If you make corrugated boxes, buy corrugated boxes, or run a paper mill, this machine tells you the single most important number: how much pressure can the box or paper sheet take before it bursts?
The Finetech Engineering burst strength tester manufacturer India product – also called a Mullen burst tester manufacturer India product – answers this question in under two minutes. You clamp a piece of paper or board flat over a rubber membrane, pump hydraulic pressure under the membrane until the specimen pops, and read the pressure on the digital display. That number – in kPa or kg/cm2 – is the burst strength.
This is why burst strength matters: a corrugated box with low burst strength will have holes punched through it when the sharp corners of a packed product push against the sides during transit. A burst strength tester for corrugated box India machine is how box manufacturers prove to their customers that the box meets the required burst factor specification – whether that is the Indian standard (IS 1060 burst strength tester manufacturer India) or the international standard (ISO 2758 burst strength tester manufacturer India for paper, ISO 2759 burst strength tester India for board).
The same machine tests loose paper at a paper mill, linerboard at a corrugated board plant, and finished corrugated sheets at a box factory. As a dedicated burst strength tester for paper India manufacturer and burst strength tester for corrugated box manufacturer, Finetech Engineering builds both ranges – the 5,000 kPa model for paper and single-wall board and the 8,000 kPa model for heavy multi-wall corrugated board.
Material | Standard | Typical Burst Range | Who Uses It |
Paper (kraft, writing, printing) | IS 1060 burst strength tester manufacturer India, ISO 2758 burst strength tester manufacturer India, TAPPI T403 | 70-1,400 kPa | Burst strength tester for paper India – paper mills, paper merchants, printing presses |
Paperboard (solid board, folding carton) | ISO 2759 burst strength tester India, TAPPI T807, IS 1060 | 200-3,000 kPa | Carton board manufacturers, packaging companies |
Corrugated board (3-ply, 5-ply, 7-ply) | ISO 2759 burst strength tester India, TAPPI T810, IS 2771 | 350-5,500 kPa | Burst strength tester for corrugated box India – box manufacturers and box buyers |
Linerboard (test liner, kraft liner) | TAPPI T807, ISO 2759 | 200-2,000 kPa | Liner paper mills, corrugated board makers |
Non-woven fabrics | ASTM D3786 | Variable | Non-woven manufacturers, geotextile producers |
Textile fabrics | ASTM D3786 | Variable | Textile mills, technical textile producers |
This is one of the most common questions among corrugated box buyers and manufacturers. Let’s explain burst strength vs edge crush test corrugated in simple terms:
Feature | Burst Strength (BF) – This Machine | Edge Crush Test (ECT) – Separate Machine |
What it tells you | How well the box resists puncture from something sharp pushing through the side – like the corner of a metal part inside the box. | How well the box resists being crushed from the top when boxes are stacked in a warehouse. |
How the test works | A rubber diaphragm presses against the board surface until it pops – measured by this burst strength tester for corrugated box manufacturer product. | The edge of a corrugated strip is compressed between two flat platens until it buckles. |
Result unit | kPa or kg/cm2 | kN/m |
Standard | IS 1060 burst strength tester manufacturer India, ISO 2758 burst strength tester manufacturer India, ISO 2759 burst strength tester India, TAPPI T403 | TAPPI T811, ISO 3037, IS 7063 |
Who uses it | Most Indian corrugated box manufacturers and buyers – this is the traditional and most widely specified parameter. Every burst strength tester for corrugated box India lab needs this machine. | Growing – increasingly required by multinational companies and export packaging customers. |
Equipment needed | Burst strength tester manufacturer India product – this machine. | Ring Crush / Edge Crush Tester – a separate machine. |
