The Tear Test

By using a tear test, this gives paper processors an estimated value of the future behavior of the end product (multi-layered carton, corrugated board). The tear test according to Elmendorf (ISO 1974 or TAPPI T 414), is used as the quality control criteria for the paper producer (final inspection) as well as for the processor (incoming goods quality control).  

A tear test is performed in seconds therefore, the test data must be quickly acquired and evaluated.  

The Elmendorf-Pendulum fulfills these requirements with a simple connection to a PC. Thus the raw data (energy values) can be converted into force values and then easily transferred to a Quality Data Analysis (QDA) system.  

Empirical tests can be performed on a testing machine. Tensile grips or the LPET penetration test rig may be used for such tests. Test results from LPET and Elmendorf showed a strong linear correlation. The correlation should be crosschecked for individual paper grades.  

The advantages:

• Easy PC connection via RS 232 interface.
• Connection to testXpert^® II offers all advantages of electronic data processing.
• Established robust instrument.