1. What is Box BCT?

Box BCT (Box Compression Test) measures the compressive strength of corrugated cardboard boxes. It indicates the maximum load a box can withstand before collapsing when stacked.

2. How Does the Calculator Work?

The calculator uses the Box BCT formula:

Where:

• \( BCT \) — Box Compression Strength (psi)
• \( ECT \) — Edge Crush Test value (psi)
• \( Thickness \) — Board thickness (inches)
• \( Perimeter \) — Box perimeter (inches)

Explanation: The formula calculates the compressive strength of a corrugated box based on material properties and box dimensions.

3. Importance of Box BCT Calculation

Details: Accurate BCT estimation is crucial for determining appropriate stacking heights, ensuring product safety during storage and transportation, and optimizing packaging design.

4. Using the Calculator

Tips: Enter ECT in psi, thickness in inches, and perimeter in inches. All values must be valid (greater than 0).

5. Frequently Asked Questions (FAQ)

Q1: What is ECT?
A: ECT (Edge Crush Test) measures the crushing resistance of corrugated board when force is applied perpendicular to the flutes.

Q2: How is perimeter calculated?
A: Perimeter is calculated as 2 × (length + width) of the box.

Q3: What are typical BCT values for shipping boxes?
A: Typical BCT values range from 100-300 psi for standard shipping boxes, but can vary based on box size and material quality.

Q4: Are there limitations to this formula?
A: The formula provides an estimate and may not account for all variables like humidity, box design, or manufacturing variations.

Q5: How does board thickness affect BCT?
A: Generally, thicker boards provide higher BCT values, as they offer greater resistance to compression forces.