Running a test on the Finetech Engineering Mullen burst tester manufacturer India is straightforward. Here is the complete process:
Step 1: Prepare Your Specimens
Step 2: Clamp the Specimen
Step 3: Apply Pressure Until the Specimen Bursts
Step 4: Record and Calculate
Parameter | Specification |
Product Name | Burst Strength Tester Manufacturer India – Mullen-Type Hydraulic Burst Tester (Mullen Burst Tester Manufacturer India, Finetech Engineering) |
Also Known As | Bursting Strength Tester Manufacturer India, Burst Strength Tester for Paper India, Burst Strength Tester for Corrugated Box India, Mullen tester |
Test Method | Hydraulic diaphragm inflation (Mullen method) |
Model A Pressure Range | Burst Strength Tester for Paper India – 0 to 5,000 kPa (for paper and single-wall corrugated board) |
Model B Pressure Range | Burst Strength Tester for Corrugated Box India – 0 to 8,000 kPa (for heavy multi-wall corrugated board and linerboard) |
Display | Digital with peak hold. Resolution: 1 kPa or 0.01 kg/cm2 |
Result Units | kPa and kg/cm2 – both displayed simultaneously |
Clamping Ring Diameter | 30.5 mm – per ISO 2758 burst strength tester manufacturer India and TAPPI T403 |
Hydraulic Flow Rate | 170 ±15 ml/min (controlled pump mechanism per ISO 2758) |
Standards | IS 1060 burst strength tester manufacturer India, ISO 2758 burst strength tester manufacturer India, ISO 2759 burst strength tester India, TAPPI T403, TAPPI T807, TAPPI T810, ASTM D3786 |
Diaphragm | Standard rubber diaphragm – replaceable consumable |
Frame | Steel frame, powder coated |
Power Supply | 230V AC, single phase, 50 Hz |
Certification | ISO 9001:2015 certified manufacturing. NABL-traceable calibration available. |
These are the typical ranges you will see when you run tests on the Finetech Engineering burst strength tester for corrugated box manufacturer or burst strength tester for paper India product:
Material | Typical Burst Strength | Notes |
Kraft paper (60-90 GSM) | 150-350 kPa | Varies with GSM and fibre quality |
Testliner (100-150 GSM) | 250-500 kPa | Recycled fibre liner – lighter grade |
Kraft liner (150-300 GSM) | 400-900 kPa | Virgin fibre, stronger than testliner |
3-ply corrugated board | 5-8 kg/cm2 | Standard Indian domestic grade |
5-ply corrugated board | 10-16 kg/cm2 | Heavy-duty domestic and export grade |
7-ply corrugated board | 16-24 kg/cm2 | Very heavy-duty, industrial packaging |
Solid fibreboard | 500-2,500 kPa | Varies with thickness and grade |
Displays both kPa and kg/cm2. Indian corrugated board manufacturers traditionally specify burst strength in kg/cm2. International standards like ISO 2758 burst strength tester manufacturer India and ISO 2759 burst strength tester India use kPa. The Finetech Engineering Mullen burst tester manufacturer India displays both units at the same time, so you can serve both domestic and export customers from one machine.
All Indian and international standards covered. As a compliant IS 1060 burst strength tester manufacturer India, ISO 2758 burst strength tester manufacturer India, and ISO 2759 burst strength tester India supplier, our machine handles every standard your customers or auditors might ask for – domestic or export.
Digital peak hold – never miss a burst reading. The specimen bursts in a fraction of a second. The digital peak hold function freezes the maximum pressure at the exact moment of rupture. You never miss a reading, even on fast-bursting thin paper.
Two model ranges for all materials. Model A (5,000 kPa) for the burst strength tester for paper India application. Model B (8,000 kPa) for the burst strength tester for corrugated box India application including heavy 5-ply and 7-ply board. As a full-range burst strength tester manufacturer India, we manufacture both.
Consumables and service support. Replacement diaphragms, calibration certificates, and AMC plans – all available from the same bursting strength tester manufacturer India that made your machine. No searching for parts from unknown suppliers.
