PEEL RESISTANCE - EN 431:1994 (adapted)
1.1 Tensile testing apparatus
1.2 A transparency template
3*150x50 mm samples running in the machine direction.
3*150x50 mm samples running in the transverse direction.
3. ENVIRONMENTAL CONDITIONS
Temperature: 23 (+/- 2) °C
Relative humidity: 50 (+/-) 5%
4. TESTING PROCEDURE
4.1 Stabilize the samples for 24 hours and perform the test in the same environmental conditions
4.2 Separate the two layers over a sufficient length so that the test piece can be fixed in the tensile testing apparatus’ jaws
4.3 Set the jaws at approximately 50 mm distance from each other
4.4 Place the test piece in the jaws in a way that ensures tension is applied evenly over the sample width
4.5 Set the speed of separation at 100 (+/-5) mm/min and start the test.
4.6 Record the separation force, which continues beyond the initial separation (if the layers cannot be separated, then this result should be noted and no further test shall be necessary)
4.7 With the help of a transparency template, check the forces at the cross-points as values in N
- the mean value of the peel resistance for each test piece to the nearest 5 N
- the mean value of the peel resistance for each direction to the nearest 5 N per 50 mm
5. ASSESSING TEST RESULTS
Per the contract