MIT Tester China Manufacturer and Supplier
MIT Folding Endurance Tester is a device used to measure the ability of materials to resist repeated bending, folding, and creasing. It can be used to test a variety of materials, including paper, plastic film, aluminum foil, and other flexible sheets, to evaluate their most basic physical properties.
The MIT folding tester is a necessary instrument for determining paper and board folding endurance.
The MIT tester features 2 clamping grips for holding the specimen vertically. The upper grip can be applied with a specified tension, and the lower grip performs a side-to-side oscillating action to complete the test. The newly developed MIT folding tester by AMADETECH is an intelligent and automatic machine. It is equipped with a colorful touch screen to enable you to have a convenient and efficient interaction with the device. The MIT tester is available to automatically record and store the number of folds for multiple test specimens and support on-site printing of test results.
Touch screen version
- If your paper sample thickness is less than 0.25mm, we also have another Schopper-type folding endurance tester to meet your requirements.
- If you want to test the folding resistance of flexible circuit boards, we recommend a special FPC testing machine.
| Product name | MIT Folding Endurance Tester |
| Model | AT-P8007 / AT-P8007D (button model) |
| Specimen | 15 × (150 ~ 200) mm |
| Radius of curvature of the folding surface | R 0.38 mm |
| Folding head width | 19 mm |
| Opening spacing of the folding clamps (mm) | 0 ~ 0.25, 0.25 ~ 0.5, 0.5 ~ 0.75, 0.75 ~ 1.00, 1.02-1.25mm(need to be customized) |
| Folding angle | 135° |
| Folding speed | 175 times / min |
| Adjustable Range of Tension | 4.9 ~ 14.7 N |
| Counter | 0 ~ 999,999 times |
| Operating Language | English / Chinese |
| Print and output | With a modular integrated thermal printer |
| Control method | Colorful touch screen / Digital |
| Optional | Conductive device for testing FPC |
| Power | AC 220 V, 50 Hz, 1 phase or specified |
| Machine dimension | 450 mm (L) × 300 mm (D) × 520 mm (H) |
One end of the paper test piece is mounted in the upper spring-loaded clamp so that the paper is subjected to a specified load. The load is adjustable to offer any desired longitudinal tension on the test piece from a range of at least 4.9 N to 14.7 N. The other end of the test piece is fixed on the opening of the lower folding clamp. The test piece is reciprocating folded by 135° leftward and rightward at a rate of 175 times per minute until the rupture of the test piece occurs.
- TAPPI-T511
- ASTM-D2176
- JIS-P8115
- GB/T2679-5
- ISO 5626, etc.
Features of AT-P8007 MIT Folding Endurance Tester
- The MIT tester can automatically record the number of double folds of the tested sample.
- The control system is able to make the folding head return automatically after each test. No manual operation is required.
- It possesses powerful data processing functions. Not only the number of double folds of a single sample test is recorded, but also the test data of multiple samples in the same group can be counted, such as the maximum, minimum, and average values of the folding of the same group of samples.
- It can directly print the test results on-site.
MIT folding tester includes a loadable weight spring clamping jaw, which is used to clamp one end of the sample. It can move vertically with the weight of the load, and the rotatable folding head is used for clamping the other end of the sample. A weight is applied to a spring connected to the spring clamping jaw. The folding head can be rotated 135° to the left and right sides of the paper direction, The width of the folding head is 19mm, and its radius of curvature is R0.38mm.
For paper of different thicknesses, we have a variety of opening spacings of folding heads to choose from. The opening spacings are available in 0~0.25mm, 0.25~0.50mm, 0.50~0.75mm, 0.75~1.02mm, and 1.02~1.25mm (need to be customized).
There is also a drive that allows the folding head to turn 175 times per minute at an Angle of about 135°.
The counter is used to record the number of folds or the number of times when the sample breaks.
You will also need a precision strip sample cutter with a blade width of 15mm. The blade must be sharp, and the edge of the sample cut should be smooth without burrs or nicks.
- Adjust the machine to a horizontal, and turn the rotatable folding clamp to be in a perpendicular position.
- Apply a load of normally 9.8 N to the tension rod, fix the tension rod in position, and lock it with a screw.
- Attach the test sample to the upper and lower clamps, ensuring it is in a vertical line.
- Unscrew the tension rod slowly and exert a specified load on the test sample. If the load indicator reading changes, apply a specified load once again and remount the test piece.
- Fold the test piece at a rate of (175 ± 10) times per minute and record the number of double folds until the test piece breaks.
- At least 10 samples should be tested in each test direction of the paper.
- If the specimen slides between the clamp jaw or It does not break at the fold line, the test results of this specimen are invalid.
Note: The load normally is 9.8 N. If the number of double folds is not less than 10000, the load shall be increased, and if the number of double folds is not more than 10, the load should be decreased.
- The folding endurance of paper is determined by the fiber length, strength, flexibility, and bonding force between the fibers used for papermaking. Paper made from long, strong, and firmly bonded fibers have high folding resistance.
- The paper folding endurance test is that a paper strip is folded by 135° from left to right under a certain spring tension load. Therefore, the greater the spring tension, the smaller the number of paper folding.
- The folding head of the MIT tester and the smoothness of the jaw surface arc also affect the number of folding.
- As the temperature rises, the fiber strength inside the folding area of the paper decreases, it resulting in a decrease in the folding endurance, which can be reduced to 1/3 of the original sometimes.
- When changing from low relative humidity to high relative humidity, the folding endurance increases, and reaches the maximum after a certain relative humidity, then the folding endurance decreases with the increase of humidity.
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