The Tear Test
The tear test provides paper-manufacturers and processors with information regarding tear-growth resistance in the event that existing damage or incipient tears are present. Tear-growth resistance is a quality criterion used by paper-manufacturers during the final inspection and by processors in goods inwards checks.
A tear test is completed in seconds, making electronic acquisition and evaluation of test data a logical choice.
This can be achieved by simply connecting the Elmendorf pendulum to a PC, enabling tear growth resistance data to be transferred easily to a Quality Data Analysis (QDA) system.
If tear-growth resistance is only to be determined occasionally, measuring it on a materials testing machine is an option. This can be performed using tensile grips or the puncture device. Results from the puncture test have shown a strongly linear correlation with the Elmendorf Test, but should nevertheless be checked for individual paper ranges.
Advantages:
- integral RS 232 interface.
- connection to testXpert® II available with all the advantages of electronic data processing.
- robust, proven technology
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