Product Introduction
The paperboard bending stiffness tester is a special instrument for determining the stiffness of paper and paperboard. It is especially suitable for measuring the stiffness of low‑basis‑weight paper and paperboard with thickness less than 1 mm. It is used to measure the crease force (spring‑back force after 90° bending) of various paperboards and paper boxes (such as cigarette boxes).
Technical Parameters
Crease Force:
- Precision: 0.1 FS
- Accuracy: ±0.5%
- Crease stiffness bending angle: 90°
- Paperboard stiffness bending angle: 15°
- Test time: 15 s
- Sample size: (36×38) mm
- Load arm length: 10 mm
Paperboard Stiffness:
- Resolution: 1 mN
- Indication error: ±0.5 mN for values below 50 mN; ±1% for other values
- Indication variability: ≤1%
- Bending length: (50±0.1) mm, (25±0.1) mm, (10±0.1) mm
- Bending test speed: (200±10) °/min; under 15° bending condition, bending time shall be no less than 3 s and no more than 20 s
- Nominal bending length: 50 mm
- Bending angle: (0~90)° arbitrarily settable; commonly used (15±0.3)°, (7.5±0.3)°
- Clamp width: (38±0.1) mm
- Sample size: (70×38) mm
- Load arm length: 50 mm
- Service life of Chinese‑English LCD control screen: approx. 50,000 hours
- Power supply: AC220V, 50Hz
- Overall dimension (L×W×H): (331×345×280) mm
- Net weight: 14 kg
