Are you looking for the perfect testing instrument to determine the bursting strength of materials? If yes, then we suggest you go with Presto bursting strength tester-digital. It is the perfect device for anyone who wants to find the bursting strength of Paper/Paperboard. It’s packed with features that make everyday life easier and more productive. 

A bursting strength tester is the perfect device for manufacturers in the packaging industry, to easily determine the bursting strength of corrugated boxes, cardboard boxes, and other related products. It consists of an electric motor with a speed regulator and gearbox fitted on a heavy cast iron base stand having leveling screws at its four corners.

The test specimens are mounted in jaws which are adjustable vertically by means of screw spindle provided with a micrometer head for setting up desired value on the scale plate attached. The digital model of this testing instrument has been equipped with various advanced features that make it easy to use. 

Bursting strength tester is the most widely used machine in industries where raw materials like paper, cardboard, cloth, rexine, leather, foil, etc. are used. It works on the very simple principle of applying pressure on the specimen until it ruptures. This pressure is not applied directly to the sample. Instead, it will be applied through a rubber diaphragm. When you easily calculate the bursting strength of materials, then you will be able to improve the quality of your material, by determining its bursting properties. 

This bursting strength machine has been made up of high-quality parts and has very low maintenance. It comes with some low-cost consumables like diaphragm and glycerin which can be replaced without any hassle in case of wear and tear. The life of the diaphragm depends on the number of tests performed. To perform the test, the sample is clamped in the annular clamp. It is always advised to clamp the sample with nominal pressure. If the clamped sample is loose, it will tend to slip after the application of pressure. 

If it is too tight, more than required pressure needs to be applied. Thus, you should use nominal pressure to easily apply the pressure. The burst testing machine is very simple to operate and it comes with a calibration certificate as well. With its bright digital display, you will be able to view the testing results accurately.

The main purpose of the Presto bursting strength tester is that it provides you with accurate information about the burst strength test of materials. If you test this property of material, then there will be fewer chances of box failure during the storage of products. The equipment is provided with a cam mechanism that is motor-driven which is used for increasing the fluid displacement on the lower side of the rubber diaphragm at a specified rate. There is a mechanism provided with the equipment that automatically lowers the pressure down and stops the motor automatically when the test cycle is completed. It has a rugged design to provide trouble-free performance for a long time.

The main unit of bursting strength tester-digital consists of various essential components like an operating wheel, lead screw, upper clamp, specimen placement area, lower clamp, load indicator, push-button for burst, and main switch. The load indicator control panel will show you the burst value of products, and provide you with buttons like Tare, reset, limit, etc. It comes with a maximum range of bursting (i.e. 40 kg/cm2). To operate this testing instrument, we have mentioned several steps below: you can know more about the bursting strength tester principle.

• When you start with the machine operating process, then you need to plug the machine into a 3 pin-5 amp, power supply socket.

• Once the machine gets started, then the load indicator will show some values due to previous test values. But you can reset these values by pressing the TARE button and then the RESET button. When you press these buttons, then the load value will show zero reading.

• After that, you can prepare the specimen like a cardboard box, corrugated fiber sheet, or any other similar material. The dimensions of the cardboard specimen should be 100 x 100mm. A test specimen below these dimensions will not give accurate results. While preparing the specimen, make sure that there are no folds in the specimen.

• To place the sample accurately, you need to move the upper clamp of the specimen upwards by rotating the operating wheel in the anti-clockwise direction. Place the test specimen so that it completely covers the Lower clamp.

• Now rotate the operating wheel in a clockwise direction to bring the upper clamp down to hold the test specimen. Tighten the operating wheel to make sure that the test specimen is firmly held and there will be no slippage.

• Once you perform all the steps above, then you can commence the test. ‘

In this way, you can easily perform the bursting strength test of the specimen.

Digital Bursting Strength Testing with Presto

Presto's bursting strength tester digital is a state-of-the-art instrument that combines precision, convenience, and efficiency. Built with the latest digital advancements, this tester offers several key features that elevate the testing process and provide accurate measurements.

Features of Bursting Strength Tester – Digital

The quality of the corrugated boxes will be determined by testing their burst strength. If the package will burst in between, then the materials stored inside it will get damaged. Thus, to ensure that there will be no rejections take place, you should make use of a bursting strength tester. Here we have listed some of the amazing advantages of a digital bursting strength tester.

• The testing instrument is very easy to operate.

• It indicates digital readings.

• It provides consistent, repeatable, and reliable data.

• It has a TARE facility.

• The lab equipment has a Digital LED display.

• It has a peak hold facility for maintaining the highest value in the memory.

• It has a Calibration facility available.

• The laboratory instrument also has feather touch controls.

• Single Push-Button Operation

• Microprocessor-based display for accurate test results

• Memory to hold up to 9 test reading

• Highly accurate test results under multidirectional Force

• Strong Gripping clamps

• Grooved structure of Test Specimen Holder to avoid slippage and intact holding of the specimen under test

• No slippage in case specimen is tightened uniformly using operating wheel

• It has been made with standards like ASTM 3786 and ISO 2758/ 3303/ 3689

Technical specifications of Bursting Strength Tester 

• Equipment Bursting Capacity: 40 Kg/cm²

• Least Count: 0.1 Kg/cm2

• Repeatability: ± 1 % within 10% to 9% of extra range as per IS:1828

• Opening in upper clamp: 31.5 mm diameter

• Opening in lower clamp: 30.5 mm diameter

• Rate of fluid displacement: 95 cc/min. (± 5 cc/min)

• Test fluid: Glycerin about 98% purified (LAB GRADE)

• Glycerin Capacity: 200 ml.

• Geared Motor: 1/4HP, Single Phase, 120 RPM

• Pressure Sensor: Pressure Transducer Sensor, output – 4 -20 mA, Range – 40 Bar)

• Power Supply: 220 Volt AC, 50Hz, Single Phase

• Earthing Required: Proper Earthing Required with respect to neutral and earth voltage with value not more than 0-4 Volts AC.

Conclusion of Bursting Strength Tester

Bursting Strength Testers are widely used in the packaging industry to ensure the durability and reliability of materials such as corrugated boxes, paperboards, and flexible packaging. By accurately determining the bursting strength, manufacturers can assess the suitability of packaging for containing and protecting goods during transportation and storage. Presto is the best instrument provider in India. You can get the best bursting strength tester price.