiff compression platens available for micro-flute board  Thickness measurement possible during test  Compression platens can be used for other tests such as RCT, CMT and FCT  Precision-guided compression platens for outstanding lateral stiffness Flat crush test (FCT) Flat crush test (FCT) Compression loading of single-fluted corrugated board perpendicular to its surface. 2015Paper and board testing
  7. 7. 7  Measuring to DIN 53142-2  very good correlation between PET and LPET  low result variation  test papers from approx. 80g/m² to heavy duty corrugated board (no modification required)  wet testing also possible  test already national standard See also: ball burst test on tissue to DIN EN ISO 12625-9 (similar to LPET) Puncture test LPET Ball burst test on tissue Measurement of energy required to puncture the specimen Puncture test on cardboard (LPET) 2015Paper and board testing
  8. 8. 8  Measuring to DIN EN ISO 2758 or 2759  burst test is program-controlled  variable data logging rate exact determination of maximum pressure exact matching to comparative instruments possible  fast, easy diaphragm replacement  visual monitoring via test curve  numerical monitoring of diaphragm characteristics Burst test (BST) Burst test equipment Zwick burst testers are flexible in installation and use 2015Paper and board testing
  9. 9. 9  Measuring to ISO 9895 and TAPPI T826  very stiff test arrangement low reaction on specimen  load cell and specimen are on the same symmetry axis  test paper from approx. 100g/m² Strip crush test (SCT) Strip crush test (SCT) Measuring the strength of corrugated board raw paper in a compression test 2015Paper and board testing
  10. 10. 10  Measuring to ISO 12192 and TAPPI T822  precision-guided compression platens for outstanding lateral stiffness  compression platens can be used for other tests such as RCT, CMT and FCT  specimen thicknesses from 0.1mm-0.5mm Ring crush test (RCT) Strength of liner or fluting measured – similar to SCT 2015Paper and board testing Ring crush test (RCT)
  11. 11. 11  For measuring flexural strength on paper and board (DIN 53121, ISO 5628, according to ISO 2493-1) and plastic films (DIN 53350). Also for measuring the technical quality of creasings (DIN 55437-3)  flexibility provided by varied gripping systems, load cells, adjustable bending lengths and limit stops for various specimen widths  limit stops for rapid clamping and positioning of specimens  pneumatic and spring grips for reproducible, user-independent clamping  load cell applied away from moving machine components, eliminating parasitic signals  high-precision angle and force measurement 2-point flexure test 2-point flexure test Determining flexural strength and the technical quality of creasings in a 2-point flexure test 2015Paper and board testing
  12. 12. 12  Measuring to ISO 15359 and TAPPI T 549  Fast and easy handling  High precise force measurement Friction test Horizontal plane method Measuring the frictional properties of paper and paper laminates 2015Paper and board testing
  13. 13. 13  Measuring to TAPPI 541  5 specimens per paper strip can be tested  comparable to other test fixtures  lower result variation than for Scott bond test, which is used to determine similar paper properties  low consumption of double- sided adhesive tape  semi-automatic version available Internal bond test (Z-direction) Internal bond test Determining the bond strength between layers of multi-layered paper 2015Paper and board testing
  14. 14. 14 Paper Compressibility This test allows evaluation of paper behavior under compressive load, e.g. in a press 2015Paper and board testing Determination of  maximum compressive stress  total deformation before and after hold time  plastic deformation  elastic deformation Specimen Compr. platen Load cell Extensometer resoln 20 nm Loading ball Functional principle
  15. 15. 15 Tensile test Tensile test to ISO 1924 Determining tensile properties using various methods Zero span tensile test 2015Paper and board testing  Tensile tests provide information about characteristic values including stiffness, modulus, tensile strength, tear length and energy absorption Tensile test to DIN EN ISO 1924-2 und TAPPI T 494  measuring tensile properies in dry state Zero span tensile test to TAPPI T 231  Measuring the fiber strength of paper free length of 0.1mm adjustable  Modular system: specimen grips can also be used for other tensile tests
  16. 16. 16 Finch Clamp to DIN ISO 3781, TAPPI T 456 and DIN EN 12625-5  measuring wet strength tissues  modular system: specimen grips can also be used for other tensile tests  straightforward handling Initial Wet Paper to DIN 54514  measuring the minimum tensile strength of the still wet paper web  specimen grips specially developed for this purpose:  surplus liquid can drain away without the risk of pre-damaging the paper  specimen securely gripped Tensile test Finch clamp Determining tensile properties using various methods Initial wet paper 2015Paper and board testing
  17. 17. 17 Offset printing papers  measuring force-deformation behavior before printing, i.e. in defined moistened condition  very rapid procedure possible  most specimen can be placed in the specimen grips in seconds; test then starts automatically Tensile test Horizontal tensile test Determining tensile properties using various methods 2015Paper and board testing
  18. 18. Contact Zwick GmbH & Co. KG August-Nagel-Str. 11 89079 Ulm, Germany Tel: +49 7305 - 10-0 Fax: +49 7305 - 10-200 www.zwick.com/medical Connect with us: YouTube Twitter LinkedIn Science blog 2015Paper and board testing 18

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