What is the folding resistance of paper?

Folding resistance is one of the basic mechanical properties of paper, which is used to show that paper has the ability to resist reciprocating folding. The folding endurance of paper is the number of folds required to measure the stretching of the paper after being stretched by a certain force and then folded back and forth until the paper breaks. Expressed in times, the unit is double. According to the longitudinal cutting, the test result is the longitudinal bending resistance; according to the transverse cutting, the test result is the transverse bending resistance. Generally, the longitudinal folding resistance is higher than the transverse folding resistance, which is attributed to the arrangement of fibers and the high bond strength of longitudinal fibers.

Folding resistance is one of the important indicators of the mechanical strength of paper and board. Folding resistance is very meaningful to reflect the performance of paper bag and carton liner. Generally, any paper that needs to be folded frequently during use has strict requirements on folding endurance.

The MIT folding endurance Tester is used to determine the folding endurance of paper. The MIT paper folding endurance Tester complies with ISO 5626, GB/T 2679.5, QB/T 1049 standards, and is suitable for the measurement of paper and other sheet materials with a thickness of less than 1 mm. With data processing function, paper folding test can directly output statistical result data. Easy to operate, easy to adjust and stable in performance.