Mit paper folding endurance

Mit paper folding endurance 

This tester is used for determining the folding endurance strength of paper and paper board, using hang type weight method (QT-6014-A). The specimen is clamped by upper and lower grips. Exert the specified load onto the upper grip to have the specimen bear a certain tension. The specimen is vertically placed against the ground surface and is folded to two sides by lower grip. Record the numbers of folding after the specimen breaks.