TAPPI T811

Introducing TAPPI T811 – Industrial Physics

TAPPI T811 is the industry‑standard method for determining the burst strength of paper and paperboard using a constant‑rate‑of‑elongation (CRE) type burst tester. This test measures the maximum pressure required to rupture a sheet when force is applied through a rubber diaphragm — a key indicator of material durability, fibre bonding, and structural integrity.

Burst strength is essential for packaging grades, converting applications, and any paper product that must withstand handling, stacking, or mechanical stress.

What TAPPI T811 Covers

TAPPI T811 defines a controlled procedure for evaluating burst strength using a calibrated CRE burst tester. Key elements include:

• Clamping the sample securely in a circular test area
• Applying pressure through a rubber diaphragm at a constant rate
• Measuring the maximum pressure at rupture
• Conditioning samples under standard temperature and humidity
• Reporting results in kilopascals (kPa) or pounds per square inch (psi)

The method applies to:

• Paperboard and cartonboard
• Packaging papers
• Linerboard and medium
• Industrial papers requiring structural strength

TAPPI T811 ensures consistent, repeatable burst‑strength measurement across laboratories and production environments.

Where TAPPI T811 Is Used

This standard is widely used across the paper, packaging, and converting industries:

• Paper mills and board manufacturers
• Corrugated and folding‑carton producers
• Packaging‑material converters
• Quality‑control laboratories
• R&D and formulation teams
• Customer‑specification and compliance testing

It supports both routine production monitoring and comparative evaluation of fibre strength and sheet structure.

Why Burst‑Strength Testing Matters

Understanding burst strength is essential for:

• Ensuring package durability and load‑bearing performance
• Validating fibre bonding and sheet formation
• Predicting resistance to handling, impact, and compression
• Meeting industry and customer specifications
• Supporting grade development and quality optimisation

Burst strength is a foundational mechanical property used alongside tensile, tear, and compression testing to build a complete performance profile.

Testing solutions for TAPPI T811

Two products from the Featured Products section align directly with TAPPI T811’s focus on burst‑strength measurement:

Profile Plus Burst

A high‑precision burst‑testing module engineered for accurate, repeatable measurement of paper and board strength. Fully aligned with TAPPI T811 requirements, it delivers stable performance across a wide range of packaging and industrial grades.

Technidyne Paper Calibration Standards for Profile Plus Burst

A certified set of calibration standards designed to maintain long‑term accuracy and repeatability in burst‑strength measurement. These standards ensure your Profile Plus Burst system remains stable, reliable, and fully aligned with TAPPI and ISO burst‑testing methods.

Your Global Test and Measurement Partner for TAPPI T811

Industrial Physics supports paper mills, packaging manufacturers, and laboratories with the tools and expertise needed to evaluate burst strength in line with TAPPI T811. From burst testing to full mechanical‑property analysis, we help ensure your materials meet demanding performance and durability standards.