Mullen Burst Tester For Paper Food Paper-Plastic Composite Packaging Bursting Strength Tester

Introduction to the Mullen Burst Tester For Paper

The Mullen Burst Tester For Paper, model ZNP-01, is an advanced instrument designed to measure the bursting strength of paper under increasing hydraulic pressure. This essential tool is used extensively in various industries, including packaging, food, medicine, and beverages, to evaluate the durability and structural integrity of paper products.
The ZNP-01 Paper Bursting Tester is ideal for papers with bursting strengths ranging from 70 kPa to 1400 kPa. It is crucial for assessing materials that must endure external pressures during transit and handling. The tester is not intended for use with components of combined boards, such as fluting medium or linerboard, for which ISO 27591 is more applicable.

Key Features of the Mullen Burst Tester For Paper

1. Human-Machine Interface: The Mullen Burst Tester For Paper features a user-friendly 5-inch touchscreen for intuitive operation and control.
2. Testing Control: The device includes delayed pressurization and pressure release delay controls to enhance testing precision.
3. Clamping Force: Adjustable clamping force from 100 kPa to 1200 kPa with a stabilizing function ensures consistent clamping pressure.
4. Oil Cup System: Equipped with a robust high-pressure oil circuit sealing system, including dual-seal knobs and a 25mm high-pressure stainless steel oil pipe.
5. Circuit Board Chip Protection: The tester incorporates a water vapor filtration device to maintain circuit stability.
6. Calibration System: Features a built-in calibration system with manual pressure and pressure release control for accuracy.
7. Testing Head Material: Constructed from durable 304 stainless steel for enhanced reliability.
8. Safety Features: Includes a protective cover and a power supply anti-interference module for user safety.
9. Language Switching: Supports both Chinese and English languages for versatility.
10. Unit Conversion: Allows conversion between Kg/cm², kPa, and lbf/in².
11. Print Output: Equipped with a modular integrated thermal printer for easy result documentation.

Test Principle

The Mullen Burst Tester For Paper operates by placing a test piece over a circular elastic diaphragm, which is then clamped rigidly at the periphery. Hydraulic fluid is pumped at a constant rate, causing the diaphragm to bulge until the test piece ruptures. The maximum applied hydraulic pressure before rupture determines the bursting strength of the paper.

Main Parameters

• Measurement Range: 70~1600 kPa (paper)
• Force Resolution: 1/100000
• Data Sampling Frequency: 400 times/second
• Force Accuracy: ±0.1% (20~100% Full Scale)
• Overall Accuracy: ≤±0.5%
• Resolution: 0.01 kPa
• Deformation Error: ≤1mm
• Concentricity of Plates: ≤0.25mm
• Diaphragm Resistance: (9±0.2) mm/(30±5) kPa
• Oil Feeding Speed: 95±5 ml/min (paper)
• Platen Diameter: Upper: 30.5±0.1 mm; Lower: 33.1±0.1 mm (paper)
• Air Source: 0.6~0.7 MPa
• Display: 5-inch Touch Screen
• Clamping Force: Adjustable from 100 kPa to 1200 kPa
• Oil Cup System: High-Strength, High-Pressure Oil Circuit Sealing System
• Circuit Board Protection: Water vapor filtration device
• Calibration System: Built-in with manual control
• Material of Testing Head: 304 stainless steel
• Safety Devices: Protective cover and anti-interference module
• Language Switching: Chinese and English
• Unit Conversion: Kg/cm², kPa, lbf/in²
• Print Output: Modular Integrated Thermal Printer

Paper Bursting Test Standards

The Mullen Burst Tester For Paper complies with industry standards including GB/T 454, QB/T 1057, ISO 2758, TAPPI T 403, JIS P 8112, BS 3137, and ASTM D774, ensuring its reliability and accuracy in various testing environments.

Configuration

• Standard Configuration: Includes ZNP-01 Bursting Tester, wrench, silicone oil, rubber diaphragm, foil, paper roll, manual, calibration certificate, and power cord.
• Optional Configuration: Additional diaphragm, foil, COM Line, software, and air compressor.

FAQs

1. What is Paper and Paperboard Bursting Strength? Bursting strength measures the ability of paper and paperboard to withstand rupture under external forces. It indicates the maximum force the material can resist per unit area before breaking, crucial for ensuring durability and quality in packaging.
2. Why is the bursting test referred to as the Mullen Method? Named after Emory H. Mullen, the Mullen Method was developed in 1926 and standardized the process for measuring the bursting strength of paper and paperboard. It is widely used for assessing material strength in packaging.
3. How does the Mullen Burst Tester For Paper improve quality control? The Mullen Burst Tester For Paper allows manufacturers to regularly check the bursting strength of paper materials, ensuring they meet quality standards and perform reliably under pressure during transit and handling.
4. Can the Mullen Burst Tester For Paper be used for testing other materials? The Mullen Burst Tester For Paper is specifically designed for paper and paperboard. For combined board components or other materials, different methods and instruments like ISO 27591 are recommended.
5. What is the significance of the calibration system in the Mullen Burst Tester For Paper? The built-in calibration system ensures accurate and consistent results by allowing manual adjustment and verification of the tester's performance, which is essential for maintaining reliable testing standards.