Product Introduction 
The Paper Plate stiffness tester operates on a vertical loading measurement principle. One edge of the paper plate under test is clamped and fixed, while the other end is supported by an adjustable-height point to keep the plate body horizontal. During testing, a pressing head moves vertically downward at a specified speed, applying a loading force to the free end of the paper plate. A high-precision load cell captures real-time force data throughout the pressing process, and the system automatically identifies and records the maximum force value as the stiffness test result. The instrument is equipped with a touchscreen control system for setting parameters such as pressing speed and distance, with automated data acquisition and display. Displacement accuracy of 0.1 mm ensures precise control of the pressing distance, while force accuracy of 0.5% F.S. guarantees measurement data reliability.

Key Features 
Latest National Standard Compliance Designed in strict accordance with GB/T 27591-2025 (Paper tableware) requirements, delivering standardized and comparable test data suitable for type and factory inspection.
Professional Overall Stiffness Measurement Specifically designed for determining the overall bending stiffness of paper plates, bowls, dishes, and other paper tableware, simulating real-world stress conditions during use.
Wide Range, Large Size Adaptability Maximum measuring diameter of 300 mm and maximum support distance of 100 mm cover most paper plate sizes on the market.
High-Precision Force Measurement Force measuring range of 0-20 N with an accuracy of 0.5% F.S., precisely capturing the maximum stiffness force value during the loading process.
Precise Displacement Control Maximum descent distance of 40 mm with displacement accuracy of 0.1 mm ensures test condition consistency and result repeatability.
Bilingual Interface System supports both Simplified Chinese and English interfaces to meet the operational needs of domestic and international laboratories.
Easy Operation, Robust Structure Overall dimensions 500×270×580 mm, net weight approximately 27 kg; desktop design with a sturdy structure, intuitive operation, and easy maintenance.
Professional Industry Application An essential professional testing instrument for paper tableware manufacturers, quality inspection centers, and packaging production company laboratories.

Main Technical Specifications

FAQ 
1. What products is the paper plate stiffness tester suitable for?
It is suitable for determining the overall stiffness of various paper tableware products including paper plates, paper bowls, paper dishes, and molded pulp tableware, as long as the product dimensions fall within the instrument's maximum measuring diameter of 300 mm.

2. Why should the plate be adjusted to a horizontal position before testing?
Adjusting the plate to a horizontal position eliminates the influence of gravity on test results, ensuring that the applied vertical force is fully used to measure the bending resistance of the plate, making the test results truly reflect the stiffness characteristics of the material.

3. How is the maximum force value determined and recorded?
The instrument is equipped with a high-precision load cell and automatic data acquisition system that records the force variation curve in real time during the pressing process. The system automatically identifies and locks the maximum force value, displaying it directly on the touchscreen without the need for manual reading.

4. Is the support distance adjustable?
Yes, the support distance can be adjusted within the range of 0-100 mm according to the size of the paper plate under test and testing requirements to accommodate stiffness testing of products with different specifications.

5. Does the instrument require regular calibration?
Periodic force calibration using standard weights is recommended to ensure force accuracy remains within 0.5% F.S. Displacement accuracy can be verified using standard gauge blocks. We provide calibration guidance and after-sales support.

6. Can test results be printed or exported?
The instrument is equipped with a touchscreen control system for real-time display and storage of test results. For detailed information on printing and data export functions, please consult our technical team.

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 Paper Plate Stiffness 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 stiffness 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.