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The SCT-01 Short Span Compression Tester is a highly specialized instrument designed for measuring the compressive strength of paper and board. This tester is particularly important for the packaging, paper, and corrugated box manufacturing industries, providing vital data for quality control and product development. The Short Span Compression Tester plays a critical role in ensuring that materials meet industry standards, offering precise results that help manufacturers produce durable and reliable containers, boxes, and other packaging solutions.

Key Applications of SCT-01 Short Span Compression Tester

The SCT-01 Short Span Compression Tester is specifically engineered to determine the compressive strength of paper and board in both machine and cross directions. This versatile instrument is crucial for testing materials intended for the production of containers, boxes, and other packaging solutions. The Short Span Compression Tester excels in testing papers and boards with a grammage range of 100 g/m² to 400 g/m², ensuring that the materials used are strong enough to withstand the stresses of packaging and shipping. However, it is not designed for measuring strain at break, as its focus is on compressive failure.
This tester is an indispensable tool in industries such as packaging, food, medicine, beverages, and many others, where the strength and durability of packaging materials are critical to product safety and performance.

Advanced System Features of SCT-01 Short Span Compression Tester

The SCT-01 Short Span Compression Tester is equipped with advanced features to ensure high precision and reliability in compression testing. The system includes:

• Dual Clamps for Secure Testing: The tester features two clamps, each equipped with a stationary and a movable jaw. These clamps hold a test piece 15 mm wide with a high-friction surface to ensure a firm grip. The clamping force is consistently maintained at 2300 ± 500 N, ensuring accurate and repeatable results.

• Precise Movement and Measurement: The clamps start with a free span of 0.70 mm ± 0.05 mm and move towards each other at a controlled speed of 3 mm/min ± 1 mm/min, ensuring the compressive force is applied evenly until failure occurs. The tester measures the maximum force with extreme accuracy using a force-measuring unit.

• Advanced Control and Display: The Short Span Compression Tester features a PLC (Programmable Logic Controller) for precise control and an HMI (Human-Machine Interface) touch screen for ease of operation. The user can monitor the entire testing process and view real-time data on the maximum compressive force, displayed in various units such as newtons (N), kilogram-force (kgf), and pound-force (lbf).

• Calibration and Load Cell Verification: The tester comes equipped with a device for calibrating the load cell, ensuring that all readings are accurate. The clamping force exerted by the jaws is displayed in newtons, making it easy to verify that the correct pressure is applied during testing.

Technical Specifications of SCT-01 Short Span Compression Tester

The SCT-01 Short Span Compression Tester also includes several safety features, such as an emergency stop button and over-range protection, ensuring that the testing process is safe for both the operator and the equipment.

Test Principle of Short Span Compression Tester

The Short Span Compression Tester operates by clamping a 15 mm wide test piece between two clamps that are spaced 0.70 mm apart. The clamps move towards each other at a controlled speed until compressive failure occurs. The maximum force applied before the material fails is measured, and the compressive strength is calculated. This method provides highly accurate data on the material's strength, which is crucial for packaging applications.

Testing Procedure of SCT-01 Short Span Compression Tester

1. Sample Preparation: Prepare test pieces of paper or board with dimensions of 15 mm × 75 mm.
2. Clamping the Sample: Place the test piece between the stationary and movable clamps, ensuring it is securely held.
3. Testing: Set the jaws in motion, applying a consistent force until compressive failure is detected. The Short Span Compression Tester measures the maximum compressive force applied during the test.
4. Multiple Tests: Conduct at least 20 tests in each required direction (machine and/or cross direction) to ensure the accuracy of results.
5. Result Analysis: Analyze the data to determine the material's compressive strength, ensuring that it meets the necessary industry standards for packaging and container production.

Compliance with International Standards

The SCT-01 Short Span Compression Tester is designed to comply with international testing standards, ensuring that it delivers reliable and repeatable results. The key standards that the SCT-01 adheres to include:

• ISO 9895: International standard for determining the compressive strength of paper and board.
• GB/T 2679.10: Chinese national standard for short-span compression testing of paper and board.

Optional Features and Customization

The SCT-01 Short Span Compression Tester can be customized with additional features to meet specific testing needs. Optional configurations include:

• Non-Standard Jaws: For testing materials that require specific clamp dimensions.
• RS 232 Port and COM Line: For data transfer and integration with computer systems.
• Specialized Software: For advanced data analysis and reporting.
• Air Compressor: To provide the necessary pneumatic clamping force.

Core Benefits of Using SCT-01 Short Span Compression Tester

• Highly Accurate Testing: Ensures precise measurements of compressive strength, essential for the quality control of packaging materials.
• Versatile Applications: Suitable for testing a wide range of paper and board types, making it ideal for industries such as packaging, food, pharmaceuticals, and beverages.
• Compliance with Standards: Meets international testing standards, ensuring that test results are reliable and accepted worldwide.
• Customizable Options: Can be tailored to meet specific testing needs, providing flexibility for various industrial applications.

Frequently Asked Questions (FAQ)

1. What is the compressive strength measured by the SCT-01? The compressive strength is the maximum force per unit width that a test piece can withstand before failure. It is expressed in kilonewtons per meter (kN/m).
2. What is the importance of testing the compressive strength of paper and board? Compressive strength is a critical factor in determining the durability and structural integrity of packaging materials. It helps manufacturers ensure that their products can withstand the stresses of shipping and handling.
3. How does the SCT-01 differ from other compression testers? The SCT-01 Short Span Compression Tester is specifically designed for short-span testing, making it ideal for measuring compressive strength in small samples of paper and board. Its high precision and compliance with international standards make it stand out from other testers.
4. Can the SCT-01 be used for materials other than paper and board? While the SCT-01 is primarily designed for paper and board, it can be adapted for testing other materials by using custom jaws and settings.
5. How often should the SCT-01 be calibrated? Regular calibration is essential for maintaining the accuracy of the tester. It is recommended to calibrate the SCT-01 at least once a year, or more frequently if it is used intensively.

Conclusion

The SCT-01 Short Span Compression Tester is an essential tool for any industry involved in packaging, paper, or board manufacturing. Its precise measurements, advanced features, and compliance with international standards make it a reliable choice for testing the compressive strength of materials. Whether you are testing materials for containers, boxes, or other packaging solutions, the Short Span Compression Tester ensures that your products meet the highest quality standards.

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