1. What is Corrugated Box Burst Strength?

Burst strength measures the ability of corrugated cardboard to resist rupture when subjected to pressure. It is a critical quality parameter for packaging materials, indicating how much internal pressure a box can withstand before bursting.

2. How Does the Calculator Work?

The calculator uses the burst strength formula:

Where:

• \( ECT \) — Edge Crush Test value (lb/in²)
• \( Factor \) — Conversion factor (number)
• \( Burst \) — Burst strength result (psi)

Explanation: The formula converts ECT values to burst strength using a standardized conversion factor that accounts for material properties and construction characteristics.

3. Importance of Burst Strength Calculation

Details: Accurate burst strength calculation is essential for determining packaging durability, ensuring product protection during transportation and storage, and meeting industry quality standards.

4. Using the Calculator

Tips: Enter ECT value in lb/in² and the appropriate conversion factor. Both values must be positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is the typical range for conversion factors?
A: Conversion factors typically range from 1.5 to 3.0, depending on the corrugated board type and quality standards.

Q2: How does ECT relate to burst strength?
A: ECT measures edgewise compression strength, while burst strength measures resistance to internal pressure. The factor converts between these two properties.

Q3: What are industry standards for burst strength?
A: Standards vary by application, but typical requirements range from 125-350 psi for most shipping containers.

Q4: Can this calculator be used for all corrugated materials?
A: Yes, but ensure you use the correct conversion factor for your specific material type and construction.

Q5: How accurate is this calculation method?
A: The calculation provides a reliable estimate, but actual burst testing is recommended for critical applications and quality certification.