Digital Bursting Strength Tester: Working Principle and Benefits

In the packaging and quality control industries, ensuring material durability is essential. The bursting strength of paper, cardboard, fabric, and other sheet materials dictates their performance under pressure. The Digital Bursting Strength Tester is a cutting-edge device specifically designed for precise, repeatable measurement of this critical property. This blog discusses what a digital bursting strength tester is, how it functions, and the benefits it provides.

What is a Digital Bursting Strength Tester 

A Digital Bursting Strength Tester is a device used to measure the strength of materials like paper, fabric, or leather by determining the pressure required to rupture them, with results displayed digitally for accuracy and ease. It functions by gradually applying pressure (with liquid) to the material until it bursts. The device then displays the precise pressure it took to cause that on a digital display.

 

This type of test is normally employed by industries such as paper, packaging, and textiles to ensure materials are robust and will not tear or break easily when in use. 

How Does a Bursting Strength Test Work? 

A bursting strength test determines how much pressure a material will resist before it bursts. It's conducted by subjecting a sample, usually between circular clamps, to hydraulic or pneumatic pressure until it bursts. The pressure when the material bursts is the bursting strength. Here are the steps explained of how a bursting strength test works.

Preparation of Sample

• A flat portion of the material (like paper, cloth, cardboard, etc.) is trimmed to a uniform size.

• It should be free of dirt, creases, and folds to yield accurate results.
• The sample needs to be conditioned (if necessary) under controlled temperature and humidity to provide repeatable testing results, particularly for sensitive materials to environmental changes.

Clamping the Sample

• The sample is held between two round clamps, a top clamp, and a bottom clamp.

• These clamps grip the sample tightly so that it doesn't slip during testing.

• A rubber diaphragm is positioned under the sample within the lower clamp.

Building Hydraulic Pressure 

• A hydraulic setup starts to pump fluid under the rubber diaphragm.

• As the fluid becomes full, the diaphragm begins to swell upward, exerting even pressure on the bottom of the sample.
• Pressure increases slowly to evenly apply simulated real-world stress materials could be subjected to in handling, piling, or shipping.

Building Pressure Slowly

• The machine slowly builds pressure, forcing the sample material outward through the top clamp.

• This simulates the type of stress or pressure the material is likely to experience in actual application (such as during shipping, folding, or packaging).
• The carefully controlled rate of pressure application allows for precise identification of the material's actual bursting point, without the shock that might be introduced by sudden application.

Material Bursts

• Eventually, the material becomes unable to handle the pressure and bursts (tears or breaks open).

• This is the bursting point, and it will differ based on the strength and quality of the material.
• The break usually occurs at the weakest point in the sample, exposing potential deficiencies or variations in material composition or processing.

Recording the Bursting Strength

• The maximum pressure is recorded on the machine immediately at the time of bursting.

• This reading is then indicated digitally, most often in kg/cm² or psi.

• Some high-tech machines can either store or print out the reading for record purposes.

Pressure Release and Reset

• After bursting, the hydraulic system releases the pressure automatically.

• Clamps open so that the ruptured sample can be released, and the tester is prepared for the next test.
• The system returns to its original position to provide equal test conditions to the next sample and minimize manual operation for operators.

Working Principle of Digital Bursting Strength Tester

Digital bursting strength tester works on the principle of hydraulic pressure, where pressure is supplied through a rubber diaphragm to the sample of the material until it bursts. The peak pressure at which the material bursts is recorded and displayed digitally as its bursting strength.

 

The tester relies on sensors and a microprocessor system for maintaining high accuracy, data consistency, and reproducibility. The output is used to measure the mechanical strength and endurance of different sheet materials such as paper, cloth, and cardboard.

Benefits of Using a Digital Bursting Strength Tester

Using a digital bursting strength tester is essential for manufacturers aiming to maintain high product quality and durability. This modern testing equipment offers accurate, repeatable results and simplifies quality assurance. Below are nine detailed benefits that explain why investing in this tester can significantly enhance your testing processes:

1. High Accuracy and Precision

Digital bursting strength testers utilize microprocessor-based systems and pressure sensors that deliver very precise readings. Precision of this degree is very important when measuring the mechanical strength of materials so that test values accurately represent the material's actual resistance to stress, free from human reading errors.

1. Easy-to-Read Digital Display

The equipment has a digital display that easily indicates the bursting strength in units such as kg/cm² or psi. This minimizes human intervention in the reading of measurements and enables fast decision-making during quality inspection, particularly in high-speed production conditions.

1. Repeatable and Consistent Results

With automation and electronic controls, every test is performed under identical conditions. This eliminates variability caused by operator technique and the results are repeatable, which is critical in ensuring material standards are met over various batches or suppliers.

1. Efficient Testing Process

Digital testers automate pressure application, measurement, and release, vastly accelerating the test cycle. This enables quality control teams to perform more tests within a shorter time frame without reducing accuracy, increasing overall manufacturing and test lab productivity.

1. Multi-Material Applications

The tester can test an extensive variety of materials, such as paper, corrugated boards, fabrics, and leather. It is this versatility that makes it a worthwhile asset for a multitude of industries such as packaging, printing, and fabric production, minimizing the necessity of having multiple testing devices.

1. Guarantees Material Quality and Reliability

By ensuring weak or faulty materials are detected before production or shipping, the tester prevents packaging or fabric failure. Not only does this guard against product integrity, but it also reduces complaints and returns as well as increases customer satisfaction.

1. Compliance with International Standards

Most computer-based bursting strength testers, such as Testronix, are made to meet ISO, ASTM, and other international standards. This guarantees your products pass necessary quality standards, supporting export objectives and lessening the risk of regulatory issues.

1. Low Maintenance and Easy-to-Use Design

Today's digital testers are easy to use and maintenance-free. They have user-friendly interfaces, auto-calibration, and rugged builds, which translate to less downtime, fewer training requirements, and more streamlined operations for your team.

1. Data Storage and Printing Capabilities

Additional advanced models provide USB or printer connectivity to save or print test results. This enhances documentation, traceability, and quality management, all of which are critical to auditing, certification processes, and long-term quality management systems.

Conclusion 

For businesses that rely on packaging integrity, textile toughness, or material consistency, the Testronix Digital Bursting Strength Tester is a must-have. With accurate readings, durable build, and customer-friendly design, it facilitates quality control and minimizes product failure risk. A quality bursting strength tester not only enhances product uniformity but also enhances brand credibility in competitive markets.

Presto Instruments is a leading Digital Bursting Strength Tester manufacturer in Sri Lanka, committed to global quality standards. Our equipment is designed to improve product reliability, reduce defects, and ensure consistent performance. Trusted by industries worldwide, we offer reliable and customized solutions to meet your testing needs. Contact us today.