This method, T 414,  uses an Elmendorf-type tear tester to measure the force required to tear multiple plies of paper through a specified distance after the tear has been initiated.  The measured results can be used to calculate the approximate tearing resistance of a single sheet. 

 

 

The amount of sample necessary for tear testing is highly dependent on the tear properties of the sample – (i.e. a sample with low tear strength will require more sample than a sample with a higher tear strength.) For most samples ten, 8.5” x 11” sheets of paper should be adequate. For newsprint or other paper with a low tear strength twenty, 8.5” x 11” sheets are necessary. Ten replicates will be performed in both the MD and CD directions. If additional testing is requested, twenty, 8.5” x 11” sheets of paper are required. If sample quantity is limited, testing can be done by sampling fewer sheets and/or performing fewer replicates. 

 

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IPS cannot sell or otherwise provide standards, specifications, or test procedures to third parties.