Detailed explanation of the operation of the MIT paper folding tester

PF-01 MIT folding resistance tester is a new type of instrument
researched and developed by our company according to the national standard GB/T 2679.
5-1995 (determination of folding resistance of paper and cardboard).

The instrument has the parameters included in the standard testing, conversion, adjustment, display, memory, printing, with data processing function, can directly obtain the statistical results
of each data.

The instrument is compact, small in size, light in weight, full in functions, benchtop placement, easy to operate, stable in performance, suitable for the determination
of folding resistance of various papers, cardboard and materials.

The instrument can display the number of double folds in real time, after the experiment is completed, record the number of times when breaking, press the "number of times/logarithmic" key to display the corresponding log value, press the "Statistics" key, display the standard deviation and coefficient of
variation.

Press the "Print" key to print out the statistical report
.

Equipment picture: PF-01MIT bending tester equipment placement: 1, the instrument should be placed on the surface of a solid and stable water platform
.

2.
Insert the power cord of the instrument into the power outlet in the lower left rear of the instrument to power
the instrument.

Operation steps: First, boot 1.
Turn on the power, press the power switch behind the instrument, 2.
After the power is turned on, the LCD screen displays the initial data 3.
After a few seconds, the folding chuck will automatically reset and return to the center
.

Second, set the parameters 1, tension selection, press the "tension" button, select the force value you want, press the "▲""▼" key to select, press the "Test" key to confirm
.

2.
According to the corresponding force value, the weight is selected, the weight is 20N, the weight is 9.
8N, the weight is 4.
9N, and the superposition of the two small weights is 14.
7N
.

The scale of the fourth gear is shown on the right
.

Third, clip the specimen First, use a standard paper cutting knife to cut the specimen to be tested and set aside (width 30mm, length about 250mm).


Then according to the tension required for the test, the weight is placed on the tension holder, so that the tension pointer on the tension bar indicates the data (4.
9N is a small weight, 9.
8N is a large weight, 14.
7N is two small weights superimposed, and then, tighten the tension lever to tighten the knob, first clamp the specimen to the tension bar chuck, fix the tension chuck (Note: the specimen must be attached to the iron sheet inside the chuck, vertically downward), and then fix the folding chuck (note that the folding head should be reset to the center), Clamping specimens requires vertical parallelism, tensioning, and no twisting
.

Once the paper is clipped, loosen the tension lever tightening knob
.

Then take the weights off and put them away
.

Fourth, determine the specimen clip good sample, take away the weight, press the "test" button, folding chuck automatically folded, until broken
.

When folded, the window displays the number of folds in real time, and after breaking, the last number of folds is displayed
.

1.
Press the "logarithmic" key to display the logarithm
.

(That is, the number of double folds with 10 as the bottom is the log value) 2, press the "direction" key, you can set
the direction of the specimen.

Fifth, clear if the fold does not meet the requirements, you can press the "Delete" key, this time the data is not recorded in the original statistics data, the test data is invalid, enter "00" can delete all data
.

6.
After printing and stretching a group of specimens, if you need to print the parameters of the group of specimens, you can print out the set value after pressing the "Print" key; Spring tension; Measured values; The mean, maximum, minimum, standard deviation and coefficient
of variation of the number of specimens and parameters.

Seven, shut down and press the power switch, all displays are off, and the set data is saved
.