Ply Bond Tester / Z-Direction Tensile Tester
An equipment to test the internal fiber bond strength (z-direction tensile) of paperboard.
The internal bond strength of paperboard provides an indication of expected performance, e.g., strength of board in relation to glue bonding at carton side seams, and possible delamination on scoring, or use of high tack coatings.
This has also been found useful for the evaluation of coated fine papers.
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