GB/T 457-2008 MIT Folding Endurance Tester for Paper

GB/T457-2008MIT-style Paper Folding Endurance Tester

Model:NZD-B

Purpose: This instrument is designed according to the Chinese national standard GB/T457 "Determination of folding endurance of paper and board". It features an integrated optical-mechanical-electrical structure capable of automatically counting the double-fold次数 of test specimens.

Product Features

The instrument employs photoelectric control technology to automatically return the folding clamp to its original position after each test, facilitating subsequent operations. It possesses powerful data processing capabilities: not only can it convert the double-fold次数 and corresponding logarithmic values of a single specimen, but it can also statistically analyze experimental data from multiple specimens within the same group, calculating the maximum, minimum, average values, and coefficient of variation. These data are stored in the microcomputer and can be displayed via digital tubes. Additionally, the instrument includes printing functionality.

Technical Parameters

1.Measuring range: ≤1 mm;

2.Counting range: 0～9999 times;

3.Folding angle: 135±2°;

4.Folding speed: 175±10 times/min;

5.Folding head width: 19±1mm, folding edge radius: 0.38±0.02mm;

6.Spring tension: 4.91～14.72N, with each additional 9.81N of tension, the spring compresses at least 17mm;

7.Distance of the folding gap: 0.25, 0.50, 0.75, 1.00mm;

8.Overall dimensions: 360*300*325mm;

9.Weight: 37.5kg;

10.Power supply: 220V 50Hz;

11.Power consumption: 90W;

12.Operating conditions: Room temperature 10℃-30℃, stable workbench with a flat, vibration-free surface.

Standard Configuration: Main unit + weights

Compliance Standard: GB/T457-2008 "Determination of folding endurance of paper and board"