Folding Endurance Tester（MIT法）

For measuring the thickness of less than 0.25mm, the tensile strength is more than 1.33kN/m of the paper, and the thickness of (0.25~1.40) mm board and other sheet materials folding fatigue strength, flexibility and elongation of assessment material characteristics. Specimen holding length 140mm, width 15mm, double fold angle is 135 degrees, with 175 times /min double fold until the specimen is broken, record the number of double fold times.

Product features

Stepper motor drive, smooth transmission, low noise.

The 4.91N, 9.81N and 14.72N weights are randomly arranged to calibrate the tension of the spring at any time, so that the instrument can be checked during the period, calibrated and calibrated, and the test result is accurate and reliable.

LCD Chinese interface display and control system, complete automatic test, automatic reset of the chuck, test data statistics, memory of test results and output of experimental results.

Technical index

Double fold times: (1~6 * 104) times

Folding resistance (logarithm): 0~4.78

Folding angle: left and right (135 ± 2) degrees

Folding speed: (175 ±10) times / min

Radius of folding mouth: (0.38 ± 0.02) mm

Fold width: (19 ± 1) mm

Friction resistance: 9.81N is less than 0.245N

Folding head crevice mouth specification (0.25~0.50): mm (0.50~0.75), mm (standard).

(0~0.25) mm, (0.75~1.00) mm, (1.00~1.25) mm (optional)

Tension adjustment range: 4.91N~14.72N, plus 9.81N tension (1 kg weight), spring compression produces at least 17mm stress deformation, folding folder eccentric rotation caused by tension changes of not more than 0.343N

Test description

With uniform sampling equipment from samples cut from standard samples, turn the head to the seam vertical folding instrument, indicator by adjusting the desired spring tension and tension lock rod, clamping specimen in the clamping hole, and then release the tension rod, applying the specified tension to the sample, open the equipment began to fold specimens, until the specimen breaks, instrument it will automatically stop counting, record number of test specimens of double fold.

Note: when the sample is clamped, the folded part of the sample shall not be touched, so that the entire surface of the sample shall be in the same plane, and the edge of the sample shall not be exposed from the fixed surface of the oscillating collet.

Applicable standard

GB/T457 ISO5626 TAPPI T511 ASTM D2176

Device parameter

Chinese measurement and control LCD screen life: about 50 thousand hours

Power supply: AC220V + 22V 50Hz 0.5A should be reliably grounded

Overall dimensions (L * w * h): (330 * 250 * 400) mm

Net weight: 37kg

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Folding Endurance Tester