Paper Folding Endurance Tester
The Paper Folding Endurance Tester is designed to evaluate the folding fatigue strength of paper, paperboard, and other sheet materials with a thickness of less than 1 mm. Utilizing advanced photoelectric control technology, the folding clamps automatically return to their initial position after each test, enabling efficient successive testing. The instrument provides comprehensive data processing, capable of calculating single-sample double-fold counts, logarithmic conversions, and statistical analysis for multiple samples, including maximum, minimum, and average values. Results can be displayed digitally and printed using an integrated micro printer.
Application
The tester is widely used in:
Paper and paperboard quality control and R&D
Printing and packaging industry for material endurance evaluation
Manufacturing quality assurance of sheet materials
Testing thin-film materials, labels, and laminates for folding durability
Standards
The instrument complies with the following standards:
(1) GB/T 2679.5 – Determination of Folding Endurance of Paper and Paperboard
(2) ISO 5626 – Paper and Board – Determination of Folding Endurance
(3) TAPPI T511 – Folding Endurance of Paper
Parameters
| Parameter | Specification |
|---|---|
| Sample Thickness | ≤1 mm (customizable for thicker samples) |
| Counting Range | 1–99,999 folds (expandable) |
| Folding Angle | 135° ±2°, servo stepper motor controlled |
| Folding Speed | 175 ±2 folds/min, servo stepper driver controlled |
| Folding Head Width | 19 ±1 mm |
| Fold Radius | 0.38 ±0.02 mm |
| Spring Tension | 4.91–14.72 N |
| Clamp Distance | 0.25, 0.50, 0.75, 1.00 mm selectable (304 stainless steel) |
| Calibration Weights | Class I weights: 500 g and 1 kg |
| Test Results | Folding endurance (fold count), folding time |
| Software Functions | Max, min, average calculation; storage of 9,999 historical records |
| Printing | Integrated micro thermal printer |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Operating Environment | Temperature: 0–40℃; Relative humidity: ≤85% |
| Dimensions | 340 × 260 × 450 mm (L×W×H) |
| Gross Weight | 30 kg |
| Communication Interface | USB for data download and history retrieval |
| Display | 5-inch high-resolution touch screen |
Features
Automatic clamp return after each test for efficient operation
Photoelectric control for precise and repeatable folding tests
Multi-sample statistical analysis including max, min, and average values
Micro thermal printer for immediate test result output
USB interface for data storage and retrieval
Customizable folding clamps for various sample thicknesses
High-precision servo stepper motor ensures consistent folding speed and angle
Accessories
(1) Micro thermal printer (built-in)
(2) Calibration weights (500 g and 1 kg)
(3) Folding clamps (adjustable, 304 stainless steel)
(4) USB data cable
(5) Operation manual
Test Procedures
Prepare 5 sample pieces of 55 ±1 mm diameter (preconditioned if required).
Mount the sample into the folding clamp.
Set the folding angle, speed, and count on the touchscreen interface.
Start the test; the clamps automatically fold the sample.
Monitor the test and allow automatic completion.
View or save results on the touch screen or print via the built-in printer.
Repeat for multiple samples; the software calculates statistical data for the batch.
Download historical data through the USB interface if required.
Maintenance Information
Regularly clean folding clamps and ensure no debris interferes with folding.
Calibrate using standard weights periodically to maintain accuracy.
Inspect and maintain servo stepper motors for consistent performance.
Keep the instrument in a controlled environment (0–40℃, ≤85% humidity).
Periodically check the touchscreen and USB interface for proper operation.
FAQ
What is this product?
The Paper Folding Endurance Tester is a precision instrument to measure the folding fatigue resistance of paper, paperboard, and thin sheet materials.
What is it used for?
It evaluates material durability under repeated folding and provides statistical analysis of test results.
Why is it important?
Folding endurance is critical for quality control in paper manufacturing, printing, packaging, and other industries using sheet materials.
Which industries is it suitable for?
Paper and paperboard manufacturing, printing, packaging, labeling, laminates, and R&D laboratories.
What types are available?
Customizable for various sample thicknesses, fold angles, and fold speeds; compatible with USB data output and integrated printing.
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