Understanding Corrugated Board
Not all corrugated boxes are created equal. The right choice depends on your product weight, shipping method, and protection requirements. Here's what you need to know.
Flute Types Explained
A-Flute (5mm): The thickest flute, providing excellent cushioning for heavy or fragile items. Best for single-item shipping where protection is the priority.
B-Flute (3mm): A versatile option that balances protection with compact size. Ideal for e-commerce mailer boxes and retail-ready packaging.
C-Flute (4mm): The most common flute type, offering good all-around protection. Used widely for shipping cartons and product boxes.
E-Flute (1.5mm): The finest flute, often used for printed retail packaging where a smooth surface is needed for high-quality graphics.
Single Wall vs. Double Wall vs. Triple Wall
Single Wall: One layer of fluting between two liners. Suitable for lightweight products up to 30kg.
Double Wall: Two layers of fluting for extra strength. Recommended for products over 30kg or when stacking during transit.
Triple Wall: Three layers of fluting for maximum strength. Used for heavy industrial products or when pallet stacking is required.
Edge Crush Test (ECT) Ratings
The ECT measures a box's stacking strength. Common ratings include 32 ECT (standard), 44 ECT (heavy-duty), and 55 ECT (industrial). Match the ECT rating to your product weight and stacking requirements.
Custom Structural Design
At GIURIAE, our structural engineers can design custom corrugated solutions with features like internal dividers, suspension systems, and die-cut inserts to perfectly protect your products during shipping.
