Introducing ISO 15754 - Industrial Physics  

ISO 15754 is an ISO test method for determining the tensile strength of paper and board in a  z-direction. 

There are several methods developed to measure internal bond strength or delamination strength of paper and board. This ISO tensile test is an effective and accurate choice for most paper and board samples, but it’s not applicable to corrugated fibreboard. 

Z-directional tensile testing  

The Z-directional tensile strength test (ZDT) measures the tensile strength of a specimen which is sandwiched and compressed between two adhesive tapes. After compression, the specimen is separated to determine the maximum force at rupture.

To perform a successful ISO 15754 test you’ll need a ZDT tester. This is a compact, precision computer-controlled tensile testing device that measures the internal fiber bond strength of your paper and paperboard samples. 

The ISO 15754 test does not determine the absolute strength of the paper as the measurement is affected by the tape, the pressing conditions and the test speed. And a word of caution - when tensile testing paper samples with a grammage of less than 60 g/m2 you’ll need to take extra care as the tape used in the Z-direction tensile test may reinforce the paper and affect your results.  

At Industrial Physics we work hard to take the tension out of your tensile testing! We’ve been designing, building tensile testing machines and supporting our customers with tensile testing for many years. If you’d like to read more about the tensile testing and the types of tensile test available - why not click here to read our short blog.   

ISO 15754 testing devices  

So, how can Industrial Physics improve your ISO 15754 testing? 

‘ZDT’ Z-direction tensile strength tester 84-96 

Made by Testing Machines Inc, our specialist materials testing brand, features a 1kN frame and load cell configuration standard.  

It’s ideal for your ISO 1575 Z-direction testing and comes with powerful instrument control and ZDT analysis software 

Our tensile tester is kitted out with square and circular ZDT clamps and its robust, rigid aluminum alloy frame has a compact footprint - perfect for the laboratory. 

Your global test and inspection partner for ISO 15754