TISSUE – BULKING THICKNESS
Purpose of the test
This test is performed to determine the bulking thickness of a stack of tissue sheets.
Procedure
Operate the instrument in accordance with ISO 12625-3 and the manufacturer’s instructions.
Leave the samples exposed for 24 h to 23°C and 50% R.H., according to ISO 187.
Perform two measures for each stack for bulking thickness.
Report 10 measures in mm, their mean and standard deviation both divided by the number of sheets in the stack (eight), calculated to 3 significant figures.
ISO 12625-3
Nr. of samples
6 test pieces (6 stacks containing 8 sheets, 1 stack reserve) are provided per level.
No special size
Levels
Level 1: 0.15÷0.25 mm
Level 2: 0.40÷0.50 mm
Reporting
Report 10 measures, their mean and standard deviation both divided by the number of sheets in the stack (eight). All to three significant digits.