LOOP TACK MEASUREMENT FINAT 9

This test is performed to determine the loop tack adhesion of a label or tape.

Operate the instrument in accordance with FINAT FTM 9 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 25,0±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.

Remove the backing material and form the strip into a loop (adhesive surface outside).

Position the loop into contact with the glass plate at a speed of 300 mm/min.

When full contact over the glass plate has been achieved immediately reverse the direction of the machine at a speed of 300 mm/min.

Report 5 measures in N, their mean and standard deviation calculated to 3 significant figures.