Product Introduction 
The Automatic folding endurance tester operates on the MIT method principle. Under standard tension conditions, a paper or paperboard specimen is subjected to reciprocating folds until it breaks. The instrument uses an imported servo motor with direct drive for the folding mechanism, achieving precise 135±2° folding without the wear and angle deviation common in traditional gear or cam mechanisms over long-term use. The spring tension system provides adjustable tension of 4.91-14.72N, ensuring consistent test conditions. Photoelectric control technology automatically returns the folding clamp to its initial position after each test, facilitating continuous operation. The touchscreen control system with Annimet testing software V1.0 displays real-time fold counts and force curves, automatically processes statistical data, and supports printing and data communication.

Key Features 
Servo Motor Direct Drive Imported servo motor directly completes the 135±2° folding angle conversion, with no traditional mechanical transmission noise and no wear-induced angle drift.
Standard MIT Method Compliance Designed in accordance with GB/T 457-2008, with parameters such as folding angle, folding speed, and fold radius strictly meeting standard specifications.
Touchscreen Intelligent Control Equipped with a touchscreen and Annimet testing control software V1.0 for intuitive operation and real-time data display.
Fully Automatic Data Processing Tabular automatic statistics for maximum, minimum, average, and coefficient of variation, with force-displacement and force-time curve display capabilities.
Photoelectric Control Auto-Return The folding clamp automatically returns to its initial position after each test, facilitating the next operation and improving continuous testing efficiency.
Wide Range Tension Configuration Spring tension adjustable from 4.91 to 14.72N, with spring compression of at least 17mm for each 9.81N of added tension, adapting to different specimen requirements.
Multiple Fold Gap Options Fold gap distances of 0.25, 0.50, 0.75, and 1.00mm selectable to accommodate paper samples of varying thicknesses.
Data Communication and Printing Standard built-in micro-printer with optional WIFI/USB/remote transmission for data management and remote communication.

Main Technical Specifications

FAQ
1. What are the advantages of the servo motor direct drive?
The servo motor directly completes the 135±2° angle conversion on its motor shaft, eliminating the gear or cam transmission mechanisms found in traditional mechanical folding testers. This results in virtually silent operation and maintains angle precision over long-term use without mechanical wear.
2. What materials are suitable for the folding endurance tester?
It is primarily used for determining the folding endurance of paper and paperboard. For specimens of different thicknesses, different fold gap distances (0.25-1.00mm) can be selected to accommodate them.
3. How is the spring tension set and adjusted?
Spring tension is adjustable within the 4.91-14.72N range. The tension value is changed by adjusting the spring compression amount, with the spring compressing at least 17mm for each 9.81N increase in tension. Specific settings are determined based on specimen strength and relevant standard requirements.
4. How are data statistics calculated and printed?
The instrument automatically calculates statistics for multiple specimens in the same group, including maximum, minimum, average, and coefficient of variation, displayed on the LCD screen. The standard integrated micro-printer can instantly print test reports.

5. Can data be transmitted to a computer or phone?
Optional WIFI, USB, or remote transmission functions are available for wireless or wired data transfer, supporting data management functions for convenient laboratory information management.
6. How does the automatic clamp return function work?
Photoelectric control technology returns the folding clamp to its initial position automatically after each test, requiring no manual reset and facilitating quick consecutive testing for improved batch testing efficiency.

After-Sales Service 
Established in 2007 and with nearly two decades of experience, Shandong Annimet Instrument Co., Ltd. is a professional manufacturer integrating R&D, production, and sales of laboratory testing and sample preparation equipment. Quality is our foundation. We are your bridge from concept to reality. We deliver more than just instruments — we deliver confidence. This Automatic Folding Endurance Tester comes with a 12-month warranty and lifetime technical support. Our professional team offers 24/7 service response, free installation guidance, operation training, and folding endurance testing method consultation. For any inquiries, please contact our customer service team; we are dedicated to providing comprehensive pre-sales, in-sales, and after-sales support. Hotline: 400-9933-057, Email: anmt_test@126.com.