Product | Why You Might Need It |
Vibration Tester | Tests how packed goods hold up during transport vibration – complementary to burst testing |
Drop Tester | Tests whether boxes survive being dropped – the other half of packaging QC alongside the burst test |
Universal Testing Machine (UTM) | For tensile testing of paper strips per ISO 1924 – complements burst strength tester for paper India data |
Humidity Chamber | For conditioning paper and board specimens at 23 deg C / 50% RH before IS 1060 burst strength tester manufacturer India testing |
Rectangular Strip Cutter | For cutting paper tensile test strips |
Specimen Cutters & Moulds (Full Range) | Browse all Finetech Engineering specimen preparation equipment |
Customisation available
Imagine taking a piece of paper or cardboard and inflating a balloon against it from underneath until it pops. The pressure required to make it pop is the burst strength. A higher number means stronger paper or board. The Finetech Engineering Mullen burst tester manufacturer India product does exactly this - but in a controlled, standardised way that gives you a repeatable number you can compare against your customer's specification.
The Mullen burst test is the standard method for measuring burst strength. It is named after the original machine design that invented this test method. Every Mullen burst tester manufacturer India product uses the same principle: a rubber diaphragm is inflated against a clamped paper or board specimen until the specimen ruptures. The peak pressure at rupture is the burst strength. It is standardised in IS 1060 burst strength tester manufacturer India (Indian), ISO 2758 burst strength tester manufacturer India (paper), ISO 2759 burst strength tester India (board), and TAPPI T403.
GSM (grams per square metre) tells you how heavy the paper is. Burst strength tells you how strong it is under pressure. Heavier paper is usually stronger, but not always - two papers of the same GSM can have very different burst strengths depending on the fibre quality and manufacturing process. Your burst strength tester for paper India machine measures what GSM cannot tell you: actual resistance to bursting under pressure.
Burst strength vs edge crush test corrugated is a common question. Burst strength (BF) measures resistance to puncture from internal pressure - specified as kPa or kg/cm2. Edge crush test (ECT) measures how much stacking load the box can take before the edges buckle - specified in kN/m. Most Indian customers ask for burst strength. Export customers and multinational companies increasingly ask for ECT. Check your customer's specification. If it says 'BF' or 'kg/cm2 burst' - that is this machine. If it says 'ECT' - you need a Ring Crush Tester, which is a different machine.
Choose 5,000 kPa if you test paper and single-wall (3-ply) corrugated board only. Choose 8,000 kPa if you test heavy 5-ply or 7-ply corrugated board or high-strength linerboard. If you are not sure, or if your business might grow into heavier boards later, choose the 8,000 kPa model - it covers everything. As your burst strength tester for corrugated box manufacturer, we can advise on the right model for your specific materials.
Paper and board absorb moisture from the air. A sheet of board tested at 70% humidity can give a burst value 20-30% lower than the same sheet tested at 50% humidity. If you skip conditioning and test at whatever humidity happens to be in your lab that day, your results will be inconsistent and incomparable with your customer's tests. Every IS 1060 burst strength tester manufacturer India standard requires 24-hour conditioning at 23 degrees C and 50% relative humidity. A Finetech Humidity Chamber provides this environment.
ISO 2758 burst strength tester manufacturer India standard covers paper (light materials with burst strength below 1,400 kPa). ISO 2759 burst strength tester India covers board and corrugated materials (heavier materials with higher burst strength). The test method is the same - the difference is in the pressure range and some specimen preparation details. If you test paper, you need ISO 2758 compliance. If you test board or corrugated, you need ISO 2759. The Finetech machine covers both standards.
The diaphragm stretches and wears over time. Replace it when your blank test values (diaphragm-only pressure) start drifting outside the calibration range, when you see visible cracks or permanent deformation, or as a general rule after about 2,000-3,000 tests. Finetech supplies replacement diaphragms and includes diaphragm inspection in our AMC plans.
Yes. The Finetech bursting strength tester manufacturer India product meets the accuracy and repeatability requirements of ISO 2758 burst strength tester manufacturer India, ISO 2759 burst strength tester India, and TAPPI T403. We provide calibration certificates that support your NABL accreditation application for paper and board burst strength testing.
