Z-Direction Tensile Test

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ZDT (Z-Direction Tensile)

This test uses double-stick tape to attach the sample to anvils in a test instrument. The anvils are then separated while measuring the maximum force required to delaminate the sample.  ZDT is a measure of the internal bond strength of paper or paperboard. It is particularly useful for measuring the internal bond strength of single-ply sheets. The test is run according to TAPPI Test Method T541.