Compressive strength

General informations

Compressive strength can be measured using the equipment at the Physical Testing Laboratory.

The main product groups tested are:

• raw materials such as corrugated board
• finished products such as corrugated board boxes, trays or cores

These tests can be implemented after standardised conditioning, or after heat-, moisture- or cold-ageing.

Technical Data and Achievements

The following tests can be performed at the Physical Testing Laboratory:

On liners or fluting papers

• Compressive strength – short-span test, SCT, according to ISO 9895
• Determination of the flat crush resistance after laboratory fluting, CMT, according to ISO 7263-1 and ISO 7263-2
• Determination of compressive strength – Ring crush method, RCT according to ISO 12192
• Determination of the edge crush resistance after laboratory fluting, CCT, according to ISO 16945

On corrugated board

• Determination of flat crush resistance, FCT, according to ISO 3035
  
• Determination of edgewise crush resistance (unwaxed edge method), ECT, according to NF EN ISO 3037

On corrugated board boxes

• Vertical compressive strength of packaging, BCT, according to NF H 13001
• Complete, filled transport packages – Compression and stacking tests using a compression tester, according to ISO 12048

On cores

• Testing of cores – Determination of flat crush resistance, according to ISO 11093-9

On trays

• Compressive strength; BCT
• Bending resistance of the bottom of trays, according to the test method FEFCO no. 56 and the technical reference framework CFQ – Common Footprint Quality of corrugated board trays