When customers ask for “strong cartons,” they often think all boxes are the same — only thickness changes.
But in reality, carton strength is measured scientifically, and the right box depends on:
✔ product weight
✔ stacking height
✔ shipping conditions
✔ storage environment
At ANIPACK Packaging Industries, we design cartons based on engineering principles, not guesswork. Three key tests define true carton performance:
Burst Strength
ECT (Edge Crush Test)
Box Compression Strength
Let’s explain what each one means — in simple words — and when it matters.
1. Burst Strength — Resistance to Puncture & Impact
What it measures:
Burst strength tests how much pressure a carton wall can take before it bursts or tears.
Think about:
- Sharp edges inside the box
- Rough handling during loading
- Pressure from sudden drops
Burst-tested cartons are ideal when products press outward on the carton walls, such as:
✔ garments
✔ food items in pouches
✔ consumer goods
✔ lighter FMCG products
If your box needs protection from punctures or sudden impact, burst strength matters.
At ANIPACK, we carefully match burst ratings with your product weight and handling method — so the carton holds safely through the supply chain.
2. ECT (Edge Crush Test) — Strength at the Edges
What it measures:
ECT measures how much force a carton edge can handle before it crushes.
Why edges?
Because when cartons are stacked on pallets or shelves, weight travels through the edges, not the middle.
ECT cartons are essential for:
✔ stacked warehouses
✔ exporters
✔ logistics and courier shipments
✔ e-commerce packaging
Higher ECT = stronger edge = better stacking without collapse.
If your cartons are stacked high or shipped long distances, ECT should be your priority.
At ANIPACK, we recommend the right ECT rating based on:
- stacking height
- storage environment
- palletization method
- transport duration
This keeps cartons stable and prevents crushing losses.
3. Box Compression Strength — Real-World Stacking Performance
What it measures:
Compression testing determines how much total weight a full box can tolerate when stacked.
This matters in:
✔ warehouses
✔ containers
✔ retail storage
✔ export pallets
Factors influencing compression include:
- corrugated flute type
- board combination
- humidity and climate
- stacking pattern
- pallet conditions
Even a high-quality carton can collapse if stacked incorrectly or stored poorly.
That’s why we not only supply cartons —
we guide customers on best stacking practices for safe long-term storage.
Burst vs ECT — Which One Do You Need?
Here’s a simple comparison:
| Requirement | Choose |
| Protection from puncture, rough handling | Burst Strength cartons |
| Safe stacking and pallet load resistance | ECT cartons |
| Export / long transport stacks | Compression-engineered cartons |
Many customers need a balanced combination, depending on product type.
Our technical team reviews your packaging and suggests the most cost-effective option — without over-engineering or overspending.
️ Why Climate & Storage in Pakistan Matter
Pakistan’s climate, especially during hot and humid seasons, can weaken corrugated strength if:
- boxes absorb moisture
- cartons are stored directly on floors
- stacks exceed safe height limits
At ANIPACK, we account for local storage realities by:
✔ selecting suitable flute and paper grades
✔ recommending correct stacking height
✔ advising moisture-safe storage practices
✔ supplying cartons shrink-wrapped or poly-bagged (where required)
This helps maintain carton integrity from factory to warehouse to customer delivery.
How ANIPACK Ensures Reliable Box Strength
Our cartons are manufactured using:
- quality paper combinations
- calibrated machines
- in-process quality checks
- proper glue adhesion standards
Each order is engineered according to product weight, stacking plan, and transport route — not just “thicker board.”
Because real packaging strength is about science — not guesswork.
Final Thought: The Right Strength Saves Money — And Prevents Losses
Choosing the wrong carton can lead to:
❌ crushed shipments
❌ damaged goods
❌ brand complaints
❌ wastage and replacement cost
Choosing the right strength means:
✔ safer transport
✔ fewer damages
✔ professional presentation
✔ controlled packaging cost
And that’s exactly what ANIPACK Packaging Industries helps customers achieve.
Need Help Selecting the Right Strength Carton?
Our packaging experts can evaluate your product and recommend the ideal board grade — FREE.
Visit: www.anipack.pk
Share your product weight and stacking details
Get a carton strength recommendation tailored to your needs
ANIPACK Packaging Industries — Stronger Packaging. Smarter Solutions.