LOW SPEED RELAESE FORCE FINAT 3
Purpose of the test
This test is performed to determine the low speed release force of a label or tape.
Procedure
Operate the instrument in accordance with FINAT FTM 3 and the manufacturer’s instructions.
Leave the samples exposed for 24 h to 23°C and 50% R.H., according to ISO 187.
From each of the 5 sheets cut one strip 50,0±0,1 mm wide and minimum 175±0,1 mm long, with its long side parallel to the long side of the sheet.
Important: use a lint-free tissue and ethanol or acetone to clean the glass plates.
The glass plates should have no damage or contamination.
Glue the test piece with double sided tape on a glass plate.
Prior the facing material may be peeled from the release substrate, store them for 20 h under a pressure of 6,86 kPa (70 g/cm²).
After 4 h conditioning measure the low speed release force with a speed of 300 mm/min and a testing angle of 180° over a peel distance of minimum 100 mm.
Report 5 measures in cN/50 mm, their mean and standard deviation calculated to 3 significant figures.
FINAT FTM 3
Nr. of samples
6 test pieces per level
No special size
Levels
Level 1: 2.0÷10.0 cN/50 mm
Level 2: 15.0÷25.0 cN/50 mm
Reporting
Report 5 valid results of measurements in cN/50 mm, their mean and their standard deviation. All to three significant digits.