GB/T 457-2008 Schopper-type Folding Endurance Tester for Paper and Board

GB/T457-2008Schopper MethodPaper and Paperboard Folding Endurance Tester

Model: NZD-A

Purpose: This instrument is suitable for determining the folding endurance of paper with a tensile strength greater than 1.33 kN/m and a thickness less than 0.25 mm. The structural parameters and technical performance of the instrument comply with the requirements of GB/T 457 "Determination of Folding Endurance of Paper and Paperboard" and other relevant standards.

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: it can statistically analyze experimental data from multiple samples in the same group, including maximum value, minimum value, average value, and coefficient of variation. These data are stored in the microcomputer and can be displayed on the LCD screen. Additionally, the instrument is equipped with a printing function.

Technical Parameters

1. Maximum measurement thickness: 0.25 mm

2. Folding blade thickness: 0.5 ± 0.05 mm

3. Sample load: Initial tension 7.55 ± 0.10 N     Maximum tension 9.81 ± 0.10 N

4. Reciprocating folding speed: 110 ± 10 times/min

5. Folding roller diameter: 6 mm

6. Distance between folding blade and folding roller: 0.30 mm

7. Distance between folding rollers: 0.5 mm

8. Distance between clamps in the same group: 90 ± 0.5 mm

9. Counter range: 0-9999 times

10. Power supply: 220 V ± 10%  50 Hz

11. Power consumption: 80 W

12. Weight: 23 kg

13. Dimensions (mm): 540 × 550 × 300

Standard Configuration: Main unit + Mini printer

Compliance Standard: GB/T 457-2008 "Determination of Folding Endurance of Paper and Paperboard"