Introduction
When standard single-wall corrugated boxes are not enough, businesses turn to double wall corrugated boxes. These boxes provide superior strength and protection for heavy, fragile, or high-value products. If you are searching for double wall corrugated box suppliers in India, this guide will help you understand when and why to use them.
What is a Double Wall Corrugated Box?
A double wall corrugated box consists of five layers of paperboard:
- Outer liner (top)
- First corrugated medium (B-flute)
- Middle liner
- Second corrugated medium (C-flute)
- Inner liner (bottom)
This construction provides 2-3 times more strength than single-wall boxes, making them ideal for demanding applications.
Double Wall vs Single Wall: Key Differences
| Specification | Single Wall (3-ply) | Double Wall (5-ply) |
|---|---|---|
| Layers | 3 (liner + flute + liner) | 5 (liner + flute + liner + flute + liner) |
| Thickness | 5-7 mm | 10-14 mm |
| ECT Rating | ECT-32 to ECT-44 | ECT-48 to ECT-65 |
| Burst Strength | 150-200 PSI | 250-350 PSI |
| Max Weight | Up to 15 kg | Up to 50 kg |
| Compression Strength | Moderate | High (2-3x single wall) |
| Cost | Lower | 30-50% higher |
When to Use Double Wall Corrugated Boxes
1. Heavy Products Over 10 kg
Products weighing more than 10 kilograms require double wall boxes. The additional layers provide the compression strength needed to prevent crushing during stacking and handling.
2. Fragile Items Requiring Maximum Protection
Glass, ceramics, electronics, and other fragile products benefit from double wall construction. The multiple layers absorb shocks and provide cushioning that single-wall boxes cannot match.
3. Products with Sharp Edges or Corners
Items with sharp edges or corners can puncture single-wall boxes. Double wall construction provides an extra barrier against punctures.
4. Industrial and Machinery Parts
Heavy industrial components, machinery parts, and automotive items need the superior strength of double wall boxes.
5. Multi-Item Packages
When shipping multiple items in one box, double wall construction ensures all items remain protected during transit.
Understanding ECT and Burst Strength
Edge Crush Test (ECT)
ECT measures the compressive strength of the box in pounds per linear inch (lb/in).
- ECT-48: Suitable for double wall boxes up to 25 kg
- ECT-55: Suitable for double wall boxes up to 35 kg
- ECT-65: Maximum strength for double wall, suitable up to 50 kg
Burst Strength (PSI)
Burst strength measures resistance to tearing in pounds per square inch (PSI).
- 250-275 PSI: Standard double wall
- 275-350 PSI: Heavy-duty double wall
- 350+ PSI: Maximum protection applications
Common Applications for Double Wall Boxes
E-commerce and Retail
- Large electronics (televisions, monitors)
- Home appliances
- Heavy kitchen equipment
- Sports and fitness equipment
Industrial and B2B
- Auto parts and components
- Chemical containers (with proper sealing)
- Machinery components
- Industrial tools and equipment
Pharmaceutical and Healthcare
- Medical equipment
- Diagnostic devices
- Large container shipments
Export and International Shipping
Double wall boxes are often required for export shipments due to the rougher handling involved in international logistics.
Why Choose Double Wall from Hariyali Industries
Quality Assurance
Every double wall box from Hariyali Industries undergoes rigorous quality testing:
- ECT testing to verify compression strength
- Burst strength verification for tear resistance
- Dimensional accuracy checks
- Material quality inspection
Custom Specifications
We manufacture double wall boxes to your exact requirements:
- Custom dimensions for your products
- BC flute combination (most common) or custom configurations
- Water-resistant treatment available
- Custom printing for branding
Competitive Pricing
As a direct manufacturer, we offer competitive pricing without compromising on quality. Volume discounts are available for regular orders.
How to Order Double Wall Corrugated Boxes
- Contact us with your requirements
- Provide specifications: dimensions, weight capacity needed, quantity
- Request samples for testing
- Confirm order after quality verification
- Schedule delivery as per your production timeline
Frequently Asked Questions
Q: What is the maximum weight a double wall box can handle?
A: Double wall corrugated boxes can handle up to 50 kg when properly specified. For items over 30 kg, we recommend ECT-55 or higher.
Q: What is the difference between BC flute and AC flute in double wall boxes?
A: BC flute (B-flute inside, C-flute outside) is the most common combination, offering good compression strength and moderate cushioning. AC flute provides superior cushioning with less compression strength.
Q: Can double wall boxes be custom printed?
A: Yes, we offer flexographic printing up to 6 colors for branding and handling instructions.
Q: Are double wall boxes suitable for food packaging?
A: Yes, with appropriate food-grade liners. Contact us to discuss your specific food packaging requirements.
Q: What is the typical lead time for double wall box orders?
A: Lead times vary by quantity and specifications. Standard orders typically ship within 5-7 business days.
Contact Hariyali Industries for Double Wall Corrugated Boxes
If you need double wall corrugated boxes in India, Hariyali Industries is your trusted supplier. We manufacture to exact specifications with guaranteed quality.
Contact us today to discuss your double wall box requirements and get a quote for your business.