TISSUE TENSILE STRENGTH – STRETCH AT BREAK

Purpose of the test

This test is performed to determine the tensile strength and the stretch at break of tissue paper.

Procedure

Operate the instrument in accordance with ISO 12625-4 and the manufacturer’s instructions.

Leave the samples exposed for 24 h to 23°C and 50% R.H., according to ISO 187.

Cut sufficient test pieces to enable 10 dry tests to be carried out.

Tests must be made in the arrow direction only.

It is recommended to measure the tensile strength and stretch with a sample length of at least 150 mm and a test span length of 100±1 mm between jaws.

The sample width is 50±0.5 mm if clamps allow.

Make the tensile strength measurement using the sample as supplied, i.e. 1 ply, 2 ply.

Report 10 measures of tensile in N/m and stretch at break in %, their mean and standard deviation calculated to 3 significant figures, express the results in µm.

ISO 12625-4
Nr. of samples

12 test pieces per level

No special size

Levels

Tensile:

Level 1: 100÷150 N/m

Level 2: 600÷700 N/m

Stretch at break:

Level 1: 16÷20 %

Level 2: 14÷17 %

Reporting

Report 10 valid results of measurements for tensile strength in N/m and Stretch at break in %, their mean and their standard deviation. All to three significant digits.

CEPI test 8.5