How to Prevent Carton Crushing During Storage and Shipping
Carton crushing is a common issue in logistics, especially when products are stacked during storage or transit.
Weak packaging structure, improper stacking, and incorrect material selection often lead to collapsed cartons — damaging products and increasing losses.
In this guide, we break down how to design cartons that can handle load, maintain shape, and protect products under real-world conditions.
1. Why Cartons Get Crushed
Carton crushing typically happens due to compression forces, not impact.
Key causes include:
- Heavy stacking in warehouses
- Load pressure during transport
- Weak corrugated structure
- Moisture-reducing material strength
Cartons fail when they are not designed for vertical load
2. Common Packaging Mistakes
Many brands unknowingly use cartons that cannot handle stacking pressure:
Using 3-ply cartons for heavy products
Ignoring stacking height in warehouses
Choosing low GSM paper
Oversized cartons with uneven load
Not considering humidity conditions
3. Practical Packaging Approach
To prevent crushing, packaging should be designed for a load-bearing capacity
Compression Strength
Cartons must withstand vertical stacking pressure
Structural Integrity
The box shape should remain intact under load
Internal Support
Proper product placement prevents uneven pressure
4. Recommended Packaging Structures
Based on use-case, here are commonly used structures:
High-Strength Corrugated Cartons
- 5 ply for medium-heavy loads
- 7 ply for heavy-duty applications
- Higher GSM paper for added strength
Flute Selection
- B flute → better stacking strength
- C flute → better cushioning
- BC flute → combination strength
Structural Enhancements
- Reduce empty space inside cartons
- Use tighter packing configurations
- Add internal supports if required
5. Cost vs Strength Trade-off
Stronger cartons increase cost, but:
- reduce product damage
- improve stacking efficiency
- lower logistics losses.
- product weight
- storage duration
- transportation conditions
6. Final Recommendation
There is no universal carton strength that works for all cases.
The right solution depends on:
- Product weight and density
- Stacking height
- Storage environment (humidity, duration)
- Logistics handling
A well-designed carton prevents crushing, protects products, and improves operational efficiency
7. Frequently Asked Questions
Why do cartons get crushed during shipping or storage?
Cartons get crushed due to:
- excessive stacking weight
- low-strength corrugated boxes
- poor structural design
- High humidity weakens the material
Most crushing happens when packaging is not designed for load-bearing conditions.
What type of carton is best to prevent crushing?
How do you increase carton strength for stacking?
- increasing ply (3 → 5 → 7 ply)
- using higher GSM paper
- optimizing flute type (B flute, C flute, etc.)
- Reducing empty space inside the carton
What causes cartons to collapse under load?
- vertical compression from stacking
- weak material quality
- moisture exposure
- uneven weight distribution
