Overview
LABO LB-MIT135 Folding tester (MIT method) is used to measure the folding fatigue strength of papers with a thickness of less than 0.25mm and a Tensile Strength greater than 1.33kN/m, as well as Cardboard and Miscellaneous sheet materials with a thickness of 0.25~ 1.40mm. Test the flexibility and elongation characteristics of the material. The sample holding length is 140mm, the width is 15mm, and the double folding angle is 135 °. The double folding rate is 175 times/min until the sample breaks, and the log of the number of double folding times is recorded.
Features
1. Driven by stepper motor, smooth transmission and low noise.
2. The attached 9.81N (1kg) weight can calibrate the spring tension at any time to ensure accurate and reliable test results.
3. LCD Chinese interface display measurement and control system, fully automatic test completion, automatic reset of chuck, test data statistics, memory of test results and printout of experimental results.
4. Equipped with special test weight, easy to check the instrument during the period, Measurement calibrated.
Principle
Use the sampling device to evenly cut the standard sample from the sample, turn the instrument folding head to the vertical seam, adjust the required spring tension through the indicator and lock the tension bar, clamp the sample in the clip, and then release the tension bar. Apply the specified tension to the sample, turn on the instrument and start folding the sample until the sample breaks, the instrument will automatically stop counting and record the number of double folds when the sample breaks.
Applications
Paper, Cardboard, Sheet Material
Standards
GB/T457、ISO5626、TAPPI T511、ASTM D2176
Steps
1. Use sampling equipment to evenly cut the standard sample from the sample.
2. Turn the instrument folding head to the vertical seam.
3. Adjust the required spring tension through the indicator and lock the tension bar.
4. Clamp the sample in the clamping port.
5. Release the tension lever and apply the specified tension to the specimen.
6. Turn on the instrument and start folding the specimen until it breaks.
7. The instrument automatically stops counting and records the number of double folds when the sample breaks.
Notice
When clamping the specimen, do not touch the folded part of the specimen.
The entire surface of the specimen should be in the same plane.
• The edge of the sample should not be exposed from the fixed surface of the swing chuck.
