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

GB/T457-2008MIT-Type 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 and can automatically count the double folds of the test specimen.

Features

The instrument uses photoelectric control technology to automatically return the folding clamp to its original position after each test, facilitating the next operation. It has powerful data processing capabilities: not only can it convert the double folds of a single specimen and the corresponding logarithmic value, but it can also statistically analyze experimental data from multiple specimens in the same group, including 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 has 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, for every 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.Dimensions: 360*300*325mm;

9.Weight: 37.5kg;

10.Power supply: 220V 50Hz;

11.Power: 90W;

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

Standard Configuration: Main unit + weights

Compliance Standard: GB/T457-2008 "Determination of Folding Endurance of Paper and Board"