Paper folding tester
A paper fold endurance tester evaluates a material's resistance to repeated folding, critical for assessing durability in packaging, printing, and speciality papers. This article details key standards, technical specs, operational mechanics, and testing principles to guide users in optimizing material selection and quality control.
Applicable Standards
The tester complies with international protocols such as ISO 5626 (determination of folding endurance), TAPPI T511 (MIT fold testing), and GB/T 457-2008 (paper fold endurance). Adherence ensures reliable data for industry certifications and performance benchmarks.
Main Parameters
| Parameter | Specifications |
|---|---|
| Folding Angle | Adjustable (e.g., 135°, 180°) |
| Folding Speed | 10-200 cycles/min (programmable) |
| Count Range | 1-9999 folds or until sample failure |
| Sample Size | Customizable (e.g., 15×150 mm strips) |
| Safety Features | Emergency stop, auto-stop at sample break |
Working Principle
Powered by a motorized mechanism, the tester repeatedly folds a clamped paper strip at a set angle. Sensors detect cracks or tears, triggering automatic counting and shutdown. Results include fold count to failure and structural integrity analysis.
Test Principle
Simulating real-world folding stress, the test measures a paper's ability to withstand repetitive bending without cracking. Data supports material development, quality assurance, and compliance with industry standards.
This guide equips manufacturers to enhance product resilience, reduce waste, and ensure adherence to global quality norms through precise fold endurance testing.